Caporegime
- Joined
- 9 Nov 2009
- Posts
- 25,806
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- Planet Earth
Holy wall of text. BD was wrong for the desktop from the get go. AMD bet on parallelism, which hasn't materialised, yet...
The thing is though,unlike Intel AMD essential shares the same CPUs for both server and desktop,which Intel does not,so they are compromise. Companies like IBM and Sun Microsystems make CPUs which are decent at throughput but have weaker single thread performance,probably worse than what AMD has ATM. The thing is though the BD derived cores have their issues,the whole architecture seems more modular than the previous ones,and AMD probably might even use more automated design tools than Intel(not surprising as Intel has 9 to 10 times the number of personal),but OTH we are starting to see much quicker updates and refreshes than with the Phenom and Phenom II. Even the console wins are probably down to how much easier the architecture can be tailored for different uses,ie,the whole SOC thing AMD was going on about a while back.
Intel might be able to optimise designs better than AMD,but they have the personal and can spend more,and this is allowed by the fact they simply produce more CPUs to spread out the costs. So AMD is limited by costs. You might have the best CPU in the world but if R and D costs are too high you will never make the sunk costs if you are a smaller company.
Regarding BD and its derivatives,the focus on integer performance, and not FP performance does indicate an architecture which probably is more suited to having FP operations done by a graphics card,which is funnily what you find in a lot of supercomputers.
This is why Kaveri will be important as both the CPU and IGP share the same memory space, and why HSA Foundation is important,so that the relevant tools can developed and used. The thing is I can see just like with 64 bit extensions for the consumer market,integrated memory controllers,etc, I expect AMD will be the first to do this.
However,Intel just has more money to spend,so I can see them catching up at some point and better implementing the ideas AMD has!!

It seems completely insane to me that a small core low power mobile chip like Bobcat can have 85% of Bulldozers IPC, i don't know what to make of that... (thats how good Bobcat is, or, thats how bad Bulldozer is) probably a bit of both.
The thing is though,Jaguar might not scale well to higher clockspeeds.
Intel had the same issue with the P3. The P3 could not simply scale high enough in clockspeed, and only after many years and newer process technology did we get the Core and Core2 CPUs which are evolved from them. Hence they made the P4.
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