Looking to build computer for girlfriend to play games over LAN, tight budget

[scaryjim]

A Gigabyte 740G board, with Athlon X2 6000+ CPU

If all you're looking for is gaming @ 1024 x 768, I wouldn't go for an X2 6000+ - that's massively overpowered for what she needs. The Athlon LE 1640 would easily suffice, or if you want dual core go for the 4850e or 5050e. All those processors have a *much* lower power draw than the 6000+ and will easily cope with the games you are suggesting at low resolutions.

Also, the 740G board holds no real advantage over a GeForce 7025 (MCP630) based board if you're going to use discreet graphics anyway, and you should be able to pick up a geforce board slightly cheaper. It's well worth shopping around, especially as ebuyer have free delivery over £50 which normally means you only have to buy 2 components from them to take advantage! Or you could always use the money saved on the processor to get a 780G board, then save up for a bit longer and get yourself a 4830 instead of a 4670 (£90 vs £60)!!!

[DanceswithUnix]

To be fair to Nvidia, you would find the 9600GSO similarly impressive, though at that price point many rate the ATI card better value right now (can't say myself, as a Linux user I have had to stick with Nvidia even when ATI looked a much better buy for Windows use).

At the low end, a bit more money often buys noticeably more performance.

[scaryjim]

general question, 7750+ black edition or Athlon x2 6000+ AM2 , Windsor Core?
Price difference is a couple of quid less, a stock cooler and higher stock ghz rateing.
Which would be better and why?

According to the Hexus 7750 review there's not a lot to choose between them. The review covers pretty much every aspect you might want, so I'd suggest you take a read and decide which benchmarks would most realistically reflect your average workload...