:hi:
Competitor AMD/ATI is also throwing more and more DirectX 11 products on the market while Intel – still unable to offer any DirectX 11 products – can only stand and watch. Apple, according to talks at CeBIT, also plans to get on the DirectX 11 train, with its iMacs, or, rather, on the ATI Radeon 5750 train – the Windows DirectX 11 features don’t much matter with a Mac OS. Anyway, there is OpenCL, in the development of which Apple played a significant part. Unlike last year, Apple kept a low key during the run-up to CeBIT and didn’t surprise with news from far-away California about new Mac-Pro workstations equipped with unreleased Intel Xeon processors. Like Dell, HP and others, Apple is going to behave well and present the upgrade to the 6-core Westmere-EP in due time this year. This upgrade will be rather easy as no new systems are required: the new Westmere-EP processor is socket compatible to its predecessor, the 4-core Nehalem-EP.
The special feature of its integrated memory (NUMA) will most likely continue to be ignored by Apple’s operating system Snow Leopard, which means that about 20 percent or more of the memory performance is wasted. SPEC CPU2006 benchmark results are accordingly poor until now.
http://www.top500.org/blog/2010/03/15/about_recovering_and_upgrading