CPUBoss Review Our evaluation of 2603 v2 vs 3820 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.4

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 3820 

CPUBoss recommends the Intel Core i7 3820  based on its performance, single-core performance and value.

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VS
Front view of Intel Core i7 3820

Intel Core i7 3820

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Xeon E5 2603 v2

Reasons to consider the
Intel Xeon E5 2603 v2

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Much lower typical power consumption 65W vs 139.6W 2.1x lower typical power consumption
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports more RAM 786,432 MB vs 65,771.52 MB Supports around 12x more RAM
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual home energy cost 19.27 $/year vs 49.49 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 70.08 $/year vs 138.93 $/year Around 50% lower annual commercial energy cost
Newer Jul, 2013 vs Feb, 2012 Release date over 1 years later
Higher Maximum operating temperature 71 °C vs 66.8 °C More than 5% higher Maximum operating temperature
Front view of Intel Core i7 3820

Reasons to consider the
Intel Core i7 3820

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much higher clock speed 3.6 GHz vs 1.8 GHz 2x higher clock speed
Much higher turbo clock speed 3.8 GHz vs 1.8 GHz More than 2x higher turbo clock speed
Much better performance per dollar 4.08 pt/$ vs 0.65 pt/$ More than 6.2x better performance per dollar
Much better overclocked clock speed (Air) 4.68 GHz vs 1.83 GHz More than 2.5x better overclocked clock speed (Air)
Significantly better PassMark (Single core) score 1,943 vs 983 Around 2x better PassMark (Single core) score
Significantly better PassMark score 8,998 vs 3,746 Around 2.5x better PassMark score
Significantly better performance per watt 6.18 pt/W vs 1.65 pt/W More than 3.8x better performance per watt
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 4.71 GHz vs 1.8 GHz More than 2.5x better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E5 2603 v2 vs Core i7 3820

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5 2603 v2  vs
Core i7 3820 
Clock speed 1.8 GHz 3.6 GHz
Turbo clock speed 1.8 GHz 3.8 GHz
Cores Quad core Quad core
Socket type
LGA 2011
Is unlocked No Yes

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
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 80W 130W
Annual home energy cost 19.27 $/year 49.49 $/year
Annual commercial energy cost 70.08 $/year 138.93 $/year
Performance per watt 1.65 pt/W 6.18 pt/W
Typical power consumption 65W 139.6W

bus

Architecture QPI DMI 2.0
Number of links 2 1
Transfer rate 6,400 MT/s 5,000 MT/s

details

Xeon E5 2603 v2  vs
Core i7 3820 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 10 MB 10 MB
L3 cache per core 2.5 MB/core 2.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 2 1
Clock multiplier 18 36
Operating temperature Unknown - 71°C Unknown - 66.8°C

overclocking

Overclocked clock speed 1.83 GHz 4.68 GHz
Overclocked clock speed (Water) 1.8 GHz 4.71 GHz
Overclocked clock speed (Air) 1.83 GHz 4.68 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
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Quad Channel Quad Channel
Supports ECC Yes No
Maximum bandwidth 25,600 MB/s 51,200 MB/s
Maximum memory size 786,432 MB 65,771.52 MB
Intel Xeon E5 2603 v2
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Intel Core i7 3820
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