*HP EliteBook 2530p Owners Lounge*

Hi Everyone.. I have a 2530p that doesn't work after taking out the RTC battery to clear a lost password.. It will power on with a blank screen for a few seconds and then restart over and over again.. Can it be fixed?

Thanks...

 

Hi Nando,

Thanks for the tutorial on the PLL pinmod, I was able to successfully pinmod my 2740p sl9300 last night. I didnt have much time to do testing yet but I was able to set my bclk at 330 @ 1.2V using setpll but I would get memory errors when I tried to run programs. So i went down to around 310-315 at a lower voltage and it seemed stable (Max temps were early 80's after some stress testing) although I will have to do more testing today.

So a few questions,

-will following step 3: flash the PC2-5300 RAM specs to one RAM module help with increasing my overclocking headroom? Can I just follow the same steps listed in your links?

-In the DIY Vidock tutorials you mention overclocking the PCI-E bus, how do I do this?

 

Yes. I flashed one RAM module to PC2-5300 spec. The chipset then pulls back RAM and 4500MHD timings giving more overclock headroom. I also changed the 333Mhz SPDTable entry to have CAS=6. I too otherwise encountered instability at ~315Mhz bclk with the PC2-6400 timings.

This is how you'd do an BCLK+ pci-e overclock:

1. Edit \setpll\chkcpu32 to contain "set cpu=L9300", "set multi=6"

2. Copy the \setpll\chkcpu32 files to \setpll

3. Do a 330Mhz bclk and 125Mhz pci-e overclock with small ramp for stability. 125Mhz pci-e probably needs the 30cm DIY ViDock mini HDMI cable for reliable transmission. There's also 100, 105, 110, 115, 120Mhz entries in the LUT if need to pull it back a bit.

Code:

setpll ics9lprs397dklf 315.325.330 125

1.2V is too high. You'll be able to run lower than that for sure. Finding the lowest stable overclock voltage will bring down full load temps.

Did you manage to take some photos of the PLL TME-unlock mod while doing it? It would help other 2730P owners to replicate your pioneering efforts.

 

Unfortunately I forgot to take some pictures... Getting to the pin took a lot of work, I had to totally disassemble everything, even removing of the heatsink/fan to get get to it (The HP service manual instructions are very good however). What I can say is it looks nearly identical to your picture so anyone who decides to do the same mod on their 2730p can use that and the datasheet for reference.

When i get home from work later today I will attempt flashing one ram module... will let you know how it turns out. Thanks again!

 

Just one more thing, the 30cm mini hdmi cable, is this the same thing as the dealextreme one?

 

INFO: Adding a MC8780/MC8781 3G/HSPDA WWAN card with GPS

The steps below show how to successfully add a MC8780/MC8781 to a 2530P. This provides mobile internet on the go without needing a USB dongle. Turning on the radio and using the WWAN card sees a > 2W power load so expect battery life to decrease while in use. I disable the USB port the WWAN card is attached on when not in use to maximize battery life.

1. Flash the unwhitelisted 2530P modded_bios. Without that will otherwise get 104 - Unsupported WWAN device error, limiting you to only using the HP certified WWAN cards.
   
   
2. Purchase an unlocked MC8780/MC8781 from ebay for < US$30-delivered. MC8781=US, MC8780=Asia/Europe/Oceania. I chose the MC8780 over the Gobi-2000 (UN2400) because it was cheaper and I prefer the simpler Sierra Watcher interface. The Gobi-2000 appears to not have a generic connection manager so would need to use Lenovo's software to connect.
   
   
3. Put cellophane tape over the MC878*'s pin20, 42 and 44 as shown then install in the WWAN slot with antennas attached. If don't cellophane pin20 then the card will not be detected. If don't cellphane pins 42+44 then the wifi will intermittently drop out when the WWAN card is installed.
   
   
4. Install 3G SIM from your preferred internet provider in your 2530P's SIM card slot.
   
   
5. Install Sierra Watcher software. MC8781=Aircard 881U, MC8780=Aircard 880U
   
   
6. Enjoy your 3G and GPS functionality as demonstrated by my 2530P+MC8780 screenshot below.
   
   
7. Optional: create a shortcut using devcon to disable/enable the USB port the MC8780 is using to quickly disable/enable it.

