AMD K9

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

This article is about the AMD internal project for dual-core processor microarchitecture. For actual dual-core processor products, see Athlon 64 X2. For other uses, see K9.
K9
General Info
Common manufacturer(s)
Architecture and classification
Instruction setAMD64 (x86-64)
History
PredecessorK8 - Hammer
Successornone

Development

K9 appears originally to have been an ambitious 8 issue per clock cycle core redesign of the K7 or the K8 processor core.[1] 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.[2]

At one time K9 was the internal codename for the dual-core AMD64 processors as the brand Athlon 64 X2;[3][4] 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.[5]

gollark: ++exec -L c-gcc```cint main(int apiohazard, char* *apioform) { char buf[1024]; printf("out: %s", buf); return 0;}```
gollark: Um.
gollark: ++exec -L c-gcc```cint main(int apiohazard, char* *apioform) { char buf[1024]; printf("out: %s", buf); return 3333;}```
gollark: Did it just print *nothing*?
gollark: Okay, that... broke?

References
  1. The Inquirer report, 3 November 2005 Archived September 6, 2007, at the Wayback Machine
  2. www.anandtech.com/show/2229/5, Anandtech.com, 2007-05-11, p. 5, retrieved 2012-01-23
  3. The Inquirer report, 6 February 2007 Archived February 10, 2007, at the Wayback Machine
  4. Video interview of Giuseppe Amato (AMD's Technical Director, Sales and Marketing EMEA) done in February 2007 Archived March 13, 2007, at the Wayback Machine
  5. AMD hatches new naming plan for chip generations, news.cnet.com, 2004-11-15, retrieved 2012-01-23
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