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Differences What are the advantages of each

Front view of Intel Xeon X7542

Reasons to consider the
Intel Xeon X7542

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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
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Much more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Front view of Intel Xeon X5650

Reasons to consider the
Intel Xeon X5650

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Much higher Maximum operating temperature 81.3 °C vs 69 °C Around 20% higher Maximum operating temperature
Higher turbo clock speed 3.06 GHz vs 2.8 GHz Around 10% higher turbo clock speed
Much better overclocked clock speed (Air) 3.84 GHz vs 2.67 GHz Around 45% better overclocked clock speed (Air)
More threads 12 vs 6 Twice as many threads
Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
Much better overclocked clock speed (Water) 4.64 GHz vs 2.67 GHz Around 75% 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
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

Features Key features of the Xeon X7542  vs X5650 

clock speed

Xeon X7542
2.67 GHz
Xeon X5650
2.66 GHz

turbo clock speed

Xeon X7542
2.8 GHz
Xeon X5650
3.06 GHz

L2 cache

L3 cache

Xeon X7542
18 MB
Xeon X5650
12 MB

overclocked clock speed (air)

Xeon X7542
2.67 GHz
Xeon X5650
3.84 GHz

overclocked clock speed (water)

Xeon X7542
2.67 GHz
Xeon X5650
4.64 GHz

Specifications Full list of technical specs

summary

Xeon X7542  vs
X5650 
Clock speed 2.67 GHz 2.66 GHz
Turbo clock speed 2.8 GHz 3.06 GHz
Cores Hexa 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
Typical power consumption 105.63W 77.19W

bus

Architecture QPI QPI
Number of links 4 2
Data rate 93,856 MB/s 51,200 MB/s
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz

details

Xeon X7542  vs
X5650 
Threads 6 12
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.33 MB/core
L3 cache 18 MB 12 MB
L3 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 8 2
Voltage range 0.68 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 69°C Unknown - 81.3°C

overclocking

Overclocked clock speed 2.67 GHz 3.84 GHz
Overclocked clock speed (Water) 2.67 GHz 4.64 GHz
Overclocked clock speed (Air) 2.67 GHz 3.84 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
Intel Xeon X7542
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Intel Xeon X5650
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