• Source: AMD K9

The AMD K9 represents a microarchitecture by AMD designed to replace the K8 processors, featuring dual-core processing.




Development


K9 appears originally to have been an ambitious 8 issue per clock cycle core redesign of the K7 or the K8 processor core. At one point, K9 was the Greyhound project at AMD, and was worked on by the K7 design team beginning in early 2001, with tape-out revision A0 scheduled for 2003. The L1 instruction cache was said to hold decoded instructions, essentially the same as Intel's trace cache.
The existence of a massively parallel CPU design concept for heavily multi threaded applications has also been revealed, as a planned successor to K8. This was reportedly canceled in the conceptualization phase, after about 6 months' work.
At one time K9 was the internal codename for the dual-core AMD64 processors as the brand Athlon 64 X2; however, AMD has distanced itself from the old K series naming convention, and now seeks to talk about a portfolio of products tailored to different markets.




References

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• AMD K9
• K9
• List of AMD CPU microarchitectures
• AMD K8
• Athlon 64 X2
• AMD 10h
• Zen+
• Zen (first generation)
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