Today, Rage3D takes a look at a custom ATI Radeon HD 5870 design from Hightech Information System Limited - better known as HIS. HIS came to prominence in 2003 with their custom cooled ATI Radeon 9800PRO using the IceQ cooler - introducing cooling design principles that lives on in many aftermarket and OEM cooling designs today.

The card under investigation today is the HIS HD 5870 iCooler V Turbo 1GB (256bit) GDDR5 PCIe (DirectX 11/ Eyefinity) (Call of Duty: Modern Warfare 2 Game Coupon Inside) card ... whew, that's a mouthful! For simplicity's sake, we'll shorten it to the HIS HD 5870 iCooler V Turbo in this review, okay? Aggressively factory overclocked with a non-standard heatsink and fan design, this card will need to stand out from a strong existing ATI partner custom line up, including HIS' own ATI Radeon HD 5870 products, such as the HIS HD 5870 iCooler V MW2.

HIS HD 5870 iCooler V Turbo 1GB

Product Highlights - HIS HD 5870 Turbo

• $499.99USD

• 40nm Cypress core

• 900MHz Engine Clock

• 1600 STREAM Processors / 20 SIMD / 32 ROP's

• 1GB 256-bit GDDR5 @ 1225MHz (4.9GHz QDR)

• 2.72TFLOP Single Precision Compute Performance

• DirectX 11 / OpenGL 4.0 / OpenCL 1.0

• ATI Eyefinity (up to three 2560x1600 displays using DisplayPort output)

• Quad Buffer Support for StereoScopic 3D Blu-ray % Gaming

• HDMI & DisplayPort Audio with 7.1HD and Dolby TrueHD & DTS-HD Master protected audio path

• Two dual-link DVI, HDMI 1.3 and DisplayPort outputs

Today's article examines the performance, features and package value of the HIS ATI Radeon HD 5870 iCooler V Turbo, for gaming, GPU Compute and Media Center tasks - pitting it against the Sapphire Radeon HD 5870 VaporX. We'll also check out overclocking and a bit of crossfire action at both 1080p and Eyefinity3 resolutions.