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Differences What are the advantages of each

Front view of Intel Xeon E5 2650 v2

Reasons to consider the
Intel Xeon E5 2650 v2

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Much more l3 cache 20 MB vs 10 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
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
Much better PassMark score 13,053 vs 6,027 Around 2.2x better PassMark score
More threads 16 vs 4 12 more threads
More cores 8 vs 4 Twice as many cores; run more applications at once
Supports more RAM 786,432 MB vs 384,000 MB Supports more than 2x more RAM
Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
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
Much better overclocked clock speed (Water) 3.41 GHz vs 2.97 GHz Around 15% better overclocked clock speed (Water)
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
Front view of Intel Xeon E5-1603

Reasons to consider the
Intel Xeon E5-1603

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Significantly higher clock speed 2.8 GHz vs 2.6 GHz Around 10% higher clock speed
Much better performance per dollar 4.11 pt/$ vs 0.73 pt/$ Around 5.8x better performance per dollar

Benchmarks Real world tests of Xeon E5 2650 v2 vs E5-1603

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5 2650 v2
1,800,000 MB/s
Xeon E5-1603
1,930,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5 2650 v2  vs
E5-1603 
Clock speed 2.6 GHz 2.8 GHz
Cores Octa core Quad core
Socket type
LGA 2011

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 130W
Annual home energy cost 22.89 $/year 31.32 $/year
Annual commercial energy cost 83.22 $/year 113.88 $/year
Performance per watt 8.85 pt/W 6.26 pt/W
Typical power consumption 77.19W 105.63W

bus

Architecture QPI QPI
Number of links 2 1
Transfer rate 8,000 MT/s 0 MT/s
Clock speed 4,000 MHz 0 MHz

details

Xeon E5 2650 v2  vs
E5-1603 
Architecture x86-64 x86-64
Threads 16 4
L2 cache 2 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 20 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
Operating temperature Unknown - 75°C Unknown - 64°C

overclocking

Overclocked clock speed 2.93 GHz 2.94 GHz
Overclocked clock speed (Water) 3.41 GHz 2.97 GHz
Overclocked clock speed (Air) 2.93 GHz 2.94 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
DDR3-1866
DDR3-1600
DDR3-1333
DDR3-1066
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 59,733.32 MB/s 34,133.32 MB/s
Maximum memory size 786,432 MB 384,000 MB
Intel Xeon E5 2650 v2
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Intel Xeon E5-1603
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