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Print 65 comment(s) - last by saratoga.. on Apr 28 at 12:51 AM

June 6, 2006 didn't fit AMD's schedule

We just got official confirmation from motherboard and chipset manufacturers in Taiwan -- AMD has moved the official launch date of Athlon 64 DDR2 up two weeks to May 23, 2006. AMD roadmaps have previously put the AM2 launch at June 6, 2006 (during Computex 2006), but since motherboards and CPUs are already completed, the launch will be pushed up. AMD insiders tell us Conroe's launch date was also a factor in pushing the AM2 launch date up, though even we do not know the exact date Intel's Conroe will launch.

AMD's latest advisories claimed the following:
  • May 16, 2006: Global announcement of Energy Efficient Processor roadmap and pricing
  • May 23, 2006: Global announcement of Socket AM2 and new desktop product availability and pricing
  • May 31, 2006: Global announcement of AMD LIVE! desktop system availability


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RE: What about speculative execution?
By saratoga on 4/19/2006 4:40:11 PM , Rating: 2
The problem with such a scheme is that it massively increases power consumption, and by way more then you gain in performance (since at best you're just going to avoid the occasional branch mispredict but effectively double power consumption to do it). And at this point, performance is mostly limited by power consumption, so it doesn't pay off.

You'd do better with a wider core, or a deeper pipeline if you have that kind of power to throw away.


RE: What about speculative execution?
By glennpratt on 4/20/2006 6:08:30 PM , Rating: 2
The other core is already there! You think they are adding another core, just to strap this on it?


By saratoga on 4/28/2006 12:44:14 AM , Rating: 2
Think this through. The other core is added at the expense of clock speed to accelerate multithreaded loads. Speculative execution improves single threaded performance but requires a second core to not be used for a second thread. It also doesn't improve it as much as just not having a second core and upping clock speed would.

So whats the point? Help out people who bought a dual core chip even though they shouldn't have? Intel has the right idea here: keep power as low as possible and use that to RAMP UP THE CLOCK.


“So far we have not seen a single Android device that does not infringe on our patents." -- Microsoft General Counsel Brad Smith

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