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Caveat Emptor
Earth Orbit
reply to n_w95482

Re: Need Help Upgrading Son's Computer

said by n_w95482:

said by Krisnatharok:

That said, the Radeon 6670 is a good alternative to the GT 640--its max TDP is 58w.

Using this chart as a baseline (and I'd imagine Portal 2 isn't too different from L4D2), it looks like the 640 would be the better choice of the two, and a 7750 even better. Either should work fine though, 1366x768 won't stress them much.

It is, but L4D2 is less demanding to run than Portal 2, and at a lower resolution, so the headroom may be wasted. That said, the 640 will perform better if he decides to pick up other games as well.

The Radeon 7750's TDP is ~43w (some places say 55w), so he should be good even if he goes with that card as well.
If we lose this freedom of ours, history will record with the greatest astonishment, those who had the most to lose, did the least to prevent its happening.