ok i have a weird situation here. If i set the ram to 5-5-5-15 then raise the ht to 246 this gives me a cpu clock of 3813, the nb is at 2706 and my cpu score in vantage is 27467.
Now, if i change the timings to 4-4-4-11 and have the nb at 11x (2200Mhz) and leave the ht reference at 200 and just overclock using the multi, this gives me a cpu clock of 3817, nb @2210 and my vantage score skyrockets to 31760.
Because the actual bandwidth is so close, the lower latencies pay off more. I'd give credit to whoever mentioned that before, but I'm too lazy to look to see who it was.
next I might try the 12x for the nb (2400mhz) coz i know my system will boot at that setting, then give it another whirl to see if that provides any increase.
Sounds like a good plan.
I now leave the ram at 105ns - the next lowest setting is 75ns so i think thats a bit too low. I tried both 4-4-3-12 and 4-4-4-10 - I set them one at a time in AOD 4-4-3-12 crashed as soon as i went into anything fullscreen, 4-4-4-10 seemed fine so i went to lock it in in the bios but os wouldn't load, so im trying 4-4-4-11 now. I haven't tried 1T yet, would that provide any added performance if so?
1T can add in 300-500MB/sec, depending on overall ram speed. Some times more, sometimes, less...
I really have to thank you guys, im a bit of a noob when it comes to memory. I appreciate your help and suggestions and im slowly building up an understanding - whilst getting better performance
so thanks for the help thus far
No problem! I'm learning here too...not so much about the memory, but definately about your board!
...Im wondering about a couple of other settings now..can i change them safely?
Write recovery time = 6
Precharge time = 4
Row Cycle time = 24
RAS to RAS delay = 3
compared to my screenshot above, these settings have changed a lot since then, but ive never touched them lol...thoughts?
Write recovery time = 6......this should go to 8 above 1000mhz.
Precharge time = 4.......5 might bring more stability, but of course, tighter beings more performance....best to try and see what works best for you.
Row Cycle time = 24.........TRC is a very important timing. UP will slow the mem, down, more performance. 20-26 is normal settings, and you are right near midway..seems good to me, but again, play with and see what's best.
RAS to RAS delay = 3....this won't hcange much, no matter what memory is installed. as teh frequency goes up, so must this timing..but..for example, with DDR3 @ 1733, I run 4. You won't get 2...but going up won't give you much either.
I love doing this stuff...companies could send me parts, let me play, and I'd be more than willing to report back and send the stuff back, no cost to them. Going back in the past to like D975x chipsets, I've been talking about settings we needed as users long before they were available. My OCD means I try everything...even if there is a bit of a formula for these settings. We really need this info out for AMD set-ups, as many people, including OEMs, are pretty lost when it comes to mem tweaking on AMD...AMD seems to love Samsung HCF0, and the new elpida BBSE memory ICs( for DDR3)...but bios support must be there first, as there are far more timings that we just don't see.
FYI...4-4-4-12, or 4-4-4-15 is best for your DIMMs, and hence your issues going lower. Typically, you add up the first three to get the fourth...OK?
I should have spent that time playing my guitars.
