The new AMD Radeon HD 4860 uses a cut down RV790 with just 640 stream processors but retains the full 256bit memory interface common to the other cards in the 4800 series. The core is clocked at 700 MHz, and the memory at 750 MHz GDDR5, or 3000 MHz effective, in 512MB quantity - possibly with tons of space to overclock, as was the case with the Radeon HD 4770.
With good clocks and excellent bandwidth, performance is expected to be considerably higher than the MIA Radeon HD 4770, which has been troubled by the problems with the 40nm process node at TSMC. If the memory overclocks accordingly, expect this card to be an excellent alternative to the Radeon HD 4870.
The PCB seems well built although it should have some problems providing a high core overclocking. I'm also expecting this card to run on a slightly lower voltage than the HD 4890, as is hinted by the single PCIe power connector.
I'd like to see a 1GB Radeon HD 4770 card because of the lower power consumption and consequently lower noise but this new HD 4860 seems an excellent proposal for higher performance systems.
Pricing is expected to be around $130.
Source: IT68
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