 

@nando
I have dual ida working and for your score table here are my results

sl9600
6.0
6.0
3.9
3.4
7.7

2.40/266/x9

 

Nice result. It's been added to the revised INFO: 2530P Overclocking.

I also believe your L9600 would get a 2.9-3.0Ghz overclock if you attempted the the TME-unlock + setPLL overclock again, details of which have also been revised in that link. At that level the WEI.cpu would be somewhere b/w 6.6-6.8, putting it just shy of full-powered i5 territory.

 

Well after a year, my beloved 2530p has packed it in. It saw the HP technician about 3 times - 2 replaced motherboards, and a replaced trackpad. Now its developed a a loose connection meaning the screen becomes garbled, and I have to physically push on it to get the picture back.

I'm fortunate enough to be getting a 2560p (though I've been waiting for 3 weeks already). Not looking forward to the weird keyboard layout, and the increased heft, but the speed will hopefully be worth it

 

Hi,

can anyone tell me if it's possible to use a 2,5" SSD in the caddy as a primary drive for the OS and the 1,8" HDD only as storage or is there any performance disadvantage ??

 

Yes, can do that and boot off the 2.5" SSD. It's a straightforward installation.

I however chose a 1.8" SSD + 2.5" HDD setup. This is because a 1.8" SF1222 SSD gives the same performance as a 2.5" SF1222 SSD. I also have an adapter so I can use the 1.8" SSD as a 2.5" drive.

A 2.5" HDD however is faster than 1.8" HDD and are offered in larger capacities up to 1TB.

 

In case anyone was wondering I thought I'd post my windows experience index for my 2530p before it RIPs (SL9600, 4gb, 128gb SSD Samsung MMCRE28G8MXP). I know its not the worlds best benchmark, but I don't have any other. The most interesting part would be the HD

Processor 5.7
RAM 5.7
Graphics Windows 3.8
Gaming Graphics 3.4
HD 5.9

The Samsung HD is a little annoying as you can't update its firmware (HP has locked it, and is too lazy to update it, and Samsung does not supply firmware to HP OEM drives), and has no TRIM or GC etc :-(

 

INFO: Fitting a 2510P keyboard to a 2530P

It was noted that a 2530P keyboard fits on a 2510P here. So the reverse is true. Something you may want to do if prefer the blue highlights on some of the keys or have say a non-English 2510P keyboard and wish to transplant it to a 2530P. See picture below of a ebay 2530P that has this swap:

 

I picked up a 2530p off ebay for $113 U.S . It came with the bay hard drive adapter. The only thing wrong with it was a bad ram module and hard drive. I put in a new stick of ram and an 80gb hard drive I had laying around, but I'm planning to get a 320 or 500gb hard drive or possibly put an ssd in there. I took a chance when I bought this as a non working machine, but it worked out and runs Windows 7 64 bit nicely. Glad to join the 2530p club!

 

Recently got a 2530p but does not come with the webcam, is it possible to install this?

 

INFO: Retrofitting a webcam to a webcamless 2530P model

Armed with the 2530P schematic we see there are two ways of adding a webcam:

(1) replace the whole LCD panel with one from a 2530P that has a webcam. The LCD connector on the 2530P systemboard in the top left corner carrying the webcam USB signal. I don't really think this is viable option unless you get a cheap 2530P off ebay that's in need of a repair but happens to have a good webcam and LCD. It's a simple replacement job but consider if selling your 2530P on ebay and buy one with a webcam is better value.

(2) the budget option: graft in a third party webcam to via the docking connector's USB pins. Successfuly demonstrated by mike60's 2510P webcam retrofit. The 2530P and 2510P use the same docking station so the docking connectors are identical.

 

cheers nando, both options seem out of my reach! ashame since i got the 2530p thinking it came with a webcam, as my current portable (Fujitsu p7120) as does not have a webcam!

 

Third solution is of course the basic USB 2.0 webcams that clip onto the top of the LCD and plug into the external USB port. Not as elegant, but far less involved and will get the job done.

 

webcam is not a deal breaker just a disappointment.

am getting a logitech c525 webcam, so thats fine. Getting an expresscard USB3, and an esata card as well so connectivity-wise i'm set.

next up is upgrade to 4gb ram, will flash bios as per your previous posts to get max benifit of ram and then do some over clocks as well.

