[Gradjanin]

evo par podataka oko CFa, X2 i slicnog

CrossFireX

The product we preview today is based on the 4870, yet it has two GPUs merged together with a bridge chip utilizing crossfire technology to render your games faster. "What's Crossfire?" some of you might ask. A valid question as we take verbs like Crossfire & SLI for granted these days.

Well, just like NVIDIA's SLI, Crossfire is a situation where you add a second, third or even fourth similar generation graphics card (or in today's case GPU) to the one you already have in your PC and effectively try to double, triple, quadruple your raw rendering / gaming performance.

The idea is not new at all though .. if you are familiar with the hardware developments over the past years you'll remember that 3dfx had a very familiar concept with the Voodoo 2 graphics cards series. There are multiple ways to manage two cards rendering one frame, think of Supertiling, it's a popular form of rendering. Alternate frame Rendering, each card will render a frame (even/uneven) or Split Frame rendering, simply one GPU renders the upper or the lower part of the frame. So you see there are many methods where two or more GPUs can be utilized to bring you a gain in performance.
Today we take it even a step further. Though the X2 already has two GPUs, there's no limit to stop us combining it with yet another X2. So we will take two Radeon HD X 4870 cards, bridge them and get 4 GPUs going. So that's 4 RV770 processors running at 750 MHz. That equals 4.8 TFLOPS of performance!
Unfortunately it's also a power sucking whore in this mode, but none the less we'll look at it as well.




a evo i jedan supersuper opis gejminga s 3dgurua, za sve one koji uporno tvrde i zgrazaju se zakaj je netko spreman dati toliku lovu SAMO za igranje..rekli bi po naski..skupo al nenadje..vo


The Radeon HD 4870 X2 undeniably is the fastest performing product on the market right now. But next to the sheer gaming power do not forget the additional features like DirectX 10.1, the UVD 2.0 engine to decode the hottest Blu-ray 1080P movies, full HDMI compatibility with support for 7.1 channel sound. Surely 549,- USD / 400 EUR is a lot of money to play games folks, and I would like to relay this question back to the graphics chipset makers -- why do you think people slowly move towards consoles ? It's all about the money.
Money aside, what a true pleasure it has been testing the 4870 X2 cards. Personally I play my games at 2560x1600, I'm one of those lucky bastards to own a 30" Dell screen, and playing games like Call of duty 4 or Mass Effect with framerates over 80 FPS in that resolution with the highest Image Quality settings available .. that's just amazingly impressive .. well even that might be a slight understatement. Astounding is likely the right word for this product.