Radeon HD 4850 X2 

One is that ATI has to create a CrossFire profile for every single game to benefit from their dual-GPU technology.

The HDCP output then features the usual HDCP+Audio, which allows easy setup of a media PC.

So if you play any windowed games for whatever reason then the HD 4850 X2 will perform exactly like a HD 4850 single card.

The actual 3D performance gained is 15.

You may combine two of these cards for even more performance in CrossFireX.

I have never had a card that noisy on my test bench.

You can also combine this card with a single HD 4850 (or HD 4870) card for triple CrossFire.

Another factor to consider is that CrossFire does not work in windowed 3D.

CrossFire does not work in windowed 3D.

Once you successfully master the process of getting the card to run at matching clock speeds, you can achieve some nice performance gains; in our case about 15.

The GDDR3 memory chips are made by Samsung and carry the model number K4J10324QD-HJ1A.

To achieve optimum performance you must ensure that both GPUs run at the same core and memory clocks.

Motherboard:Gigabyte P35C-DS3RIntel P35Memory:2x 1024MB A.DATA DDR2 1066+ CL4Harddisk:WD Raptor 740ADFD 74 GBPower Supply:OCZ GameXStream 700WSoftware:Windows XP SP2Drivers:NVIDIA: ForceWare 177.83ATI: Catalyst 8.10HD 4850 X2: 8.542 All video card results were obtained on this exact system with the exact same configuration.