Is it worth upgrading from my existing G620 to an I3/I5 (H61 motherboard so no o/c) or should I look at upgrading the GPU? I've got a 6870 at the moment. Mainly playing BF3 and Skyrim at 1920x1080.
For games, always GPU first. Skyrim, admittedly, is a pretty CPU hungry game, but BF3 isn't at all, that game loves the GPU. Overall though, you'll see more benefit in more games with a faster GPU.
Yeah Skyrim runs ok but I am wondering if the GPU will make a huge difference to it. Any suggestions on GPU, I was thinking something like a 7950 perhaps. Not really up to date with graphics cards so there may be a better option out there.
If your going to do a GPU upgrade this is the 1 I would recommend. http://www.kustompcs.co.uk/acatalog/info_53098.html Here is a review of it. http://www.youtube.com/watch?feature=player_embedded&v=fiM10G7UyOg I know there are other cards out there that offer similar performance etc, but they all cost more and really as this performs 99% of the times better than a 7950 it's a no brainer really.
I was looking at the 7950's over the last few weeks after seeing how easily and far they overclock as a rule. They offer great value and near 7970 performance and are popping up around the £200 mark now and again. The card linked above looks ridiculously good value though and is certainly comparable to a stock clocked 7950 for a good chunk less cash. My personal preference is for 7950 and the OC potential but if thats not your thing the 7870 linked above is a great choice.
One thing worth noting is the G620 runs the memory at 1066 which i believe would seriously hamper cpu limited games.