Power supply question

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NClemance

NClemance

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I plan to upgrade my PCs graphics because I have a radeon HD 3400 and it is really bad, someone recommended this graphics card and said it would fit and work but then I was looking through the specs of the card and It says it needs a 300w power supply when it is a low profile gpu:
http://www.pbtech.co.nz/index.php?z=p&p=VGAEVG2615&name=EVGA-GeForce-GT610-1G-DDR3-Video-card---low-profil

I have a Small Form Factor dell optiplex 980 computer and only a graphics card that size will fit and It cannot have suplementary power, I think it has a ~100-240w power supply, please help me and thanks.
 
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hunter315
The 6450 won't over heat. Bigger cards than that have been given passive coolers and do just fine. There were variants of the 4670 with passive coolers, the 4670 has a TDP of 59W, i think the passive ones were a bit lower, but still much higher than the 18W of the 6450. You'll be fine.
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hunter315

hunter315

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Something like an HD 6450 will only draw ~18W which puts it at about the same level as the HD3410. That is also as low as you can go on power consumption of cards, if your system doesn't have enough power for it, unplug a fan. The 6450 is probably your best bet, its lower power draw than a 610 and notably better performing.
 
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NClemance

NClemance

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power supply: AC input ~100-240V at 4A (60hz) shall not exceed 88W it says
more info?:
http://sites.fas.harvard.edu/~phys191r/Bench_Notes/optiplex-980-tech-guide.pdf
 
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NClemance

NClemance

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hunter315

hunter315

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I'd go for the cheaper of the two 6450s you posted. And they are passively cooled because a 2W cooling fan would raise the power consumption by 10%!

The core clock doesn't mean anything, especially with graphics chips since they are massively parallelized, unlike CPUs that are serial and have to wait for one task to finish before the next one starts. A GPU is running hundreds of calculations in parallel, so a higher core clock lets you get each calc done a bit faster, but wayyy more cores lets you get more stuff done in a fixed amount of time. Example - 7770 has a core clock of 1GHz, the 7850 only runs at 860MHz but clearly performs better because of a slightly different core layout and significantly more cores.


The 6450 is about halfway between the GT 530 and GT 520, the GT 610 is going to be about GT 520 level of performance so yes, the 6450 is better.
 
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NClemance

NClemance

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thanks for you help, I will look into the 6450, so I shouldn't have any power problems wit it?
if yes then I can make sure it fits and buy it.
also, will it overheat?
 
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hunter315

hunter315

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The 6450 won't over heat. Bigger cards than that have been given passive coolers and do just fine. There were variants of the 4670 with passive coolers, the 4670 has a TDP of 59W, i think the passive ones were a bit lower, but still much higher than the 18W of the 6450. You'll be fine.
 
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NClemance

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I have a graphics card, but there is also on board graphics (VGA out of the motherboard) the i5 660 is not an APU
 
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