PC3500+ RAM in a PC3200 computer

September 21, 2010 at 14:01:50
Specs: Windows XP
One of my older computers has a board (Abit AN7) that takes DDR400 RAM, and I was told I can use PC3500 RAM in it.

Besides PC3500, how far up can I go from PC3200, and are there any advantages to even going beyond PC3200 on this motherboard?


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September 21, 2010 at 14:17:20
It uses pc3200 ddr 400 ram. 2 gigs is the limit. That's about it on that board.

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September 21, 2010 at 14:57:39
I didn't look up your board, but the "7" in the name tells me it's an Athlon XP board. So, you can put PC3500 (DDR433) in it, but:

-It will default to PC3200. You'll have to overclock the CPU FSB to get the memory to run at DDR433. If you have a 400MHz FSB Athlon XP, you'd bump the CPU bus speed to 216MHz and keep the FSB:DRAM ratio at 1:1. This would result in a slight performance boost over PC3200.

-If your Athlon XP has a 266 or 333MHz FSB, you'd have to underclock the memory to DDR266/PC2100 or DDR333/PC2700. Running the memory at DDR433 would actually hurt performance. Socket A was very picky about its FSB:DRAM speed ratio. It's very important to keep it 1:1

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September 21, 2010 at 17:53:45
Excellent answer by jackbomb...follow his advice.

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September 21, 2010 at 21:41:17
Thanks for the replies.

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