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Intel Sandy Bridge Core i5 2500K and Core i7 2600K review

by Tarinder Sandhu on 7 January 2011, 17:13 4.5

Tags: Intel (NASDAQ:INTC)

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Giving the cores a workout - multithreaded goodness

The TrueCrypt benchmark results are an average of the encryption and decryption speeds, over eight algorithms, when using a 100MB buffer. The Intel chips with AES technology - read 32nm processors - do better than their older brethren, and this is why the 2500/2600K are so much faster than the Lynnfield-based Core chips.

Now using all available cores, we see the first major difference between the 2500K and 2600K. Hyperthreading support on the 2600K propels its performance to second place, though some way behind the six-core, 12-thread 980X.

Again, the 2600K's eight-thread-crunching ability shines in wPrime, beating out AMD's best and putting over 100 seconds in to the four-core, four-threaded 2500K.

Our AMD Phenom II X6 1100T review showed that it was only bested by the Ā£700-plus 980X. Now, though, the 2600K jumps ahead.

Here's a turn-up. The QuickSync segment of Sandy Bridge becomes active once on an H-series chipset. Converting a 475MB, 1080p MPG clip into iPad-friendly mp4. The results speak for themselves, blowing everything else out of the water.