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Depends a little if you will be overclocking, but Haswell doesn't offer much of an improvement over Ivy. I'm not sure which I would pick.

I guess its only fair to give AMD a representation... YOUR BASKET 2 x MSI HD 7870 Black Knight 2048MB GDDR5 PCI-Express Graphics Card (R7870-2GD5T) £161.99 (£323.98) 1 x AMD Piledriver FX-8 Eight Core 8320 Black Edition 3.50GHz (Socket AM3+) Processor - Retail £124.99 1 x BenQ GW2260HM 22"...

Idlemans great spec missed the monitor so here is one with. I've assumed its a gaming rig. YOUR BASKET 1 x MSI HD 7950 OC BE 3072MB GDDR5 PCI-Express Graphics Card (R7950-3GD5/OC BE G) £221.99 1 x Intel Core i5-3570K 3.40GHz (Ivybridge) Socket LGA1155 Processor (77W) - Retail £185.99 1 x...

I would first check the power connector from case to motherboard. Is it seated correctly? You can try shorting the power pins directly on the motherboard to turn the computer on. If it works fine every time doing this then it's the case/power button. If not, power supply is the most likely...

That's correct 45 Amps across two rails. I have the PSU it's been happily running my PII X4 and 6850 for a year now. You should get away with a 6950 but you would be pushing the PSU to its limit.

Whats with the 16GB of RAM? Seems like overkill unless it helps in your design programs? I too would wait for Haswell, if nothing else the Ivy prices may drop slightly.

Right you are. Interesting that in that AMD link the HD 8000 series is listed under the Desktop graphics section.

I guess there is also 3GB of VRAM instead of 2 which will prove useful for future titles. 2 660's is also an option if OP feels 2 in SLI when he has them will be enough power compared to 660TIs or 7950s. The 660s will probably depreciate faster than the other two cards making it cheaper to buy...

So HD 8xxx will be HD 7xxx series rebadged and for mobile only? Desktop will go straight to HD 9xxx? That's a bit strange no?

This seems to be true the 7950 is faster than the 660TI in more games than not. I guess it also matters if Crossfire or SLI is better if OP wants to double up. I don't know the answer. Does the 7950 OC better due to voltage adjustment?

Can he not use the integrated graphics? Tough choice at the moment I don't feel there are many good G card deals right now. Prices have mostly increased in both the green and red camps for some reason. What about second hand GTX 580s? are they expensive? Edit: 580s are about £180 buy it now.

The 7950 is a good choice. Given your game choices though it would be worth considering the 660TI especially for BF3 YOUR BASKET 1 x Gainward GeForce GTX 660TI 2048MB GDDR5 PCI-Express Graphics Card £227.99 Total : £238.79 (includes shipping : £9.00). Both would suit you well.

Hopefully its fine and it is the GPU that is the issue but for instance the PSU could be on the may out and not powering the 430 while which uses far more power than the on board chip. Or another scenario is the motherboard having PCI-E issues. You are right that the only way you can find out...

For gaming Id say not worth it. For video it may be, depends if you are finding you X4 is slow.

hmmm... those 12v rails looks weak to me with only 324W Without knowing more I wouldn't go crazy with that PSU.

What power supply do you have? From your description its not definitive that the problem is your graphics card (even though its most likely). You may also need a new PSU for the GPUs being suggested so worth factoring that cost in.

If the only game you want to play is sleeping dogs then Andantech would say you are wasting your money: http://www.anandtech.com/show/6934/choosing-a-gaming-cpu-single-multigpu-at-1440p/8 SD appears to be very GPU intensive. Skyrim seems more CPU insensitive but Tom suggests you shouldn't...

Very true, who knows what the tester was reviewing.

You may have a point, it may like more cores. Don't think there are any sys requirements yet? The game isn't out until September so I would wait before buying a new rig for it as you will get more performance/£ once the game is released.

I also would have thought a 4.2Ghz FX 6100 would bottleneck a lot of games with a 7970 but i'm struggling to find evidence of that happening. Of course i'm not saying one should buy a FX 6100 over a i5 for gaming if they have the money, but if they cant afford the i5 then the FX won't hurt...