Is it normal for core temperature to rise and then fall considerably while overclocking?
I am using atitools to overclock my Go 7300 GPU and the temp rose to about 69'C at i think 400 (default is 350) and then it dropped to about 61'C by the time the speed got to 450. Also what are those 3 things: 2d, 3d low, 3d performance? Are they modes for the same thing because using ati tools the program would increment each one to the same number even though they started on very different defaults each?
Update:btw my idle temperature is high fifties to low eighties BEFORE overclocking...What's wrong?
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To answer your question: Yes it is normal for a temperature to drop once the fan starts spinning to its maximum capable speed. When the computer is Posting (When you start the computer and it loads through the BIOS), the speeds of all the fans are set to max initially but may drop if your BIOS settings (as well as Windows Settings) are set to some kind of Power Saver mode.
Also, when your Windows loads up, the initial CPU+GPU temp may be high, but that's because of Windows loading all your neccessary services and startup applications.
In my opinion though, you shouldn't be overclocking your PC if you're pushing 61C at idle temperatures. Your core temp for a GPU should be around 40-45C idle if you're using fan-based cooling. Of course Liquid Cooling is much more effective and can keep temperatures much lower than that.
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yes it is normal. If you are going to overclock a graphic card you need to get better cooling for the pc
the differant modes are there so say wnen you are just browsing the net and you don't need such fast graphics it will not clock the GPU as fast
BTW 69c is not that high for a graphic card, they run much hotter than cpus do
What you need to do is have more effective cooling in your PC a fan scucking in at the front and one extracting at the back is usually motr than enough. A PCI slot extractor will help the graphic card as well
http://www.amazon.co.uk/Exhaust-Extractor-Fan-Inte...