Core i7/X58 Overclocking Thread

[liftedcj7on44s]

well i got this board from a member (MIAHALLEN) here on XS that had a i7 965 to 5.4ghz on LN2 and i got a good deal on it.
I have not contacted MSI yet. I am talking to MIAHALLEN right now about what it should be default.

[MikersSU]

Whew. I went through some crap to get my system running closeto what I want.

I'm convinced that the B stock runs better with lower voltages than the A's. I have two 920's sitting here and the first one I attempted to overclock actually needed 1.4vcore in BIOS to be stable in Vista. The batch number is 3838A647. The processor I'm currently running and Priming NOW is 3837B217 and it's running with 1.35vcore in BIOS and 1.36 under load.

Oh, and the A processor did not like the 20 multi at all.

I'm trying to get this processor to the 4.0 mark with the lowest voltages possible and I think I'll be successful.

On a side note, I had a 3839Axxx up until yesterday (before I exchanged it) and it did not oc well at all. Anyway, I'll continue testing - let the saga continue!

[16floz470ml]

This is the best that I can do on air with it in a case. I am very impressed with these cpus.

[Chicken Patty]

^^ man thats an awesome chip, is it a "b" batch chip?

[16floz470ml]

^^ man thats an awesome chip, is it a "b" batch chip?

I don't know. Is there a way for me to tell without taking the cooler off?

[Chicken Patty]

I don't know. Is there a way for me to tell without taking the cooler off?

its on the box. white label, says EPO/Batch #

[16floz470ml]

its on the box. white label, says EPO/Batch #

EPO/Batch # 3841A383 Made in Costa Rica. My ups shows 450 watts loaded with prime95. Surges up to 485 watts when running apps or surfing the web with prime95. It still seems fast even loaded up.

[tot31]

EPO/Batch # 3841A383 Made in Costa Rica

Same week and batch as mine... don't need too much juice....

[16floz470ml]

Yeah I guess we lucked up.

[YukonTrooper]

Nice chips guys. Looks like i7 920's that can reach 4.0GHz ≤ 1.2V are considered excellent chips.

[16floz470ml]

What makes all the difference for me is enabling current override. When doing so I am able to use a much lower voltage. Under load voltage goes up instead of down like on my 790i ultra and every other board I have ever had.

[revenant]

Kyle say's it's 1.22v on the latest bios if you wanna believe him
[snip]

I think that's right actually.. in the bios for the eclipse it says the default qpi will be anywhere from 1.0something to 1.22 dep on the cpu... I was betting on it being very close to if not on that upper value... anyways.. my eclipse has other issues so I am jumping to an ex58-ud5.

[tot31]

What makes all the difference for me is enabling current override. When doing so I am able to use a much lower voltage. Under load voltage goes up instead of down like on my 790i ultra and every other board I have ever had.

I think you're right, I enable it on my Asus P6T vanilla too then I can lower down my voltage.

[JWMc]

EPO/Batch # 3841A383 Made in Costa Rica. My ups shows 450 watts loaded with prime95. Surges up to 485 watts when running apps or surfing the web with prime95. It still seems fast even loaded up.

Nice man, I have 3841A383 also. 1.184v load @ (19x200) 3.8ghz with HT enabled. 1.248v load @ (20x200) 4.0ghz with HT disabled. Turbo is disabled and I'm using 3600mhz QPI with 3200mhz Uncore and 1600mhz memory @ 8-8-8-21-1T.

[Hot'n'Chilly]

Nice chips guys. Looks like i7 920's that can reach 4.0GHz ≤ 1.2V are considered excellent chips.

I'm not even sure how its possible one can reach 4.0ghz with less than 1.4v. Mine doesn't seem to be able to... maybe it is the preportions of your other clocks and voltages.

Could those of you with 920's hitting 4.0ghz with relatively low voltages please post up your exact settings and voltages as well as what board and RAM you are using. I am going to make a study of this.

[CodeRush]

I'm using i7 920 @ 4050 Mhz, Vcore 1.3875v BIOS / 1.360v idle / 1.344v load, Vqpi 1.475v HT off 24/7.
It works with HT on, but temps are too high for my handmade watercooling system.
Settings:

[derektm]

3836A394 is horrible. Takes more than 1.45v for 4GHz to even boot. I have a 3836B043 on the way. I will post results!

[lowdog]

I think you're right, I enable it on my Asus P6T vanilla too then I can lower down my voltage.

Hang on, the current overide option isn't even in the bios for the P6T. There is a whole thread here talking about it's absence so what setting are you refering to?

[tot31]

Here's my latest OC, running 3.8Ghz @ 1.144V.....

[lowdog]

Here's my latest OC, running 3.8Ghz @ 1.144V.....

How about showing us your bios settings and what the setting is that you believe is the "current overide" option please.

[tot31]

How about showing us your bios settings and what the setting is that you believe is the "current overide" option please.

IIRC when I read an article on anandtech's website, he mentioned that current override for Asus X58 boards is called CPU TM Function under Advanced Menu -> CPU Configuration. I just disable that feature.

[loonym]

The cpu tm has to do with throttling and is not related to current override.

[tot31]

The cpu tm has to do with throttling and is not related to current override.

I know that but what I read from the article, saying that to enable current override in Asus boards, the CPU TM Function must be disabled. I forgot to bookmark the link, otherwise I can share it with you.

edit : ok found the link...here it is http://www.anandtech.com/cpuchipsets...spx?i=3453&p=2

[The-Fox]

So Enable TM = Enable Current Overide = no limit ?
Because I got this one disabled by default.

[Hornet331]

What still riddels me about Ci7 is the high default voltage.

My default voltage was somewhere around 1,23V at load and now im on a 920@3,6GHz with 1,21V @ load.