It didn’t take long before the presentation that was accidentally leaked by Sun spread across the news sites. Most of the slides contains old information,, but then you get to the good stuff near the end of the presentation; the estimated performance of Intel’s upcoming Nehalem architecture, along with what Intel expects from AMD’s 45nm Shanghai architecture. When it comes to Shanghai, Intel expects it to put up a good fight, if you compare it to the Core architecture. Intel expects Nehalem to reign supreme. The estimated performance is measured in CPUfp_rate_base2006 and CPUint_rate_base2006, both in which Nehalem is expected to outperform Shanghai by 35-40%.
The data leaked focuses on dual-socket systems and compares both dual- and quad-core systems. When comparing the current high-end chips Intel Xeon X5482 with the upcoming Nehalem, there is a 100% improvement in floating point performance, while integer is up 45%.
If you study the charts more closely, beyond the excelling Intel data, we see that Intel expect Shanghai performance to be up to 35-50% better, when comparing a dual-socket system with 2.3 GHz Barcelona with two 2.8GHz Shanghai processors. Not astonishing but certainly an improvement for AMD if it would turn out to be true.
Computerbase.de has compiled some convenient charts where you can easily compare the systems mentioned above.
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