v2000z ram help, speed for two slots

Have two v2000z. One with cpu ML-30 1600mz, and one with ML-37 ie 2000mz cpu.
:fujitsu:
With one slot loaded get 166 speed. But if load two slots speed backs off to 133. Have tried many combinations of hp certified ram. Current config. is both slots loaded with 1gig each. Anyone know how this can be corrected? Bios is current at F.06. thanks for viewing.

 

we are having the same problems regarding the ram. mine is at 160mhz with 1x256 and runs 133mhz with 2x256

check this thread

http://forum.notebookreview.com/showthread.php?t=19786

 

Thanks for the thread info. Have got my ram running great, ie overclocked pc2700 running at 200mz.

 

can you share your settings on the program you used?

 

was able to do but found that all a64 settings eventualy crashed. Still have the same problem. ie one stick ram fine 166, two sticks and it always drops to 133. Has anyone found a solution for this problem ?

 

What I think it is, is the fact that the AMD memory controller uses all RAM as a single source of RAM and since the max Bandwidth for the CPU is 2.7 gigb/s if you have 2 chips each one gets 1.33 if you over clock it you might be able to push the upper limits of that band width. If you use one chip you will see higher bandwidth becuase its not sharing bandwidth with another chip.

The sharing isnt slowing you down in fact it allows you to run at a consistantly higher bandwidth without over taxing either chip.

The only numbers on the Max bandwidth of a Pentium M system,I was able to find, were around 1.8gigb/s but I havent seen alot of data nor did I see the type of RAM that was being used.

I do think that because the AMD has built in memory management it has an advantage.

 

I thought that AMD CPUs have unlimited memory bandwidth because the controller runs at the speed of the CPU.

 

I got that number from this article

http://www.thejemreport.com/mambo/content/view/73/42

Under the section on models he states that the max bandwidth is 2.7 gigb/s for the planned AMD mobile chips.


here I have quoted the section im talking about

 

I believe that the bios will need to be updated. This unit is fully capable of running not only pc2700 at a proper speed of 166 but also pc3200 at 200mhz.
We need to somehow resolve this. Otherwise this is a lot of great engineering in this unit wasted. Any ideas folks?

 

Azgard how do you know that its capable of running both?

P.S. You might be right and all it is, is a bios issue, maybe they just limit the bandwidth for power saving issues.

If you find a way to get faster RAM to work then great but for now I am sticking with PC2700 RAM and I will know that I still have a very good machine.

 

As in my first post I have two laptops. With a64 both units will run stable at pc2700/333, and run very well. However on reboot the laptop drops the stored change and reverts back to 133. The unit specs call for the ability to run pc2700 at 333, not just one stick at 333. The unit is also able to run at 200mhz as FSB shows. I was able to confirm this by overclocking my pc2700 to pc3200 level running at 200mhz. I agree with you on pc2700, but I would be very happy if the unit could just run 2 sticks of pc2700 at the proper freq (and that is 166 not 133 )

 

I understand, I am just trying to find out the truth behind the technology. I would love to see that we can use DR400 RAM or at least have the pc2700 run at full speed.

I do think you have a bit of an Intel logic pattern that doesnt fit the AMD memory manager. What I mean is that even though it looks like you are not getting the most out of the RAM I think you accually getting better RAM access then you would with most pentium Ms even with DDR400.

Between the needs of an external memory controller for the intel and the bandwidth restrictions of the bus even with HT you are lucky to get a consistant 1.8 gb/s were as the AMD turions gives 2.7gb/s without the faster RAM.

So basically you get more memory bandwidth and less latency using the AMD solutions.

 

Another way to look at this is, if I run one stick of pc2700/166 the whole computer works much better, and I can see the difference as I run the unit and also test the proformance and confirm that.

Problem I have is, I have identical 1g sticks of HP ram each will work at 166 buy it self, but if I try to load both sticks for a full load of 2G memory it drops to 133, and even though I have more memory great, but the price payed for that is a clear loss in speed.

