Just bought a geforce8800 gts 640mb, afraid my PSU is too weak

You just bought the 640mb card? Why? How much? Can you return it?

It is pretty old tech to be buying new.

If you wanted a card in the mid-range, a more suitable card would be a 4850, 9800 GTX+, etc.

I had an old ...maybe 15amp power supply running a micro atx board, 3200 amd proc, 4 512 sticks of pc3200, floppy, dvd-rom drive and god knows whatever else and a 640 card. had no problems. don't count it out until you try it.

Lol. This Starbucks thing seems a little shady .

Good luck with it. I would give it a try. If not, then you can get a new PSU.

You should be Ok since your PS puts out 29A combined through the two rails, provided you don't have the system laden down witlh bunches of hard drives, optical drives, big fans (120mm or greater), and an overclocked high wattage processor.

you'll be fine power wise, too bad you didn't spend a little extra and get a much better card tho.

^ 8800/9800 GT.

Cheap, usually many come with rebates.

I had a 640 a while back...it was a decent card in its day...but the newer G92 chips put it to shame...

You should be just fine. Personally I don't see the point in spending money on an 8800GTS 640 now adays unless you already have another one and want to run them in SLi. Hope you got a good deal on it .

Well I don't have much money right now to be honest so I just wanted to find a new 8800 gt or gts for sub 90 USD. I will upgrade in a year or so.

I'm confused. You didn't want to spend more than $90 for a new GPU, so you buy an old one that is extremely power hungry, so much so, that you wonder if your PSU can handle it, right?

If your PSU can't make it, do you use it as a paper weight, or return it, or get a new PSU to make sure you can use it?

If any of the above, besides returning it, is the option, didn't you just spend more money on it than $90?

It's up to you man. It was a good card in its day - like 2 years ago. I would have gone with a different card myself, but you've already got it, so hope it works for you.

Getting a 9600gso from ebay for $60 and overclocking it yourself would've been a better choice.

Well i'm pretty happy about it. I am using this machine mostly for graphic work (ie. photoshop, flash, autoCAD etc.) I bought the 8800 to play the occasional game such as CS:S, and strategy games. I'll probably also end up playing the Stalker series and Assassin's Creed at some point. The card came with Crysis which I don't really like so I gave that away. I don't have a very flashy monitor - just a Samsung 206bw 20".

I did a calculation on the Amps and it looks like I'll have plenty with my setup, i'll know for sure wednesday when everything goes together. Thanks for everyone's imput

Congrats. Very cool.