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PowerColor Radeon HD 4850 512MB Video Card
Video, Power, and Overclocking
 HQV
HQV
(Show All Graphs)
130
130
130
128
0
Score (out of 130, higher is better)
160
100
100
100
100
0
Score (out of 130, higher is better)
160
It would appear as though finally, ATI has perfected their video playback. While previously, their scores were technically 100%, they were a little slow on correcting for moire; the delay seems gone. NVIDIA's 9800 scores well, but still over-saturates color and stops short of absolute noise reduction. Power and Noise
Power Usage
(Show All Graphs)
39
43
67
75
0
Watts (lower is better)
250
95
104
125
191
0
Watts (lower is better)
250
The 4850 consumes more power than a 3850, and is noisier, too. The stock cooler is strained to handle the heat, but it's still a low-volume, high-speed whirring sound, something that a solid case will dim well. It's also quiet, relative to the 9800 GTX, which consumes more power at idle and at load. Overclocking
Overclocking
(Show All Graphs)
700
625
0
MHz
1500
1075
993
0
MHz
1500
Overclocking in the Catalyst Control Center wasn't completely on-target. It pushed the GPU a little too far and ATI tool detected artifacts at the overclocked default; I reduced it manually to 700MHz, which is a 12% overclock. Memory had a little more headroom than what the utility settled on, and I had no issues with it at 1075MHz, a slight 8% overclock. I should think that after-market cooling will help a lot. This card runs hot, pretty consistently at 85 degrees C under any load; the fan doesn't spin up until it breaks 80 degrees. I don't know if this is a short sight or if the card really doesn't need to stay very cool; only time will tell. The fact that it can overclock against that kind of heat says a lot about this hardware's high tolerances.
Page 1: Introduction, The Card & Bundle
Page 2: Specifications and Test 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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