No i7 OC guide?

[EliteRetard]

Just curious...if you do a mild/moderate OC (say to 3GHz on i7 920) can you keep the turbo modes? How would you test for stability if you did?

Im planning on building a new rig in the next few months when Win7 i5 and the new video cards are all out so I can get the best bang for the buck. I had some other questions I dont remeber now...

Hasnt i7 been out for a while? How come I dont see a guide yet

 

[Sekkai]

This has been my problem too. I don't know if you're supposed to leave things like C1E/speedstep/Turbo Performance Mode/Turbo +1 Mode on.

 

[OILFIELDTRASH]

Check this out. Turbo mode does stay on when you overclock providing your temps are low enough.
http://www.maximumpc.com/artic...ush_nehalem_its_limits

 

[Sacraster]

I did my 3.8 oc with turbo on

 

[Sekkai]

How low?

 

[Sekkai]

What about the Performance Enhancement mode? Standard versus Turbo versus Extreme? How about C1E?

 

[OILFIELDTRASH]

Originally posted by: Sekkai
How low?

I believe it was like the low 80's(c) turbo mode didn't work. Keep your max temps in high 70's and you'll be fine. That's max temps when running a program like prime95 with 8 threads going. Monitor your cpu temps with realtemp.

 

[OILFIELDTRASH]

Originally posted by: Sekkai
What about the Performance Enhancement mode? Standard versus Turbo versus Extreme? How about C1E?

I keep C1E on with my overclock. Its a little power savings and I haven't experienced any stability issues. I am running my core i7 920 @ 3.62ghz on stock voltage. I think those other features your speaking of could be unique to your motherboard. Give some screen shots of those features and I'm sure someone could help. Also show screen shots when you open that option in bios.

 

[Sekkai]

What are your idle/load temps under stock/clock?

I made a thread in the OC forum with all my bios screens, but unfortunately I haven't found the answers I've been after. What are your settings?

 

[Shmee]

I turned all power savings off. Turbo mode works fine for me, never throttles.

 

[ilkhan]

keep speedstep on, turn turbo off (200x20 is a nice round number, no need for more).

 

[Sekkai]

If I could get to 200x20, I wouldn't be worrying too much about Turbo

Unfortunately I do not know what voltages to tweak/values to change for the CPU/RAM/Uncore/whatever else/etc

 

[EliteRetard]

Originally posted by: Shmee
I turned all power savings off. Turbo mode works fine for me, never throttles.

Turbo works at 4.2GHz?! Or is that its max with turbo?

Im thinking since i5 has higher turbo modes you could actually get higher clocks with less effort and harm to your system since turbo is basically just a multiplier bump. i7 has what 2 steps and i5 has 4? So if its the same 133 base clock as the 920 and you bump it to say 150 you get 3GHz on both chips...but the i5 will run at 3.6GHz vs 3.3GHz on the 920 with its max turbo. The gap gets even bigger if you go higher. Like 175 gives 4.2GHz vs 3.85GHz. Or you can use a lower rate and voltage ect to get the same kind of clocks. And actually I think it will be higher clocked even with more threads active...

Though Id want more than 4GB and I dont which would OC better, 3x2GB or 4x2GB. Seems the more RAM sticks you have the worse off you get. But thats why Im waiting...see what the prices and benchies and such say. Oh and if Im building this kind of system it feels like I should get some GPU horsepower too...Im curious how limiting the X4 SLI/Crossfire will be with two cards vs the X16 on i7.

 

[Shmee]

Turbo works fine, it depends on the board I think. And what power saving stuff you have turned on. With turbo it makes 4.2 GHz, 21x200
but I have also tried 210x21, and turbo is still working, I just couldn't get it stable so I backed off.