Graphics Slugfest: ATI Radeon HD 4850 CF, HD 4870, HD 4870 CF vs. NVIDIA GeForce GTX 260, GTX 280Preview: Sapphire Radeon HD 4870 512MB
Not only do we have the Force3D Radeon HD 4870, we also have the Sapphire Radeon HD 4870 512MB. It's based also on the ATI reference design, and has ATI reference clocks of 750MHz and 900MHz for the core and memory respectively.
The Sapphire Radeon HD 4870 512MB, also on the ATI reference design.
Dual 6-pin connectors to supply power to this card.
As we can see, the blower is PWM-controlled. The fan is kept at approximately 20% fan speed most of the time, rising a little to say, slightly below 30% during heavy loading. Similar to the Radeon HD 4850, the expense of attempting to silence the blower here results in a really, really toasty card.
Similar to the Radeon HD 4850, a metal backplate is used.
Two heatpipes to channel heat faster from the RV770 core.
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