 

You don't happen to have a L9600 cpu? If so and are prepared to do the TME-unlock PLL mod then I'd be curious what stable overclocks you could achieve at reasonable temperatures.

I've got my L9400 running at 330Mhz (2.64Ghz) but am locked to a x8 dual-IDA multiplier so can't go furthter. A L9600 has an additional full multipler so at that same 330Mhz bclk would be running 2.97Ghz, putting it into i-core territory.

 

no sorry only the L9400 currently at 1.8ghz

 

Just found out my 2530p is still under warranty untill Sep 2012 ( HP HW Maintenance Onsite Support)

What over clocking can i do that will not void the warranty? The TME-unlock PLL pinmod is out of the question i guess, would flashing a hacked BIOS also void the warranty?

 

DIY eGPU implementation: [email protected] 12.1" HP 2530P + NVidia GTX460/GTX560Ti @x1.Opt

Notebook US$300 12.1" HP 2530P [email protected] 4500MHD 4GB DDR2 60GB Renice X3 SSD + DVD/500GB ICH9M expresscard 1.0 slot (2.5GT/s) Windows 7/64 and Ubuntu 10.10/64 ​	DIY eGPU parts US$92(US)/US$113 delivered PE4H-EC2C 2.4 OR US$67(US)/US$93 delivered PE4L-EC2C 1.5+SWEX US$130AR NVidia GTX460_ 1GB 336 CUDA cores OR US$200AR NVidia GTX560Ti 1GB 384 CUDA cores US$5 salvaged Codegen 12V/15A "350W" ATX PSU ​
Benchmarks L9400 has some results being higher due to 285.27 and 270.61 modded driver L9600 and L9400 testing variation respectively. [highest - GTX560Ti: 3dmark: 06/vant.gpu/11.gpu=14248/14151/3391, RE5.dx9=94.6, dmcv4.dx10_s4=131.9]. [highest - GTX460..: 3dmark: 06/vant.gpu/11.gpu=14051/12889/3384, RE5.dx9=91.3, dmcv4.dx10_s4=129.4].
Config​ CPU RAM​ GPU​ DX9​ DX10​ DX11​ Ports​ OS​ 3dmk6~​ RE5 var|fixed​ FFXIV​ Mafia2^! 1080p​ 3dmk~ vant.g​ dmcv4^ scene4​ 3dmk11 720p​ Unigine Heaven​ Dirt2#^ 1080p​ 1080p​ 720p​ External LCD +25% pci-e L9600 @2.90 4.0GB GTX560Ti x1.Opt 13882 14064 & 86.9|43.1 91.7 &|43.6 & 2976 3024 & 3288 3291 & 46.4 49.9​ 11868 12874 & 115.41 124.29 & 2810 2992 & 1246 1333 & 28.7/44.5 32.2/47.1 &33.5/47.9 ICH9M Win7 64b External LCD +25% pci-e GTX460 x1.Opt 13607 & 13733 & 85.3 &|42.5 & 86.9 &|43.5 & 2453 2504 3087 3224 39.6 &42.6 43.0 &46.7​ 9870 & 10268 & 101.96 & 111.96 & 2483 & 2518 & 965 & 1009 & 22.2/37.2 &26.2/39.2 28.9/41.9 &29.0/42.1 External LCD +25% pci-e L9400 @2.64 4.0GB 12585 & 12688 & 84.0 &|40.6 & 86.5 &|41.1 & 2404 & 2460 & 3039 3071 39.3 &43.6 42.8 &47.6​ 10081 & 10460 & 103.53 & 106.02 & 2417 & 2479 & 922 & 977 & 25.4/37.5 &26.6/40.7 27.8/40.5 &30.8/43.5 Internal LCD +25% pci-e 8525 9843 &​ 41.3 &| 34.2 & 48.1 &| 35.1 &​ - ​ 2251 & 2337 & 30.2 &31.3 33.7 &34.1​ 5763 6512​ 37.2 & 45.1 &​ 2367 & 2415 & 587 & 664 & 18.4/26.6 &18.4/27.1 23.5/31.4 &24.3/32.7​
^ = 1280x800 with internal LCD, ~ = 1280x1024 with 'internal LCD mode' provided via notebook VGA port to external LCD. +25% pci-e = overclock the pci-e bus from 100Mhz to 125Mhz | ! = two back-to-back runs using result from the faster second run & = eGPU overclocked results: GTX460=675/1800->950/1900 GTX460, GTX560Ti=880/2100->1030/2300. # = min/average, London multi-car track with all HIGH except post-process=MED. cmd used "DiRT2.exe benchmark example_benchmark.xml", output saved to Documents/My Games/Dirt 2/Demo/benchmarks
US$227 GTX460+ PE4H-EC2C+PSU Setup 1.x showing system details + GTX560Ti eGPU Optimus driver setup PE4H and GTX460 cabling Optimus' internal LCD mode playing MafiaII Dirt2 on external LCD

