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Differences What are the advantages of each

Front view of Intel Xeon 5160

Reasons to consider the
Intel Xeon 5160

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 2 MB/core vs 0.25 MB/core 8x more l2 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower typical power consumption 65W vs 73.94W More than 10% lower typical power consumption
Lower annual home energy cost 19.27 $/year vs 21.92 $/year More than 10% lower annual home energy cost
Lower annual commercial energy cost 70.08 $/year vs 79.72 $/year More than 10% lower annual commercial energy cost
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 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 4 GHz vs 3 GHz Around 35% higher clock speed
Much better CompuBench 1.5 T-Rex score 1.82 fps vs 0.12 fps Around 15.2x better CompuBench 1.5 T-Rex score
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better PassMark score 11,109 vs 1,971 Around 5.8x better PassMark score
Much better PassMark (Single core) score 2,349 vs 1,130 More than 2x better PassMark (Single core) score
Much better performance per dollar 0.91 pt/$ vs 0.14 pt/$ More than 6.5x better performance per dollar
Newer Jul, 2015 vs Jun, 2006 Release date over 9 years later
More threads 8 vs 2 6 more threads
Significantly better overclocked clock speed (Air) 4.61 GHz vs 3.63 GHz More than 25% better overclocked clock speed (Air)
More cores 4 vs 2 Twice as many cores; run more applications at once
Better performance per watt 3.49 pt/W vs 1.56 pt/W Around 2.2x better performance per watt
Much better overclocked clock speed (Water) 4.77 GHz vs 3 GHz Around 60% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon 5160 vs Core i7 6700K

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Xeon 5160
0.12 fps
Core i7 6700K
1.82 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon 5160
5,525
Core i7 6700K
17,583

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon 5160
1,569

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon 5160
120,000 MB/s
Core i7 6700K
6,010 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon 5160
2,576
Core i7 6700K
17,169

GeekBench

Xeon 5160
3,222
Core i7 6700K
17,169

PassMark Data courtesy Passmark

Xeon 5160
1,971
Core i7 6700K
11,109

PassMark (Single Core)

Xeon 5160
1,130

Specifications Full list of technical specs

summary

Xeon 5160  vs
Core i7 6700K 
Clock speed 3 GHz 4 GHz
Cores Dual 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 80W 91W
Annual home energy cost 19.27 $/year 21.92 $/year
Annual commercial energy cost 70.08 $/year 79.72 $/year
Performance per watt 1.56 pt/W 3.49 pt/W
Typical power consumption 65W 73.94W

bus

Architecture FSB FSB
Number of links 1 0

details

Xeon 5160  vs
Core i7 6700K 
Architecture x86-64 x86-64
Threads 2 8
L2 cache 4 MB 1 MB
L2 cache per core 2 MB/core 0.25 MB/core
Manufacture process 65 nm 14 nm
Max CPUs 2 1
Operating temperature Unknown - 65°C Unknown - 64°C

overclocking

Overclocked clock speed 3.63 GHz 4.61 GHz
Overclocked clock speed (Water) 3 GHz 4.77 GHz
Overclocked clock speed (Air) 3.63 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
Supports ECC No No
Intel Xeon 5160
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Intel Core i7 6700K
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