I'd say that's a really capable card for that price. As long as you don't plan on running Crysis with full settings you should be in good shape with this one. One of the user reviews says that it runs CoD4 nicely so in my opinion that's pretty good and it should be able to run games for about 3-4 more years with decent results.
You'll most certainly be able to run the Orange Box nicely.
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