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Please read:Second-hand product.Due to the production process, the surface of the product is not complete smooth and may be accompanied by scratches.CPU Processor Intel Core i7-4790K specificationsTypeCPU / MicroprocessorMarket segmentDesktopFamilyCPU Processor Intel Core i7Model number?i7-4790KCPU part numbersCM8064601710501is an OEM/tray microprocessorBX80646I74790Kis a boxed processor with fan and heatsink (English version)BXC80646I74790Kis a boxed processor with fan and heatsink (Chinese version)BXF80646I74790Kis a boxed processor without fan and heatsinkFrequency?4000 MHzMaximum turbo frequency4200 MHz (4 cores)4300 MHz (3 cores)4400 MHz (1 or 2 cores)Bus speed?5 GT/s DMIClock multiplier?40Package1150-land Flip-Chip Land Grid ArraySocketSocket 1150 / H3 / LGA1150Size1.48" x 1.48" / 3.75cm x 3.75cmS-spec numbersPart numberES/QS processorsProduction processorsQG81SR219BX80646I74790K+ BXC80646I74790K+ BXF80646I74790K+ CM8064601710501+ Unknown+ Architecture / MicroarchitectureMicroarchitectureHaswellProcessor core?Devil's CanyonCore stepping?C0 (QG81, SR219)CPUID306C3 (QG81)Manufacturing process0.022 micronData width64 bitThe number of CPU cores4 The number of threads8 Floating Point UnitIntegratedLevel 1 cache size?4 x 32 KB 8-way set associative instruction caches4 x 32 KB 8-way set associative data cachesLevel 2 cache size?4 x 256 KB 8-way set associative cachesLevel 3 cache size8 MB 16-way set associative shared cachePhysical memory32 GBMultiprocessingUniprocessorExtensions and TechnologiesMMX instructionsSSE / Streaming SIMD ExtensionsSSE2 / Streaming S