Well i took some bits from some well known websites and here's what reviewers said:
www.3dguru.com
Performance -- Well it's grand really. Some titles like Fallout 3 I expected to see a little better scaling but the generic consensus is that the Radeon HD 5870 is MUCH faster than the current leading flagship, the GeForce GTX 285. In fact on occasion it's even faster here and there than a GeForce GTX 295. See this is not a measly small upgrade, no Sir. ATI doubled up everything on the Radeon HD 5870 making sure you will get a grand gaming experience. And oh my gawd, I just realized what a beast the 5870 X2 will be.
www.techreport.com
AMD has succeeded in delivering the first DirectX 11 GPU by some number of months, perhaps more than just a few, depending on how quickly Nvidia can get its DX11 part to market. AMD has also managed to double its graphics and compute performance outright from one generation to the next, while ratcheting up image quality at the same time. The Radeon HD 5870 is the fastest GPU on the planet, with the best visual output, and the most compelling set of features. Yet it's still a mid-sized chip by GPU standards. As a result, the 5870's power draw, noise levels, and GPU temperatures are all admirably low. My one gripe: I wish the board wasn't quite so long, because it may face clearance issues in some enclosures.
www.hothardware.com
Performance Summary: The new Radeon HD 5870 proved to be an excellent performer throughout our entire battery of tests. In comparison to other single-GPU powered cards, the Radeon HD 5870 is clearly and unquestionably the most powerful released to date. The Radeon HD 4890 and GeForce GTX 285 never really came close to competing with the Radeon HD 5870, regardless of the benchmark or game, or resolution tested.
The Radeon HD 5870 also performed very well in light of the dual-GPU powered offerings we compared it to--the Radeon HD 4870 X2 and GeForce GTX 295. More often than not, the single-GPU powered Radeon HD 5870 is faster than the Radeon HD 4870 X2, depending on the game engine and resolution; 3DMark Vantage, ET:QW and Left 4 Dead ran better on the 5870, while the cards split victories in FarCry 2, and the 4870 X2 finished out in front in H.A.W.X. and Crysis. The GeForce GTX 295, however, was a bit faster than the Radeon HD 5870 overall. The performance deltas weren't very large though, the Radeon consumed far less power, and it isn't plagued by the issues sometimes associated with multi-GPU solutions.
www.tweaktown.com
So that's our first HD 5870 and to be honest the card is a whole lot better than I expected it to be. The HD 5870 really had to do one thing; that was beat the GTX 285. The thing about that, though, is it had to do that one thing well. The good news? It does; it manages to do it very well.
www.hexus.com
NVIDIA will release DX11 GPUs at the back end of this year. AMD's shown its hand and we rate it as 'A', and there's little reason why it won't sell well in the lead time before NVIDIA's GT300 hits the shelves. The green team will need to bring an 'A+' game to the table if upstaging AMD is still a priority.
Bottom line: AMD's ATI Radeon HD 5870 and HD 5850 represent solid advances in GPU technology. NVIDIA will need to bring excellence to every facet if it's to a launch a better-thought-out series of high-end GPU.
Facebook
Twitter