CPUBoss Review Our evaluation of X6550 vs X5670 among all CPUs

Performance

Benchmark performance using all cores
Xeon X6550
5.5
Xeon X5670
6.3
Xeon X5690
6.6
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
Xeon X6550
5.7
Xeon X5670
8.3
Xeon X5690
8.5
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
Xeon X6550
n.d.
Xeon X5670
n.d.
Xeon X5690
n.d.
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
Xeon X6550
0.0
Xeon X5670
0.0
Xeon X5690
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
Xeon X6550
5.0
Xeon X5670
5.0
Xeon X5690
5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
Xeon X6550
n.d.
Xeon X5670
n.d.
Xeon X5690
n.d.
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more
5.4

CPUBoss Score

Combination of all six facets
Xeon X6550
4.6
Xeon X5670
5.4
Xeon X5690
5.5

Winner
Intel Xeon X5670 

CPUBoss recommends the Intel Xeon X5670  based on its performance, single-core performance, cost to run and value.

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VS

Intel Xeon X6550

Front view of Intel Xeon X6550
Front view of Intel Xeon X5670

Intel Xeon X5670

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Differences What are the advantages of each

Front view of Intel Xeon X6550

Reasons to consider the
Intel Xeon X6550

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Much more l3 cache 18 MB vs 12 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 16 vs 12 4 more threads
More l3 cache per core 2.25 MB/core vs 2 MB/core Around 15% more l3 cache per core
Front view of Intel Xeon X5670

Reasons to consider the
Intel Xeon X5670

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Much higher clock speed 2.93 GHz vs 2 GHz More than 45% higher clock speed
Much higher turbo clock speed 3.33 GHz vs 2.4 GHz Around 40% higher turbo clock speed
Much better PassMark score 8,013 vs 2,977 Around 2.8x better PassMark score
Much better overclocked clock speed (Air) 4.29 GHz vs 2.07 GHz More than 2x better overclocked clock speed (Air)
Much better performance per watt 8.54 pt/W vs 0.73 pt/W More than 11.8x better performance per watt
Much higher Maximum operating temperature 81.3 °C vs 69 °C Around 20% higher Maximum operating temperature
Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
Much better overclocked clock speed (Water) 4.5 GHz vs 2 GHz Around 2.2x better overclocked clock speed (Water)
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Significantly lower annual commercial energy cost 83.22 $/year vs 113.88 $/year More than 25% lower annual commercial energy cost
Significantly lower annual home energy cost 22.89 $/year vs 31.32 $/year More than 25% lower annual home energy cost

Benchmarks Real world tests of Xeon X6550 vs X5670

PassMark Data courtesy Passmark

Xeon X6550
2,977
Xeon X5670
8,013

PassMark (Single Core)

Xeon X6550
600
Xeon X5670
1,347

Specifications Full list of technical specs

summary

 Xeon X6550  vs
X5670 
Clock speed 2 GHz 2.93 GHz
Turbo clock speed 2.4 GHz 3.33 GHz
Cores Octa core Hexa core
Socket type
LGA 1567
LGA 1366

features
Has a NX bit Yes Yes
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 95W
Annual home energy cost 31.32 $/year 22.89 $/year
Annual commercial energy cost 113.88 $/year 83.22 $/year
Performance per watt 0.73 pt/W 8.54 pt/W
Typical power consumption 105.63W 77.19W

details

 Xeon X6550  vs
X5670 
Threads 16 12
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 0.33 MB/core
L3 cache 18 MB 12 MB
L3 cache per core 2.25 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 2 2
Operating temperature Unknown - 69°C Unknown - 81.3°C

overclocking
Overclocked clock speed 2.07 GHz 4.29 GHz
Overclocked clock speed (Water) 2 GHz 4.5 GHz
Overclocked clock speed (Air) 2.07 GHz 4.29 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 4 2
Data rate 102,400 MB/s 51,200 MB/s
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon X6550
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Intel Xeon X5670
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