Upgrading cpu

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ricehero · #1 Post by **ricehero** » Tue Nov 08, 2005 7:04 pm

i don't know if its been talked about, but i have a 2373-9fu and was wondering if it was possible to upgrade the cpu. iam looking to maybe get it up to the 2.0 sonoma's. has anyone tried this before??

thanks

nirvana0001 · #2 Post by **nirvana0001** » Tue Nov 08, 2005 7:16 pm

is that t42? i think it should be ok.
sonoma is not a cpu name, it means Dothan processor + Intel 915 mainboard + 2915 wireless.
So you'll probably need dothan 755 cpu

christopher_wolf · #3 Post by **christopher_wolf** » Tue Nov 08, 2005 8:19 pm

755? The Pentiums I know of are 780/770/760/750/740/730...the rest are LVs down around 1.60GHz-1.00GHz; there is a Dothan 755 available? I could be wrong though

ricehero · #4 Post by **ricehero** » Tue Nov 08, 2005 8:48 pm

its actually a t41. would there be any sort of cooling issues?

dc81 · #5 Post by **dc81** » Wed Nov 09, 2005 3:30 pm

There are 3 different generations of Pentium M processors: (I don't know the exact part numbers so just bear with me)

The first gen titled "Banias" was the first to be introduced. It had a 400mhz FSB and 1mb cache.

The second gen was titled "Dothan". It used the same chipset and FSB as the first gen, except it had 2mb cache. (These processors are the ones that the model number ends in 5 such as 755)

The third and current gen was titled "Sonoma". This processor used a new chipset, with a faster FSB. Along with other new features. These processors have their model numbers end in 0 such as 760.

There is one point that I am not exactly sure of, I am not sure if "Sonoma refers to the processor, or the chipset. Also, it is pretty easy to find more technical facts and comparisons regarding these processors. Also I am by no means an expert on processors I am just listing what I remember from when I was doing research for buying a laptop.

tranle · #6 Post by **tranle** » Wed Nov 09, 2005 7:19 pm

I have done it twice putting pentium M 765 (2.1GHz) into a 2373-9fu. The hardest part the first time was to figure out from the drawing how to remove the keyboard.

It was an expensive upgrade ($400) and I still don't know if it was worth it as you quickly find out how slow the graphic processor is.

3to4 · #7 Post by **3to4** » Thu Nov 10, 2005 1:23 pm

tranle wrote:I have done it twice putting pentium M 765 (2.1GHz) into a 2373-9fu. The hardest part the first time was to figure out from the drawing how to remove the keyboard.

It was an expensive upgrade ($400) and I still don't know if it was worth it as you quickly find out how slow the graphic processor is.

Hello, I am thinking of upgrading my T42 (2373-9ZJ) to Pentium M 765, and have two questions.

1) Don't you have any problem with heating? Sometimes I do DivX encoding. So, I have to have my T42 running for 2 or 3 hours. Do you think T42 will not heat too much with a Pentium M 765? Can the fan cope with the new processor?

2) It seems to me that there are socket 478 and socket 479, and as I don't really know the difference between the two, I am really confused as to which is the correct model for T42. Can you give me some advice?

As Pentium M 765 is very expensive, I will probably wait some time before upgrading, but I would appreciate clarifications.

Thank you.

tranle · #8 Post by **tranle** » Fri Nov 11, 2005 5:53 pm

3to4 wrote: Hello, I am thinking of upgrading my T42 (2373-9ZJ) to Pentium M 765, and have two questions.

1) Don't you have any problem with heating? Sometimes I do DivX encoding. So, I have to have my T42 running for 2 or 3 hours. Do you think T42 will not heat too much with a Pentium M 765? Can the fan cope with the new processor?

2) It seems to me that there are socket 478 and socket 479, and as I don't really know the difference between the two, I am really confused as to which is the correct model for T42. Can you give me some advice?

...

I don't know about running long computational job for a long period of time. The longest I may have run was about 30~45 minutes with cpu a 100%. The fan quicked in high gear and the cpu temperature stayed around 60C.

