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Intel Xeon X5670

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Front view of Intel Xeon X5670

Differences What are the advantages of each

Front view of Intel Xeon X5670

Reasons to consider the
Intel Xeon X5670

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Much lower typical power consumption 77.19W vs 212W 2.7x lower typical power consumption
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 watt 8.54 pt/W vs 0.93 pt/W Around 9.2x better performance per watt
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 22.89 $/year vs 82.69 $/year 3.6x lower annual home energy cost
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly better performance per dollar 0.56 pt/$ vs 0.21 pt/$ Around 2.8x better performance per dollar
Much lower annual commercial energy cost 83.22 $/year vs 211.12 $/year 2.5x lower annual commercial energy cost
More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 8 4 more threads
Higher Maximum operating temperature 81.3 °C vs 67.9 °C Around 20% higher Maximum operating temperature
Supports more RAM 294,912 MB vs 24,000 MB Supports more than 12.2x more RAM
Better PassMark score 8,013 vs 6,173 Around 30% better PassMark score
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Newer Mar, 2010 vs Jun, 2009 Release date 9 months later
Front view of Intel Core i7 975

Reasons to consider the
Intel Core i7 975

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Much better 3DMark06 CPU score 5,836.5 vs 5,794 Almost the same
Higher clock speed 3.33 GHz vs 2.93 GHz Around 15% higher clock speed
Higher turbo clock speed 3.6 GHz vs 3.33 GHz Around 10% higher turbo clock speed
Slightly better overclocked clock speed (Air) 4.46 GHz vs 4.29 GHz Around 5% better overclocked clock speed (Air)

Benchmarks Real world tests of Xeon X5670 vs Core i7 975

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5670
24,364
Core i7 975
9,214

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5670
2,341
Core i7 975
2,324

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5670
1,590,000 MB/s
Core i7 975
152,250 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon X5670
13,847
Core i7 975
9,229

GeekBench (64-bit) Data courtesy Primate Labs

Xeon X5670
14,780
Core i7 975
9,894

GeekBench

Xeon X5670
14,780
Core i7 975
11,512

PassMark Data courtesy Passmark

Xeon X5670
8,013
Core i7 975
6,173

PassMark (Single Core)

Xeon X5670
1,347
Core i7 975
1,461

Specifications Full list of technical specs

summary

Xeon X5670  vs
Core i7 975 
Clock speed 2.93 GHz 3.33 GHz
Turbo clock speed 3.33 GHz 3.6 GHz
Cores Hexa 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 82.69 $/year
Annual commercial energy cost 83.22 $/year 211.12 $/year
Performance per watt 8.54 pt/W 0.93 pt/W
Typical power consumption 77.19W 212W

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 24,000 MB

details

Xeon X5670  vs
Core i7 975 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 1
Clock multiplier 22 25
Voltage range 0.75 - 1.35V 0.8 - 1.38V
Operating temperature Unknown - 81.3°C 5 - 67.9°C

overclocking

Overclock popularity 8 8
Overclocked clock speed 4.29 GHz 4.46 GHz
Overclocked clock speed (Water) 4.5 GHz 4.45 GHz
Overclocked clock speed (Air) 4.29 GHz 4.46 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 25,600 MB/s
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon X5670
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Intel Core i7 975
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