posted by Anton Andreev on Mon 28th Mar 2005 09:38 UTC
IconThe following article summarizes my experience with AMD64 and Fedora Core x86-64 in desktop systems. In a few years all new computers will be 64 bit. Microsoft and Intel are positive about the 64 bit direction, and Linux seems to be ahead of Wintel for now.

Note: The author is not a native english speaker, please excuse any awkward syntax.


The AMD64 is a good CPU. People use them for compilation and cryptography. Their main advantage is not the fact that they can address more memory (as many authors claim). Actually some desktop AMD 64 motherboards use up to 2/3GB of memory. The advantages are:

Feature Benefit
More CPU registers performance
Built in memory controller performance
L2 cache optimizations performance
Cool and Quiet lower voltage and lower noise
Stack execution protection security

My personal hardware configuration is as follows:

  • AMD 64 3200+ 2.2 GHz, 512 L2 cache, Newcastle,socket 754, boxed fan
  • Asus K8N E nForce3 motherboard
  • 80GB SATA Seagate Barracuda, 8 MB cache
  • NVIDIA GeForce 2 64 MB/GeCube ATI Radeon 9550GU-C3 128MB
  • 512 Kingston RAM

64 bit systems generally require more memory, but I think 512 RAM had been enough for me.

Fedora x86_64:

Fedora was one of the first Linux distributions that made an AMD64 version. Assume everywhere you see Fedora that I mean Fedora 3 X86_64. Fedora seems stable, keeping in mind the new AMD 64 achitecture. I had no problems concerning reliability - no sudden crashes. I think that the binaries are well optimized as there are no such differences as i386, i586, i686. Also exploits for 32 bit Linux won't on work on 64 bit Linux.

Useful Fedora links:

Cool and Quiet:

The powernow-k8 cpufreq driver is activated by default in the latest Linux kernels, but requires a recompile in olders ones. In the kernel it is called CONFIG_X86_POWERNOW_K8. Note that you must first activate this feature in yout bios before using it. The CPU runs at 1GHZ usually and this is good as this is enough for everyday work and when the computer is idle. This feature has distinct advantages when you sleep in the same room and keep your computer running. The clock frequency goes up if you need more speed. See /proc/cpuinfo to check the CPU frequency. I used lm_sensors to monitor my CPU and motherboard temperatures. They were in the range of 33-34C(91.4-93.2F) when just browsing or doing nothing, which is quite satisfactory.

Table of contents
  1. "Fedora 64bit, Page 1/3"
  2. "Fedora 64bit, Page 2/3"
  3. "Fedora 64bit, Page 3/3"
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