CPUBoss Review Our evaluation of X5675 vs E5-2658 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Xeon X5675

Reasons to consider the
Intel Xeon X5675

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Much higher clock speed 3.06 GHz vs 2.1 GHz More than 45% higher clock speed
Much higher turbo clock speed 3.46 GHz vs 2.4 GHz Around 45% higher turbo clock speed
Much better performance per watt 8.89 pt/W vs 3.47 pt/W More than 2.5x better performance per watt
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Front view of Intel Xeon E5-2658

Reasons to consider the
Intel Xeon E5-2658

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Much more l3 cache 20 MB vs 12 MB More than 65% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 16 vs 12 4 more threads
Supports more RAM 393,216 MB vs 294,912 MB Supports around 35% more RAM
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Newer Mar, 2012 vs Feb, 2011 Release date over 1 years later

Benchmarks Real world tests of Xeon X5675 vs E5-2658

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5675
25,323
Xeon E5-2658
20,182

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5675
2,418
Xeon E5-2658
2,547

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5675
1,650,000 MB/s
Xeon E5-2658
2,570 MB/s

PassMark Data courtesy Passmark

Xeon X5675
8,527
Xeon E5-2658
16,351

PassMark (Single Core)

Xeon X5675
1,405
Xeon E5-2658
1,694

Specifications Full list of technical specs

summary

Xeon X5675  vs
E5-2658 
Clock speed 3.06 GHz 2.1 GHz
Turbo clock speed 3.46 GHz 2.4 GHz
Cores Hexa core Octa core
Socket type
LGA 1366
LGA 2011

features

Has a NX bit Yes Yes
Supports trusted computing 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 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 8.89 pt/W 3.47 pt/W
Typical power consumption 77.19W 77.19W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 51,200 MB/s 64,000 MB/s
Transfer rate 6,400 MT/s 8,000 MT/s
Clock speed 3,200 MHz 4,000 MHz

details

Xeon X5675  vs
E5-2658 
Architecture x86-64 x86-64
Threads 12 16
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 20 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 23 24
Voltage range 0.75 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 81.3°C Unknown - 88°C

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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 51,200 MB/s
Maximum memory size 294,912 MB 393,216 MB
Intel Xeon X5675
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Intel Xeon E5-2658
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