Core i7/X58 Overclocking Thread

[Cooperdale]

Has this something to do with Vista System panel reporting wrong cpu speeds for high multipliers? In my case only some softwares (cpu-z, Real-Temp, TurboV, some Everest pages) report the right cpu frequency when I'm at 160x25. Most softwares report 3.84Ghz, as though the multi were 24. Turbo is off though, but I think the problem is with Vista reading the default cpu multi (24 for the 965EE) and multiplying it for the Bclk. This happens with any software I've tried except for the ones I've mentioned.

Cpu-z though reports 4Ghz as if it were a constant frequency, whereas Real-Temp reports many variations, with the multi covering all the range from 20 to 25.

[rge]

Cpu-z though reports 4Ghz as if it were a constant frequency, whereas Real-Temp reports many variations, with the multi covering all the range from 20 to 25.

With speedstep enabled, Realtemp will report varying multis depending on background activity of computer ie cores active vs not. CPUZ reports constant multi with speedstep enabled, ie does not seem to work correctly with speedstep enabled. If you disable C1E and EIST, then both Realtemp and CPUZ should report a stable multi.

[Hornet331]

With speedstep enabled, Realtemp will report varying multis depending on background activity of computer ie cores active vs not. CPUZ reports constant multi with speedstep enabled, ie does not seem to work correctly with speedstep enabled. If you disable C1E and EIST, then both Realtemp and CPUZ should report a stable multi.

for me cpu-z also reports varying multis, same as realtemp.

[rge]

for me cpu-z also reports varying multis, same as realtemp.

LOL...interesting, and you also have GB extreme? Crazy how everybody is seeing different things with different bioses, setups, OS, etc. Are you on vista? I just enabled speedstep and checked again, Realtemp fluctuates and reads lower multis, cpuz stays rock solid at bios setting 21 multi, but I am on XP...apparently something different between my setup and yours.

[Hornet331]

LOL...interesting, and you also have GB extreme? Crazy how everybody is seeing different things with different bioses, setups, OS, etc. Are you on vista? I just enabled speedstep and checked again, Realtemp fluctuates and reads lower multis, cpuz stays rock solid at bios setting 21 multi, but I am on XP...apparently something different between my setup and yours.

Yep im on vista 64 and using the Extreme.




in the second picture, igonre the 12x multi on realtemp. Realtemp shows the switches a lot faster then CPU-Z does.

Im on F4j and have enabled everything in advance cpu settings beside c5/6/7.

[unclewebb]

Cpu-z though reports 4Ghz as if it were a constant frequency, whereas Real-Temp reports many variations, with the multi covering all the range from 20 to 25.

One thing I mentioned to rge is that how Windows is set up also plays a part in your actual multiplier at idle. If you have C1E and Speedstep enabled in the bios, you will also need to have your Power Options set appropriately so your multi isn't jumping up and down at idle.

In XP set your Power Options like this to get the full effect of C1E and the lower power states:
The picture is of my Q6600 dropping from 9.0 to 6.0.



For Vista you need to reduce your Minimum Processor State:



If RealTemp is reporting that your multi is jumping up and down it's because it is jumping up and down. I decided to let RealTemp start telling it like it is and then users will at least know exactly what's going on and they can decide what needs to be adjusted in the bios or Windows or both.

Edit: Another thing that rge has noticed is some of the numbers displayed by CPU-Z simply don't add up. It seems to be using multipliers of 1/2, 1/4, 1/8 or even 1/16 internally in some of its calculations:



196.0 X 21 does not equal 4111.5.
It equals 4116.0 MHz

[freshy]

even when i was priming @ 4.2ghz with turbo on , HT on my temps just hit 90, and that was with these voltages and i did not see any throttling , but i have cpu thermal monitor disabled in bios (bios f4k) on ud5

ok voltages for 4.2ghz 8 hours 38 mins of prime
200 x 19 + turbo, HT on
cpu vcore 1.55v
qpi/vtt 1.535v
cpu pll 1.88v
qpipll 1.18v
ioh core 1.24v
ich i/o 1.58v
ich core 1.22v
vdimm 1.66v
qpi link was x36
and uncore was running at 3400mhz

screen shot was taken while @ 4.1ghz with turbo on HT on but i have it set the same for when i was priming at 4.2ghz, anyway i think im gonna flash to f4l now and give that a go

[nutcase]

This is my i7-920 presently on a P6T deluxe. presently running 2 260 Gtx 192 core Cards in SLI.

Cpu is water cooled with swiftech GTZ WB