Hardware Question

Hello All,

I just baught a new fancey computer: intel i5-750, ATI Radeon HD 5750 Graphics , 8GB, yada yada yada. Its a fairly decent piece.

I will be upgrading my video card tomorrow night to a Galaxy GeForce GTX 460 1GB GDDR5

My two concerns :

  1. I have a 450watt power supply, is that enough.

  2. Heat. The ATI Vid Card that came stock is bulky, so I’m thinking it should be okay…

Guess I’m looking for opinions as to whether or not I’m going to cook my new card…

…not exactly hardware savy…

Thanks to all in advance


I would say it’s questionable. I have a much more modest SUSE Box and that has 500w Coolermaster.
The power consumption for your new card is around 160w on it’s own.

caf4926 wrote:
> The power consumption for your new card is around 160w on it’s own.

adding a little maybe:

so, you know 160 for the graphics, you can look at the label on the
hard drive, CD/DVD reader/writer for the watt needs for those…and,
the intel site has current draw for their chips and boards…just all
of that stuff up, and my advice is if it adds up to (say) 400 then you
need a 600 watt supply, at least…my rule of thumb is multiply the
known need by 1.5 and buy that size supply…(others might say
something else…)

now, the difference in price of a 450 watt and a 600 watt is not so
very much…but, here is the deal, box makers are in the business to
MAKE MONEY (surprised?) and they will almost always save the few buck
by stuffing in the smallest, cheapest power supply they can get away
with…JUST enough to do the job with the hardware supplied, for the
length of the warranty period…after that, or if you add stuff they
don’t care…

check out http://www.tomshardware.com/
wow! they used to have practical articles on how to pick a supply,
seems now all they offer are mini-advertisements…too bad!!

try this:

NOTE: i didn’t read any of the offerings so i can’t recommend any
particular one…read several, add up your watt need today AND figure
you will keep the machine 5 (?) years and may wanna add something
great next year…etc…

NOTE2: an overtaxed power supply can easily cause lots of ‘little
problems’ which are really difficult to track down…

CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

To add to DD’s comments
The exhaust fan on larger PSU’s is often bigger than the case exhaust opening for the PSU.
I had to buy carefully my case, to make sure the PSU wasn’t going to be forcing its ventilation through a smaller aperture it’s said same.

Get at least 600W or better OCZ/Corsair power supply.

okay, Thanks Guys!!

And what’s the plan for the Radeon 5750? I’d like to get my hands on one sometime this month…

In other words, can I buy it? lol!
PM me if you’re interested please…

Dexter1979 wrote:
> And what’s the plan for the Radeon 5750?

do either of you know if the drivers support it?

CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

According to this arcticle on Phoronix it should be fine. And that was in October last year. Surely it’s a even better now.


So what I did was get a corsair 750W power supply (it was actually less expensive than the 600W).

As far as the Driver for the Radeon, there was no issues when installing 11.3 64bit, it worked just fine without issues.

thanks again guys


Pleased to hear all went well for you and thanks for filling us in.

Im running a 460 GTX on a 530 Watt PSU ( two 12 Volt Lanes with 20 A ). Card works fine so far.

FWIW, here’s a handy power consumption calculator:

eXtreme Power Supply Calculator