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Intel Xeon E5-2420

Front view of Intel Xeon E5-2420
Front view of Intel Core i7 3770

Intel Core i7 3770

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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
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
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 6 vs 4 2 more cores; run more applications at once
Supports more RAM 393,216 MB vs 32,768 MB Supports 12x more RAM
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
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 3770

Reasons to consider the
Intel Core i7 3770

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Much higher clock speed 3.4 GHz vs 1.9 GHz Around 80% higher clock speed
Much higher turbo clock speed 3.9 GHz vs 2.4 GHz Around 65% higher turbo clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better performance per dollar 2.33 pt/$ vs 1.26 pt/$ More than 85% better performance per dollar
Much better overclocked clock speed (Air) 4.03 GHz vs 2.36 GHz More than 70% better overclocked clock speed (Air)
Significantly better PassMark (Single core) score 2,072 vs 1,355 Around 55% better PassMark (Single core) score
Lower typical power consumption 62.56W vs 77.19W Around 20% lower typical power consumption
Better performance per watt 7.25 pt/W vs 5.47 pt/W More than 30% better performance per watt
Much better overclocked clock speed (Water) 4.32 GHz vs 1.9 GHz More than 2.2x better overclocked clock speed (Water)
Lower annual home energy cost 18.55 $/year vs 22.89 $/year Around 20% lower annual home energy cost
Lower annual commercial energy cost 67.45 $/year vs 83.22 $/year Around 20% lower annual commercial energy cost

Benchmarks Real world tests of Xeon E5-2420 vs Core i7 3770

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2420
10,344
Core i7 3770
12,524

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5-2420
1,754
Core i7 3770
3,236

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2420
985,150 MB/s
Core i7 3770
2,660,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5-2420
9,662
Core i7 3770
12,495

GeekBench

Xeon E5-2420
9,662
Core i7 3770
16,134

PassMark Data courtesy Passmark

Xeon E5-2420
8,570
Core i7 3770
9,449

PassMark (Single Core)

Xeon E5-2420
1,355
Core i7 3770
2,072

Specifications Full list of technical specs

summary

 Xeon E5-2420  vs
Core i7 3770 
Clock speed 1.9 GHz 3.4 GHz
Turbo clock speed 2.4 GHz 3.9 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 77W
Annual home energy cost 22.89 $/year 18.55 $/year
Annual commercial energy cost 83.22 $/year 67.45 $/year
Performance per watt 5.47 pt/W 7.25 pt/W
Typical power consumption 77.19W 62.56W

bus
Architecture QPI DMI
Number of links 1 1
Transfer rate 7,200 MT/s 5,000 MT/s

details

 Xeon E5-2420  vs
Core i7 3770 
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 22 nm
Max CPUs 2 1

overclocking
Overclock popularity 0 8
Overclocked clock speed 2.36 GHz 4.03 GHz
Overclocked clock speed (Water) 1.9 GHz 4.32 GHz
Overclocked clock speed (Air) 2.36 GHz 4.03 GHz

integrated graphics
GPU None GPU
Label N/A Intel® HD Graphics 4000
Latest DirectX N/A 11.x
Number of displays supported N/A 3
GPU clock speed N/A 650 MHz
Turbo clock speed N/A 1,150 MHz
3DMark06 N/A 5,339.9

memory controller
Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 31,999.98 MB/s 25,600 MB/s
Maximum memory size 393,216 MB 32,768 MB
Intel Xeon E5-2420
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Intel Core i7 3770
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