Synthetic and Memory Tests
The latest edition of SiSoft Sandra continues on the tradition of testing the purely synthetic power of the processors to see how much performance software developers might be able to pull out of them. 

Intel Core 2 Extreme QX9650 Yorkfield Processor Review - Processors 51

Intel Core 2 Extreme QX9650 Yorkfield Processor Review - Processors 52

Both of our quad-core processors, the QX9650 and the QX6850, have dramatic performance leads over the dual-core processors as you would expect.  What is really interesting is that the QX9650 is able to get MORE than 200% improvement compared to the dual-core 2.93 GHz X6800 CPU – up to 249%!  The benefits of the 1333 MHz FSB, extra L2 cache and other extras are obviously creating this difference.  Even when looking at just the two quad-core CPUs that run at the same FSB and clock speeds, the new Yorkfield has an 11% advantage when looking only at the floating point test.

Intel Core 2 Extreme QX9650 Yorkfield Processor Review - Processors 53

The multimedia test shows very similar results as the basic arithmetic test does as the Yorkfield out performs the 65nm quad-core by 22% thanks to the SSE4 instruction improvements.

Intel Core 2 Extreme QX9650 Yorkfield Processor Review - Processors 54

Memory scores have always been AMD’s saving grace as their integrated memory controller continues to give them an advantage over Intel’s northbridge based controllers.  No surprises here then that both the 5600+ and the 6000+ are able to trample over Intel’s scores.

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