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Differences What are the advantages of each

Front view of Intel Xeon W3540

Reasons to consider the
Intel Xeon W3540

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Lower typical power consumption 105.63W vs 114.2W Around 10% lower typical power consumption
Much lower annual home energy cost 31.32 $/year vs 41.8 $/year More than 25% lower annual home energy cost
Front view of Intel Core i7 2600K

Reasons to consider the
Intel Core i7 2600K

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Much better performance per dollar 2.92 pt/$ vs 0.33 pt/$ Around 9x better performance per dollar
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher turbo clock speed 3.8 GHz vs 3.2 GHz Around 20% higher turbo clock speed
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3.4 GHz vs 2.93 GHz More than 15% higher clock speed
Much better performance per watt 7.53 pt/W vs 1.5 pt/W More than 5x better performance per watt
Significantly better PassMark (Single core) score 1,920 vs 1,300 Around 50% better PassMark (Single core) score
Better PassMark score 8,494 vs 5,479 More than 55% better PassMark score
Better overclocked clock speed (Air) 5.05 GHz vs 4.51 GHz More than 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.76 GHz vs 2.93 GHz More than 60% better overclocked clock speed (Water)
Newer Jan, 2011 vs Mar, 2009 Release date over 1 years later
Higher Maximum operating temperature 72.6 °C vs 67.9 °C More than 5% higher Maximum operating temperature

Benchmarks Real world tests of Xeon W3540 vs Core i7 2600K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon W3540
7,923
Core i7 2600K
11,563

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon W3540
128,600 MB/s
Core i7 2600K
2,500,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon W3540
8,045
Core i7 2600K
12,823

GeekBench (64-bit) Data courtesy Primate Labs

Xeon W3540
8,799
Core i7 2600K
13,916

GeekBench

Xeon W3540
9,879
Core i7 2600K
16,706

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon W3540  vs
Core i7 2600K 
Clock speed 2.93 GHz 3.4 GHz
Turbo clock speed 3.2 GHz 3.8 GHz
Cores Quad core Quad core
Socket type
LGA 1366
LGA 1155

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
Supports dynamic frequency scaling Yes Yes

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 3000
Latest DirectX N/A 10.x
Number of displays supported N/A 2
GPU clock speed N/A 850 MHz
Turbo clock speed N/A 1,350 MHz
3DMark06 N/A 5,275

bus

Architecture QPI DMI
Number of links 1 1
Transfer rate 4,800 MT/s 5,000 MT/s

details

Xeon W3540  vs
Core i7 2600K 
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 32 nm
Transistor count 731,000,000 995,000,000
Max CPUs 1 1
Clock multiplier 22 34
Voltage range 0.8 - 1.38V 0.85 - 1.45V
Operating temperature Unknown - 67.9°C Unknown - 72.6°C

overclocking

Overclock popularity 0 2,016
Overclocked clock speed 4.51 GHz 5.05 GHz
Overclocked clock speed (Water) 2.93 GHz 4.76 GHz
Overclocked clock speed (Air) 4.51 GHz 5.05 GHz

power consumption

TDP 130W 95W
Annual home energy cost 31.32 $/year 41.8 $/year
Annual commercial energy cost 113.88 $/year 111.78 $/year
Performance per watt 1.5 pt/W 7.53 pt/W
Typical power consumption 105.63W 114.2W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 25,599.99 MB/s 21,333.32 MB/s
Maximum memory size 24,576 MB 32,768 MB
Intel Xeon W3540
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Intel Core i7 2600K
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