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LOSTCIRCUITS
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| AMD Athlon64 "Venice" May Low Power be with you! | |
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(Review by MS May 2, 2005) |
| AMD Athlon 64 4000+ |
3D Gaming
We used the 3DMark'05 CPU Test2 to benchmark the power consumption of the different cores. CPU Test1 is also interesting in that the first run usually generates scores that are about 20% lower than the score in repetitive runs. The same is true for the power draw in that there are clear periods of greatly reduced power where apparently data are loaded. These periods coincide with low frame rates. In general, though, even in consecutive runs, the power numbers were fluctuating too much in CPU Test1 to allow more than an educated guess about the actual values, whereas in CPU Test2 the numbers were rather steady and consistent.
In the end, we took the power numbers from the second run of CPU Test2 and the overall CPU score of the second run.
The Venice core-based 3800+ achieves the highest score (blue values, columns in second tier) while sporting the lowest power consumption (red numbers [W], front columns). Power dissipation for the Winchester and the Venice cores were indistinguishable from each other.
3DMark2001SE
The benchmark that is too tough to die ... 3DMark2001SE has after almost 5 years still maintained an edge. One thing that we always wanted to know about it, though, was which one of the individual benchmarks would draw the most power, or else, why is it that the biggest hurdle for getting a successful score is always the "High Polygon Count 1 Light"?
The "High Detail" benchmarks always draw slightly more power than the "Low Detail" counterparts with the highest wattage incurred in the "Nature Scene". The top power hog and, by extension, CPU load is seen in the "High Polygon Count 1 Light" Benchmark, followed closely by the "Vertex Shader", whereas all other benchmarks that put more emphasis on the GPU will show less power draw. Keep in mind that some of these numbers will change with different graphics cards that may handle some of the loads better and, thereby, increase the data demand from the CPU. Interestingly, once again, the Venice core-based 3800+ yields the highest score. Power dissipation for the Winchester and the Venice cores were indistinguishable from each other.
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Athlon64-3500+ (Venice Core) |
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