Introduction and Specifications

The PC scene is constantly evolving as businesses and individuals make use of next generation products that increase productivity or provide higher levels of entertainment. Bigger, better, faster - these are the insatiable desires of consumers. It doesn't matter if we're speaking of gigahertz or gigabytes, the demand endures and companies do their best to crank out sought after new technology.



As we're currently witnessing, competition for consumer dollars is fierce within respective markets and few can argue that there has never been a better time for those looking to buy. The Radeon HD 4890 is ATI's latest contender and we covered it extensively at launch. Now, overclocked variants of the videocard are rolling out with the goal of squeezing every last bit of performance from the RV790 GPU. Stock heatsinks do well to move the heat from the videocard at reference settings, but overclocking the core and memory quickly surpasses the threshold in which those heatsinks were designed for. That's where PowerColor's HD 4890 LCS liquid cooled videocard comes in. With factory overclocked speeds and increased cooling capability, let's find out what this card has to offer.







PowerColor Radeon HD 4890 LCS





PowerColor HD 4890 Liquid Cooling Solution Specifications and Features

Fabrication Process 55 nm Transistors 959M Core Clock

900 MHz

Stream Processors 800

Compute Performance 1.36 TFLOPs

Texture Units 40 Texture Fillrate 34.0 GTexels/s ROP Units 16 Memory Type GDDR5 Memory Clock

1000 MHz Frame Buffer Size

1 GB Memory Data Rate

3.9 Gps Memory Interface 256-bit Total Memory Bandwidth 124.8 GB/s Processor Cores 240 Connectors 2 x Dual-Link DVI-I 1 x 7-pin HDTV Out Bus Technology PCI Express 2.0 Form Factor Dual Slot Power Connectors 2 x 6-pin Max Board Power (TDP) 190W

Idle Board Power (TDP) 60W



PowerColor's HD 4890 LCS offers respectable speed increases over reference design cards. With an extra 50MHz for the core and a memory frequency raised by 25MHz, we definitely don't expect outrageous gains. Rather, we anticipate a measurable boost in performance coupled with the inherent advantages of watercooled parts. But before we check out the benchmarks, we'll inspect the card and its accessory bundle.