I use the nhc (Notebook hardware control) applet, which works fine to keep the notebook cool between task.

As for the correct CPU, there are 2 sort of Dothan, the one with 400 FSB and the one with 533 FSB. I think that all the T41 and T42 use the 400 FSB. The cpu number are different: 755, 765 are 400 FSB and 750, 760, 770 are 533 FSB.

3to4 · #9 Post by **3to4** » Sat Nov 12, 2005 12:49 am

tranle wrote: I don't know about running long computational job for a long period of time. The longest I may have run was about 30~45 minutes with cpu a 100%. The fan quicked in high gear and the cpu temperature stayed around 60C.

I use the nhc (Notebook hardware control) applet, which works fine to keep the notebook cool between task.

As for the correct CPU, there are 2 sort of Dothan, the one with 400 FSB and the one with 533 FSB. I think that all the T41 and T42 use the 400 FSB. The cpu number are different: 755, 765 are 400 FSB and 750, 760, 770 are 533 FSB.

Thanks for the reply.
Well, if the temperature stayed around 60C after 30 or 45 minutes of 100% CPU usage, it should be able to continue, I suppose.

As for FSB, I am aware of the differece of FSB speed. What I don't understand is the type of the socket or package. I ran CPU-Z and it shows that T42 is a mPGA-479M ("m" means "micro", doesn't it?). On the other hand, on eBay, for instance, there is a guy selling a Pentium M 765 / 478 PPGA, and another guy is selling a Pentium M 765 / 479. I guess a 478 PPGA is not suitable for T42, but the guy selling a 479 doesn't say exactly "mPGA-479M". This is where I am confused. The best way may be to ask the seller, I guess.

tpman · #10 Post by **tpman** » Sat Nov 12, 2005 10:55 am

All T40s, T41s and T42's including workstation "P" models use the
478 pin PPGA Package and 400MHz FSB
S-Spec=SL7V3=765=2.1GHz 478 pin PPGA
S-Spec=SL7EM=755=2.0GHz 478 pin PPGA
S-Spec=SL7EN=745=1.8GHz 478 Pin PPGA

Most important thing to look for when buying the cpu to fit your laptop is to look at the S-Spec.

3to4 · #11 Post by **3to4** » Sat Nov 12, 2005 12:39 pm

tpman wrote:All T40s, T41s and T42's including workstation "P" models use the
478 pin PPGA Package and 400MHz FSB
S-Spec=SL7V3=765=2.1GHz 478 pin PPGA
S-Spec=SL7EM=755=2.0GHz 478 pin PPGA
S-Spec=SL7EN=745=1.8GHz 478 Pin PPGA

Most important thing to look for when buying the cpu to fit your laptop is to look at the S-Spec.

Thanks.
I went to INTEL site, and found out that SL7V3 is a 478 pin micro-FCPGA2. Does this means that PPGA and micro-FCPGA2 are one and the same package, and they are simply two different names for the same package?

Eugene · #12 Post by **Eugene** » Sat Nov 12, 2005 12:59 pm

the cpu which sonoma need is Pentium-mobile 7X0(Dothan 533).
T42 use a Pentium-mobile 7x5( dothan 400)
And if you want upgrade the cpu and get it up to the 2.0 sonoma's
I think you need change your motherboard also

tpman · #13 Post by **tpman** » Sat Nov 12, 2005 2:56 pm

That's correct, 2 different names for the same package.

kyrotech · #14 Post by **kyrotech** » Sat Nov 12, 2005 7:32 pm

gotta love pentium-m 101

Intel i855PM chipset (the one on ThinkPad T42) will work up to Intel Pentium M 765 Processor at 2.10 Ghz 2 MB L2 cache FSB400 Dothan core.

3to4 · #15 Post by **3to4** » Sat Nov 12, 2005 11:37 pm

tpman wrote:That's correct, 2 different names for the same package.

Thanks.

Now the thing has become clearer for me.
In any case, when I buy a Pentium 765, I will check with the seller if the S-Spec is SL7V3. (if this is not specified)

Upgrading cpu

Upgrading cpu

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