CPUBoss Review Our evaluation of W5580 vs E5-1660 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

5.6

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E5-1660 

CPUBoss recommends the Intel Xeon E5-1660  based on its 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
Front view of Intel Xeon E5-1660

Reasons to consider the
Intel Xeon E5-1660

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Much more l3 cache 15 MB vs 8 MB Around 90% more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better PassMark score 16,462 vs 5,836 More than 2.8x better PassMark score
Significantly higher turbo clock speed 3.9 GHz vs 3.46 GHz Around 15% higher turbo clock speed
More cores 6 vs 4 2 more cores; run more applications at once
Much better performance per watt 8.67 pt/W vs 1.95 pt/W Around 4.5x better performance per watt
Much better overclocked clock speed (Air) 4.79 GHz vs 3.53 GHz More than 35% better overclocked clock speed (Air)
Higher clock speed 3.3 GHz vs 3.2 GHz Around 5% higher clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More threads 12 vs 8 4 more threads
Supports more RAM 262,144 MB vs 147,456 MB Supports around 80% more RAM
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Much better overclocked clock speed (Water) 4.8 GHz vs 4.04 GHz Around 20% better overclocked clock speed (Water)
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Newer Mar, 2012 vs Mar, 2009 Release date over 2 years later

Benchmarks Real world tests of Xeon W5580 vs E5-1660

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon W5580
16,251
Xeon E5-1660
18,215

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon W5580
2,202
Xeon E5-1660
3,242

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon W5580
135,550 MB/s
Xeon E5-1660
2,340,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon W5580
8,432
Xeon E5-1660
18,846

GeekBench

Xeon W5580
10,171
Xeon E5-1660
24,702

PassMark Data courtesy Passmark

Xeon W5580
5,836
Xeon E5-1660
16,462

PassMark (Single Core)

Xeon W5580
1,410
Xeon E5-1660
2,082

Specifications Full list of technical specs

summary

Xeon W5580  vs
E5-1660 
Clock speed 3.2 GHz 3.3 GHz
Turbo clock speed 3.46 GHz 3.9 GHz
Cores Quad core Hexa core
Socket type
LGA 1366
LGA 2011

features

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

power consumption

TDP 130W 130W
Annual home energy cost 31.32 $/year 31.32 $/year
Annual commercial energy cost 113.88 $/year 113.88 $/year
Performance per watt 1.95 pt/W 8.67 pt/W
Typical power consumption 105.63W 105.63W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 51,200 MB/s
Maximum memory size 147,456 MB 262,144 MB

details

Xeon W5580  vs
E5-1660 
Architecture x86-64 x86-64
Threads 8 12
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.33 MB/core
L3 cache 8 MB 15 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 2 1
Clock multiplier 24 39
Voltage range 0.75 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 67°C Unknown - 64°C

overclocking

Overclocked clock speed 3.53 GHz 4.79 GHz
Overclocked clock speed (Water) 4.04 GHz 4.8 GHz
Overclocked clock speed (Air) 3.53 GHz 4.79 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

bus

Architecture QPI QPI
Number of links 2 0
Transfer rate 6,400 MT/s 0 MT/s
Clock speed 3,200 MHz 0 MHz
Intel Xeon W5580
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Intel Xeon E5-1660
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