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Differences What are the advantages of each

Front view of Intel Xeon X7350

Reasons to consider the
Intel Xeon X7350

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Much more l2 cache 8 MB vs 2 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 2.93 GHz vs 2.4 GHz More than 20% higher clock speed
Supports more CPUs in SMP configuration 32 vs 2 30 supports more CPUs in SMP configuration
Much more l2 cache per core 2 MB/core vs 0.33 MB/core More than 6x more l2 cache per core
Much better overclocked clock speed (Water) 5.24 GHz vs 2.4 GHz Around 2.2x better overclocked clock speed (Water)
Front view of Intel Xeon E5645

Reasons to consider the
Intel Xeon E5645

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More cores 6 vs 4 2 more cores; run more applications at once
Much better performance per watt 8.49 pt/W vs 0.32 pt/W More than 26.8x better performance per watt
Much better performance per dollar 1.2 pt/$ vs 0.02 pt/$ More than 69.8x better performance per dollar
More threads 12 vs 4 Three times as many threads
Significantly newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower typical power consumption 65W vs 105.63W Around 40% lower typical power consumption
Much better overclocked clock speed (Air) 3.39 GHz vs 2.94 GHz More than 15% better overclocked clock speed (Air)
Much lower annual commercial energy cost 70.08 $/year vs 113.88 $/year Around 40% lower annual commercial energy cost
Much lower annual home energy cost 19.27 $/year vs 31.32 $/year Around 40% lower annual home energy cost
Newer Mar, 2010 vs Sep, 2007 Release date over 2 years later

Benchmarks Real world tests of Xeon X7350 vs E5645

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X7350
1,203
Xeon E5645
20,172

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X7350
1,213
Xeon E5645
1,968

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X7350
113.1 MB/s
Xeon E5645
1,340,000 MB/s

Specifications Full list of technical specs

summary

Xeon X7350  vs
E5645 
Clock speed 2.93 GHz 2.4 GHz
Cores Quad core Hexa core
Socket type
604
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing No 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 80W
Annual home energy cost 31.32 $/year 19.27 $/year
Annual commercial energy cost 113.88 $/year 70.08 $/year
Performance per watt 0.32 pt/W 8.49 pt/W
Typical power consumption 105.63W 65W

details

Xeon X7350  vs
E5645 
Architecture x86-64 x86-64
Threads 4 12
L2 cache 8 MB 2 MB
L2 cache per core 2 MB/core 0.33 MB/core
Manufacture process 65 nm 32 nm
Max CPUs 32 2
Clock multiplier 11 18
Voltage range 1 - 1.5V 0.75 - 1.35V
Operating temperature Unknown - 66°C Unknown - 76.2°C

overclocking

Overclocked clock speed 2.94 GHz 3.39 GHz
Overclocked clock speed (Water) 5.24 GHz 2.4 GHz
Overclocked clock speed (Air) 2.94 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 FSB QPI
Number of links 1 2
Clock speed 1,066 MHz 2,930 MHz
Intel Xeon X7350
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Intel Xeon E5645
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