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How CPU Features Affect CPU Performance, Part 5

Intel Core i7, number of cores.

November 23, 2009

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Without Turbo Boost and Hyper-Threading

We are pleased to see no usual slump with three cores in the compile test: if it had been constant, we could have blamed it on incorrect tests.

With Turbo Boost and Hyper-Threading

On the other hand, TB and HT with six cores significantly slow the growth rate down.

Compared to AMD Phenom II X4

It's another group of tests, where Core i7 and Phenom II X4 have practically identical scalability.

Audio encoding

Without Turbo Boost and Hyper-Threading

With Turbo Boost and Hyper-Threading

The three-core slump in the audio encoding group is not to be seen in both cases.

Compared to AMD Phenom II X4

Hence the decent result, the new processor from Intel goes on a par with Phenom II X4 in scalability (you must agree that we already got used to frequent defeats of Core i7).

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