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Differences What are the advantages of each

Front view of Intel Xeon E5-1650

Reasons to consider the
Intel Xeon E5-1650

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Much higher clock speed 3.2 GHz vs 2.8 GHz Around 15% higher clock speed
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 11,790 vs 6,027 More than 95% better PassMark score
More cores 6 vs 4 2 more cores; run more applications at once
Much better overclocked clock speed (Air) 4.53 GHz vs 2.94 GHz Around 55% better overclocked clock speed (Air)
More threads 12 vs 4 Three times as many threads
More l3 cache 12 MB vs 10 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better overclocked clock speed (Water) 4.7 GHz vs 2.97 GHz Around 60% better overclocked clock speed (Water)
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 E5-1603

Reasons to consider the
Intel Xeon E5-1603

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Supports more RAM 384,000 MB vs 262,144 MB Supports more than 45% more RAM
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core

Benchmarks Real world tests of Xeon E5-1650 vs E5-1603

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-1650
16,658
Xeon E5-1603
7,685

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-1650
2,210,000 MB/s
Xeon E5-1603
1,930,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5-1650
18,198
Xeon E5-1603
7,699

GeekBench

Xeon E5-1650
19,270
Xeon E5-1603
7,699

PassMark Data courtesy Passmark

Xeon E5-1650
11,790
Xeon E5-1603
6,027

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-1650  vs
E5-1603 
Clock speed 3.2 GHz 2.8 GHz
Cores Hexa 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
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 130W 130W
Annual home energy cost 31.32 $/year 31.32 $/year
Annual commercial energy cost 113.88 $/year 113.88 $/year
Performance per watt 7.9 pt/W 6.26 pt/W
Typical power consumption 105.63W 105.63W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 34,133.32 MB/s
Maximum memory size 262,144 MB 384,000 MB

details

Xeon E5-1650  vs
E5-1603 
Architecture x86-64 x86-64
Threads 12 4
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 10 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Voltage range 0.6 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 64°C Unknown - 64°C

overclocking

Overclocked clock speed 4.53 GHz 2.94 GHz
Overclocked clock speed (Water) 4.7 GHz 2.97 GHz
Overclocked clock speed (Air) 4.53 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

bus

Architecture QPI QPI
Number of links 0 1
Transfer rate 0 MT/s 0 MT/s
Clock speed 0 MHz 0 MHz
Intel Xeon E5-1650
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Intel Xeon E5-1603
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