 

I look at it this way. If you have one stick of RAM you are getting about 1.6 gb/s but if you are running 2 sticks even though they are only running at 1.33 you are accually getting 2.7 gb/s becuase you are using both sticks.

Remember the AMD has the memory manager in the CPU so the bottle neck in not the memory bus but rather the CPU's max bandwidth.

 

FSB is set at 200MHZ on the AMD turon chips?

 

Im more confused I just read this article and it says, well you can read it

http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_10220_10221^10233,00.html

Basicly they are saying it takes PC3200 as well as the PC2700.

I think it might just be something HP shut down to keep the systems power usage down.

I just found another article that talks about the Turion specifically and it doesnt mention the higher memory speeds.

So Im back to the basic Idea that the AMD Turions dont have all the bells and whistles of the desktop chips and one of the limitations is a bandwidth of 2.7 gb/s.

there for it looks like the best setup would be 2 1 gig RAM chips both running at 1.33.

That way you would have 2.7 gb/s bandwidth without over stressing the RAM.

 

I don't think so as the laptop normaly runs at 800mhz but when apps call for more cup speed, the "Power Now" cuts in and will take it to the max cpu speed you have. In my case that is the 2.0 processor. FSB of 200 alows the ram to run at it's max ability, also that helps the cpu do it's work with less stress.

 

Im not sure what you are saying. I understand that the CPU has the "Power Now" to keep the cpu power down when its not needed(which is a nice little feature by the way) the point is that the AMD doesnt treat RAM like an INTEL does so you are getting full bandwidth even if it looks like you are not.

I'm not 100% on this since there is very little in the way of information on the tech but I do know that the AMD memory manager means that there is no bus bottle neck rather you are limited by the CPUs ability to use the RAM. If you find any information I am all ears.

 

I agree same here. Only thing I do know is it will run pc3200 level and it is sweet.

Anyone else know more on this subject?

 

Azgard,

Do you notice a difference in the computers responses or is it something you are reading off the RAM test software?

 

Unit clearly functions much faster with one 1g stick at 166 than two 1g sticks at 133.

 

Thats Bazaar, I really dont think that is how it should be. Have you tried communicating with Tech Support?

I mean someone that accually knows what they are talking about at HP. I find it best to work patiently with support and have it esculated to real tech people and not just the check your plugs people. It might be something with the bios or something else we might not know about.

 

this issue is showing up in many threads. I for one find this very disturbing. among the latest "Compaq Presario V2000 (2312US) Memory Conspiracy!!

any ideas?

 

heh, that was me. I will have to pull out a 512 sick and see if it runs at 166. this is a MOTHERBOARD issue and has nothing to do with powernow and some other speculations being made. the turion should run at whatever fsb its given, but the MB is limiting this.

 

This is a pretty important issue.

The Mods should merge Alphafox's 'conspiracy' thread and this one in order to achieve a better discussion. Heck, it should even be made a "sticky" until things are sorted out.

I'm definitely not buying one of these models until I know exactly what's going on.

 

There were some Athlon motherboards a few years back that had this issue, they would operate at 166 instead of 200 if all the memory slots were occupied

If it is 166 with one dimm, then I will probably just buy a 1GB stick and sell the 2x512s.. anyone interested?

 

I had this issue with my Acer TM. However, my memory ran at PC2100 266MHz speeds wether it was one stick or two. Acer released a BIOS update - now the memory runs at the proper PC2700 333MHz speeds.

I suggest waiting for a BIOS update to be released by HP.

 

WAIT for HP?? hahahah
they stated that the motherboard only runs at 133, I doubt they will release a bios update...

 

HP support people have a habit of making stuff up when they don't know the real answer just to get rid of you. I wouldn't give up on a BIOS update.

 

Its confirmed that running 2x sticks slows it down to 133mhz. I pulled out the second stick and now its running at 166. I wish I could adjust the T1 timing tho, I get an extra 200mb per second by enabling it.

