Q6600 @ 3.2Ghz 1.312v Versus E6750 @ 3.6Ghz 1.46v

[ArchAngel777]

I decided to test my friends E6750 because he wasn't sure if his motherboard was bad or if the chip was bad. Being that I just built my new C2Q rig and am having heat problems, I welcomed the idea as it would help me diagnose if I am simply doing something wrong, or if my Q6600 simple runs to damn hot.

Both tests were done in 23c room temperature, ran P95 mixed mode and temperatures were taken at 10 minutes into the test.

Q6600 @ 3.2Ghz (400x8 1.312v) Hottest CPU Core = 80c, PWM = 77c PIC

E6750 @ 3.6Ghz (450x8 1.46vv) Hottest CPU Core = 56c, PWM = 54c PIC

Tested with Tuniq Tower 120 - Fan on high. 4 Antec case fans on high.

So, the question is, does my Q6600 run abnormally hot? From the looks of it and doing the math, the answer would be 'No'. However, with people posting reports of 55c load temps on air, I really have to question that validity of those claims. Not because it isn't possible, but it just seems to me that if someone can run their Q6600 @ 3.2Ghz at 55c load, then it would stand to reason you can run your E6750 @ 30c load... Now, I never heard of that... In AT's test of their heat sinks they don't even test full load like Orthos/P95, they run like FarCry looped or something and their numbers are far from 30c on 'load'. So, I dunno guys, what do you think? Are people exaggerating their idle and load times? Or are people misreporting them innocently? Before I update the BIOS on my motherboard, the temps were 15c lower accross the board (they were reporting Tcase, or some BS like that) and truly thought my Q6600 was running great... I flashed BIOS and noticed that SOB was running far hotter than I thought. So, I wonder if a lot of people just think their temps are lower than they are.

Also, what is the wattage these things output? All things being equal (3.2, same voltage) I would expect a quad to have double the heat. However, the C2D runs higher voltage and clock speed, which increases its thermal output. It seems to be in the scenario I tested above that the E6750 = 125ish watts or so heat, and the Q6600 = 175ish watts... Just a guestimate!

Edit ** I am considering one of those things if my temps are still too high when I receive my new Thermalright SI-128 SE. I am either going to RMA my chip for a replacement, or I am going to lap it. I almost lapped it tonight, but I figured I better not rush something like that. I don't want to regret it. Hell, I am almost tempted to buy my friends E6750 and just ditch this Q6600. Runs too damn hot and before Aigo comes in and says I told ya so! I just gotta say, yeah, you were right... Water cooling does not look so bad afterall 😀

 

[frythecpuofbender]

All I know is that there is a great difference between Orthos on all 4 cores and just running some current high end game + other stuff. I get 50°C on Load with Orthos whilst temperatures even for games like Vegas, Airborne or Bioshock never went over 40°C on load with my Watercooling setup. 3,2 Ghz+ with 55°C on air (Orthos load) I'd consider someone either very lucky or living in Antartica.
Even Maya with 4 render threads and virtually 100% use all the time doesn't heat up my cpu as much as Orthos.
And everything depends very much on room temperature and how much my 8800GTS heats up. Sometimes the Q6600 idles at 27°C, and after some gaming/rendering it's sometimes at 33°C!

 

[Markfw]

For a B3 revision Q6600, 77c is fine, thats what they run. I have two that do.

 

[Hulk]

Also keep in mind that as the difference from ambient to the heat sink fins increase the heat transfer increase but this is not a linear relationship. So you just can't "project" a 25 degree temperature differential to a different processor when the environmental temperature remains the same. That 25 degree difference might be 10 or 15 degrees, which of course is more realistic.

 

[F1shF4t]

The q6600 in sig gets to about 77-80C running 4 instances of prime 95 for a couple of hours. Under heavy games it rarely goes above 60C.
Idles at about 45C (well 2 cores at 45 and 2 at 40)
First throught it was a problem with my setup, but i couldn't get any better temps during the numerous times i remounted the hsf. I'm using the sonic tower and sure its not the best of coolers, but i have mounted 2 fans on it (one on side and middle) and the air is blown directly out of the case via the exaust fan (all 3 are 120mm fans @1200rpm)

this is with ambient temps of roughly 20-25C, have got no idea how some people are getting 60C at full load on air while running higher voltages and clock speeds, just doesnt seem right, unless they live in a fridge or something.

 

[jmmtn4aj]

x2 with the ambient temp/lie thing. My G0 runs at 66/68/69/70c load while folding using the stock cooler at stock voltage. My ambient temp is around 25deg, least that's what it says on the aircon remote (aircon recently serviced). Thing is there's 0 different most of the time even when I switch the fans to high (it's normally at medium or low), save when I play games because then the graphics card increases the case temperature by a bit.