Looking for Graphics card, heres 2

Well, why don't you just tell us your specs first? budget?
After that we can make more suggestions for you...  

looking for around 100ish, at most 150. I play one game on computer and watch videos. Just looking for a good graphics card. Dosent need to be top top line but id like it to be nice

The 450 is definately the better of the 2, but for around that price you can get a 768m version of the GTX 460 which is alot better. What is the rating and brand of your power supply?

Also that same 5570 is 80 bucks at newegg. Best Buy is not a good place to shop for components.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
GTX 460

http://www.newegg.com/Product/Prod [...] 6814187124
GTS 450

The gts has more mhz but the gtx has more steam processor cores.
Can you please overlook the specs again and tell me which you think. (there were multiple gtx 460s i saw)

Also my power supply is 580w 20pin. I was told that I could still plug it into the 24pin, but im assuming that I will need to update with new video card.

The 460 is at least 30% faster than the 450, clock speed isn't everything. Most power supplies have a 20+4 pin plug, I would be suprised that your computer even has a PCI-E x16 slot if it only uses a 20 pin power connector. What are the rest of your specs and the wattage ratings on the side of your PSU?

^he's right, 460 is much better than 450 and 450 is much better than 5570..

Well the motherboard does have a 24 pin psu, but I was informed that I could still plug the 20 pin and it will work fine.

Without the graphics card, will this be a problem? When I go to buy the graphics card, im planning on getting a new power supply to go along with it. I'm hoping that I can get by on the 20pin for now. If this is a bad idea, can someone say so, or will this be okay for now?

okay now im confused, heres the one I purchased a while ago.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

20+4 thats 2 plugs? And thats exactly what I need for the 24bit?

It's 2 in that they separate. The 4 pin clips to the side of the 20 pin to make the 24 pin plug that modern motherboards use. Thats not a very good PSU, although it is cheap. Even though it says 580w only 300 of that is on the 12v rail and usable. Might still be ok for a 460 but not a recommended brand.

That PSU-shaped object is not fit for use in a PC. The longer you use it, the more likely your PC will be damaged or destroyed:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
If you need an inexpensive, reliable choice, get a 380W Antec Earthwatts for $45. Without busting your $150 budget, then get this HD5770 for $100 (but you need to play the rebate game and win): http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Edit: EA-380D: http://www.newegg.com/Product/Product.aspx?Item=N82E168...