Radeon HD 5870 CrossfireX test review

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ATI Radeon HD 5870 CrossfireX

At the rear side of that rounded curve on the card we see two air intakes. The card is designed in such a manner that it will take in air from your PC and exhaust the heated air outside the PC. As always we recommend you to have a well ventilated PC with at least a 120mm intake and exhaust. Create some airflow fellas, really important.

ATI Radeon HD 5870 CrossfireX

All the way up front to the left you can see the two CrossfireX fingers / connectors. The HIS card is 100% reference based besides that sticker right there. The specifications are 100% the same as well:

  Radeon HD 4870 Radeon HD 5850 Radeon HD 5870
Process 55nm 40nm 40nm
Transistors 956M 2.15B 2.15B
Die Size 263 mm² 334 mm² 334 mm²
Core Clock 750 MHz 725 MHz 850 MHz
Shader Processors 800 1440 1600
Compute Performance 1.2 TFLOPs 2.09 TFLOPs 2.72 TFLOPs
Texture Units 40 72 80
Texture Fillrate 30.0 GTexels/s 52.2 GTexels/s 68.0 GTexels/s
ROPs 16 32 32
Pixel Fillrate 12.0 GPixels/s 23.2 GPixels/s 27.2 GPixels/s
Z/Stencil 48.0 GSamples/s 92.8 GSamples/s 108.8 GSamples/s
Memory Type GDDR5 GDDR5 GDDR5
Memory Clock 900 MHz 1000 MHz 1200 MHz
Memory Data Rate 3.6 Gbps 4.0 Gbps 4.8 Gbps
Memory Bandwidth 115.2 GB/s 128.0 GB/s 153.6GB/s
Maximum Board Power (TDP) 160W 170W 188W
Idle Board Power 90W 27W 27W

Please read our reference review for an in-depth view on the Radeon HD 5870.

ATI Radeon HD 5870 CrossfireX

And here we have the two cards all pimped out in our way too expensive test system. Looks good like a nice duo alright. Anyway, it is time to move onwards to some actual game benchmarking. But first let's peek at our test system.

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