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[computer world] AMD's roadmap burns through Intel's fog

post #1 of 36
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Quote:
Intel CEO Paul Otellini's memorable "shame on us... mea culpa, we screwed up" March 2007 speech to Morgan Stanley investors came after his company's marketing fog machine could no longer conceal the truth that, depending on your point of view, Intel was peddling technology that it knew to be somewhere between four and eight years behind AMD's. AMD told you so, and so did I, but Intel's marketing is capable of overpowering reason. Intel manages to thrive by setting expectations that match its technology, and raising those expectations every two years by just enough to make you see your Intel-based PC or server as wanting. Otellini got stuck apologising because AMD got a chance to show buyers Opteron's potential. The market's expectations followed, as they naturally will when people buy technology that never needs replacing. Given the choice between buying well and buying often, the market chose the former.
Intel's smokescreen is back in overdrive. Those who do a light amount of homework before buying are getting Intel's same old message: Higher clock speeds, bigger cache, manufacturing process shrink and faster front-side bus make the world go 'round. That latest speed bump makes your one-year-old computer look pretty sad (on paper). And when Intel goes "tock", it's rip and replace time to get those extra cores and the broader bus. Intel put the cherry on top by getting everyone worked up over CPU power draw to the exclusion of total system power draw. Intel sets the market's agenda. It tells buyers what matters.
AMD designs technology that will enable the workloads that you'll be running in two or three years. It strikes many as improbable when I tell them that AMD-based hardware, servers in particular, get faster over time as operating systems and application developers start unlocking the potential of the platform. When I say this, I may not take enough care to point out that AMD is committed to raising that potential between major revisions of its CPUs and whole system platforms. Intel can't catch up because AMD presents a moving target with meaningful point enhancements between major architecture revisions. AMD ticks and tocks as well, but it's the market that swings AMD's pendulum.
AMD is getting bolder about letting the market, in this case, IT, know that even through the gathering fog, AMD has a clear picture of what matters most to system buyers. You don't hear much about it these days, but price/performance matters. AMD's record-making results with Quad-Core Opteron on SPECweb2005 sets a realistic bar for server performance, a record that, notably, Intel misses by a hair. But Quad-Core Opteron comes in 41% lower in cost than quad-core Intel Xeon in two-socket servers. AMD servers cost less to build. Whether these savings will be passed on to you as a lower total system price is up to the OEM and its tendency to maintain artificial price parity between its similar Intel and AMD offerings. Not that I'm suggesting there's any pressure to do that.
AMD's not handing performance per watt to Intel. AMD's published benchmarks show quad-core AMD systems skunking Intel Core 2 Xeon on floating point synthetic benchmarks, by margins of 13%-50%, but quad-core Opteron lags Core 2 Xeon's integer performance by an impressive margin. Intel's butt-kicking compiler scored quad-core Xeon an earnest 20% lead over Quad-Core Opteron on SPECint_rate2006 (peak). The best AMD-targeted compiler from Portland Group couldn't close the gap. But interestingly, when the playing field was levelled a bit by using the gcc open source compilers, AMD pulled to within 9% of Core 2 Xeon on SPECint_rate2006 (base). The likelihood that you'll encounter architecture-optimised applications in the wild is mighty slim, but AMD gets candour points for showing this shortcoming of its own making. If AMD cares about closing the integer benchmark gap, AMD needs to contribute benchmark-winning optimisations to GNU.
AMD counters the gearhead-level speeds and feeds derived from synthetic benchmarks with IT-relevant load metrics. In web transactions, virtualisation and parallel workloads, Quad-Core Opteron outperforms quad-core Xeon by margins of 9%-16%. But there's a point worth noting: AMD scored these wins with a 2.3GHz CPU and 2MB of Level 3 cache. Intel lost out to AMD with quad-core Xeon CPUs running at 2.83GHz with 12MB of cache. The configuration differences between the two architectures give AMD what you call headroom. AMD is holding manufacturing process shrink, CPU clock speed, bigger cache and additional cores as cards to play on IT's behalf when the time is right.
The time is right. Later this year, AMD will roll out "Shanghai", a Quad-Core Opteron built on a new 45 nanometer process, matching Intel's in scale while using a simpler method. Shanghai raises the ceiling on CPU clock speed to a level that AMD didn't disclose, and lowers power at idle by 20%. That's a ridiculous metric for a two-socket server, but in an eight-socket server, the likelihood that a socket will be idle is higher. AMD surprised me by borrowing a page from Intel's playbook, doubling its Level 3 CPU cache to 6MB. That will make a serious difference in the performance of applications optimised for Intel CPUs.
I was particularly struck by AMD's claim that Shanghai would deliver 25% faster times for world switch (switching from one guest OS instance to another) than the present Quad-Core Opteron. This, combined with a 10% boost in memory bandwidth, will give AMD a leg up in virtualisation.
Shanghai marks the server debut of the coherent HyperTransport 3 (cHT3) bus. cHT3 is faster and more scalable than the HyperTransport 1 bus implemented in present Quad-Core Opteron servers, which probably contributes to reduced world switch time and increased memory bandwidth, both measures that are sensitive to the speed of the interconnects among CPUs.
The Shanghai CPU, which AMD projects will be available this year, will be a drop-in replacement for Quad-Core Opteron. Given where the economy is likely to be when Shanghai shows up, chip swap-upgradeable servers are a really smart investment.
I've saved the best part for last. If AMD hewed to Intel's "tick tock" strategy, which dictates a substantial architecture revision (tock) every other year, then with Shanghai, 2008 will certainly go down as an AMD "tock". In 2009, an architecture revision code-named "Istanbul" will carry AMD's 45 nanometer Opteron to six cores. In 2010, AMD will knock Intel's tocks off: A 12-core large scale enterprise CPU named "Magny-Cours" is slated for the first half of that year, and will deliver on AMD's big iron availability and reliability strategy. A six-core edition of this CPU, "Sao Paolo", will roll out at the same time.
AMD is always cautious about projecting too far ahead, fearing that system buyers might suspect Intel-like obsolescence by design. AMD is smart to come out swinging by laying out present and future technology despite the risk, but amid the excitement over architectures to come, the value of AMD's long-term commitment to buyers can't be set aside. The Quad-Core Opteron server you buy today will upgrade to six-core, and even when 2010 comes around, 2008's Quad-Core Opteron servers will remain state of the art relative to Intel. New systems based on that platform will still be sold, and parts will remain plentiful. Isn't it nice to see clearly again?
http://computerworld.co.nz/news.nsf/...257458007A61C9
post #2 of 36
I'm-shocked.

