I am currently looking to upgrade both my CPU and GPU on a budget of £400-500 for both.
Is there anything within that price range which will last the next 2-3 years?
Right now my CPU is an AMD Athlon II X3 440 and my GPU is a GT 430.
I am beginning to feel the need to upgrade these, I mainly need to upgrade for both gaming and video editing. With my current setup I can play most games (not on highest quality though), however my render time on video editing is far longer than I'd like it to be.
I would appreciate any advice on what to spend my money on.
Its not that AMD are bad it that the high end FX are scacely better in most uses than a older (cheaper) Phenom II.... Piledriver is due out near the end of the year so that may change the picture but as of now thats that. I use Phenom II myself I'm happy with it. The AMD parts I listed for you will do all you want fine, you could even pair them with the 670 GPU for a real kick ass setup under budget that should last a while and utilises your current mobo. The Intel setup I list though will be faster video editing, gaming faster in a benchmark probably not faster that your eyes will notice in real world gaming. It means stretching your budget a little but the end result is again a extremely kick ass system.
What would I do in your shoes? I would likely buy the AMD CPU, the cooler and the GTX670 overclock the CPU and be happy with the cash saved over an intel platform change. However if your video editing is time critical and you do alot of it I would then go for the Intel as this is where it would justify itself in your uses.