Radeon HD 5750 

If you spend most of your day at the desktop idle, working office apps or surfing the Web, the ~20W saved might be able to make quite a difference over time.

As far as I know it's the only HD 5750 card using Volterra's excellent voltage regulators that offer incredible software control and monitoring features - better than any other VRM solution out there.

It is well supported by all overclocking software.

It is not only quiet but the temperatures look great too, below 70° under load.

PowerColor's heatsink uses four heatpipes and a copper base to transport the heat away quickly to a large number of fins where it can be dissipated to the surrounding air.

As you can see, the card shows excellent temperatures, which are perfectly safe.

Strap a 120 mm fan onto the heatsink, bump the voltage and you'll soon be breaking some records (in that performance class).

PowerColor also managed to squeeze in these changes without any reduction in clock rates or performance, which is what we often see on so called "green" products.

When looking at pure performance per buck you will be disappointed however.

Motherboard:Gigabyte X58 Extreme Intel X58 & ICH10RMemory:3x 2048 MB Mushkin Redline XP3-12800 DDR3 @ 1520 MHz 8-7-7-16Harddisk:WD Raptor 740ADFD 74 GBPower Supply:BFG ES-800 800WSoftware:Windows 7 64-bitDrivers:NVIDIA: 195.62ATI: Catalyst 9.12HD 5750: Catalyst 10.2Display: LG Flatron W3000H 30" 2560x1600 All video card results were obtained on this exact system with the exact same configuration.

Crossfire configurations are supported to improve performance even further, even though I'm not sure how much sense it makes to have two of these cards dump their heat into a closed case.