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Help with voltages on an E6600

LeJimster

LeJimster

LeJimster

Associate
Joined
8 Jan 2003
Posts
421
Location
Sheffield, UK
Hi Guys,

I've been trying to fix my friends PC that I built him last summer and I thought I'd try pushing the overclock a bit further as I left everything on stock volts when I built it.

I got his E6600 to 2.8Ghz on 1.35 and it works fine there.

The weird thing is that CPU-Z says the voltage is lower than what I'm setting in the bios, so which should I believe?

I've currently got it sat @ 3.4Ghz on 1.425 volts in the bios and CPU-Z is saying 1.392.

I've read that for longevity you shouldn't push past 1.45 on air.

The motherboard is a Gigabyte P965-DS3.
 
It's probably just V-droop or V-drop... which ever one it is!

The mobo isn't giving the chip exactly what you set it at.

I have an E6600 and in my Asus P5K the V-Core is set at around 1.5V in the BIOS but in windows under load it is at 1.41V.

With the E6600 I think it comes down to temps more than volts.. or that's what I read. I think a MAX constant temp of 70C in Orthos is what I went by because when running S@H or games it never puts as much strain on the CPU and never goes above 65C even when my room is very hot.

Basicly I'm happy setting mine at 1.5V volts in BIOS and having the CPU run 24/7 because the temps are under control, you should be to. ;)
 
Dougie...

Can you give me more details on what your running your CPU at? and how long you've had it.

I've just bumped the voltage up again in the bios to 1.43 because everytime i try to run SP2004 the PC would lock up. I'd like to get it to 3.6Ghz, but I don't want the temps to go over 60 degrees load. I'm trying to balance the longevity with stability and performance. I think I might push further if it was my own PC. But it's not :).

CPU-Z is now saying 1.408v
 
Well, I'm using gigabyte's easytune to check and change voltages. I've got a feeling it is vdroop as someone else mentioned.

Current setup is CPU @ 3.4GHz - voltage set to 1.45, actual voltage is 1.42 idle and it fluctuates between 1.41v and 1.39v @ full load. Temps idle are 27-32'C and full load 48-52'C.

I might push it to 3.6GHz but no further.
 
Cpu-Z has always been bang on for me.

I got me cpu set at 1.5v in bios, the bios reading says its an actual voltage of 1.48v and so does Cpu-Z.

What you "set" isn't what you actually get, a lot of boards have a setting that eliminates vdroop to a large extent.
 
Thanks for the help guys.

I finally settled at 3.4Ghz with the settings I posted last.. I tried pushing to 3.5Ghz. but the voltage steps were getting larger to get it anywhere near stable at that speed, so I left it at this "cool" voltage. Seems fast enough :-).
 
Mine is exactly the same. Needs stupid amounts of volts to get any further than 3.4. Could also be the mobo since i had to drop the multi (Chip runs at 1700FSB) to get the thing past 2.8
 
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