From what I read, this PC has a 460W PSU with one 6-pin connector. Can I run a Radeon 6850 (and will it fit the in the case)? Will I notice a significant increase in graphics performance? Is there a better option for a GPU upgrade within the limitations of the build?
I'm also thinking about the Radeon HD 6770. Would their be a noticible performance change from either the GT530 or the 8530 with this card?
I know I could have squeezed more performance out of a home-build system, but I get a sizable discount on Dell through work, so I couldn't touch the price. I got the whole system for about the cost of the processor itself. That also means no returns. The GPU is the only downfall, and I wanted to see about upgrading it at less than the cost that Dell offers upgrades at.
As far as usage goes, I'm looking to do mild gaming. Probably SWTOR when it releases. I don't have to be able to run it at Ultra, but would like solid performance at a decent framerate.
I personally ran a XFX Radeon HD6850 Black Edition for 6 months on a 430watt Coolmax power supply and hit a few BSOD's now and then but system was okay. I was just too broke to get a 500W power suppply at the time. So yes you can run a HD6850 off of a 430w + power supply.
Here is a quick tool to help you gauge how much power is recommended:
If you click the details button it has a 6+2 pin PCIE power connector, perfect for you HD6850.
And that Silver Piece of metal is a heatsink for one of your chipsets, so don't remove it. Theoretically if you keep your system cool you'd be okay, but the Manufacturer posted a heatsink for a reason.