1GB SoDimm ordered for newegg, $123 afer shipping

Old 2x 512MB ram for sale:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=6800624560&ssPageName=STRK:MESE:IT

 

Hummmm... I got 2 sticks of the "free" 512 ram from Best Buy and CPU-z reports I am running at 159.2

 

so did I and its 133 for me

 

maybe the BIOS or main board? I have

Mainboard and chipset
Motherboard manufacturer Quanta
Motherboard model 3093, 47.0D
BIOS vendor Hewlett-Packard
BIOS revision F.0A
BIOS release date 08/09/2005
Chipset ATI Radeon RS480 rev. 01
Southbridge ATI SB400 rev. 00
Mainboard and chipset
Motherboard manufacturer Quanta
Motherboard model 3093, 47.0D
BIOS vendor Hewlett-Packard
BIOS revision F.0A
BIOS release date 08/09/2005
Chipset ATI Radeon RS480 rev. 01
Southbridge ATI SB400 rev. 00

Memory
DRAM Type DDR-SDRAM
DRAM Size 1024 MBytes
DRAM Frequency 159.2 MHz
FSB RAM CPU/5
CAS# Latency 2.5 clocks
RAS# to CAS# 3 clocks
RAS# Precharge 3 clocks
Cycle Time (TRAS) 7 clocks
Bank Cycle Time (TRC) 10 clocks
DRAM Idle Timer 16 clocks
# of memory modules 2
Module 0 Kingston DDR-SDRAM PC2700 - 512 MBytes
Module 1 Kingston DDR-SDRAM PC2700 - 512 MBytes


??

 

My bios is slightyl older, but HP says im on the latest version. even chatted with support, they said it was the latest untill we got cut off...

The only other difference I can see is that you got the kingston ram and I got the K-data. I have a V2000, not V2000z whatever that is. its V2312US

 

HP doesn't always keep their software & drivers pages up-to-date and the frontline support techs generally don't know about anything not on those pages. Ask them where BIOS F.0A dated 8/9/2005 is (shouldn't that be BIOS F.10?) since Anijake's machine came with it. That might get them to go hunting.

Anyhow, at least we know there is a fixed BIOS out there.

 

and after I allready bought the 1GB stick...
The tech guy had no idea about the bios update

I will have to see if there is really a new bios update, lets not assume there is a fix for this yet...

 

http://search.hp.com/query.html?hpv...mit.x=5&submit.y=5&qt=bios+f.0a&la=en&ctry=us

I have tried the above hp search and can find nothing with release data simular to:Anijake info


Anijake maybe the BIOS or main board? I have

Mainboard and chipset
Motherboard manufacturer Quanta
Motherboard model 3093, 47.0D
BIOS vendor Hewlett-Packard
BIOS revision F.0A
BIOS release date 08/09/2005

every thing seems to say this is a old bios. My laptop is a V2000Z i.e. the turion cpu. I did contact hp and got the india group, statement is the .06 is current, same as we all have been told. They did express concern that it droped to 133 with two sticks. took my email and phone, said would respond but that was over a week ago.

let's stay on this and work togeather . best regards
Azgard

 

see the other thread, its the bios. the F.0A works with the V2000 and supports up to 200mhz if its a PC3200 dimm
we extracted the bios from a working F.0A machine

 

Oh, if anyones wondering how I actually flashed the bios with the new file:

do the same steps in the thread above to backup the bios
when you get to the point where the phoenix flash utility starts, go to the temp folder
in there will be a file called 3091F06.WPH , which is the F06 bios
download the new bios from this thread
rename the downloaded bios (after unzipping) to that file name (3091F06.WPH)
move the file to the temp folder, overwriting the old F06 with this new file which is really F.0A
go back to the phoenix utility and continue, at the last prompt before it flashes it should list the upgrade to bios ver as F.0A

Good luck!