Hi
I just bought a e6750 and Asus P5B motherboard. It runs all right but after checking temps and voltages using cpu-z and asus probe I'm a little bit concerned with what I saw. Idle temp is 44C and core voltage is 1.4V. from what I could find it seems way too much. core voltage in BIOS is set to auto. so what is standard core voltage for this chip?

Right off NewEgg's site, off the spec's tab:

Voltage 0.962V-1.350V

let me correct my question: what voltage should it run on without overclocking? and why when set to auto my BIOS sets it to 1.4V?

Well... for one, not all MB have the same type of settings.

I'm using an E4400 on a MSI P6N platinum. My voltage setting for example is:

0.0000

There is no auto setting (I can only increase, and cannot undervolt). Although my health monitor does show 1.320v for vcore.

I can only assume, when set to auto, it over compensates. What are your choice settings besides auto? Have you tried using CPU-Z to view your vcore within Windows?

in BIOS everything set to AUTO except memory voltage (this motherboard undervolts higher spec memory). cpu-z shows. 1.416V. I'm asking because my temp seems a bit high for idle (around 45C) even with stock cooler.

1.416v is fine. Up to 1.5v is within design sprecs.

See - http://processorfinder.intel.com/d [...] Spec=SLA9V

Note: As mentioned above, turning off AutoVoltage may let you lower the voltage significantly. The BIOS just guesses what is needed and usually sets it far higher than necessary.

I have a Q6600 stock Vcore is 1.3. I OCed from 2.4G to 3G. It ran too hot so I lowered the Vcore to 1.275 and dropped 11C, stressed with prime 95.

Whelp.. something is wrong. Did you disable speed step? With it disabled, that would be one reason why the vcore is above normal, and would cause your CPU to run at its stock speed at a constant, which speed step also reduces the multiplier that cuts down heat and power consumption.

If you never put a 775 socket together, heres a video you could watch, just to be sure you have the HSF on correctly:

Intel CPU Install

And here's a pick of what you should see on the underside of the MB with the stock HS on:

Just showing that since most people that found that their heat problems were associated to the 4 pin installation.

Edit:

Wooo... lots of replies while I was replying..

thanks for replies

I have speed step enabled in BIOS but it's still running at max speed. do I need to install some driver for windows like for AMD chips?

and I had some problems with installing heatsink but I figured out what it should look like and it's installed correctly.

after manually lowering Vcore to 1.3V (it actually shows 1.27) the temp is now 37C which is a lot better than 45C.

No, there isn't really anything specific to install for speed step to operate.

In the bios, look for C1E and EIST options. They both should be enabled.

On a side note, or for example, C1E is hidden on my Bios. So I have to hit F4 on a particular menu for it to show up, in order to enable or disable it.

So not all MB bios will be the same.

zen master learned that from me! you amd guy!

ok all chips are the same (multipler and bus only difference (cache too we ignor that for now))- basically! Yes, sure intel sorts some but for the most part there is not much difference between an e660o or ee6850 or x6800 or even a q6600 (there is alot different here but less then you think)

there are major differnce between the b3 and g0 both qaud and dual

important fact 1: all intel c2d chips like to run 3-3.4ghz - new or old, dual or quad - this is the "sweet spot" this is where u should run your cpu

the higher the fsb and the higher the speed the more voltage you need - i.e. an e6300 will need more voltage at 3ghz then an e6600

#2 as a rule a lower end chip will need slight more volgate at any given speed then a high end chip - after all you paid thriple the price for qx6850 vs the q6600 g0 but they run the same speed!

#3a --- at 3.2-3.4ghz you will need 1.41-1.42 with dual core chips you may be able to use much less. with older chips 1.42 under load works well

#3b at 3.6ghz you need 1.45ghz up to 1.47 - with new g0 quad q6600 you need exactly 1.45v to run 3.61ghz stable as shown below. (note: why do this? unreal responsiveness this set up is so snappy it make an amd fan bpy convert)

#4 if you have a very compact system and you want low heat and if your going to fun below 3ghz you can go much lower 1.24-1.28v. 1.32v will give a nice range for many cpu's and speeds.



ok sure what bunch of bs this is - i just make this crap up - true! but its pretty good stuff. here is the bottom line it works and i have shipped computers with all these settings and cpus.

as the temp of older c2d chips reachs 55c you need more voltage - the new chips are much more toleranter of less voltage. at 65c the older c2d become very unstablye -HERE IS WHERE IS GETS INTERESTING the new chips sill run below that temperature.

you can run your cpu to 65c - quad core 3.6ghz q6600 systems run 40-45c in reguale use and 62-67c with 100% useage over days!



this is an q6600 running 3.6ghz for over 2 days