upgrading cpu on obsolete notebook

i want to upgrade the cpu from t2390 to p7350, i tried to update bios but when i went to packard bells website i find that my notebook is obsolete and they refuse to admit my easynote bg45 ever existed, my question is this, i have extracted my bios as a rom file and i want to edit it to support the new processor, i tried installing it previously relying on luck for it to work and it powered on and then off a few seconds later, how can i get my obsolete bg45 to accept this new cpu?

 

BIOS Type: AMI
BIOS Date: April 17th 2008
BIOS ID: 64-0100-009999-00101111-041708-Crestline-T32E0000
BIOS OEM: BIOS Date: 04/17/08 Ver: 209 - 209
Chipset: Intel 2A00 rev 3
SuperIO: Unknown
Manufacturer: Packard Bell BV
Motherboard: EasyNote_BG45-U-300

 

I your laptop originally came with a T2390, I doubt it will support a p7350. Or any of the latest C2D processors.

You best upgrade path would be one of the T5xxx, T7xxx, or T3xxx processors.

http://en.wikipedia.org/wiki/Merom_(microprocessor)

 

T2390...i posted a few days ago about this....

http://forum.notebookreview.com/har...ul-processor-i-can-stick-inspiron-1525-a.html

apparently i can upgrade to T8100, T8300, or T9500

 

but if i extract the cpu data from a set of bios that supports the p7350 and patch it onto the bios in my bg45, can anyone tell me a pc with the p7350 processor?

 

I don't think that's possible.

 

all i need is the name of a pc that can use this processor, then i can extract the mod file, change the coding for the layout my motherboard and whack it on my bios and flash it to my chipset, what pc can use this processor

 

What chipset does your laptop have?

 

To get P7350 running on a 965GM chipset would require:

1. BIOS modded with new microcode to support 1066Mhz FSB CPUs.

2. The CPU to be BSEL pinmodded to run at 800Mhz, since the chipset doesn't support 1066Mhz FSB CPUs and would not even post. See http://forum.notebookreview.com/har...intel-gl960-gl40-useful-info-pll-modders.html

3. Apply a 200Mhz->266Mhz PLL pinmod to bring the CPU up to it's specified frequency. See http://forum.notebookreview.com/har...pll-pinmod-overclocking-methods-examples.html .

Is it worth going to this much trouble for a P7350? Not in my opinion. A T8100 or T8300 supports IDA, costs little on ebay and if you applied the same 200->266Mhz PLL pinmod, would be overclocked giving far better performance than a P7350.

 

thanks for the advice

 

If you're looking for an AMI bios that supports those CPUs, to extract the cpu data from, try the bios from an MSI GT627.

 

There is no way to tell. For instance the BIOS of the Acer Aspire 4315 has the necessary code to support 1066MHz FSB CPUs after applying the mod, while the BIOS on the Toshiba equium L40 doesn't.

What I'm trying to say is you have to try it to know if the latest version of BIOS for your laptop support the P7350.

QUESTION:
Do you really need the upgrade? What type of applications do you use your laptop for?

The T2390 has two cores clocked @ 1.86MHz. It is more than enough for most users. Unless you use heavy duty software such s rendering or video encoding applications there is no much point doing the upgrade. Also, if you're often using CPU intensive applications you should consider something more powerful than the P7350.

If you insist on doing the upgrade and all you can afford is the P7350, you're better off using the T7250 or the T7300. The have the same performance as the P7350. You don't need any mod to make them work, and last you can find them at a bargain price. In the UK the T7300 sell for £15 including shipment. Someone from Europe reported finding the T7250 for less than 15 euros. Those are ebay prices.

 

I'm not familiar with your laptop model but as posted before me, unless you run really heavy CPU applications, the difference in power may be not so noticeable.

I'd advise to upgrade to the maximun RAM your model supports and/or installing an SSD (if your notebook has SATA). This may eventually bring more performance than a CPU upgrade.

My 2 cents...

 

new microcode was not needed as the fsb had been reduced to what my chipset supported, looked at the table for my cpu and linked bsel pin, just need to overclock it now, temps were taken after 10 mins of resting/full load

 

my friend had one knocking around, it had 25w heat output compared to the t2390's 35w, since ive got it working one core is at 18c and the other is at 27c, the t2390 used to be 50c at resting for both cores and ran at 80c when playing valve games on full spec (my most intensive cpu use program) strangely these games do not lag now when load reaches 100%, battery life lasted 50 mins before now it lasts 180 mins (predicted by taskbar), although a good tim will help, i use gallium indium tin metal alloy

 

lol, my pc has gone into passive cooling

 

That's great that the CPU worked without any mod

The above said the performance of the P7350 @ 1.5GHz would be at best equal to the performance of the T2390 .

You didn't say anything about wanting a ULV?

 

thanks naton, your thread helped me alot, do you reckon a P9700 would also work just out of curiosity?

 

They are both same generation processors, so I think it would work.

 

rannyfash
Any C2D that has a native FSB of 1066MHz will work. If the mod works for one CPU it will work for all. I did the test with a T9900 and it worked.

