Windows 7 - Will card work?

I have the MSI 785GM-E51 mobo, using it's onboard video (Radeon HD4200); 4Gigs of memory & a 500w PSU. Does anyone know if the Asus HD 6670 video card would be compatible w/what I have?

The board has the proper slot (pci-e 16x gen2)
and the power supply should be adequate.

specs for the motherboard can be found here.
http://www.msi.com/product/mb/785GM-...ml#/?div=Basic

Do you happen to know how well the Asus HD 6670 handles Duke Nukem & RAGE? Or should I go for another card (I can't go over $110 though).

For the money you aren't going to do a hell of a lot better.
The next tier of cards is in the 300 dollar US neighborhood.
You could always try and get lucky on ebay I had a friend just picked up a 5850 for about 90 bucks on ebay. ...and while it's an earlier model it's a much much better card.

Rage doesn't play well on pc for anyone, you can check my specs don't think I'm saying that having a weak system myself. The megatexture streaming is a little problematic on pc.
As far as duke nukem, I don't think it would be a problem. I would honestly suggest trying to hook up with a mid range card from the 5 series on ebay like my buddy did. 100 dollars just isn't quite enough for a gaming level card.
The card you have chosen will work, don't get me wrong, but it's going to be stressing itself even on the lower settings in some games.

Anyhow as you can see here, the 66xx card just doesn't stack up very well.
PassMark - Radeon HD 6670 - Price performance comparison

It'll work mind you I just can't say how well my older card was a 5850 and it would do pretty much anything at 1080p with the majority of settings on high. So I kind of use it as a yardstick for the moment, even though I've moved up to a gtx580 now.

I have the Envision H190L 19-inch LCD monitor & is maxed at 1280x1024 75Hertz, 32Bit.

I may be able to get either the 6770 (Diamond/XFX?)/550TI (Galaxy/EVGA?). So which would run Duke Nukem Forever & RAGE the smoothest?

I don't normally play w/AA & all those settings as I'm not very knowledgable w/those settings & rather not mess w/them too much.

ah if that is your max resolution things look better.

I don't have any real brand loyalty to nvidia or ati. I would however purchase xfx over diamond and EVGA over Galaxy.

Better go GTX 550 Ti because it should be available within the budget. After checking the ATI cards at same price and comparing with the benchmark result GTX 550 Ti will be the best option.. I believe

Going to go w/the 550 Ti, Which brand has the better reliability & Customer Service: Fry's

What is the difference between these 2:
EVGA GTX 550 Ti 1GB
EVGA GTX 550 Ti SC 1GB

The SC appears to have a tiny bit more core clock. I wouldn't think it enough to make any difference though.

The box of the 550Ti states:
400W/greater power supply w/a minimum of 24 Amps on the +12Volt rail.

Checked, but not sure if my PSU is sufficient to handle the 550Ti since the +12Volt rail shows 18A (even though the PSU is rated 500W). Just want to make sure I get the right card.