CPUBoss Review Our evaluation of W5580 vs 6700K among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

8.2

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 6700K 

CPUBoss recommends the Intel Core i7 6700K  based on its performance, single-core performance and value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon W5580

Reasons to consider the
Intel Xeon W5580

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports more RAM 147,456 MB vs 65,536 MB Supports 2.2x more RAM
Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Much newer manufacturing process 14 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 4 GHz vs 3.2 GHz Around 25% higher clock speed
Higher turbo clock speed 4.2 GHz vs 3.46 GHz More than 20% higher turbo clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 73.94W vs 105.63W 30% lower typical power consumption
Much better performance per dollar 0.91 pt/$ vs 0.15 pt/$ Around 6x better performance per dollar
Significantly better PassMark (Single core) score 2,349 vs 1,410 More than 65% better PassMark (Single core) score
Significantly better PassMark score 11,109 vs 5,836 More than 90% better PassMark score
Newer Jul, 2015 vs Mar, 2009 Release date over 6 years later
Significantly better overclocked clock speed (Air) 4.61 GHz vs 3.53 GHz More than 30% better overclocked clock speed (Air)
Better performance per watt 3.49 pt/W vs 1.95 pt/W Around 80% better performance per watt
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 4.04 GHz Around 20% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon W5580 vs Core i7 6700K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon W5580
16,251
Core i7 6700K
17,583

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon W5580
135,550 MB/s
Core i7 6700K
6,010 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon W5580
8,432
Core i7 6700K
17,169

GeekBench

Xeon W5580
10,171
Core i7 6700K
17,169

PassMark Data courtesy Passmark

Xeon W5580
5,836
Core i7 6700K
11,109

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon W5580  vs
Core i7 6700K 
Clock speed 3.2 GHz 4 GHz
Turbo clock speed 3.46 GHz 4.2 GHz
Cores Quad core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing No 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 1.95 pt/W 3.49 pt/W
Typical power consumption 105.63W 73.94W

bus

Architecture QPI FSB
Number of links 2 0
Transfer rate 6,400 MT/s 8,000 MT/s

details

Xeon W5580  vs
Core i7 6700K 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 14 nm
Max CPUs 2 1
Operating temperature Unknown - 67°C Unknown - 64°C

overclocking

Overclocked clock speed 3.53 GHz 4.61 GHz
Overclocked clock speed (Water) 4.04 GHz 4.77 GHz
Overclocked clock speed (Air) 3.53 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
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 31,999.98 MB/s 25,600 MB/s
Maximum memory size 147,456 MB 65,536 MB
Intel Xeon W5580
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Intel Core i7 6700K
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