Intel Core i7, Core i5 CPU details leaked?

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Sources in the Taiwanese motherboard industry have let slip a few details regarding Intel’s upcoming line of Core i5 and Core i7 CPUs.  According to HKEPC, the new processors will be the first to use Intel’s new socket, the LGA1156. It’s unfortunate that Intel is switching sockets already, not even a year after the introduction of their LGA1366 CPU socket and Core i7 processors.  Fortunately, LGA1366 will be sticking around as a performance, enthusiast and server platform, while LGA1156 will go more mainstream.  Along with the change in sockets comes a drop from triple- to dual-channel memory; in addition to being cheaper, the performance gained by moving to a third channel of memory hardly outweighs the extensive extra cost.

Core i5-750 Core i7-860 Core i7-870 Core i5-750s Core i7-860s
Clock speed 2.66GHz 2.8GHz 2.93GHz 2.4GHz 2.53GHz
Cache  8MB L3
Hyperthreading NO YES NO YES
Maximum turbo boost 3.2GHz 3.46GHz 3.6GHz 3.2GHz 3.46GHz
VT-x instructions YES
VT-d instructions NO YES NO YES
Thermal envelope 95W 82W
Socket LGA1156
Rumored launch date September 6th, 2009 Q1 2010
Price (for 1000 units) $196 $284 $562 $259 $337

If these specifications are accurate, Intel may have some trouble selling the Core i7-870.  It seems like a bit of an odd man, since it offers only a .13GHz boost in clock speed while keep other specs the same, save for the 200% jump in price.  We’ll find out sometime in September, when the first of the new socket CPUs are expected to launch.  Some of Intel’s low-power variants, as desginated by the S moniker they picked up during their last round of Core 2 Quad releases, are expected to drop sometime in the first three months of next year.  What’s interesting about those two is they are listed as having the same Turbo Boost frequencies as their higher-power siblings; assuming it’s correct, it probably means that Intel just underclocked the same chips slightly even though their full capacity remains unchanged.



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