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Differences What are the advantages of each

Front view of Intel Xeon W3580

Reasons to consider the
Intel Xeon W3580

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Much lower annual home energy cost 31.32 $/year vs 50.68 $/year Around 40% lower annual home energy cost
Much lower annual commercial energy cost 113.88 $/year vs 148.92 $/year Around 25% lower annual commercial energy cost
Front view of Intel Core i7 980X

Reasons to consider the
Intel Core i7 980X

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Significantly 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 newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better performance per dollar 0.76 pt/$ vs 0.21 pt/$ Around 3.8x better performance per dollar
More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 8 4 more threads
Better performance per watt 4.35 pt/W vs 1.71 pt/W More than 2.5x better performance per watt
Better PassMark score 8,879 vs 6,412 Around 40% better PassMark score
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Significantly better overclocked clock speed (Water) 4.28 GHz vs 3.33 GHz Around 30% better overclocked clock speed (Water)
Newer Mar, 2010 vs Aug, 2009 Release date 7 months later

Benchmarks Real world tests of Xeon W3580 vs Core i7 980X

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon W3580
8,928
Core i7 980X
14,564

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon W3580
2,344
Core i7 980X
2,586

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon W3580
144,950 MB/s
Core i7 980X
1,710,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon W3580
9,367
Core i7 980X
14,533

GeekBench (64-bit) Data courtesy Primate Labs

Xeon W3580
10,164
Core i7 980X
15,418

GeekBench

Xeon W3580
10,164
Core i7 980X
15,418

PassMark Data courtesy Passmark

Xeon W3580
6,412
Core i7 980X
8,879

PassMark (Single Core)

Xeon W3580
1,509
Core i7 980X
1,454

Specifications Full list of technical specs

summary

Xeon W3580  vs
Core i7 980X 
Clock speed 3.33 GHz 3.33 GHz
Turbo clock speed 3.6 GHz 3.6 GHz
Cores Quad core Hexa core
Socket type
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
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 50.68 $/year
Annual commercial energy cost 113.88 $/year 148.92 $/year
Performance per watt 1.71 pt/W 4.35 pt/W
Typical power consumption 105.63W N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Triple Channel
Supports ECC Yes No
Maximum bandwidth 31,999.98 MB/s 25,599.99 MB/s
Maximum memory size 24,576 MB 24,576 MB

details

Xeon W3580  vs
Core i7 980X 
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 12 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Transistor count 731,000,000 1,170,000,000
Max CPUs 1 1
Clock multiplier 25 25
Voltage range 0.8 - 1.38V 0.8 - 1.38V
Operating temperature Unknown - 67.9°C Unknown - 67.9°C

overclocking

Overclocked clock speed 4.6 GHz 4.53 GHz
Overclocked clock speed (Water) 3.33 GHz 4.28 GHz
Overclocked clock speed (Air) 4.6 GHz 4.53 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 1 1
Data rate 25,600 MB/s 25,600 MB/s
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon W3580
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Intel Core i7 980X
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