On: $2,999 Mac Pro to go on sale in December

[wmf]

No.

http://ark.intel.com/products/75779/Intel-Xeon-Processor-E5-... max turbo 3.9 GHz

http://ark.intel.com/products/75780/Intel-Xeon-Processor-E5-... max turbo 3.9 GHz

[nsxwolf → wmf]

So, what does that mean exactly? When are they not running in turbo? The 4 core is clocked higher in non-turbo, that makes no difference?

[wtallis → nsxwolf]

Turbo modes are opportunistic based on temperature and short-term power draw, so you can't be 100% definite about the speed the processor will run at. But generally speaking, when that 6-core processor is only running 4 threads, it will turbo up to the same speed that the 4-core operates at fully loaded, and they'll both hit the same peak for a single-threaded workload.