CPUBoss Review Our evaluation of 2643 v2 vs 6700K among all CPUs

Performance

Benchmark performance using all cores
Xeon E5 2643 v2
5.7
Core i7 6700K
6.5
Core i7 4790K
6.5
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
Xeon E5 2643 v2
8.9
Core i7 6700K
10.0
Core i7 4790K
9.8
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
Xeon E5 2643 v2
n.d.
Core i7 6700K
n.d.
Core i7 4790K
n.d.
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
Xeon E5 2643 v2
0.0
Core i7 6700K
7.6
Core i7 4790K
6.9
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
Xeon E5 2643 v2
5.0
Core i7 6700K
5.2
Core i7 4790K
5.2
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
Xeon E5 2643 v2
n.d.
Core i7 6700K
7.3
Core i7 4790K
8.4
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more
9.1

CPUBoss Score

Combination of all six facets
Xeon E5 2643 v2
5.4
Core i7 6700K
9.1
Core i7 4790K
9.1

Winner
Intel Core i7 6700K 

CPUBoss recommends the Intel Core i7 6700K  based on its .

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Intel Xeon E5 2643 v2

Front view of Intel Xeon E5 2643 v2
Front view of Intel Core i7 6700K

Intel Core i7 6700K

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Differences What are the advantages of each

Front view of Intel Xeon E5 2643 v2

Reasons to consider the
Intel Xeon E5 2643 v2

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Much more l2 cache 2.5 MB vs 1 MB 2.5x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 25 MB vs 8 MB Around 3.2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l3 cache per core 4.17 MB/core vs 2 MB/core More than 2x more l3 cache per core
More threads 20 vs 8 12 more threads
Much better performance per watt 10.7 pt/W vs 3.49 pt/W More than 3x better performance per watt
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports more RAM 786,432 MB vs 65,536 MB Supports 12x more RAM
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More cores 6 vs 4 2 more cores; run more applications at once
Higher Maximum operating temperature 74 °C vs 64 °C More than 15% higher Maximum operating temperature
More l2 cache per core 0.42 MB/core vs 0.25 MB/core More than 65% more l2 cache per core
Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher clock speed 4 GHz vs 3.5 GHz Around 15% higher clock speed
Higher turbo clock speed 4.2 GHz vs 3.8 GHz More than 10% higher turbo clock speed
Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better geekbench 3 single core score 4,510 vs 2,757 Around 65% better geekbench 3 single core score
Much lower typical power consumption 73.94W vs 105.63W 30% lower typical power consumption
Significantly better overclocked clock speed (Air) 4.61 GHz vs 3.57 GHz Around 30% better overclocked clock speed (Air)
Better geekbench 3 Multi-Core score 17,583 vs 16,602 More than 5% better geekbench 3 Multi-Core score
Much lower annual home energy cost 21.92 $/year vs 31.32 $/year 30% lower annual home energy cost
Much lower annual commercial energy cost 79.72 $/year vs 113.88 $/year More than 30% lower annual commercial energy cost
Better overclocked clock speed (Water) 4.77 GHz vs 4.07 GHz More than 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E5 2643 v2 vs Core i7 6700K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5 2643 v2
16,602
Core i7 6700K
17,583

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5 2643 v2
2,757
Core i7 6700K
4,510

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5 2643 v2
2,060,000 MB/s
Core i7 6700K
6,010 MB/s

Specifications Full list of technical specs

summary

 Xeon E5 2643 v2  vs
Core i7 6700K 
Clock speed 3.5 GHz 4 GHz
Turbo clock speed 3.8 GHz 4.2 GHz
Cores Hexa core Quad core
Is unlocked No Yes

features
Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 130W 91W
Annual home energy cost 31.32 $/year 21.92 $/year
Annual commercial energy cost 113.88 $/year 79.72 $/year
Performance per watt 10.7 pt/W 3.49 pt/W
Typical power consumption 105.63W 73.94W

bus
Architecture QPI FSB
Number of links 2 0
Transfer rate 8,000 MT/s 8,000 MT/s

details

 Xeon E5 2643 v2  vs
Core i7 6700K 
Architecture x86-64 x86-64
Threads 20 8
L2 cache 2.5 MB 1 MB
L2 cache per core 0.42 MB/core 0.25 MB/core
L3 cache 25 MB 8 MB
L3 cache per core 4.17 MB/core 2 MB/core
Manufacture process 22 nm 14 nm
Max CPUs 2 1
Operating temperature Unknown - 74°C Unknown - 64°C

overclocking
Overclocked clock speed 3.57 GHz 4.61 GHz
Overclocked clock speed (Water) 4.07 GHz 4.77 GHz
Overclocked clock speed (Air) 3.57 GHz 4.61 GHz

integrated graphics
GPU None GPU
Label N/A Intel® HD Graphics 530
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,150 MHz

memory controller
Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3
Channels Quad Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 786,432 MB 65,536 MB
Intel Xeon E5 2643 v2
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Intel Core i7 6700K
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