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Front view of Intel Core i7 950

Intel Core i7 950

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Xeon X5667

Reasons to consider the
Intel Xeon X5667

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
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
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Higher Maximum operating temperature 82.9 °C vs 67.9 °C More than 20% higher Maximum operating temperature
Supports more RAM 294,912 MB vs 24,576 MB Supports 12x more RAM
Better performance per watt 2.75 pt/W vs 1.55 pt/W More than 75% better performance per watt
Significantly lower annual home energy cost 22.89 $/year vs 31.32 $/year More than 25% lower annual home energy cost
Significantly lower annual commercial energy cost 83.22 $/year vs 113.88 $/year More than 25% lower annual commercial energy cost
Better overclocked clock speed (Air) 4.46 GHz vs 4.25 GHz Around 5% better overclocked clock speed (Air)
Newer Mar, 2010 vs Jun, 2009 Release date 9 months later
Front view of Intel Core i7 950

Reasons to consider the
Intel Core i7 950

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Much better performance per dollar 0.66 pt/$ vs 0.18 pt/$ Around 3.8x better performance per dollar
Significantly better overclocked clock speed (Water) 4.2 GHz vs 3.07 GHz More than 35% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon X5667 vs Core i7 950

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5667
17,452
Core i7 950
8,385

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5667
2,241
Core i7 950
2,085

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5667
167,600 MB/s
Core i7 950
137,000 MB/s

PassMark Data courtesy Passmark

Xeon X5667
4,722
Core i7 950
5,595

PassMark (Single Core)

Xeon X5667
1,309
Core i7 950
1,324

Specifications Full list of technical specs

summary

Xeon X5667  vs
Core i7 950 
Clock speed 3.06 GHz 3.06 GHz
Turbo clock speed 3.46 GHz 3.33 GHz
Cores Quad core Quad core
Socket type
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing Yes 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 95W 130W
Annual home energy cost 22.89 $/year 31.32 $/year
Annual commercial energy cost 83.22 $/year 113.88 $/year
Performance per watt 2.75 pt/W 1.55 pt/W
Typical power consumption 77.19W 105.63W

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 294,912 MB 24,576 MB

details

Xeon X5667  vs
Core i7 950 
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 12 MB 8 MB
L3 cache per core 3 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 1
Clock multiplier 23 23
Voltage range 0.75 - 1.35V 0.8 - 1.38V
Operating temperature Unknown - 82.9°C Unknown - 67.9°C

overclocking

Overclocked clock speed 4.46 GHz 4.25 GHz
Overclocked clock speed (Water) 3.07 GHz 4.2 GHz
Overclocked clock speed (Air) 4.46 GHz 4.25 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 1
Data rate 51,200 MB/s 19,200 MB/s
Transfer rate 6,400 MT/s 4,800 MT/s
Clock speed 3,200 MHz 2,400 MHz
Intel Xeon X5667
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Intel Core i7 950
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