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Low Dissipation Guaranteed

AM2: AMD Reinvents Itself
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As usual, AMD has given some thought to power consumption. Dissipation has improved drastically on the midrange processors, but the CPUs in the premium class have gotten worse.

Energy Consumption
Model New (AM2) Old (939)
FX-62 125 W  
FX-60   110 W
FX-57   104 W
X2 5000+ 89 W  
X2 4800+ 89 W 110 W
X2 4600+ 89 W 110 W
X2 4400+ 89 W 110 W
X2 4200+ 89 W 110 W
X2 4000+ 89 W  
X2 3800+ 89 W 110 W
Athlon 64 3800+ 62 W 89 W
Athlon 64 3500+ 62 W 89 W
Athlon 64 3200+ 62 W 89 W
Athlon 64 3000+ 62 W 89 W
Sempron 3600+ 62 W  
Sempron 3500+ 62 W  
Sempron 3400+ 62 W  
Sempron 3200+ 62 W  
Sempron 3000+ 62 W  
Sempron 2800+ 62 W  

Based on AMD's figures, all single-core Athlon 64 processors feature thermal dissipation levels lowered by 27 W, corresponding to 30% less power consumption. Power to the X2 processors has been reduced by 19%, from 110 to 89 W. Compared to its predecessor, the FX-60, the Athlon 64 FX-62 has added no less than 15 W to now stand at 125 W. This puts the top models from Intel and AMD on an almost level footing.

The CPUs still feature Cool 'n' Quiet technology, enabling the Athlon 64 X2 5000+ to gear down from 89 W to 31 W, while reducing voltage from 1.3 to 1.1 V. On the Athlon 64 FX-62, power is cut back from 125 W to 38 W.

Dissipation is measured for the complete system. It consists of the following components: mainboard with CPU and RAM, graphics card (7800 GTX), two hard drives, DVD-ROM, and power supply unit (PC Power & Cooling Turbocool 510 SSI).

CPU dissipation is measured without Cool 'n' Quiet or Speedstep, as these settings are not possible with all test samples.

In dual-core processors both cores are affected at maximum load.

When it comes to dissipation, AMD is still well ahead. Compared to the old platform, power has been cut back on most CPUs.

Summary
  1. The AMD Generation Comes Of Age
  2. New Socket AM2 With DDR2
  3. Memory Speed: Socket AM2 Vs. Socket 939
  4. Write Performance
  5. Write Performance, Continued
  6. Write Performance, Continued
  7. Memory Speed: AMD Vs. Intel
  8. Memory Speed: AMD Vs. Intel, Continued
  9. The Divider Problem
  10. DDR2 SLI Memory: 10.3 GB Per Second
  11. Automatically Overclocking SLI Memory
  12. Automatically Overclocking SLI Memory, Continued
  13. All New AM2 Processors
  14. The New Socket AM2 With 940 Pins
  15. New Retention Module Requires New Heatsink
  16. Low Dissipation Guaranteed
  17. New Energy-efficient Processors
  18. Heatsinks: Things Gets Louder, Continued
  19. Features: Virtualization And TCPA
  20. Price Comparison: AMD More Expensive Than Intel
  21. Motherboards
  22. Gigabyte
  23. Epox
  24. The New nForce5 Chipset For AM2
  25. LAN Interface With 2 Gbit/s
  26. Test Setup
  27. Benchmarks And Settings
  28. Benchmarks Socket 939 Vs. Socket AM2
  29. Games - DirectX
  30. Games - DirectX, Continued
  31. Video
  32. Video, Continued
  33. Video, Continued
  34. Video, Continued
  35. Audio
  36. Applications
  37. Applications, Continued
  38. Applications, Continued
  39. Multitasking, Continued
  40. Synthetic Benchmarks
  41. Synthetic Benchmarks, Continued
  42. Synthetic Benchmarks, Continued
  43. Synthetic Benchmarks, Continued
  44. Synthetic Benchmarks, Continued
  45. Evaluating The Benchmark Scores
  46. Athlon 64 X2: Now Somewhat Slower
  47. Benchmarks AMD Vs. Intel
  48. Games - DirectX
  49. Games - DirectX, Continued
  50. Video, Continued
  51. Audio
  52. Applications
  53. Applications, Continued
  54. Multitasking
  55. Synthetic Benchmarks
  56. Synthetic Benchmarks, Continued
  57. Synthetic Benchmarks, Continued
  58. Synthetic Benchmarks, Continued
  59. Synthetic Benchmarks, Continued
  60. Synthetic Benchmarks, Continued
  61. AMD Athlon 64 FX-62 Vs. Intel Extreme Edition 965
  62. Conclusion: Good Energy Efficiency, But A Bad Value For Money
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