
Originally Posted by
rge
In BIOS F4, standard, turbo, or extreme settings equates to a "performance" setting on memset of 11, and somewhat loose secondary memory timings. I thinks BIOS F4 all three settings are similar to BIOS F6 standard. (ie I dont think in F4 turbo and extreme changes much of anything).
In BIOS F6, standard gives a "performance" setting on memset of 10 with loose secondary memory timings. Turbo and extreme give a "perfomance" setting of 7 on memset, which equates to about 8% gain on Sandra memory bandwidth scores and tighter secondary timings.
Two possible issues.
If it is the too tight secondary timings on F6 turbo/ext, you can get around this. I am using BIOS F6 OC E6850 to 3.9, in extreme or turbo mode, but I had to manually set all my secondary timings first (trial and error to get tight as possible), then boot to turbo or extreme mode (they are same as far as I can tell after you manually hold timings). That way my secondary timings dont change (beyond the best I could get) and I get the improved 8% memory controller boost measured by sisoft sandra in F6 turbo or extreme.
However, I tried a Eurpean early version of F5? or F6? beta, dont remember, but on it turbo set the "performance" measured by memset to 6, and I could not boot with it. Just for fun, I had memset on 11, and when I changed to 6, my computer shut off. Point is, if "performance" on memset of 7 is problem on your mobo (like 6 was on mine), not the tighter secondary memory timings, then I dont know of a way around that. Then you have to use F6 in standard, or F4 in any mode (same as F6 in standard). You could test this by using memset with F6 standard and then manually changing performance to 7 to see if you can.
Since all mobo are different, and I have different ram, dont know if my settings would help, but will post if you want. I am rock stable on small ffts, blend, and pcie 16x. But if I change one setting, I get either loss pcie 16 to 1x or unstable or reboot issues.
I wish GB would let you manually change the performance in the BIOS, ie like 7, 8 , 9, instead of only two settings, 7 on turbo/extreme and 10/11 on standard.
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