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Differences What are the advantages of each

Front view of Intel Xeon E7530

Reasons to consider the
Intel Xeon E7530

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Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 8 4 more threads
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
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 E5620

Reasons to consider the
Intel Xeon E5620

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Much higher clock speed 2.4 GHz vs 1.87 GHz Around 30% higher clock speed
Significantly higher turbo clock speed 2.66 GHz vs 2.13 GHz Around 25% higher turbo clock speed
Much better overclocked clock speed (Air) 3.75 GHz vs 2 GHz Around 90% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.33 GHz vs 1.87 GHz More than 2.2x better overclocked clock speed (Water)
Lower typical power consumption 65W vs 85.31W Around 25% lower typical power consumption
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Lower annual commercial energy cost 70.08 $/year vs 91.98 $/year Around 25% lower annual commercial energy cost
Lower annual home energy cost 19.27 $/year vs 25.29 $/year Around 25% lower annual home energy cost

Features Key features of the Xeon E7530  vs E5620 

clock speed

Xeon E7530
1.87 GHz
Xeon E5620
2.4 GHz

turbo clock speed

Xeon E7530
2.13 GHz
Xeon E5620
2.66 GHz

L2 cache

L3 cache

Xeon E7530
12 MB
Xeon E5620
12 MB

overclocked clock speed (air)

Xeon E7530
2 GHz
Xeon E5620
3.75 GHz

overclocked clock speed (water)

Xeon E7530
1.87 GHz
Xeon E5620
4.33 GHz

Specifications Full list of technical specs

summary

Xeon E7530  vs
E5620 
Clock speed 1.87 GHz 2.4 GHz
Turbo clock speed 2.13 GHz 2.66 GHz
Cores Hexa core Quad 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 105W 80W
Annual home energy cost 25.29 $/year 19.27 $/year
Annual commercial energy cost 91.98 $/year 70.08 $/year
Typical power consumption 85.31W 65W

bus

Architecture QPI QPI
Number of links 4 2
Data rate 93,856 MB/s 46,928 MB/s
Transfer rate 5,860 MT/s 5,860 MT/s
Clock speed 2,930 MHz 2,930 MHz

details

Xeon E7530  vs
E5620 
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 12 MB
L3 cache per core 2 MB/core 3 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 4 2
Voltage range 0.68 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 64°C Unknown - 77.6°C

overclocking

Overclocked clock speed 2 GHz 3.75 GHz
Overclocked clock speed (Water) 1.87 GHz 4.33 GHz
Overclocked clock speed (Air) 2 GHz 3.75 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 E7530
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Intel Xeon E5620
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