Cooling Issue

Idle (centigrade)
CPU = 44-46
MB = 42-44
HD = 44-46
Load-Running Prime95
CPU = 56 max
MB = 50 max
HD = 52 max
All temperatures recorded in speedfan. The load temps reduce significantly if I remove side of case, close to idle temps with case closed! Does that mean my cooling is inefficient or is this to be expected?
My understanding is the CPU temperature is acceptable but the system temperature may be a little hot. Although it runs stable at moment I’m thinking of improving the cooling.
Would a better PSU have much of an impact on the temps?
I have a boxed heatsink and fan on CPU which presumably is adequate.
At the moment I have an exhaust fan on PSU and a rear intake case fan which fans air across the inside of the case through some gaps on the front of the case. I’m not sure whether I can fit another fan but my motherboard only has one connector for a system fan. Do I have any other options?
My +12V rail was permanently above 13V (13.01-13.07) while running Prime95. I know that this is within 10% but is this expected? Idling, it is typically 12.77V.
Any thoughts?
Tks Dave

Quote
Is the 4pin 12V cable the small square connector with 2 black and 2 yellow wires? Is that specially for an additional fan or does it have some other purpose?
Yes, that is the 4-pin 12V connector. It is used on some boards for CPU power, if your board does not have the plug for it, then it is not needed to run that board.
Quote
So are you suggesting I ditch my rear intake case fan
The fan in the rear of the case should be an exhaust fan, not intake. If it is drawing air into the case, simply turn it around, so it pulls air out of the case. A fan at the back pulling air in, will draw warm air from the PSU back into the case.
Hope that answers your questions.

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This question was solved.
View Solution.

AhmedHM wrote:
1-Pcie 2.0 is backward compatible. Therefore, it should work fine.
I know, but I don't want to bottleneck my system... I understand. Using a PCIe 2.0 card will not bottleneck your system.
2- I don't believe that this card will fit. I normally recommend staying under 9".
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As for a card, this is more difficult. HP has their video cards made to their specs. Therefore, it is difficult to know which cards would perform better. However, I like XFX, BFG, EVGA, Sapphire and PNY in that order. Here is a card that should perform to your needs. This is based on a nVidia chip. Also, here is a card based on an AMD/ATI chip. Both cards are double profile (cover two slots). This means that one of the PCIe x1 slots will be covered. It is always a good idea to read as many of the customer reviews as possible. They will give you the straight scoop without manufacturer hype.
4-The AMD/ATI cards come with their Catalyst Control Center. This software suite allows you to control the fan speed of the card.
I meant the case: is the single 80mm fan sufficient, and if not, can I add more fans? I understand. Controlling the fan on the video card will help the entire computer. The majority of heat can be generated by the card.
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Thank you for the quick reply
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Quote from: Henry on 01-February-11, 11:23:45
Maybe the fact that by shutting off the power like like that you lose the standby power to the MB creating your problem. Do you have the same problem if you don't shut the wall switch off and just shut the PC down the normal way in Windows?
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