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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: reverse hyperthreading?
By Spoonbender on 4/19/2006 8:13:26 AM , Rating: 2
Sounds like nonsense to me. It's like trying to drive two cars at once to go faster, rather than just make a bigger, faster engine.

*If*, and this is a big if, AMD and Intel has struggled with it for a decade or more, they can extract more parallelism from x86-based programs than ~3 instructions per cycle, the cheap, efficient, easy and simple way of taking advantage of this is to make a wider core. Just like Intel is doing with Conroe, but even here, they're only widening it from 3 to 4, and they don't expect all 4 ports to be fully utilized even.

The difficult, inefficient, slow, expensive and wasteful method is to force two cores to execute the same thread "in parallel". So called "reverse hyperthreading".
Sounds like something an AMD fanboy came up with because everyone knows Intel = evil, so anything they do is bad, and so if AMD does the "reverse", they'll do good.
Just a shame it doesn't make sense.


RE: reverse hyperthreading?
By hstewarth on 4/19/2006 9:23:44 AM , Rating: 1
It does sound like something that a Fanboy would come up with. In a lot of ways Hyperthreading is the early form of Dual Core.

This reverse hyperthreading if possible sounds more like joining of ALU's between two cores as one.

In time the best solution for performance is for soft developers ( especially game developers ) to designed their code more multi-threaded. It sounds like Oblivion is such a game that is more multi-threaded.

On the AM2, I think the pre-views have be so-so so far and not very impressive. I thinking AMD desiring to launch it early because they know when the Conroe comes out things will seriously change. So if they can get some buyers before the Conroe, it would mean more money for them.

Just my opinion..


RE: reverse hyperthreading?
By ZmaxDP on 4/19/2006 7:16:12 PM , Rating: 2
Not to knock the criticism, but "drive[ing] two cars at once to go faster, rather than just make a bigger, faster engine" isn't that crazy. Ever heard of drafting? Also, there are some concept cars with multiple engines in one car.

According to your analogy, a car is a logical core. An engine is a physical core.

Dual Core = Two cars with one engine each.
Single Core = One car, one engine.
New Thing = One car, two engines (or the two cars, two engines welded together at the bumpers.)

Like someone noted earlier, if they can gain 15% speed increase (or 15% efficiency increase) by "reducing the air friction" and "reducing weight" then they have made up for Conroe's gains on single threaded apps. (Obviously, two engines one car is ideal here)

To me it seems as if the trick is going to be finding a way to make it run both ways depending on the application demands.


RE: reverse hyperthreading?
By Steve Guilliot on 4/25/2006 12:55:59 PM , Rating: 2
There's no point in trying to hyper-analyze an analogy that doesn't apply.


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