Core i7/X58 Overclocking Thread

[bmilos]

I will give that a try. Thanks. I just have a gut feeling that these sticks are what is holding my 965 back...

[003]

Technically, the maximum DRAM speed for a stable system is equal to (Max. Uncore) / (Safe QPI:Uncore Ratio) or 4.0GHz / 9:8 = 1.777GHz.

I am having a problem with this. You are saying that 4 / (9/8) = 1.777. But that is wrong. It would have to be 2 / (9/8) for the resulting quotient of 1.777. 4 / (9/8) is 3.555.

Am I just missing something here or is there an error in your math? Either way please let me know because I am very confused.

[revenant]

my 920 is a batch 3837a714 that any good? I am waiting for my psu before I can power the new machine on.

finally got my system together.. whew.. man after the bios flash my board hung at cpu ini and I thought omg... then a cold boot brought it back... WHEW... my cpu is rev c0/c1 just confirmed.. I'll start some ocing tomorrow night..

[dmenscornell]

got my system up and running on friday



i know this part can go a lot higher even on air cooling (i am using a Noctua NH-U12P SE1366) but 4ghz is plenty for me. parts from this batch have hit 5ghz on air at 1.48V. my room is getting warm as i type this lol.

also im not done lowering the voltage yet. at 1V this part rates 3.6ghz, having internal data helps.

so i figure 4ghz with safety + droop is 1.1V or so. ill have more time this weekend to tweak it.

[X.T.R.E.M.E_ICE]

got my system up and running on friday

i know this part can go a lot higher even on air cooling (i am using a Noctua NH-U12P SE1366) but 4ghz is plenty for me. parts from this batch have hit 5ghz on air at 1.48V. my room is getting warm as i type this lol.

also im not done lowering the voltage yet. at 1V this part rates 3.6ghz, having internal data helps.

so i figure 4ghz with safety + droop is 1.1V or so. ill have more time this weekend to tweak it.

Sweet cherry picked CPU.

[003]

Sweet cherry picked CPU.

Eh , it's not that good TBH. Mine 920 is better.

[dmenscornell]

Eh , it's not that good TBH. Mine 920 is better.

heh what vcc do you need for 4ghz? the part i have rates off the chart on the IDV measurement.

[kompulsive]

What is all this talk about the Intel INF utility? Should we be checking it out or what?

[Cooperdale]

what are you going to pick up to replace it? I was thinking about possibly doing the same...

Also, I am having memory issues. Anyone else have A 6gb kit of XMS3 1600? I have a hard time running it even at 1600.

I'm using OCZ 6Gb kit @ 1600 8-8-8-24 1T with QPI 1.35 and Dram 1.64.

[kompulsive]

I'm using OCZ 6Gb kit @ 1600 8-8-8-24 1T with QPI 1.35 and Dram 1.64.

Same here.

Same RAM high-five!

[Cooperdale]

Same here.

Same RAM high-five!

Hehe, high-five man. It's good RAM, for the first time in years I tried something other than Corsair and it's better than I thought.

[chuckbam]

This is one of the benchmark results in the CPU3D.com review of the P6T running at 4GHz.




This is me with a cheap DDR3 Ver. of an HD 3870








.

[Bootsy]

My 24/7 so far ,temps are good and needs less volts than 21 x 200. Still working on that with lower volts. These Gskill PI blacks are sweet.

[Cooperdale]

About my previous message, I can confirm I had not disabled C1E in bios. When I do, both Cpu-z and RealTemp show fixed frequency. When I don't, only Cpu-z shows (wrongly) fixed frequency.

[fornowagain]

I am having a problem with this. You are saying that 4 / (9/8) = 1.777. But that is wrong. It would have to be 2 / (9/8) for the resulting quotient of 1.777. 4 / (9/8) is 3.555.

Am I just missing something here or is there an error in your math? Either way please let me know because I am very confused.

You got the maths right, 3555Mhz for uncore. Remember the ram runs at the same BCLK, but with half the multiplier, so 1777Mhz.

[rge]

My 24/7 so far ,temps are good and needs less volts than 21 x 200. Still working on that with lower volts. These Gskill PI blacks are sweet.

Interesting, and sweet RAM speed. Are those rated 1800 8,8,8 or just OCed? Edit...just saw they are 1600, very impressive for running 12Gb ram Glad to see that, I was starting to think when I upgrade to windows 7 + more than my 3gb ram, my OC was going to get hosed...but maybe not. How much DRAM volts and QPI/Vtt are u using?

I am using 21x200 now for 24/7, need to check 183x23. I thought at 4.1 I needed about same or maybe 1 less notch with 21 multi, have not checked 183x23 yet...though mine may be different. But definitely both way better than using 22 multi.

[Lukee]

Same here.

Same RAM high-five!

Same as well.

[Splave]

so as far as I can tell, i965 and i940 are pretty much a waste of $$

EDIT: For air and water atleast

[Xello]

so as far as I can tell, i965 and i940 are pretty much a waste of $$

EDIT: For air and water atleast

Doesn't the 920 top out @ 20x multi? I doubt i could get my 23x perma-turbo multi on a 920

Anyone else getting really random vdroop? Setting 1.44v in bios gives me 1.424v in cpu-z under load, setting 1.46v in bios gives the same. Setting 1.475v in bios gives 1.456v real @ idle, 1.44v under load. Still that means i've nailed 185x23 =4.25ghz 10hr prime stable with 1.44v, which is not bad i guess. Now going for 4.3ghz with 23x187.

[revenant]

Ci7 is the first chip that makes me think about getting a water cooling setup.

Cause i think 4.2ghz is possible with my chip with reasonable temps, but aircooling dont cuts it.

Coolit Freezone Elite. nice self contained unit, don't need to worry about ambient temps bringing your base temp up.. I dunno, some people don't like them but I think it would be a good compliment to this hot quad.

[kompulsive]

Does anyone know why running four instances of Orthos is only putting my loads at 100%, 100%, 50%, and 50%?

[sonofander]

so as far as I can tell, i965 and i940 are pretty much a waste of $$

EDIT: For air and water atleast

I concur...

I went and returned my 965 and exchanged it for a 920.
My max stable oc on the 965 was 4.3 and guess what my max stable oc on the 920 is... Give up?

4.3

Guess for me the 965 was just a waste of money since I can do the exact same thing with my 920. With the exact same volts by the way.
All I know is 4.3 for $320 is WAY better than 4.3 for $1150. Seriously

And my ram, qpi and uncore speeds are almost identical to what they were on my 965 4.3 overclock.
So lost 200 pts on everest read, write and copy but I put $700 back in my pocket...
no brainer, huh?

Anyway, it's funny how context is so important. I was really dissapointed in a 4.3 clock on the 965 but I'm thrilled with the same clock on the 920

[Lukee]

Coolit Freezone Elite. nice self contained unit, don't need to worry about ambient temps bringing your base temp up.. I dunno, some people don't like them but I think it would be a good compliment to this hot quad.

What kind of temps can you get with this?

[freshy]

lol sonofander , 4.3 , ht on ? turbo on ?

[Xello]

Does anyone know why running four instances of Orthos is only putting my loads at 100%, 100%, 50%, and 50%?

Use Prime, man!