New info on IBM's Power5 chip (G5's)

phreemind writes "There's some news out today on IBM's Power5, which should make an appearance next year. Interestingly, from the sound of this article, they've put a lot of work into power consumption on this processor so that it can go in anything from blades to big iron. This may preclude the need for a specialized low-heat/power version, such as the 970, for anything other than laptops. Oh, yeah, and they hope to use it to wipe Itanium off the map. Check out the article at InfoWorld."

Comments

Article title mixes up chip manufacturers

[Andy_R]

The G5 is the long overdue Motorola successor to the G4.
The Power5 is the successor to IBM's Power4.

While the architectures are closely related, the Power4 and G4 are distictly different chips, and the Power5 and G5 will be too.

Re:Article title mixes up chip manufacturers

[OppressiveGiant]

Actually, I believe IBM does produce a large amount of the G4s. They were making the copper G4s. They also produced a large quantity of the G3s. So they have the manufacturer correct, sort of. However they person who wrote the title may be indeed a little confused. I suppose this could mean that the G5 isn't fair away though.

Re:Article title mixes up chip manufacturers

[cheezfreek]

Actually, I believe IBM does produce a large amount of the G4s. They were making the copper G4s. They also produced a large quantity of the G3s. So they have the manufacturer correct, sort of.

Yes, IBM manufactured some of the G3s and G4s under contract, but they didn't design them. For the Power series of chips, it's all IBM, from the design to the manufacturing, so the G5 and the Power5 will be largely unrelated (aside from the basic underlying PPC architecture).

I suppose this could mean that the G5 isn't fair away though.

Just because IBM is making the Power5 soon doesn't mean that Motorola is making the G5 soon. They're two different companies with very different design methodologies. If Motorola releases the G5 soon, I'll be surprised. After all, who will their customers for the G5 be? Not Apple, if we believe the rumours.

Re:Article title mixes up chip manufacturers

[Matthias Wiesmann]

I suppose this could mean that the G5 isn't fair away though.

Well I don't know if the G5 is not far away, but I'ma sure a G5 is not far away. A Gx is not really a product name or a processor model, it refers to a generation number.

• The G1 was the 601, it was basically a scaled down POWER chip with still some POWER instructions.
• The G2 were the 6xx series: 603, 604, 604e.
• The G3 are the 7xx series: 740, 745, 750. This would also, I suppose, include the Flipper processor of Gamecubes.
• The G4 are the 7xxx series: 7410, 7441, 7445, 7451, 7455.
• The G5 looks like it will be the 9xx series: 970.

As to what makes a generation change, its not very clear. From G1 to G2, there was a change in the MMU and caching structure and the removal from POWER instructions. From G2 to G3, I think the wiring changed. The only difference between G3 and G4 is Altivec. The difference between G4 and G5 will probably be numerous: 64 bits (albeit the PPC 620 already was 64 bits) and different interconnect. (Somebody correct me if I'm wrong).

Re:Article title mixes up chip manufacturers

[dbrutus]

I'm guessing the marketing droids over at Apple will call the 970 something like a G4-64 (rolls off the tongue, doesn't it) and sometime in 2004-2005 roll out Power5 systems under the G5 moniker. Hopefully, at some point, Motorola will get its act together and get back into AIM with both feet but I'm guessing it'll take an Apple marketshare in the 6-10% range.

Re:Article title mixes up chip manufacturers

[wzm]

Sun released 68000-68030 based machines, usually VME based. I know Sun didn't release a 68040 machine, but they built their name on the Sun 1/2/3 architechtures, and SunOS. None of that was SPARC based, it was Motorola 68k based. It is only with the Sun 4 SPARC designs that Sun moved away from that.