Intel Core i7-7700K vs Intel Xeon E5649

Physical Specifications

Socket Intel Socket 1151 Intel Socket 1366
Foundry Intel Intel
Process size 14 nm 32 nm
Transistors unknown 1,170 million
Die size unknown 239 mm²
Package FC-LGA1151 FC-LGA10
tCaseMax 72°C


Frequency 4.2 GHz 2.533 GHz
Turbo clock up to 4.5 GHz up to 2.8 GHz
Base clock 100 MHz 133 MHz
Multiplier 42.0x 19.0x
Multiplier unlocked Yes No
TDP 91 W 80 W
Voltage 1.35 V

Architecture Details

Vertical Segment Desktop Server/Workstation
Production status Active End-of-life
Release date Jan 3rd, 2017 Feb 14th, 2011
Codename Kaby Lake Westmere-EP
Generation Core i7 Xeon
Part SR33A SLBZ8
Memory support DDR4-2400 MHz Dual-channel DDR3 Triple-channel
ECC memory No Yes
PCI Express Gen 3, 16 Lanes(CPU only) Gen 2


Total Cores 4 6
Total Threads 8 12
SMP # CPUs 1 2
Integrated graphics HD 630


Cache L1 64K (per core) 64K (per core)
Cache L2 256K (per core) 256K (per core)
Cache L3 8MB (shared) 12MB (shared)


Notes This processor comes with an unlocked BCLK multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking.

Features & Technologies

5.86GT/s QPI Yes
AES-NI Yes Yes
AVX2 Yes
BMI1 Yes
BMI2 Yes
Boost 2.0 Yes
EIST Yes Yes
F16C Yes
FMA3 Yes
HTT Yes Yes
Intel 64 Yes Yes
MMX Yes Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4.2 Yes Yes
SSSE3 Yes Yes
TXT Yes Yes
VT-d Yes
VT-x Yes Yes
XD bit Yes
XD-Bit Yes


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