Core i7/X58 Overclocking Thread

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01-13-2009, 04:57 AM
Khalmyr

So I finally tested my setup yesterday

i7 920 + Asus P6T non Deluxe

I can prime @ 3.8Ghz with 1.29v but I can't seem to prime 4Ghz even at 1.4v

I know I have an A chip, I'll check the batch once I get home.
01-13-2009, 06:39 AM
Lukee

Quote:

Originally Posted by Khalmyr

So I finally tested my setup yesterday

i7 920 + Asus P6T non Deluxe

I can prime @ 3.8Ghz with 1.29v but I can't seem to prime 4Ghz even at 1.4v

I know I have an A chip, I'll check the batch once I get home.

Are you using 200 x 20x
36x QPI
16x uncore
8x memory?

If you are, just change the following and give it a try...

15x Uncore
6x memory
01-13-2009, 06:42 AM
JWMc

Quote:

Originally Posted by Khalmyr

So I finally tested my setup yesterday

i7 920 + Asus P6T non Deluxe

I can prime @ 3.8Ghz with 1.29v but I can't seem to prime 4Ghz even at 1.4v

I know I have an A chip, I'll check the batch once I get home.

Add QPI voltage until it's stable at 4ghz. Prime blend needs it.
01-13-2009, 07:48 AM
GenTarkin

Quote:

Originally Posted by derektm

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

3836B043
Thats the same batch I have sitting here. Waiting for the motherboard and then will be able to put it all together. At first, I will only be cooling on stock cooler. But, will post up my results regardless.
01-13-2009, 07:51 AM
The-Fox

There is one seller at eBay selling this batch, I am dying to know how it performs.
According to my speculations it should be a cherry pie :D

Please let us know GenTarkin/derektm.
01-13-2009, 08:18 AM
Lukee

Quote:

Originally Posted by The-Fox

There is one seller at eBay selling this batch, I am dying to know how it performs.
According to my speculations it should be a cherry pie :D

Please let us know GenTarkin/derektm.

Which seller?
01-13-2009, 08:33 AM
Avan

Is there any reason I shouldn't grab one of these off ebay? It's nice to know the batch number you're getting instead of playing the lottery with alot of the online retailers.
01-13-2009, 08:43 AM
Khalmyr

Quote:

Originally Posted by Lukee

Are you using 200 x 20x
36x QPI
16x uncore
8x memory?

If you are, just change the following and give it a try...

15x Uncore
6x memory

I'm running 191 x 21

I don't know about the multis because I only get values. I'm using the lowest for each one of those...

Quote:

Originally Posted by JWMc

Add QPI voltage until it's stable at 4ghz. Prime blend needs it.

How much do you think is enough? Is 1.4 too much? Should I try 1.5v+?
01-13-2009, 08:44 AM
Brahmzy

FYI. I grabbed my i7 920 off of that $269 shipped Amazon deal and it's an "A". Still waiting on my mobo n mem to get here, so I don't know if it's a good or bad one. I'm determined to hit 4GHz 24/7, so I may end up having to try n find a "B".
01-13-2009, 08:47 AM
JWMc

Quote:

Originally Posted by Khalmyr

How much do you think is enough? Is 1.4 too much? Should I try 1.5v+?

Do it slowly, the value required is highly dependent on the sum total of your settings. The highest I've gone is 1.375v which was required for Prime blend stability at 20x200, 3600mhz QPI, 3200mhz Uncore, 1600mhz memory @ 8-8-8-21-1T, HT enabled, turbo disabled. The highest recommended by Intel is 1.35v.
01-13-2009, 08:49 AM
JWMc

Quote:

Originally Posted by Khalmyr

How much do you think is enough? Is 1.4 too much? Should I try 1.5v+?

Do it slowly, the value required is highly dependent on the sum total of your settings. The highest I've gone is 1.375v which was required for Prime blend stability at 20x200, HT enabled, turbo disabled. The highest value recommended by Intel is 1.35v.
01-13-2009, 08:50 AM
Khalmyr

Mine is already at 1.4v :P
01-13-2009, 08:55 AM
roller11

Quote:

Originally Posted by Brahmzy

FYI. I grabbed my i7 920 off of that $269 shipped Amazon deal and it's an "A". Still waiting on my mobo n mem to get here, so I don't know if it's a good or bad one. I'm determined to hit 4GHz 24/7, so I may end up having to try n find a "B".

Which Vendor?
01-13-2009, 09:06 AM
Lukee

Quote:

Originally Posted by Khalmyr

I'm running 191 x 21

I don't know about the multis because I only get values. I'm using the lowest for each one of those...

How much do you think is enough? Is 1.4 too much? Should I try 1.5v+?

if the bump in qpi/vtt doesn't do it, try my recommendation.
01-13-2009, 09:59 AM
Lu(ky

Quote:

Originally Posted by Brahmzy

FYI. I grabbed my i7 920 off of that $269 shipped Amazon deal and it's an "A". Still waiting on my mobo n mem to get here, so I don't know if it's a good or bad one. I'm determined to hit 4GHz 24/7, so I may end up having to try n find a "B".

If you are near a Microcenter they have B's and only at $229.99 in store only. Going to pick up another one on Wed. :woot:
01-13-2009, 10:14 AM
MikersSU

Quote:

Originally Posted by JWMc

Do it slowly, the value required is highly dependent on the sum total of your settings. The highest I've gone is 1.375v which was required for Prime blend stability at 20x200, HT enabled, turbo disabled. The highest value recommended by Intel is 1.35v.

If you go a bunch of pages back, someone posted the limits from intel. The limit to vcore is 1.55. VTT limit is 1.35.
01-13-2009, 10:19 AM
Splave

IMO these chips require a harmony of voltages not just jacking 1 or 2 of them through the roof.
Try playing around with the qpi pll and other voltages a bit. Sometimes a bump on one of those helps.
01-13-2009, 11:34 AM
Lukee

Quote:

Originally Posted by Lu(ky

If you are near a Microcenter they have B's and only at $229.99 in store only. Going to pick up another one on Wed. :woot:

None near me :( I'd pay someone $270 + shipping if they were to have a spare one.
01-13-2009, 11:37 AM
RealTelstar

When is expected the next price cut (on the 940 especially)?
01-13-2009, 11:44 AM
The-Fox

Quote:

Originally Posted by Lukee

Which seller?

You might want to check this one then: its an i920 3836B043.
01-13-2009, 11:48 AM
Lukee

Quote:

Originally Posted by The-Fox

You might want to check this one then: its an i920 3836B043.

Thank you. A bit high with the $20 shipping.
01-13-2009, 11:49 AM
Lu(ky

Quote:

Originally Posted by Lukee

Thank you. A bit high with the $20 shipping.

PMed you :yepp:
01-13-2009, 11:55 AM
Lukee

Quote:

Originally Posted by Lu(ky

PMed you :yepp:

Got it
01-13-2009, 12:07 PM
Hot'n'Chilly

Quote:

Originally Posted by Bobbylite

IMO these chips require a harmony of voltages not just jacking 1 or 2 of them through the roof.
Try playing around with the qpi pll and other voltages a bit. Sometimes a bump on one of those helps.

My opinion as well, which is why I am still trying to collect detailed data for a study.

I still need those of you hitting 4.0ghz on relatively low voltages to please post in your full settings and voltages. I promise, no aminals will be harmed in my research, and the results will be posted for all to benefit from. ;)
01-13-2009, 12:17 PM
Splave

will post my 4ghz HT 1.375vcore settings when I get home :)

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