Idea reference: http://forum.notebookreview.com/gam.../418851-diy-egpu-experiences.html#post5324240

Software Setup

1. Boot Win7, sleep Win7, attach eGPU via expresscard slot and power it on, resume Win7. GTX460 is detected as Standard VGA. There are no error 12 or USB ports disabled issues with the 2530P.

2. Install 285.27 Retrofit Optimus driver. Disable NVidia High Definition sound to maximize video bandwidth.

3. OPTIONAL for GTX460/GTX560Ti overclocking: Install MSI Afterburner+Kombustor.

How to startup the eGPU

1. Poweroff the eGPU until get past the bios, then power it on OR set the PE4H PCI Reset Delay slider to 7s to effectively do this automatically for you which works during a cold reboot but not a warm reboot.

OPTIONAL: use sleep-resume method. Boot Win7, sleep Win7, attach eGPU via expresscard slot and power it on, resume Win7. If a LCD is attached to the GTX460 then make it the Main Display in Display Properties to output accelerated graphics to it. NOTE: this method does not allow Optimus to output accelerated graphics to the internal LCD - the eGPU must be detected on bootup for that.

2. Use the Safely Remove Hardware And Eject Media systemtray icon when finished using eGPU.

Comments

I sidegraded to a GTX460 for it's smaller size, quieter operation and significantly lower power requirements while delivering similar real-gaming performance to my previous GTX470. I was surprised to find that with stock 675/1800 clocks this GTX460 can be powered by a basic 12V/15A ATX PSU. Previously I needed two to drive the GTX470. Overclocking's higher power did require a second 12V/15A PSU to supply power via one GTX460 pci-e lead. I don't intend to overclock the GPU during regular use since there aren't any significant real-world gains to be had doing so. Quite content with the GTX460

The 950/1900 GPU overclock gives about approx 10% more performance with up to 20% more in 3dmarkvantage. The 25% pci-e overclock has a greater real-life effect. When using the internal LCD mode: 3dmark06's SM3.0, RE5-var, Dirt2 all register a solid 20% FPS improvement with smoother rendering with high detail. This would indicate that the x1 2.0 Optimus (x1.2Opt) doubling of bandwidth with the Series-6 systems will mean it's viable to use only the notebook internal LCD with great performance.

One other observation. When using the internal LCD mode, 3dmarkvantage's texture loading bar was noticably slower to expand even though it wasn't actively changing the screen image. So NVidia allocate a portion of the bandwidth for the internal LCD. Now if NVidia could change their algorithm to maximise usage of the available bandwidth based on load it would improve the internal LCD mode performance.

Is a GTX560Ti worth it over an overclocked GTX460? A GTX560Ti is a 54% price premium over a GTX460, yet you'd see at best 15% more performance with a GTX460 being able to handle a significant overclock. Is then a GTX560Ti worth it? In the case of a x1.Opt link on a 2530P, I think the GTX460 represents much better value.

---

Appendix: other mods/discoveries during this implementation

1. Modified 1GB GTX460 reference bios with fan+voltage unlock

I created a modified GTX460 bios to correct the GTX460 internal thermal throttling as discussed. The source was a Gainward factory 800/2000 overclocked 1GB GTX460 bios modified back to reference 675/1800 clocks, 1.025V Vcore with unlocked fan and voltage control. The result packaged as GTX460_anti-throttle.exe.

