Elite Bastards posted a review of the Sapphire Radeon HD 5870 1GB video card. Here's a bit:

To be quite honest, it's hard to know what to say about Sapphire's Radeon HD 5870 that you haven't most likely already figured out for yourself. It's the fastest single GPU graphics board money can buy (and while £300 isn't cheap, it feels worth every penny if you need this much performance) and it has a near-perfect feature set from its plethora of video outputs (complete with AMD Eyefinity support, of course) through to that all-important DirectX 11 functionality.

What is even more noteworthy is that the Radeon HD 5870 packs all of this power and functionality into a graphics card that uses the same amount of power under load as its predecessor, and manages to significantly reduce its power requirements at idle while also running at far lower idle temperatures into the bargain. It may be very slightly louder, but even that is hardly a black mark against this level of card.

Indeed, it seems that everywhere we look all we see is good news and improvements - DirectX 10.1 support becomes DirectX 11, video playback performance and features are improved, texture filtering quality is improved, anti-aliasing sees the reintroduction of super-sampling (with some caveats admittedly), power consumption is lowered, temperatures are lowered.... You probably get the point by now. Yes, it's more expensive, but put simply the Radeon HD 5870 is better in every single way than its predecessor, which makes it exceedingly hard to fault. Unless you have a small system chassis of course, in which case you'll be hard pressed to fit this lengthy beast into your PC at all.

Really, there's no point in me waxing lyrical about this board any more - If you want the best, and particularly if you're the proud owner of a 30" LCD monitor, then right now that means buying the Radeon HD 5870. As always Sapphire's take on this part does everything that you would expect of it, before throwing in a voucher for a free copy of forthcoming DirectX 11 title DiRT 2 to delight you even more - Couple that with its competitive price and half-decent availability at present compared to competing Radeon HD 5870 cards, and it's a definitely a choice worthy of consideration for any enthusiast looking for a graphical upgrade.