Originally Posted by Jejuni
I'm now fairly certain that the offset Vcore is working as intended (as in, adding the correct value I set on top of the VID), but I still can't get Intel Burn Test to reliably complete, but it's really weird.
Yesterday I reflashed my BIOS, set up all BIOS settings according to this guide and my offset Vcore to +0.03. Then I ran 50 runs on maximum ram and then 750 runs on regular Ram with IBT and got no errors. Additionally I also ran prime95 in blend mode with 90% RAM for 20 hours and got no errors/BSODS/whatsoever.
Then today, without having changing anything (all I did was restart the PC) I ran IBT again on maximum for a final check and it failed on the ~17th try.
Should I just simply add more offset to get it stable or am I overlooking something?
I just bumped up my offset to +0.075 (which resulted in a Vcore of 1.32-1.33 during load) and tried running IBT, it failed on the 2nd try. Increasing the offset and therefore the vcore made it fail sooner... I'm clearly missing something, but I don't know what it is.
Temps never went above 85°C during IBT @ 1.33V
I have heard of people saying that they needed to find the right vcore for a multiplier, as in not too low and not too high. To be honest I don’t use IBT that much, I use it to check temps and run it on max for a reasonable number of runs to check, but 24 hours of Prime95 with 90% ram used with no instability or WHEA warnings has been what I like to use best. You can also download Intel’s extreme tuning utility and run that stress test.
If I can pass Prime95 and XTU for 24 hours and then use the machine for everything I do on it for a while and see zero instability then I figure I am good. You can try folding with your machine also, that is even more a test but it will take days or weeks of that to see. Based on your manual vCore tests you should be able to use an offset of .02 at most. If your mobo isn’t crazy about offset, your vCore is low enough that you can use manual all the time if you want – that is up to you. I would not use a large offset, just to use offset.
Originally Posted by h3llkill3r
no errors found
maybe push for 5Ghz?
Might be a little high, but you should be able to go higher. Just keep those temps in check. It can be stable at 70c and not at 90c.
Originally Posted by khicon
I need help with OC. I've been following the guide and not with much luck. Here's what I'm trying to achieve:
1. OC to 4.5ghz - 4.7
2. OC Memory to 2800mhz if possible.
Here's what I have:
ASUS Maximus V Extreme Z77
G.SKILL Trident X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2666 (PC3 21300) Desktop Memory Model F3-2666C10D-8GTXD
Intel 120GB 520 Series Sata-III 6.0GB/S SSD
Cyberpower 240 Water Cooler Kit
Corsair cmPSU-850TX V2 Power Supply
Evga Nvidia Superclock Geforce gtx 660 ti 2gb 16X pci x2 in SLI
I've set everything like the guide said. I then try to get a 4.5ghz stable but worker fail on me on a 8 test. Fail @ vcore: 1.250v Dram: 1.670v
Please help. Thank you!
Edit: forgot to mention my vid. They are 1.326 and 1.321 although 1.321 show up more.
Don’t try to oc ram and the cpu at the same time. Put your ram at the manufacturer’s recommended timings and voltage, then concentrate on the cpu oc. Once the cpu is stable then you can look into a ram oc.
No one can tell you what you need for 4.5 until you test it. I had one chip that had to have 1.33v, and another that could do it at less than 1.2v. You should be able to do 4.5 at less than 1.35v, if not you got a bad oc chip, that is just the luck of the draw. Just make sure all your settings match the guide, and make sure you have the new 1707 bios.