I7 920 Overclock On Water

d8ncer · 3 Dec 2008 at 20:48

Have my i7 at 3.8 on my new Asus P6T.

I have a triple rad water cooling setup with EK Waterblock.

This setup kept my E8400 overclocked to 4.3gig at 36 degC.

It is struggling to keep my 920 at 55-60 degC idle.

Is this normal for this type of chip.

fornowagain · 3 Dec 2008 at 21:03

http://www.xtremesystems.org/forums/showthread.php?t=209524

flopper said:
4ghz
1.344vcore load.
37c idle.
60-65c load.
ek supreme.
tripple rad black gt 360
innovatek passiv.
one gpu block in loop

They do run very hot, yours seems high for idle though. Whats the ambient? Is that an EK Supreme, what backplate are you using?

roller · 3 Dec 2008 at 22:55

seems a bit hot try reseating your block i am using an XSPC the best block and the cheapest im running at 4.150 with 1.360v idle temp 34/35
load 65 i dont run prime for very long only couple of passes as these chips do run hat

d8ncer · 4 Dec 2008 at 15:30

Thanks for help guys, however I done something really silly when i put my new block on.

Have a guess.

Schnippzle · 4 Dec 2008 at 16:35

Didnt screw it down? Put it on back to front? Didnt connect it to the loop?

E.D.I.T.: My colleague has just asked me to ask if there were any teddy bears stuck between the block and the cpu?

d8ncer · 4 Dec 2008 at 18:28

He Haw,

Forgot to take the sticker of the block base.

Happy · 4 Dec 2008 at 18:30

Classic, **remembers to check that when building my setup**

Bradley8988 · 4 Dec 2008 at 20:07

lol I did the same with my first build.

1kiwi · 5 Dec 2008 at 10:10

fornowagain said:
http://www.xtremesystems.org/forums/showthread.php?t=209524

They do run very hot, yours seems high for idle though. Whats the ambient? Is that an EK Supreme, what backplate are you using?

Seems the trick is to turn HT off. Saves you 10C and provides higher FPS in games.

d8ncer · 5 Dec 2008 at 11:11

Just tried the what you mention and there is a diffrence.

4gig Overclock

Voltage 1.45v / Hyperthreading On
Idle - 52,52,52,50
Load - 76,61,61,57

Voltage 1.45v / Hyperthreading Off
Idle - 50,50,50,49
Load - 67,67,56,55

Runs all test stable with hyperthreading off but crashes in a few seconds with it on at 4gig clock.

Noticed that with hyperthreading on I have one odd core that is nearly 20oC above the rest.

Wonder if it is worth getting the lapping kit out.

d8ncer · 5 Dec 2008 at 11:48

Settings so far. Please note that there is probably things I should be doing with bios but not sure.

Asus P6T overclocked to 4.0Ghz

All bios setttings at auto except the following.

AI Overclock Tuner - X.M.P
CPU Ratio Setting - 20
BCLK Freq - 200
Dram Freq - 1603
CPU Voltage - 1.475
QPI/Dram Voltage - 1.475
Memory Volatge - 1.66

Hyperthreading - Off

Dont matter what you do or change cant get over 4 Ghz.

1kiwi · 5 Dec 2008 at 11:57

You may need to play with your NB, SB, VTT, GTL and PLL settings to get it stable. I don't have an i7 setup so can't advise but i'm sure if your asked some of the nutters over at Xtremesystems they will help you out

d8ncer · 5 Dec 2008 at 13:22

Have just lapped my chip. It had an almighty high spot at one corner and the reason why my temps were a bit wild.

After lapping

Idle - 45,45,45,43
Load - 60,60,50,50

Need to lap water block as well and hope that will bring it down a couple more degrees.