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Increasing FSB beyond 1400 decreases Memory Frequency?

post #1 of 6
Thread Starter 
Specs:

P6N-FI SLI 650i Mobo
C2D E6600
2GB G.Skillz DDR2 800
Evga 8800 GTS 320mb


I've been trying to get a FSB of 1600Mhz to achieve a 1:1 ratio with the stock speeds of the memory. However, whenever I increase the FSB beyond 1400, the memory clock lowers. It's still set to 800 in Bios, but the actual frequency it performs at begins to drop. Increasing voltages to the memory, vcore, nb, etc. haven't done anything to prevent it from dropping.

I've managed to raise the FSB to 1500, but the memory's frequency drops to 750. It's run stable like that. This gives me a 1:1 ratio, but I'd like to get the FSB to 1600 while maintaining the stock memory frequency... or at the least, know why the memory's clock is automatically being lowered.
post #2 of 6
Umm .. 1500 FSB? I've never seen this. Ever. What motherboard and CPU do you have? o_O

Anyway.. You have the set the Memory Frequency seperately. For example, 1000Mhz Memory Frequency, to lock it in place.
    
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post #3 of 6
Quote:
Originally Posted by JohnRogers View Post
Umm .. 1500 FSB? I've never seen this. Ever. What motherboard and CPU do you have? o_O
Getting a FSB of 1600 is not difficult to do with a decent motherboard and CPU. Also, you set the divider and not the frequency, it's just that the frequency is listed to tell you which divider you are picking... Make sense?

I don't know what could be the issue with your RAM timings unless you have intel's C1E or throttling enabled in the BIOS.
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post #4 of 6
^ i've never been able to get above 1500 on this board, think i need to invest in a 680i
post #5 of 6
Thread Starter 
C1E and throttling are disabled in BIOS.
post #6 of 6
Oh ... You mean Intel's FSB .. Sorry. But since you don't have any System Specs, how was I to know? You should get that fixed ASAP in the User CP.
    
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