The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review - Page 3

From people I have talked to you do not need too. It actually will make your multiplier go crazy. Try both ways, with GIGABYTE boards at least you do not have to use it, and shouldn't, maybe ASUS hasn't gotten their stuff straight yet. People have been PMing me a lot about problems with their BIOSes.

You can try, but i bet there is no difference. Power saving features will just make your multiplier jump around and decrease performance.

Here is what i used to test efficiency. Small burts of superpi. 64k
and 128k
with C1E and EIST those scores were slower than without them. C1E and EIST didn't do anything to help anything.
When you guys get your ASUS boards you might have to use C1E and EIST, as that was a problem with their boards. There is a lot of false information out there, and well most of it is because certain boards have tons of BIOS issues. Wait a week or two until official release BIOSes are released, most companies will have taken care of those problems. Only board that they say keep it on are ASUS, MSI even says to disable.

This is from ASUS as well, on GIgabyte everyone I have seen can do at least 4.8ghz.

"Here is an excerpt from an ASUS overclocking guide provided to us about the percentage of processors that overclock to a certain frequency from a total of 100 Sandy Bridge processors:

Results are representative of 100 D2 CPUs that were binned and tested for stability under load; these results will most likely represent retail CPUs.

1. Approximately 50% of CPUs can go up to 4.4-4.5 GHz

2. Approximately 40% of CPUs can go up to 4.6-4.7 GHz

3. Approximately 10% of CPUs can go up to 4.8-5 GHz (50+ multipliers are about 2% of this group)

Additionally it is recommended to keep 「C1E」and「EIST」option enabled for the best overclock scaling. This is different than previous Intel overclocking expectations where the best scaling was with disabled power states or power management options.""

That is just ****ty, and its becuase #1 they didn't do Sandy Bridge correctly(no VRD 12 cert) #2 this bios is buggy and fromw hat i have heard from two independant reviewers, unstable.

you gotta wake up and realize ASUS isn't the only mobo company, and the reasono there is so much confusion is becuase their boards aren't stable.

Recently here are huge BIOS changes:
#1 auto set ratio to use turbo mode when above intel spec
#2 allow for you to disable C1E and EIST, before if you disabled these the BIOS woudl become very unstable and crash even at stock, and that is just no right.

Plus me nor other people used C1E or EIST, and we can all hit 5.2ghz, the other guy has a UD4 and D2 stepping chip, and his was limited at 4.8ghz, then CPu PLL Overvoltage option was added to BIOS and he coudl boot at 5.4ghz and was stbale at 5.1, we both tried with C1E and EIST and nothing good came of it, just jumpy multiplier whihc is a huge problem with C1E and EIST. most benchmarks like 3DMark and other GPu benches don't take you CPu to 100% and thus eist and C1E will keep the multiplier down.
Edited by Sin0822 - 1/9/11 at 1:00pm