Hi,
I posted a similar message on the "memory" forum but I think my understanding was not correct.
2 Problems:
1) I have 4GB of RAM. The BIOS used to report all 4096MB clocked at 400MHz. Now it shows only 2960MB.
2) The 2960MB are now clocked at 333MHz.
While trying to understand what happened, I stumbled upon this:
http://forums.anandtech.com/messageview.cfm?catid=29&threadid=1828238
It says that the memory speed is tied to how much memory you have. Th emore memory, the weaker the signales get, the slower the BUS may be. In my case, with 4GB I can't go faster than 333MHz.
Unless I was drunk, I remember clearly that the speed was 400MHz. So I don't have explanation for the 333MHz and for the 2960MB (instead of 4096). On th e4096 I'm sure: I was SO looking forward to see BIOS spit out a number larger than 512 ...
So here are some questions for this forum:
1) are you aware of DDR speed limitations when 4GB (4 dual-sided DIMM) are used?
2) do you have any clue of why the max memory available is 2960MB only now? I run memtest86 for several hours on each DIMM individually and on pairs: no problems (and clock always on 400MHz). I doubt it's the memory. I tried to use all the slots on the MoBo: no problems UNLESS all 4 modules where installed. So this may be a limitation of the architecture. But then again, why all of a sudden???
3) what type of SW/HW tests can I run to determine with certainty (or max likelihood) what's faulty in this system?
4) anybody else has an A8N-VM and is experiencing something similar?
Thanks ...
I posted a similar message on the "memory" forum but I think my understanding was not correct.
2 Problems:
1) I have 4GB of RAM. The BIOS used to report all 4096MB clocked at 400MHz. Now it shows only 2960MB.
2) The 2960MB are now clocked at 333MHz.
While trying to understand what happened, I stumbled upon this:
http://forums.anandtech.com/messageview.cfm?catid=29&threadid=1828238
It says that the memory speed is tied to how much memory you have. Th emore memory, the weaker the signales get, the slower the BUS may be. In my case, with 4GB I can't go faster than 333MHz.
Unless I was drunk, I remember clearly that the speed was 400MHz. So I don't have explanation for the 333MHz and for the 2960MB (instead of 4096). On th e4096 I'm sure: I was SO looking forward to see BIOS spit out a number larger than 512 ...
So here are some questions for this forum:
1) are you aware of DDR speed limitations when 4GB (4 dual-sided DIMM) are used?
2) do you have any clue of why the max memory available is 2960MB only now? I run memtest86 for several hours on each DIMM individually and on pairs: no problems (and clock always on 400MHz). I doubt it's the memory. I tried to use all the slots on the MoBo: no problems UNLESS all 4 modules where installed. So this may be a limitation of the architecture. But then again, why all of a sudden???
3) what type of SW/HW tests can I run to determine with certainty (or max likelihood) what's faulty in this system?
4) anybody else has an A8N-VM and is experiencing something similar?
Thanks ...