CPUBoss Review Our evaluation of X5650 vs E5-2640

Performance

Benchmark performance using all cores

Passmark and GeekBench (32-bit)

Single-core Performance

Individual core benchmark performance

Passmark (Single Core)

Cost to Run

Commercial Energy Cost

Value

Performance Per Dollar

No winner declared

Too close to call

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Differences What are the advantages of each

Front view of Intel Xeon X5650

Reasons to consider the
Intel Xeon X5650

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Much better performance per dollar 11.2 pt/$ vs 1.68 pt/$ Around 6.8x better performance per dollar
Higher Maximum Operating Temperature 81.3 °C vs 73 °C More than 10% higher Maximum Operating Temperature
Front view of Intel Xeon E5-2640

Reasons to consider the
Intel Xeon E5-2640

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Significantly better geekbench (32-bit) score 16,841 vs 12,549 Around 35% better geekbench (32-bit) score
More l3 cache 15 MB vs 12 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
Better PassMark score 9,652 vs 7,639 More than 25% better PassMark score
Marginally newer Mar, 2012 vs Mar, 2010 Release date over 2 years later
Better PassMark (Single core) score 1,453 vs 1,229 Around 20% better PassMark (Single core) score
Better performance per watt 16.38 pt/W vs 12.97 pt/W More than 25% better performance per watt
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Supports more RAM 393,216 MB vs 294,912 MB Supports around 35% more RAM

Benchmarks Real world tests of Xeon X5650 vs E5-2640

GeekBench (32-bit)

Xeon X5650
12,549
Xeon E5-2640
16,841

GeekBench

Xeon X5650
14,009
Xeon E5-2640
16,841

Passmark (Single Core)

Xeon X5650
1,229
Xeon E5-2640
1,453

Specifications Full list of technical specs

summary

Xeon X5650  vs
E5-2640 
Clock speed 2.66 GHz 2.5 GHz
Turbo clock speed 3.06 GHz 3 GHz
Cores Hexa core Hexa core
Socket type
LGA 1366
LGA 2011
Is hyperthreaded Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has vitualization support Yes Yes
Instruction-set-extensions
MMX
SSE
SSE4.2
AVX
SSE3
SSE2
Supplemental SSE3
SSE4.1
SSE4
AES
Supports dynamic frequency scaling Yes Yes

gpu

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
DDR3-1333
DDR3-1066
DDR3-800
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 42,666.64 MB/s
Maximum memory size 294,912 MB 393,216 MB

details

Xeon X5650  vs
E5-2640 
Architecture x86-64 x86-64
Threads 12 12
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.33 MB/core
L3 cache 12 MB 15 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nms 32 nms
Max CPUs 2 2
Clock multiplier 20 30
Voltage range 0.75 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 81.3°C Unknown - 73°C

overclocking

Overclock popularity 11 3

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 12.97 pt/W 16.38 pt/W
Typical power consumption 77.19W 77.19W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 51,200 MB/s 57,600 MB/s
Transfer rate 6,400 MT/s 7,200 MT/s
Clock speed 3,200 MHz 3,600 MHz
Intel Xeon X5650
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Intel Xeon E5-2640
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