Seems to have done the trick. This also corrected an instability issue which was due to my stock bios being undervolted @0.963V with full 3D clocks.

If you wish to try this vbios then extract the package to c:\GTX460_anti-throttle, run 'flash_it'. You'll need to re-install your NVidia drivers. Run 'reverse' to flash back your original bios if it causes any issues. Ensure you keep a copy of the saved GTX460-original.rom in a safe place in case you need to flash back for warranty purposes.

2. Making a modular PSU from an ATX one

My PSU was AU$5 so it was an easy decision to cut unneeded molex leads in order to tidy up my cabling. Required and unrequired molex leads were noted. Then I used a jeweller's flat screwdriver to remove the pin from the junction-point molex plug, snip off the extra cabling using pliers + nail clippers ensuring a clean cut at the base, then careful put back the pins in the correct order. This way I ended up with a PSU with only 3 molex leads.

3. Quietening the ATX PSU fan by driving it with 5V

My AU$5 PSU had a noisy fan. To quieten it down I changed the fan's +12V line (RED) to use +5V instead. This involved unfastening 8 screws, de-soldering the fan connector and attaching it to a nearby 5V connector. A 5V point was found by attach one multimeter probe to the 5V (RED) molex lead and continuity probing the circuitboard.

Yes.. running the slower fan will mean less heat dissipation and higher internal temps. Not that this has caused any problems so far. Should it happen that my AU$5 PSU fails prematurely then I'll use my other AU$5 one.

 

how is the above affected if you use a PE4H-EC2C Version 1.0? or does it not make a difference?

 

PE4H 2.0a enhanced PE4H 1.0 by providing x4 capability. Not relevant for the 2530P since it would be running x1 only. The only drawback then of PE4H 1.0/2.0a over the latest 2.4 is the latter has a fuse bypass jumper. The older versions requiring Panzer's fuse bypass manual soldering instead. The fuse only becomes an issue if you'd be running high power video cards like a NVidia GTX470/480/570/580.

 

cheers nando4, looking at the v1 only cause i might get a good deal. at the moment ssd is priority as hdd noise is unbearable (think mines dieing...), followed by the overclocks you have already done.

 

going to try the eGPU solution.

Have a PE4H 1.0a and getting a rather low powered GPU to test (8400gs)

reading up on the way this works, the expresscard port or you can use the wifi/wwan ports. Nando, you mentioned that the 2530 will run at 1x anyway, Does the 2530p support not twp pci-e lanes by using both the expresscard port and the wwan port?

 

I read the schematic and thought that the 2530P would support x2 since it indicates the WWAN slot is port4. Though it seems there was some revision after the schematic that disconnected the pci-e lines to the WWAN slot. The 2530P port layout is then as follows:

Code:

port1=root port [not electrically connected]
port2=wifi
port3=expresscard slot

The best eGPU configuration for the 2530P is a Fermi class NVidia card since they allow pci-e compression on our platform via the Optimus setup. The lowest/cheapest x1 Optimus capable cards are a GTS240, GT430 or GT520. The GTS240 is an odd model since it pre-dated Fermis but was also a 40nm part. The best bang-per-buck card is a GTX460, a popular model that may be hitting the s/h market since gamers are upgrading to GTX5xx cards.

If you want an ATiAMD card instead then the 2530P port layout also allows for a x1E setup using port3 which can give some decent performance. Doing a x1E link will however result in the wifi card being inoperable. Doing a straight x1 implementation (not x1E-ATiAMD or x1.Opt-NVidia) will of course be faster than the 4500MHD but I found resulted in choppiness in games. x1.Opt is the best way to go.

THe 2530P TME-unlock PLL pinmod is recommended allowing the pci-e bus to be overclocked as well. Well.. I'd go so far as to say it wasted potential to not overclock the 2530P given how easy it is. My 42% CPU + 25% pci-e overclock giving it a new level of competence, not far behind a i5/i7-LV 2540P in CPU performance but faster in pci-e, while costing considerable less and imho offering a better chassis.

 

Always the best replies! a simple question from me and you give such a detailed response!

