The Windows Experience Rating isn't a bad place to start. It won't suggest upgrading RAM, but it will rate your computer bits on a scale of 1.0 to 7.9, and you can look at what's lowest and consider upgrading that.
Generally the hard drive will be the lowest score, but if you're running a reasonably modern 7200 RPM hard drive there's no need to upgrade there. (Maxing out the disk score requires an SSD.) But if the rest of your scores are balanced, there's no one thing that would speed up the computer lots; if one score, say CPU, is low compared to video, then a faster CPU would probably be worth getting, if you can do so affordably.
My system gets a 7.3 for CPU and memory, and a 6.0 for the graphics benchmarks, and a 5.8 for HDD. This makes sense; I've upgraded my CPU and motherboard and RAM since getting my current video card, which is a last-generation midrange card.
This web site is a good guide for upgrading your video card; click on the kind you have and it'll rate other cards as 'too slow to be worth the money to upgrade' or 'way faster, but costs too much'. http://emsai.net/reviews/gpu/ And they have a CPU version: http://emsai.net/reviews/cpu/
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Generally the hard drive will be the lowest score, but if you're running a reasonably modern 7200 RPM hard drive there's no need to upgrade there. (Maxing out the disk score requires an SSD.) But if the rest of your scores are balanced, there's no one thing that would speed up the computer lots; if one score, say CPU, is low compared to video, then a faster CPU would probably be worth getting, if you can do so affordably.
My system gets a 7.3 for CPU and memory, and a 6.0 for the graphics benchmarks, and a 5.8 for HDD. This makes sense; I've upgraded my CPU and motherboard and RAM since getting my current video card, which is a last-generation midrange card.
This web site is a good guide for upgrading your video card; click on the kind you have and it'll rate other cards as 'too slow to be worth the money to upgrade' or 'way faster, but costs too much'. http://emsai.net/reviews/gpu/ And they have a CPU version: http://emsai.net/reviews/cpu/
--damn bunni