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Intel Xeon X5650

Front view of Intel Xeon X5650
Front view of Intel Xeon E5645

Intel Xeon E5645

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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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Significantly higher clock speed 2.66 GHz vs 2.4 GHz More than 10% higher clock speed
Significantly higher turbo clock speed 3.06 GHz vs 2.67 GHz Around 15% higher turbo clock speed
Much higher Maximum operating temperature 81.3 °C vs 76.2 °C More than 5% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.84 GHz vs 3.39 GHz Around 15% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.64 GHz vs 2.4 GHz Around 95% better overclocked clock speed (Water)
Front view of Intel Xeon E5645

Reasons to consider the
Intel Xeon E5645

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Lower typical power consumption 65W vs 77.19W More than 15% lower typical power consumption
Lower annual commercial energy cost 70.08 $/year vs 83.22 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 22.89 $/year More than 15% lower annual home energy cost

Benchmarks Real world tests of Xeon X5650 vs E5645

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5650
22,313
Xeon E5645
20,172

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5650
2,176
Xeon E5645
1,968

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5650
1,470,000 MB/s
Xeon E5645
1,340,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon X5650
13,247
Xeon E5645
11,304

GeekBench (64-bit) Data courtesy Primate Labs

Xeon X5650
13,603
Xeon E5645
11,929

GeekBench

Xeon X5650
14,009
Xeon E5645
11,929

PassMark Data courtesy Passmark

Xeon X5650
7,510
Xeon E5645
6,545

PassMark (Single Core)

Xeon X5650
1,234
Xeon E5645
1,083

Specifications Full list of technical specs

summary

 Xeon X5650  vs
E5645 
Clock speed 2.66 GHz 2.4 GHz
Turbo clock speed 3.06 GHz 2.67 GHz
Cores Hexa core Hexa core
Socket type
LGA 1366

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 80W
Annual home energy cost 22.89 $/year 19.27 $/year
Annual commercial energy cost 83.22 $/year 70.08 $/year
Performance per watt 7.89 pt/W 8.49 pt/W
Typical power consumption 77.19W 65W

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 Yes
Maximum bandwidth 31,999.98 MB/s 31,999.98 MB/s
Maximum memory size 294,912 MB 294,912 MB

details

 Xeon X5650  vs
E5645 
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 12 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 20 18
Voltage range 0.75 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 81.3°C Unknown - 76.2°C

overclocking
Overclock popularity 11 3
Overclocked clock speed 3.84 GHz 3.39 GHz
Overclocked clock speed (Water) 4.64 GHz 2.4 GHz
Overclocked clock speed (Air) 3.84 GHz 3.39 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 2
Data rate 51,200 MB/s 46,928 MB/s
Transfer rate 6,400 MT/s 5,860 MT/s
Clock speed 3,200 MHz 2,930 MHz
Intel Xeon X5650
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Intel Xeon E5645
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