What power supply and GPU should I get?

As far as PSUs are concerned, be informed. Before you buy any PSU read accurate, objective PSU reviews at reputable sites such as www.jonnyguru.com or www.hardwaresecrets.com on the EXACT model PSU that you are interested in as some brands have good and poor quality PSUs.

You can also get an accurate rating of how much PSU power is required for your current or future system at the PSU calculator link below. Once you know the total PSU watts required then you need to confirm that the 12v rail has enough amps. to support your Vid card(s) and the rest of the PC system.

There are several websites that show the Vid card power consumption in watts. Divide the watts by 12 to determine the amps. required on the 12v rail(s). Add 15 amps for the rest of the PC on the 12v rail and you now know the Minimum total 12v rail amps required under full load. It's best to have at least 5-10 amps. reserve on the 12v rail available under full load so the PSU is not loaded to 100%.

It's also worth noting that people often misunderstand the 80% power rating. This is a rating of the PSU's energy efficiency not it's output. 80% plus PSUs use less grid power to produce the same PC power. If it's 80% Bronze, Silver or Gold the cost savings on electricity is pretty small between Bronze, Silver and Gold unless you are paying very high rates for electricity so any 80% rated quality PSU is fine even if not Gold. For those who leave their PC on 24/7 a quality 80% PSU is a good investment.


http://extreme.outervision.com/psucalculatorlite.jsp

http://www.guru3d.com/article/geforce-gtx-560-ti-sli-re...

http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_5...

The GTX560ti would be a very nice upgrade from the 5750.

It has a 450watt PSU but I don't know if it's a quality one or not.

Do you know how many amps are on the +12/v rail(s) on your 450 watt PSU?

Since it's an i7 870 you still have some mileage left on it.I would suggest O.C.ing for improved performance and it should last you a while longer.Should last you about 2-3 years more.

What is your budget for the new PSU(if you infact need one) and the GPU?

Do you copy and paste that every time?

I'm looking at my PSU now and while I'm not sure (because the grid label isn't very clear) it's telling me that my 3.3V rail outputs 16A, my 5V rail is 20A my 12V1 rail is 18A, and my 12V2 rail is also 18A. Right below the 12v1 and 12v2 grids it says that my max W is 360. Also is there a way to find out if I've got a PCI Express 2.0 slot? I believe I've got it from this page on the specs tab.
As far as budget is concerned I'm pretty flexible, I figure the money I save by getting a nice graphics card and PSU and transferring them over to my next comp is worth it, not to mention PC gaming is cheaper in the long run.

When it comes to the size of the PSU, are they different sizes? I'd rather not get one and have it be too big.

Best answer selected by jp0249107.

nHi there, so I'm interested what card you got and what PSU? How is the performance now? I'm also thinking about upgrading, but in my case I would go with a GTX 460 OC (MSI, Palit or eVGA). Please let me know - thanks