What laptop are you using by the way?

 

how much did you get your t9900 for? i had a look at some processors after someone suggested looking on ebay

 

I bought a Dell Latitude E6400 with a T9900 and sold it in ebay after a few months. Before selling it I swapped the CPU with a T4200. So the T9900 cost me only about £50 to £60

Don't go and buy a T9900 yet, since as things stand it will run in your laptop at 2.3GHz only, or 2.5GHz when IDA kicks in. For know you should concentrate on increasing the FSB back to 266MHz or near 266MHz. In other words, you need check if you can apply the PLL Mod to your laptop so that you can run the P7350 at 2GHz instead of 1.5GHz.

You can read about the PLL mod here.

By the way what laptop do you have (brand and model name and number)?

EDIT:
going back to 266MHz will require both the BSEL Mod you did to force FSB 200MHz, and the PLL Mod. The PLL mod is necessary because the chipset in you laptop (I'm guessing it's the i965 or the GL40) doesn't officially support FSB 266MHz.

 

bg45-u-300, tiny little notebook but suprisingly good performance for its size, i looked inside for a pll chip but could not find one, could it be under the keyboard on the opposite side of the pcb?

 

I think it should be in the same side as the CPU socket. Check this post. It should help you identify your clock generator.

 

sorry, power surge had to replace tiny capacitors on motherboard

 

I'm interested on learning about motherboard repair. How did you know that the capacitor needed replacing?

 

before your motherboard is broken, map your motherboard with a multimeter, go round and mark down the voltage and current running through some components of your choice, i only mark down the tiny little square resistors and capacitors around the power jack, when there is a power surge, it usually only breaks a few resisters before the fuse breaks in your plug, if it was a minor surge sometimes it breaks around 10 resistors, and you can tell which ones are broken because they have different p.d and current values, find broken parts remove them, order new ones from internet, replace and jobs a gooden

 

btw carefull not to short out with your multimeter, your pc has to be on to try this and one little short could damage your pc more than a surge, be very accurate with your multimeter

 

thanks for the tips

 

Hi Rannyfish,

Did you not consider a T8100 for your BG45 ?

I would have thought the T8100 would have been supported right out of the box

 

FYI I have successfully upgraded to a T8100 on my BG45 without any need for mods or BIOS updates

 

Hi,
Sorry to bring this thread back from the dead but I am looking at upgrading the CPU on my BG45 and was wondering what you guys thought would be the best bet.

I am basically looking for a smoother performance on the few games I play on it.

As has been mentioned it does run fairly hot when working the CPU so was wondering weather to focus on a ULV or just go for highest spec and not worry about it?

Have already upgraded to 4Gb Ram and SSd and am running windows 7

Thanks for any advice

Kris

 

Hi Kris,

I wouldn't really recommend playing games on this laptop... It all depends what is throttling your games (cpu or gpu) ?

With regards to the ULV / temps ... I too was neglecting the bg45 and it got damn hot to the point where prior to upgrading the underside started to blister.

When replacing the chip with a T8100(best bang per buck imho- 15quid on ebay) I cleaned out the hsf and the really crap factory thermal paste, applied some AS5 and my temps have gone down 10 degrees ! That will be an instant win for temperatures... trust me

I still recommend a good 800mhz cpu paired with the same speed memory as I'm not certain that the t9x00s @1066mhz are compatible. Even if they are with the mods found on these forums the end result may be that the chip is throttled back to 800mhz and hence defeating the purpose of the upgrade.

5 months on I'm very happy with my upgrade and can see another 2 years life left in this laptop Like you I have an SSD and 3gigs of RAM here's a vid of her in action

It's not a mac, it's Linux - YouTube

 

Thanks Subliminal Aura,

I have already undervolted the T2390 to take a bit of the edge off the temp and have just got a T8100 off eBay for £13.99 delivered.

My main games are not too intensive, just League of Legends and Bloodbowl Legendary edition so I am hoping that an upgrade will just take a bit of pressure off the system rather than drastically improve graphics or anything.

When you say to Pair the CPU with matching speed RAM do you mean to get 4 GB ram with a speed of 800mHz as I din't think it would be supported or am I just foolish for trusting Crutials system scan? (or will the CPU upgrade fix that)

Kris

 

boop, reviving with an update, main game i play is garrys mod, i can play on full specs online no lag,

 

im finding it hard to attach images :/

 

Wow that's amazing rannyfish, and how did you overclock it?

So I'm back and looking for upgrades as my inverter is on the blink

 

I have the bg45-u-300 too and am trying to fit a t9600, when I fit the processor I just get a black screen and then it switches off. I've tried to find which pin I need to short but found two different options, which guide for bsel pin's did you use? Did you need to do anything else?

 

O.K, i sorted it, I missed a bit, there are two wires needd, now it wokrks fine at 2.1ghz!

 

Yep. Which is why the t8100 is probably the best bang per buck upgrade for this laptop. You've just throttled down your cpu to 800mhz losing 25% of its potential.

The next best thing in this machine would be a quad core but again you're looking at throttling down along with TDP concerns