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Intel Xeon E5-2420

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Front view of Intel Xeon E5-2420

Differences What are the advantages of each

Front view of Intel Xeon E5-2420

Reasons to consider the
Intel Xeon E5-2420

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly 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
Much lower typical power consumption 77.19W vs 156.35W 2x lower typical power consumption
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More l3 cache 15 MB vs 8 MB Around 90% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better performance per dollar 1.26 pt/$ vs 0.57 pt/$ Around 2.2x better performance per dollar
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly better performance per watt 5.47 pt/W vs 0.96 pt/W Around 5.8x better performance per watt
Better PassMark score 8,570 vs 5,051 Around 70% better PassMark score
Much lower annual home energy cost 22.89 $/year vs 53.98 $/year 2.4x lower annual home energy cost
Supports more RAM 393,216 MB vs 16,384 MB Supports 24x more RAM
More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 8 4 more threads
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Much lower annual commercial energy cost 83.22 $/year vs 157.68 $/year More than 45% lower annual commercial energy cost
Newer May, 2012 vs Jul, 2009 Release date over 2 years later
Slightly better PassMark (Single core) score 1,355 vs 1,226 More than 10% better PassMark (Single core) score
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 Core i7 860

Reasons to consider the
Intel Core i7 860

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Significantly higher turbo clock speed 3.46 GHz vs 2.4 GHz Around 45% higher turbo clock speed
Significantly higher clock speed 2.8 GHz vs 1.9 GHz More than 45% higher clock speed
Much better overclocked clock speed (Air) 4.14 GHz vs 2.36 GHz More than 75% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.15 GHz vs 1.9 GHz Around 2.2x better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E5-2420 vs Core i7 860

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2420
10,344
Core i7 860
7,379

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2420
985,150 MB/s
Core i7 860
134,600 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2420  vs
Core i7 860 
Clock speed 1.9 GHz 2.8 GHz
Turbo clock speed 2.4 GHz 3.46 GHz
Cores Hexa core Quad core
Is unlocked Yes No

features

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

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 53.98 $/year
Annual commercial energy cost 83.22 $/year 157.68 $/year
Performance per watt 5.47 pt/W 0.96 pt/W
Typical power consumption 77.19W 156.35W

bus

Architecture QPI DMI
Number of links 1 1
Transfer rate 7,200 MT/s 2,500 MT/s

details

Xeon E5-2420  vs
Core i7 860 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 15 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 1
Voltage range 0.6 - 1.35V 0.65 - 1.4V

overclocking

Overclock popularity 0 130
Overclocked clock speed 2.36 GHz 4.14 GHz
Overclocked clock speed (Water) 1.9 GHz 4.15 GHz
Overclocked clock speed (Air) 2.36 GHz 4.14 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 31,999.98 MB/s 21,333.32 MB/s
Maximum memory size 393,216 MB 16,384 MB
Intel Xeon E5-2420
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Intel Core i7 860
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