so right now heres what i have
BCLK:133
Multi:20
Turbo Mode: Off
QPI Freq:4800
memory:1600 6-8-6-20 timings
Voltages
Vcore:stock 1.25v
VTT: +0mV (1.0v)
QPI PLL: 1.1v
Vdimm: 1.6v
IOH: 1.12v
So i should drop the Memory to the lest it can go and then lower the CPU multi the lowest itll go to but click the BCLK to find the max BCLK but still at stock 2.6GHZ, then once i find that(is booting and seeing if itll run int windows be good or should i do like 15 runs on LinX?) increase the multi till i get to a desired clock or till temps hold me back. then last thing would be memory stuff??
Normally I go for bclk first, but I think that your memory needs particular focus before we move on. Be very cautious of settings that are that aggressive, ddr3 1600 @ 6-8-6-20 @ 1.6v is really just memory that was overclocked using higher voltages, but even so that is VERY aggressive. It's good to verify that it works at the posted numbers, but is that what spd says? It's easy to check spd in cpu-z, just check it out and make sure that you got the correct memory. Assuming this is the case, then you need to make a boot disk of memtest on a thumb drive and set your bios to boot there. Go
here for memtest86+. and click on:
Download - Auto-installer for USB Key (Win 9x/2k/xp/7) . Run 20 passes or so, it will take quite a while. Assuming you pass this then your memory is stable and we can proceed to part 2.
Part 2: Now we'll go attack bclk. As I stated earlier, drop your multiplier down as low as you can and put all voltages down to stock. You can even change qpi back to 6400, but I'd just leave it at 4800 now since you're going to end up over 7000 once all's said and done anyway. My board has tons of settings that I only have a limited understanding of, I have two separate dividers for qpi for example, clock skew, performance settings, etc etc. I'll need to look at screen shots from all your bios overclocking sub-screens to see what you have so that I can compare it with my settings, but generally speaking I set everything at this stage to the most relaxed settings I can because I know that I'm going for a 50% + bclk overclock. Ok, once you've done as much as you feel comfortable messing with, start with 150 bclk and jump up in increments of 10. I think I can get to 180 with everything stock before I have to start changing, but every board/cpu is different. Once you start getting issues then start to crank up the QPI DLL voltage. This could be the only voltage that you have to change for max bclk, it's all that I did at least. Once you get a boot issue, windows freeze, bsod, etc and have to start increasing qpi dll voltage then it's a good timet to start stress testing with the higher voltages. I like linx and seti@home, though many people seem to favor IBT these days and OCCP is always good as well. Just make sure that you don't have cpu-z up at the same time as OCCP. Regardless, I will normally just go 5-10 minutes at lower bclk settings just to make sure there's nothing crazy going on. Once you get to 190 or so, however, you need to test for an hour or two, and especially if you're going for 205+ you need to test overnight. With your mobo and a d0 i7 920 I'd shoot for around 210, that would get you 4.2 iwith the 20 multiplier and is almost certainly as high as anyone on air would go for 24/7 use.
Step 3: If you've put in the time/effort on steps 1 & 2, this is by far the easiest. Just plug in your stable multi/dram settings with a very low multiplier to keep it around stock speed (say 13x200 for starters or whatever) and keep rebooting without changing anything until you get a freeze/bluescreen/etc. Again, this varies by system but with my rig I can get 20x180 without changing anything at all, or 18x200 if I've already dialed in my bclk overclocked settings. Going in steps of 200 mhz or so, you'll find that either at 18x200 or 19x200 you've got to start adding vcore or cpu vtt usually. However, from what you wrote earlier you might be able to boot to windows at 20x200 or 19x210 without issue. Regardless, if you haven't experienced any issues by the time you get to 4ghz you need to do some long term stress testing. I'd shoot for at least an hour at this poitn. If you're at 19x210 and you want 20x210 or, say, 20x205, then just repeat the same step. Once you have passed an hour with your preferred OC stress testing method, then throw a bunch of hardcore games, I personally like crysis (original) demo and 3d mark 11, but choose whatever you like here. If everything seems to work well, put it back on the stress testing program overnight (8 hrs minimum). If it hasn't overheated/blown up/etc by this point then you're stable.
Regarding temps, many people freak out at higher temps. Personally, I don't care as long as it runs stable and it's not throttling. When I was at 4.2 last summer I actually got over 90c on one of my cores several times during stress testing, but it ran everything I threw at it stably for 3 wks with no hiccups/throttling/etc. Usually when you get that hot something else will also get too hot and cause issues, but I had 5 fans on high in my antec 900 cases and apparently the system got enough airflow that there weren't any problems.