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John Carmack talks up AMD CPUs in annual QuakeCon keynote

post #1 of 6
Thread Starter 
Quote:
The two major consoles are very, very similar. There are of course differences between the two, but the basis for the two are very much the same. As we well know, the two consoles feature APUs designed by AMD and share a lot of similarities. The Sony hardware is a bit more robust and has more memory bandwidth, but when all is said and done, the similarities outweigh the differences by a large margin. John mentioned that this was very good for AMD, as they are still in second place in terms of performance from current architectures as compared to Intel and their world class process technology.

...

There are other advantages for AMD with their domination of next generation consoles, and it will come in the form of software optimizations for AMD's CPU architectures. These console APUs are not entirely HSA compliant, but they do implement some shared memory advantages. Over time, we will see a lot of the gaming software (and physics) become more optimized for AMD which will improve their position in gaming circles.

http://www.pcper.com/reviews/Editorial/John-Carmack-Keynote-Quakecon-2013

Not something we didn't expect ,but it's good to hear someone as knowledgeable as Carmack say so. thumb.gif

Though the question that I don't know the answer to is, do optimization wins for those customized Jaguar based CPUs translate to Piledriver and/or Steamroller CPUs?
post #2 of 6
Thread Starter 
Here's a link to the full 2.5 hour talk:

http://www.twitch.tv/bethesda/b/439369577

Carmack starts at about the 15 minute mark.
post #3 of 6
This may seem unrealistic now, but sometime during the lifecycle of these consoles AMD will release a desktop/mobile APU with at least as much power as these console chips. Looking forward to it! thumb.gif
post #4 of 6
The actual quote in full directly from carmack:
Quote:
And that will give AMD a little bit of a boost, relative to intel, clock for clock, probably. I mean you'll optimize the code for one microarchitecture and that will probably become somewhat prevalent on the PC... Intel still has significant enough performance lead that I don't think they'll outstrip them in raw performance but it'll help close the gap and makes it useful when you're comparing price/performance and some of the other things there...

And that's about what every sensible argument about this has been so far. Games that utilize more cores are going to become more common, but the difference isn't enough to make AMD catch up to intel.

You'd need a wizard to make a game parallel enough to use all the cores to the max all the time (which would be needed for AMD to pass intel chips in the same price range by 10-15% when it comes to gaming). And if Carmack doesn't think he's a good enough wizard for that then I don't know who is.
 
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post #5 of 6
Thread Starter 
Still nice to see anyone publicly worrying about AMD performance. biggrin.gif



Bulldozer & Piledriver performance of Crysis 3 hints at maybe what are the fruits of the new focus on AMD core optimization. An engine, I would assumed is optimized at least in part for next gen AMD consoles, shows Bulldozer & Piledriver CPUs with decent performance increases over the older generation Deneb.

But that's just speculation. Maybe Crysis 3 simply does a lot of integer based math across many of the cores.
Edited by Castaa - 8/2/13 at 9:34pm
post #6 of 6
Quote:
Originally Posted by Castaa View Post

Though the question that I don't know the answer to is, do optimization wins for those customized Jaguar based CPUs translate to Piledriver and/or Steamroller CPUs?
The actual architecture isn't as important as the multi-threading of the software in question. Xbox One and PS4 games are going to be written to take advantage of an eight-core CPU as much as possible. This will be to the benefit of any CPU with a lot of cores, especially 8xxx series FX processors, and to a lesser extent, Intel i7 quads with HT, and even AMD six-core Thubans and 6xxx series FX.

That doesn't mean that it will automatically catch AMD up to Intel, though. AMD still needs to make significant improvements in per-core performance to catch up to Intel. Also bear in mind that as software does become more and more multi-threaded, Intel can easily move six and eight-core CPUs down into the mainstream market itself. AMD has to continue to improve IPC.
     
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