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Download ASUS PTGD1 LA Motherboard Driver Update Utility. BIOS HP Pavilion a629hk Desktop PC (ap), BIOS HP Pavilion a630n Desktop PC Driver.

I'm interested in upgrading the CPU on my wife's desktop computer, which is an HP Pavilion a747c with a product number PJ514AA (circa 2004/05). This computer has an OEM-spec motherboard (ASUS model: PTGD1-LA; HP/Compaq name: Grouper-UL8E). Specs for the computer and motherboard are listed on the following URLs: Computer: Motherboard: According to the spec sheets, the base CPU is an Intel Pentium 4 520 (2.8 GHz), 800 MHz front side bus, Socket 775, Hyper Threading technology, and the motherboard supports Intel Pentium 4 HT processors that fit Socket LGA775 up to 3.4 GHz. I've found a couple of potential upgrade options for the 3.4 GHz speed, but one of the options (Pentium 4 551, $286) is much more expensive than the other (Pentium 4 640, Prescott core, $100). The only difference between the two processors appears to be the amount of L2 cache.

For some reason, the 551 chip has only 1 MB of L2 cache, but is almost three times as expensive as the 640 chip with 2 MB of L2 cache. (My current CPU, the 520 chip, has only 1 MB of L2 cache.) So here are my questions: 1) Will both of these chips work as an upgrade on this particular motherboard? 2) If so, which one would perform better? I'm tempted to go with the 650 chip (2MB L2 cache @ only $100), assuming bigger is usually better, especially since it's cheaper, but I want to make sure that this CPU is actually compatible with my system. TIA for your feedback. Hello and welcome to the TSF. According to the specs you listed it should support either cpu, however the 650 is a slightly cooler runing cpu than the 551 and the 650 will support a 64bit OS while the 551 will not.

But, you may need a bios update from HP to support the 6XX cpu's and I'm not sure if HP ever bothered to update that far ahead.In reality however there is no major performance gains going from a 520 to a 551 or 650 (maybe 5% or so) I'd say you're probably better off adding more memory by replacing the 2 X 256 modules you have now with 2 X 1Gb from Crucial, Corsair or Mushkin (use their memory advisors for compatible memory). Quote: Release Date: 2006-05-10 Version: 3.28 Description PTGD-LA/PTGD1-LA/PTGD2-LA Motherboard BIOS update resolves boot issue when HP Photosmart 8250 printer is connected. Fixes # Resolves boot issue when HP Photosmart 8250 printer is connected. # Resolves intermittent issue with resuming from suspend mode. # Updates processor microcode to support newer Intel CPUs.

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Operating System: Microsoft Windows XP Home Microsoft Windows XP Media Center Edition Microsoft Windows XP Professional Do you know if Intel released the 650 processor prior to May 2006? BTW, why can I only expect a 5% performance gain when going from 2.8 GHz to 3.4 GHz? (3.4 / 2.8 = 121%, so I thought I might get a more noticeable improvement.) FWIW, I'm installing a new graphics card, too (EVGA GeForce 8600 GT), which I will be using to drive a HD monitor via the DVI port. That's why I'm thinking about upgrading the CPU in addition to the RAM. The 650 was released in 2005, so that should be okay. Reviews of the 551 and 650 don't show more than a 5% increase in peformance over a 520, what the newer cpu's offered was lower voltage requirements and cooler running, along with (on some cpu's) 64bit OS support, they are all essentially the same cpu's just refreshed a bit as time went.

When you update the ram, be sure to add the memory in matched pairs since your mobo supports dual channel memory, thus the reccomendation to remove the 2X256 and add 2 X 1Gb. Since the version of XP you are running is a 32bit OS you can't take advantage of more than 3.25-3,5 Gb if memory (its an OS limitation) and you may encounter instability with more than 2Gb.

To install a 8600GT make sure your psu is up to the task, standard HP computers come with very poor psu's and are typically woefully underpowered for any major upgrades other than an additional hdd or two. (yours is a 300W unit, not enough imho) Also with a mATX mobo be sure that you have the room in the case for the card. The 650 was released in 2005, so that should be okay. Reviews of the 551 and 650 don't show more than a 5% increase in peformance over a 520, what the newer cpu's offered was lower voltage requirements and cooler running, along with (on some cpu's) 64bit OS support, they are all essentially the same cpu's just refreshed a bit as time went. When you update the ram, be sure to add the memory in matched pairs since your mobo supports dual channel memory, thus the reccomendation to remove the 2X256 and add 2 X 1Gb.