Bought this rig, but having E8400 temp problems

I went over my budget and e got a 4870 instead of the planned 4850! Now this rig has:

E8400

ASUS P5Q-E

Gigabyte HD4870

2x1 GB DDR2-800

750W PSU

I already have an E8400 in another rig (Gigabyte P35-DS3R, 8800GT, 2x1 GB DDR2-800)

I noticed that the CPU temp was much higher than the temp I got for the other system (P35). The P45 system idles at 50 degrees for the CPU, up to 80 degrees when running Prime95. Compare this to the P35 system which idles at 40 and max at 65.

I use CPUID, Real temp and the BIOS for reading the temperatures. In the P45 system, there is a 20 degrees difference between the two cores at idle on Real temp.

I know that the 4870 is a room heater, but I did the fan speed hack and it now idles at 50 instead of 80!

Any help?

Thanks.

I might add that I am pretty sure that the stock cooler (I use the stock cooler in both systems) is very well attached to processor, and that there is a layer of thermal paste (the one that came with the processor) in between.

Bottomline, why isn't the E8400 in the P45 board acting like the one in the P35 one?

perhaps try flashing the mobo bios to a more recent one

I flashed the BIOS to the latest available version.

The Real temp test shows Core 0 at 9 and Core 1 at 11, the values change with subsequent tests.

I must add something. On the P45 system, the heatsink of the CPU doesn't feel like 70 degrees. I am pretty sure that I attached the heatsink correctly.

Are you reading the TMPIN0 for the 50c and 80c? Or is that 50c on Core 0 and Core 1 in coretemp?

If that is TMPIN0 then that is your system temp, not your NB or anything else. Bad airflow can cause that if you got hot pockets of air that isnt being pushed out and just hovers there.

TMPIN1 if the reading off the die and is the CPU. Not the individual cores.

If TMPIN0 is reading 80c take off your side panel and run Prime for 30 minutes and it should be much better. If that is TMPIN1 then something is VERY wrong as the wolfdales Tcase is 72c and 80c on TMPIN1 surpasses that. The cores are Tjunction and are rated at 105c by most like coretemp, 100c by speedfan, and 95c by realtemp.

If your TMPIN1 is reaching 80c then you need to seriously look at the HSF because something just isnt right.

those temps are really hot and might not be real ,to make sure that these temps are real,run the latest version of prime 95 the one that supports multicores ,then open your case and try touching the fan's heatsink (be carefull while doing so) If you feal its very hot and you can't put your hand there more than few seconds,that means its above 65 C,and temps read by programs are real.

those temps are really hot and might not be real ,to make sure that these temps are real,run the latest version of prime 95 the one that supports multicores ,then open your case and try touching the fan's heatsink (be carefull while doing so) If you feal its very hot and you can't put your hand there more than few seconds,that means its above 65 C,and temps read by programs are real.

Games_pro

To add to this.. It should get warmer the closer you get to the base. If its cold to the touch all the way to the base then your not seated right while running prime since it should at least be warm to the touch.

Sorry guys. I didn't reply for a long time. Here are screenshots after running Prime95.

P45 system

[IMG=http://img213.imageshack.us/img213/6857/p451pr8.th.jpg]

P35 system

[img=http://img141.imageshack.us/img141/6301/p351gv2.th.jpg]

The heatsink is "warm" to the touch, but it's not 65 degrees!

Both PCs have exactly the same cases (mid tower ATX) with a 120mm rear fan and 80mm front fan.

Core 0 has a stuck sensor on both. However your load temps on the core that dosent seem to have a stuck sensor is still high, and your CPU temp reading off the die is dangeriously high.

Also.. you mentioned the thermal paste that came with the processor on both setups has on what came with the HSF? When you put the e8400 into the p45 did you clean and replace the old thermal paste on the HSF? You cant reuse it. If you didnt then that is your problem I say.

no brand will work, but at an increase of maybe 5C over something good like arctic silver 5Wartzay

If I ever find any, I'll make sure I buy some Arctic Silver.

Will a no brand thermal paste do the job? I can't find any good brands here in the local stores in Egypt.Goodfella_no4

Enta Masry ? Ahlan

I changed the thermal paste (after cleaning with alcohol and acetone), it didn't matter. The temperatures are the same:

RealTemp: 70 (Core 0) 65 (Core 1)

Hardware Monitor (CPUID): CPU 65C, Core 0 80C, Core 1 75C

Is this a defective chip, or am I just getting wrong readings? The heatsink doesn't look like 65 at all.

I have an old P4, when it reaches 50C, the heatsink is really hot! Moreover, my other E8400 in my other rig also feels the same like the one in the P45 board, just warm to the touch.