Aces High Bulletin Board
General Forums => Hardware and Software => Topic started by: eskimo2 on July 14, 2005, 11:55:48 AM
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On Mobo & video cards.
Thanks,
eskimo
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one way is to reboot and enter the bios (Del key on startup) and its in the hardware monitor section or something similar
use a in windows program ..
Asus probe is whats on mine
(most higher end mb's have some sort of in windows monitor) also alot of the pent4 type pc's need there program running all the time for cpu overheat protection
add aftermarket indicators , or use a infrared tester (thats what i also use)
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I just downloaded and installed everest.
What temps are OK, what is bad?
eskimo
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amds like to be below 50C for best performance
Pents will run alittle hotter sometimes but they also throttle back when too hot.
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Originally posted by Roscoroo
amds like to be below 50C for best performance
Pents will run alittle hotter sometimes but they also throttle back when too hot.
We had a posting disproving this myth last year.
Providing the temperature of the CPU is not so hot that the CPU is shutting down or throttling down, lowering the temperature of the CPU DOES NOT INCREASE PERFORMANCE.
In tests conducted here by someone in the AH community, benchmarks with 3dMark were taken with the CPU being cooled at a low temperature with Maximum fan speed, and at a fairly hot temperature with (I think) no (or almost no) fan revlolutions.
Result: No difference in framerates or other CPU benchmarks.
That's not to say that cooling a component won't increase its life, (or allow you to overclock it to get better performance, but that is an entirely other thing,) but how much so is a matter of great debate. Does running a CPU hot, but still within the manufacturer's spec, reduce its life from 20 years to 5 years? That's tough to say, (they won't) but even if it was true, are you still going to be using that CPU in 5 years plus one day? If you're a gamer, I doubt it.
Anyway, back to the original question. I like SpeedFan (google it) for reading temperatures and fan speeds. It does a lot more than that too. (I wrote an article for PCMag last month that covers it in great detail. If interested, check out: http://www.pcmag.com/article2/0,1759,1819693,00.asp)
See you up there...
-Llama
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thats a crock ...
I dare ya to run a barton at its peak manufaturer temp ratings 80-90C and tell me it doesnt affect the perfomance ..
most bartons/tbreds ect start stuttering and locking up by 60c .
... punt that thread ... i dont remember it ..
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heat interferes with the flow of electricity..
less flow of electricity in a processor and your get degraded proformance...
Electricity 101
DoctorYo
PS: I bring some waders for the next one Llama :D
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Originally posted by DoctorYO
heat interferes with the flow of electricity..
less flow of electricity in a processor and your get degraded proformance...
Electricity 101
DoctorYo
(....)
Correct but pretty missleading. Lower temprature will give the possibility to run higher clock frequency to some account. So you can get higher calculating power if you up the frequency. When running cooler it might use less current, so you can say its more performance cause same processing power for less current.
Normally, if you keep the stock frequency, the temprature doesnt change performance untill the cpu overheats, where it either stops running, throttles down or produces errors.
So cooling alone does not change the performance when thinking of processing power. However, you can run a higher than normal clock frequency, have a longer lifetime or use less current.
This is electronics. Electricity 101 doesnt translate directly. Most electric motors give more power when running cooler, wires have less resistance when cooler but a cpu wont give more frames per second from running cooler alone.
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I had an AMD Athlon 1200 in a badly ventilated case (designed for a P2/266) for months on end. It ran at 67° and there were no problems.
My AMD XP2600 normally runs at 47°, but in the current heatwave (31°) it's running at 57°. No problem at all.
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The basic principles of semiconductors operate by changing the electron energy levels in a material when a voltage is applied. This same change in energy level is also affected by temperature. When the temperature is above a predetermined design value, the applied voltage competes with the thermal effects for operation of the semiconductor. When this happens, you loose bits and clock cycles, ect and the device stops operating as intended.
Modern semiconductors operate at lower voltages to reduce the amount of heat generated during operation. For the electronically inclined, the heat due to semiconductor operation is related to the I^2R and V=IR, so dropping voltage drops the current and heat generated per clock cycle. The higher the clock cycle and more instructions done per cycle the more heat is generated. AMD processors generate more heat per clock cycle than Pentium's because the AMD uses a complex instruction set. The Pentiums began using reduced instruction sets between the P3 and P4's. That is why a 2.2GHz AMD 64 can perform like a 3.2GHz P4.
Lowering the CPU temperature will in no way guarantee you can overclock (run the CPU at speeds above its design frequency). However, since you typically need to raise the CPU voltage to get the higher clock signals 'cleanly', you must have extra cooling capacity because the processor must generate more heat due to both the higher voltages and clock speeds.
The effect of temperature also provides what is called 'dark current' in photoelectronic semiconductors (like the CCD in a digital camera). Cryogenic cooling is typically used to minimize this effect when doing sensitive laboratory instruments. Digital cameras compensate for this with software and more expensive digital camera's will have less temperature sensitive CCD's (better electronics).
To get back on topic, AMD, Intel, ATI, and Nvidia processors all have internal temperature sensors. Software (which may involve reflashing the BIOS) can get you that information.
Regards,
Malta
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Originally posted by Roscoroo
thats a crock ...
I dare ya to run a barton at its peak manufaturer temp ratings 80-90C and tell me it doesnt affect the perfomance ..
most bartons/tbreds ect start stuttering and locking up by 60c .
... punt that thread ... i dont remember it ..
Sorry ros, that's the way it is.
Supercool a CPU at its intended frequencies and bechmark. Then let the same CPU get to the upper ranges of manufacturer's spec. Benchmark it again.l
Same benchmark speeds. Tested right here, but the forum search engine doesn't seem to want to let me find it. Either you think I am inventing this posting or you do don't; your choice.
But really, do you actually think that the same processor somehow reads and writes instructions faster or slower based on its temperature, assuming it is within the manufacturer's spec? Do you think it sweats, and that the sweat gets in its eyes and slows it down?
If this silly notion were true, then every time you saw a benchmark of a processor, you would have to see the temperature the tester was using, wouldn't you? And you don't. There's a reason for that.
If I can get the search engine to find that posting, I'll let you know.
-Llama
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Ros,
I found the thread. A thread YOU posted in too. ;-) Here's the URL:
http://hitechcreations.com/forums/showthread.php?s=&threadid=135235
Check for SilverFox's post with an excel table 3/4th of the way down.
Still a good read...
-Llama
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Motherboard Monitor (http://mbm.livewiredev.com/)