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Diamond Radeon HD 4870 1GB
Video, Power, and Overclocking
HQV
130
130
130
130
130
0
Score (130 = highest)
149.5
HQV
100
100
100
100
100
0
Score (100 = highest)
115
With all of these high-end cards, video acceleration it as perfect as it gets. 
Power Consumption
(Show All Graphs)
43
45
56
75
75
0
Watts (lower is better)
219.65
120
125
125
130
191
0
Watts (lower is better)
219.65
Power consumption isn't great here, ATI sticks with their broken mold having gone after performance in lieu of power efficiency. But there isn't an additional power burden for having extra memory; and there shouldn't be, since there are the same number of memory chips. The heatsink goes unimproved, which at idle, is damn quiet. Under a load, the 4870s become fairly loud, with fluctuations in fan speed according to temperature; this, actually, is more prominent than the fan's volume, which is nowhere near as loud as the GTX 280. If your choice is between a GTX 260 and a 4870 and noise is a primary concern, stick with the 260--it's practically inaudible under any load. 
Overclocking
(Show All Graphs)
790
0
MHz (higher is better)
1265
1100
0
MHz (higher is better)
1265
Overclocking is practically guaranteed to max out the Catalyst Control Center's limits. I mean, with the amount of air the fan is capable of moving and the all-solid-state power regulation, getting the extra Mhz is as easy as dragging a slider.
Page 1: The Card, Bundle & Test Setup
Page 2: Specifications and Setup Page 3: DirectX 10 Titles Page 4: DX9, OpenGL, and Synthetics Page 5: Video, Power, and Overclocking Page 6: Conclusion 
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