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Overclocking CPU without Memory

Y

YamahaAlex37

[H]ard|Gawd
Joined
Jun 23, 2005
Messages
1,775
I am having trouble figuring out how to overclock my CPU without affecting the memory on my Biostar T785 A2+, with cheap Kingston PC6400 4GB that seems to lock up my computer and peform physical memory dumps when it's overclocked.

There seems to be no setting in the BIOS for memory multiplier, the only thing I see is Memory Limit, and I set it to Manual, and set the Limit to DDR2 800, however when I go into CPU-Z, i see the Memory DRAM Frequency is 450mhz, that means it's overclocked to 900mhz, correct?

My Bios I believe is AMI 2.6, with the latest flash from Biostar, 88GAC420.BST.
 
See if you have a memory limit for DDR2-667. You'll end up underclocking your ram, but it should help you find the limits of the CPU easier. If your motherboard doesn't have memory dividers that go that low, you're going to have to deal with the memory being over spec.
 
sometimes there's a FSB/ram frequency ratio setting. I can set mine to 1:4 and my ram goes to 1600. but I can turn it down to 1:3.33 when I want to overclock so my ram doesn't go above 1600 into a non-stable range.
 
I tried DDR2-667, it put the DRAM Frequency at 375Mhz, should have been good, right? But it still froze. I even dried DDR2-533, and got a physical memory dump.

There should be some setting i'm missing, but this BIOS seems screwy.

I see no FSB/DRAM frequency ratio, or maybe they disguised it well?
 
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Are you pumping enough voltage into these sticks and do they pass Memtest?
 
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