The ATI HD4870X2, basically two HD4870 on one PCB with a fancy cooler to keep the two 55nm based GPUs from overheating. Specification wise it’s quite easy - take HD4870 specs and double them…
To be able to warrant the need for a Geforce GTX 280 or Radeon HD4870X2 you should make sure you have a 24” or higher monitor and a dual-core CPU running at 3Ghz at least (and not be afraid to overclock). At this point in time you have invested quite a bit of money so €100 more or less doesn’t really matter if your aim is to build a high end gaming rig.
So get the fastest that is available to you. In a single card configuration this is the ATI Radeon HD4870X2. If you want more still, two Geforce GTX 280 in SLI or two ATI Radeon HD4870X2 for Crossfire-X should please you lots… but when you have such a budget available just for VGA, it won’t come down to pricing, but scalability, raw performance and usability. The Geforce GTX 280 uses less power and generates less heat, is less noisy and offers the benefit of higher performance in case multi-GPU scaling fails. The ATI Radeon HD4870X2 definitely offers the performance edge when everything scales well.
» ATI Radeon HD 4870 X2 Review
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