With regard to the gfx card selection, what would be the most powerful gfx that does not require an ATX PSU? so only using the 19v plug. Max power seems about 75-90w. Can i assume any gfx card that does not have any 6 or 8 pins aux power will work? Seems like the GT440's and below should work while everything above draws too much power, would that be a safe assumption?

btw the PLL Pin mod is in the works too.

 

it means that I can't use eGPU through WWAN slot?
if it's true, what should I buy to save money?
- Amfeltec has a cheaper x1 1.0 mPCIe kit starting at US$29
- US$55 PE4L-EC2C or PE4L-PM3N + US$10/$22 shipping (HIT/hwtools)
- US$85 PE4H-EC2C or PE4H-PM3N + US$10/$22 shipping (HIT/hwtools)
- US$85 PE4H-EC2C or PE4H-PM3N + US$20 PM3N + US$10 PCIEMM-100 + US$28 shipping

 

Yes - the HP 2530P's WWAN slot doesn't have pci-e pins connected. Only the wifi mPCIe slot could be used, but why would you when the 2530P has an expresscard slot.

So I would recommend a NVidia GT4/5xx, GTS4/5xx or GTX4/5XX card. They can do an Optimus setup on a 2530P, accelerating performance using pci-e compression and providing an internal LCD mode.

If your going to powering your DIY eGPU with an ATX PSU then I'd recommend getting the cheapest PE4H+EC2C you can. A PE4L can do the job too, but the PE4H has a sturdy base for upright operation so I prefer it.

The latest PE4H is version 2.4, but for 2530P purposes a 2.0 or 1.x can do the job just as well. There's some for sale on ebay.

 

Would I need ExpressCard 34 to 54 Bracket for 2530p?

 

It's unnecessary. The 34mm EC2C fits firmly into the 2530P's 54mm slot perfectly and works. The bracket just adds extra padding around. The bracket is a cosmetic filler panel.

 

how about Nvidia Quadro or AMD firepro? do they work? does nvidia optimus work with quadro card? Would you give more information about eGPU with Professional Graphics?

 

anyone help me?
how about PE4L + riser 1x -16x ( PCI-E express 1X to 16X riser card extender cable | eBay)

 

Lenovo's W520 uses a FX2000M Quadro card and does Optimus. Means the desktop Quadro cards could as well though have no confirmed installation. My understanding is the Quadro cards are very similar hardware but have more stable drivers for use in professional environments and so command a price premium. A GeForce GTX460/GTX560Ti is then a better bang-per-buck option.

Could do that if you wanted to. I'd suggest just getting a PE4H to begin with instead if the aim is a sturdier x16 slot base for the video card.

 

anybody try to use sound card with PE4H?

 

Yes. SB X-Fi Titanium was implemented here.

 

Congratulations on an excellent purchase, one of the most battery efficient systems still available today.

Suggest use Throttlestop to monitor the CPU frequency. At idle it should show SLFM of 266Mhz x3/x6 at idle (800Mhz/1.6Ghz) and should be 266Mhz x 7 (1.86Ghz) at full load.

 

I'm afraid of overclocking my laptop. Would you mind giving me benmark result with default setting?

 

See benchmark table at INFO: 2530P Overclocking.

 

did anyone notice from CPUID's PC Wizard software that the 2530p 12" screen is SAMSUNG branded? and what is the Video delivery method to the 12" screen in the 2530p system? is it Digital or Analog delivery?

 

i've read an article about Intel's SpeedStep technology which dynamically undervolt the CPU. the below image is from my 2530p Windows 7 64-bit CPU meter gadget, notice how the CPU is running at 784MHz when idle, this indicated that it is underclocked from its original 1.86GHz speed, and by result, it will be undervolted by the Intel's SpeedStep tecnology, so no need for Undervolting the SL9400 CPU if it is done automatically, am i right? see image below:

 

i upgraded my Windows 7 32-bit on my 2530p to Windows 7 Ultimate 64-bit because i'm planning to add another 4GB memory stick to the existed 2GB (total of 6GB RAM). but i noticed in my computer properties in Windows 7 64-bit Ultimate that the Installed Memory (RAM) is "1.87 GB usable" from the original 2GB. i'm still not adding my 4GB memory stick yet, because i didn't receive it yet. can anyone please tell me why only 1.87 GB is usable from the total of 2 GB? the strange thing that when the Windows 7 32-bit was installed in my 2530p there was no such a "1.87 GB usable", it was just only "2GB", why? and after the 4GB arrive and then add it to the 2GB (total of 6GB physical memory), what will the "usable" memory will be? see the below image captured from my Windows 7 Ultimate 64-bit installed on my 2530p:

