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  upgrading cpu in presario 900 laptop 
 
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artem slivkaa Jan 22, 2004, 11:09am EST Reply - Quote - Report Abuse
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I have a compaq presario 900us laptop which has;
Amd Mobile Athlon Xp 1700+ processor.(266mhz fsb) Thoroughbred
To all of you experts and newbies out there i have a question to ask. the question is this. is possible to upgrade the cpu on my laptop. there are mobile cpus sold on the market like at newegg. i just don't know if my motherboard will support or can support a cpu upgrade like a barton or thourghbred 2400+ or 2500+ athlon
Thanks for any help in adavance


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Ali Jawad Jan 22, 2004, 11:19am EST Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
I highly doubt that the CPU can be upgraded in laptops because manufacturer's embed the CPU directly onto the motherboard. The only things that can be modified in a laptop are the amount of RAM, the hard disk drive, and the modular bay (if yours has one).

Processor: Athlon XP 2100+ (Palomino)
Motherboard: GA-7VAXP (Revision 1.1)
Memory: Micron's Crucial 512MB PC3200
Video: ATI Radeon 9600 AIW - 128 MB DDR
PSU: 400W Hercules
HardDisks: Western Digital 40GB + 8MB Cache, Seagate 20GB
Operating System: W
Jack C Feb 28, 2004, 03:07pm EST Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
I have the same laptop. It has the quick release socket A. I do not think you can go to a BARTON mainly due to the 266FSB. I am in the process of attempting a 2000XP TB since the 900series actually ranged up to this speed. Will update.

Carter Sudeith Feb 28, 2004, 03:18pm EST Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
You would have to buy the mobile version and here's why. Your motherboard can't supply voltage over about 1.4 volts, while a regular desktop Athlon uses 1.65. Your board will not support a Barton, because it has more onboard cache.
http://www.newegg.com/app/ViewProductDesc.asp?description=19-1...amp;depa=1
Play it safe and get that 2200+, your board is limited to 256K L2 cache.

Carter Sudeith Feb 28, 2004, 03:20pm EST Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
Okay run Aida32 and tell us the specifications on the motherboard.
Sandra could tell us this too, we just need to know what the maximum cache on there is.

Jerry Tu Apr 18, 2004, 07:17am EDT Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
I read in another forum that someone upgraded their Presario 906US to a Mobile 2500+ Barton, but that PowerNow! no longer functioned.

I have a Presario 900z with a 2000+ T-bred. I'm thinking of upgrading to a Barton core too. I don't think the FSB will be a problem. According to New Egg, all the Mobile XP's run at 266FSB. I'm just worried about the extra L2 cache, and this PowerNow! issue.

Stephen Hoffman Apr 24, 2004, 03:13am EDT Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
I have been researching the issue for a few weeks and, in no small part to the info recieved here, purchased a mobile 2600+ for a "what the heck, Ill try it" whim..... aida32 states the "maximum cpu speed" is 2000. for some reson, the mobile 2600 is found @ pricewatch @ 2.133. Newegg is selling the same thing @ 2.0...... I have a 906us and upgraded the mem from 256 to 1 gig, the proc from 1500+ to 2600+, the hdd from 20gig 2 meg cache 4200 rpm IBM to an 80gig 16meg cache 5200 rpm after the upgrades and having paid 400 for the laptop @ a pawn shop, I got a 1000$ computer for 750...... plus I have parts to start to build another laptop for my wife.

and btw... yes, the powernow! is not working, but I really dont care at this point, my laptop is ALMOST as powerful as my desktop, if I could upgrade the video, I think I would, but as it stands, it plays ghost recon and MOHAA @ 1024x768 low detail and 25-30 fps.

honestly, the hdd was a 1.0 amp power draw where as the new one is only .6 amp. the fan kicks in only slightly more often, but all in all, I think I lost 10 minutes of battery time playing a DVD or game. no percievable loss of battery time surfing or word processing.

I hope this helps you guys.

Stephen Hoffman Apr 24, 2004, 02:31pm EDT Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
one more thing.......

since I upgrade HDD and all at the same time, I had to reistall the os as well...... looking at amd's site, they say that the "current xp" version needs a driver update. going to microsoft, the have this website on the subject, which gives a driver and a reghack to possibly fix the issue.

http://support.microsoft.com/default.aspx?scid=http://support....bContent=1

I will report back on the results of this for the presario 900 series within 48 hrs.

Lawrence Heffernan Apr 25, 2004, 05:29am EDT Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
Hmm, what videochip is in this Laptop, and is it replaceable?

Stephen Hoffman Apr 26, 2004, 01:44am EDT Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
no, the video subsystem has a zero footprint, which helps the 900 series keep down cost. the memory is system shared, and the gpu is integrated into the ATI 320 northbridge .... kinda like the nforce IGP with the gf4 mx440, only this is the radeon 7000.....


and on to the powernow issue....... the point brought up here has gotten me researching the issue and have found a few interesting facts.

#1 Windows xp needs a seperate driver for the k7 to utilize the powernow!
#2 in the registry @ HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\AmdK7\Parameters
(which did not exist on my machine after the upgrade) gives you the option to turn powernow on or off.
#3 why was it not there? well, it seems the bios does have to have the correct stepping table for it to regulate the multiplier (which makes sense......) so it is a bios update issue to get powernow to work on a 2600 barton revision 60a...... others, who knows, I am only able to test with this setup.....
#4 if the power consumption is an issue for you, there is hope.....cpumsr will allow you to change voltage and multiplier on the fly in windows manually...... I can turn my 2000 mhz 1.45 volt 15x multiplier barton 2600+ into a 500 mhz 0.925 volt 4x multiplier chip. I can go as high as 1000 mhz on the 0.925 volt setting, but it seems to me that there would still be power drain excess at the higher multiplier. 500 is fine for surfing and watching a dvd anyway.
#5 the battery life between full on 2000 mhz and 500 mhz is 38 minutes watching a dvd, 45 minutes surfing w/ wireless 802.11g card, and 52 minutes using word.
#6 the 900 series laptop is hindered from going beyond the 2000 by a 133 fsb and a 15x multiplier cap.


I hope this has helped someone out there who might be looking at the same scenario. If anyone has any questions, feel free to email me @ ddogg at bellsouth dot net. hopefully, compaq will see fit in thier infinite wisdome (do you smell the sarcasm there?) to update the bios to address barton chips in the 900 series, but since I have no faith in this mindless corporation or any of the clueless drones that are unlucky enough to be employed there, I will look into doing it myself...... its is , after all, only a 512k file..... how hard can it be?????????????????????? yeah right

denni li Feb 07, 2006, 02:37pm EST Reply - Quote - Report Abuse
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>> Re: upgrading cpu in presario 900 laptop
i have a compaq presario 900us with 1.3 ghz, 784mb(upgraded), 80gb(upgraded). the cpu fan got berserk and makes a noise when i jerk my laptop. i bought a replacement part and now is thinking of upgrading the cpu as well. HOW much power can i upgrade my cpu considering i have no idea what MOBO it has. i want to push it up 2ghz.

thanks all and have a nice year(2006)


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