Also H2V (because you have PMs disabled) your signature is way way too long. The limit is 12 lines i believe (maybe 10, i need to go check on that.)
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post #3 of 36
wow, that was an interesting read.


Quote:
Originally Posted by Licht View Post
I'm-shocked.

Also H2V (because you have PMs disabled) your signature is way way too long. The limit is 12 lines i believe (maybe 10, i need to go check on that.)
Actually I think it's 8 lines.
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post #4 of 36
Quote:
Originally Posted by GuardianOdin View Post
Actually I think it's 8 lines.
I'll go check, i can't believe i managed to forget it.

Quote:
Originally Posted by OCN TOS, General Membership
You may NOT:
...
Have a signature that exceeds 8 lines in length, or use larger than # 3 font in signatures.
http://www.overclock.net/view.php?pg=rulestos
Edited by Licht - 6/1/08 at 5:30pm
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post #5 of 36
but this doesnt apply to desktop processors right? or if it does what does it mean?
post #6 of 36
Interseting, Now I need a Socket F board and two of these opterons.. hehe
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post #7 of 36
Quote:
Originally Posted by Aden Florian View Post
but this doesnt apply to desktop processors right? or if it does what does it mean?
This article is primarily about the server processors only, which is an area that AMD is still fairly competitive in for servers with more than 1 or 2 sockets. The new Shanghai server chips that the article mentions, however, will surely bring some benefits to their desktop counterparts in the form of 45nm, IPC improvements, and bigger L3 cache.
post #8 of 36
Quote:
Originally Posted by Kamikaze127 View Post
Interseting, Now I need a Socket F board and two of these opterons.. hehe
I would love to see a desktop counterpart to their servers. The 4x4 system was a nice idea,but support for all but disappeared.

Dual CPU Mobo with support for crossfire with be nice. I doubt we ever see that that.
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post #9 of 36
If this is written for anything other than server processors then it's a load of crap.
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post #10 of 36
Quote:
Originally Posted by stargate125645 View Post
If this is written for anything other than server processors then it's a load of crap.
Why's that?
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