 

ok, thank you Indrek, but when the SL9400 CPU is underclocked from 1.87GHz when full load to 784MHz when idle, the result of this underclocking is reducing the voltage "undervolting", since 1.87GHz frequency consumes more voltage than 784MHz frequency, and i don't think that same voltage is consumed in both cases, am i right about that? another thing, i read that Low Voltage CPUs "LV" like my 2530p's SL9400, and also the Ultra Low Voltage CPUs "ULV", like SU9300 and U7600 cannot be undervolted because Intel designed them to consume the lowest voltage available that can operate them correctly, is that true?
now, what about my other two questions posted previously above; the one about the 1.87GB usable memory from the existed 2GB on Windows 7 Ultimate 64-bit, and the other question about the 2530p's 12" display brand and Video delivery?

 

Today i bought Patriot 4GB DDR2 PC2-6400 800MHz memory stick (1x4GB), also i have a 2GB DDR2 PC2-6400 800MHz memory stick (1x2GB) which i previously removed from another laptop. i want to upgrade my HP 2530p laptop that originally came factory-configured with 2GB memory stick in the internal slot (1x2GB), the operating system installed on my 2530p is Windows 7 Pro 64-bit. so with the memory sticks that i have, i can achieve two configuration as follows:

Config.1: the internally installed 2GB (1x2GB) + the new Patriot 4GB (1x4GB), total RAM of 6GB DDR2 800MHz.
Config.2: the internally installed 2GB (1x2GB) + the 2GB (1x2GB), total of 4GB RAM DDR2 800MHz of identical Dual Channel memory.

i know that total of 6GB RAM is larger than total of 4GB RAM in number of GBs, but my question for all you guys which configuration of the two would achieve the BEST PERFORMANCE for my 2530p? and do the both configurations implement the DUAL-CHANNEL feature (Dual-Bandwidth)? or the Dual-Channel feature require both slots to have the same size of RAM each (i.e: 1x2GB+1x2GB)?
yours answers will help me a lot, thanks

 

thank you Indrek, i took your advice and i added the Patriot 4GB DDR2 800MHz to my 2530p, so i got total of 6GB. but i have a strange issue; when opening my computer properties i noticed the following: "Installed memory (RAM): 6.00GB (5.84GB usable)" so, where is the remaining 0.16GB RAM? why the 2530p don't use ALL the 6GB? also, when only 2GB was installed in my 2530p the system tells that "1.87GB usable", the OS in both cases is Windows 7 Pro 64-bit, so why is this issue? i have an HP 6730b laptop with 4GB RAM and Windows 7 Pro 64-bit, and it shows that he is using the Full 4GB RAM, so is it this issue dependent on the system's Hardware or what?

 

Thanks Indrek for your logical explanation. i understand the case of the 100MB reserved for BIOS/UEFI firmware, but how come there is only 64MB reserved for integrated graphics? my 2530p integrated graphics can share up to 784MB of RAM for graphics and video, and when playing HD videos or operating graphics-hungry applications, the RAM in the system properties shows "5.84 GB usable" constantly, which means the system is share a constant of 64MB of RAM regardless how much the integrated graphics card is loaded?!! if there is really 64MB reserved for integrated graphics card, it should be increased from 64MB to up to 784MB when using graphics-intensive applications, and the "5.84GB usable" must be decreased more in that case, am i right?
also, my HP 6730b is using the same integrated graphics that HP 2530p use, which is Intel 4500HD integrated graphics, but as i said in my previous post, the quantity of usable RAM in System properties is the full installed 4GB (2x2GB) under Windows7 Pro 64-bit, so according to your explanation, why my 6730b is not reserving "64MB" of RAM for graphics, like my 2530p does?

 

Right on! Indrek.

 

Thanks a lot Indrek, your explanation is 100% Convincing. Go on . i will search why my 2530p is showing the word "5.84GB Usable" and the 6730b and 6930p are not showing such a thing in the system properties.