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Athlon XP-64 Core: 95 Percent Athlon

AMD's Athlon 64 Has Arrived: the Athlon 64 FX and Athlon 64 (and Intel's P4 Extreme)
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A glance at the CPU core of the long-awaited Hammer: The greatest share of the surface (over 50 percent) is taken up by the 1 MB L2 cache.

On closer inspection the attentive observer might notice that the AMD Hammer's physical foundations look identical to the old Athlon core in many of its details. One of the innovative features of the x86 CPU is the integrated memory controller, for which space was made where the L2 cache normally sits on the Palomino and the Thoroughbred. Apart from new features such as the integrated memory controller and the enlarged L2 cache (1 MB, 16-way associative), the rest of the features remain largely unchanged. This can be seen in our photos comparing it to the Thoroughbred core. As was previously the case, there are nine function units (3 ALU, 3 AGU, FADD, FMUL and FMISC - three integer units and three floating point units) and three x86 decoders - the tried and true design cherished by AMD. Almost untouched are the L1 caches for data and commands with as size of 64 kB each, although now an ECC circuit has been added.

Looking into the heart of the matter: a view of the CPU core without the L2 cache and memory controller. The next image explains why you should care.


A comparison of the CPU cores of the Hammer (left) and the old Athlon with the Thoroughbred core makes it seem as if almost all units are identical at first glance. You can see AMD only made small changes to the details of its architecture with the Hammer - apart from the memory controller and the L2 cache, of course.
Summary
  1. A New World Order: The Athlon 64 FX And Athlon 64 Vs. The P4 Extreme
  2. A New World Order: The Athlon 64 FX And Athlon 64 Vs. The P4 Extreme, Continued
  3. A New World Order: The Athlon 64 FX And Athlon 64 Vs. The P4 Extreme, Continued
  4. Four Different CPUs With One Design
  5. Four Different CPUs With One Design, Continued
  6. Chipsets & Mainboards: Socket 754 Vs. Socket 940
  7. Chipsets & Mainboards: Socket 754 Vs. Socket 940, Continued
  8. Video 10 To Download: Athlon 64 FX-51 Vs. Athlon 64 Vs. P4 3.2 Extreme
  9. Athlon XP-64 Core: 95 Percent Athlon
  10. Athlon XP-64 Core: 95 Percent Athlon, Continued
  11. HyperTransport: A High-speed Bus Without Detours
  12. Socket 462 Gets Replaced: Sockets 745 And 940/939
  13. Fab30 Dresden Yield: 73 Athlon 64 CPUs Per Wafer!
  14. All AMD And Intel Processors At A Glance
  15. Rough Going - Hardware In The Test Panel
  16. Asus P4C800-E Deluxe: Board Revision 1.02, BIOS 1011 Beta 006
  17. Asus SK8N: Board Revision 1.03, BIOS 1003 Beta 003 (NVIDIA Settings)
  18. MSI MS-9130: Board Revision 1.0, BIOS 1.0BD
  19. General Hardware: Now More Hard Drive Performance
  20. AMD Test Platforms At A Glance
  21. Test Configuration And Special Features
  22. Sysmark 2002: Why Use Obsolete Applications?
  23. Benchmarks Under Windows XP - UPDATED
  24. SPECviewperf 7.1
  25. OpenGL Games: Serious Sam
  26. OpenGL Games: Wolfenstein Enemy Territory
  27. Synthetic: 3D Mark 2001 SE
  28. Games: Comanche 4
  29. Games: Unreal Tournament 2003
  30. Games: Splinter Cell
  31. Games: Warcraft III - The Frozen Throne
  32. Synthetic: 3D Mark 2003
  33. Game: X2 - The Threat Rolling
  34. Game: Gun Metal
  35. Games: AquaMark3
  36. MPEG Encoding: Main Concept MPEG Encoder
  37. MPEG-Encoding: Pinnacle Studio 8.8
  38. MPEG-Encoding: Xmpeg & Divx 5.1 Pro
  39. MPEG-Encoding: Windows Media Encoder 9
  40. MPEG-Encoding: MS Movie Maker 2
  41. Magix MP3 Maker 2004 Diamond
  42. Lame MP3 Encoder
  43. Steinberg Nuendo 2
  44. Sysmark 2002
  45. Winrar 3.2
  46. Newtek Lightwave 7.5
  47. Cinema 4D XL 8.1
  48. Seti@home 3.03
  49. 3D Studio Max 5.1
  50. Mathematica 5
  51. PC Mark 2002 Pro
  52. SiSoft Sandra Max 3
  53. Heat Protection: Now From AMD, Too
  54. Summary: The P4 3.2 EE Wins 32 Times, The Athlon 64 FX-51 15 Times - An Uncertain 64 Bit Future For AMD
  55. Summary: An Uncertain 64 Bit Future For AMD, Continued
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