Is this PSU this PSU?

Or does anyone have this PSU?

Pretty sure I could but y not save a bit more n get this:
http://dinopc.com/shop/pc/650W-Corsair-TX-Ultra-Quiet-8...

i believe it is, the xigmatek 502 (older one) had a 6 & 6+2 PCI power connector

this one listed on dinopc has only one 6 pin like the one linked in your page. frankly the 502 was the better PSU in my opinion. it had more power on its 12v rail.

If you think that the Xigmatek VC ("Valued-Class") series NRP-VC503 is a 500 Watt power supply you have been thoroughly deceived by Xigmatek.

The NRP-VC503 is unable to deliver 500 Watts. It is more realistically a 350 Watt power supply because that is all it is capable of delivering.

The OEM is Solytech (a.k.a. Deer, Allied, Apex, L&C, Foxtech, Supercase) who caters to the el cheapo sector of the power supply market and is notorious for their exploding power supplies. If you don't value your system or its attached components then you get a unit made by this OEM.

Just stay away from the Xigmatek VC series. You've been warned.

If that a 350 watt what is the NPR-VC403?

And by the way, Im not going to be extreme gaming, but it would be a waste NOT to get the GTX 550ti for £15 more than the GTS 450.

same price as the xigmatek but a better PSU
http://www.ebuyer.com/product/240998

Incase you didn't see.
It needs 2 PCIE connectors for the 550ti.

Also its pre-installed in the configuration.

which one? ive looked at several GTX 550 and all took a single PCI-E power connector

I don't see a brand mentioned for the GeForce GTX 550 Ti card that you are considering.

The PNY VCGGTX550TXPB is the only GeForce GTX 550 Ti card, that I know of, where the manufacturer has specified that two 6-pin PCI Express supplementary power connectors are required.

A reference version GeForce GTX 550 Ti draws a maximum of 116 Watts (9.7 Amps) from the +12 Volt rail(s) under full GPU load so only one 6-pin PCI Express supplementary power connector is required on the card. In fact all of the other brands only have one 6-pin PCI Express supplementary power connector on their GeForce GTX 550 Ti cards.

^ just realised this about an hour ago, thanks for your help guys!

Hate to Necro this, but I'm wondering if I could run the HD 5850 on this, as the new PC I'm getting uses a lot less power than the build I originally planned.

I'm using the H61 chipset mobo and an i3 2100 which uses 60 watts less the the Phenom II, which I was wondering if I could pump them into the HD 5850.