Okay, we just talked about the standard reference architecture. HIS is doing it slightly different with this model though.
First off, there are two models. The standard HIS Radeon HD 5850 iCooler V has the graphics core clocked at 725 MHz and the memory clocked at 4,000 MHz. The HIS Radeon HD 5850 iCooler V Turbo as we test today, has a little more stamina with GPU and memory clocks of 765MHz and 4,500MHz respectively. The faster clocks kick it up a notch and will definitely bring in a little extra performance.
The HIS R5850 V iCooler Turbo is all about the cooler though, as it shaves off quite a few degrees C more than the reference cooler. iCooler is a heat sink that has been designed to keep the card significantly cooler than the reference. The cooling system provides presence of the big fan allocated on the center, and an array of aluminum edges on the heat sink.
To juice it all up, both the HD 5850 iCooler V and the iCooler V Turbo will require a power supply of at least 475~500W. You will spot two 75W 6-pin PEG PCI express power connectors.
What's good to know is that HIS is offering the cards either as reference based, iCooler products and then a choice with or without a game voucher for downloading the Call of Duty: Modern Warfare 2 PC game.
But let's place the primary clock specs into a little chart so you can compare.
Radeon HD 4870
Radeon HD 5850
HIS R5850 iCooler v Turbo
Radeon HD 5870
Memory Data Rate
Maximum Board Power (TDP)
Idle Board Power
As you can see the HIS R5850 V iCooler Turbo comes overclocked a little at the core with a 40 MHz increase and an effective 500 MHz extra on the 256-bit gDDR5 memory. Now of course you'll be able to tweak out more speed as the card has plenty of headroom for overclocking.
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