Last year AMD announced the Radeon HD 4650 and 4670.
Both products were released in the Q3 2008 timeframe. There is now a multitude of variations across the budget from a low-end to mid-range segment. AMD also introduced a lot of variations in the lower end 4000 series as you'll spot:
Radeon HD 4670 (RV730XT) at 79 USD
Radeon HD 4650 (RV730Pro) GDDR3 at 74 USD
Radeon HD 4650 (RV730Pro) GDDR2 at 69 USD
Radeon HD 4550 (RV710XT) GDDR3 at 45-55 USD
From top to bottom these products are based on a 146 mm2 55nm chip, with the UVD 2.0, DirectX 10.1 and 8 channel sound through HDMI. The entry-level 4500 based product will have 80 Shader (Stream) processors, all 4600 series products will have a far nicer 320 Shader processors.
The Radeon HD 4600 series will remain below 70 Watts power consumption, in fact you don't even need to connect it to a 6-pin PSU power connector. That reeks of good performance per wattage alright.
ATI Radeon HD 4850
ATI Radeon HD 4670
ATI Radeon HD 4650
ATI Radeon HD 3870
# of transistors
Stream Processing Units
2000 MHz GDDR3 (effective)
2.0 GHz GDDR3 (effective)
1.0 GHz GDDR2 (effective)
2.25 GHz GDDR3 (effective)
Math processing rate (Multiply Add)
Power Consumption (peak)
Above, a comparison scaled over the newer and older budget to mid-range products.
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