Socket 754 & 2 Gigs RAM

knownalien

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Jan 23, 2003
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I have a Sempon socket 754 (1.6 Ghz) and a clawhammer socket 754 (2.2 Ghz). The sempron can run two one gig sticks at DDR400 and passes memtest fine. The faster Clawhammer runs the same sticks with errors at memtest #5 at the very end on two different motherboards. I am well aware of the problems with the socket 754 running anything bigger than 1 gig, but since one can do it, I am wondering if I stand a better chance at getting a 754 Venice core? It is supposed to have a better memory controller and since my clawhammer is an older generation (the first that came out) perhaps later cores are better. I don't OC. I just want to run 2 Gigs at 1T @ DDR400. any suggestions? I want to stick with socket 743 because in time I will just move to DDRII.
 

K8MAN

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You could try more voltage to your RAM and playing with all of the other setting's. I have never had a problem with 2x1gig's on my 754 setup.
 

HideOut

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Yep, the early AMD 64's couldnt recognize but a certain number of memory banks. The newer revisions can recognize more banks and therefore easier to recognize higher numbers of RAM. 2 Gig is likely 4 banks even when on 2 sticks. if your tryin to use 4 x 512 that might actually be 8 banks of memory and unusable to most earlier A64's...

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knownalien

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Yep, the early AMD 64's couldnt recognize but a certain number of memory banks. The newer revisions can recognize more banks and therefore easier to recognize higher numbers of RAM. 2 Gig is likely 4 banks even when on 2 sticks. if your tryin to use 4 x 512 that might actually be 8 banks of memory and unusable to most earlier A64's...

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yes, 2 gigs is 4 banks. I have two sticks. I called AMD and they said they would take the CPU and validate it to see if it can run two gigs. At this point, I am sure that something is wrong with the CPU that only memtest shows.