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Differences What are the advantages of each

Front view of Intel Xeon E5-2643

Reasons to consider the
Intel Xeon E5-2643

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Much higher clock speed 3.3 GHz vs 2.4 GHz Around 40% higher clock speed
Much better PassMark (Single core) score 1,793 vs 980 Around 85% better PassMark (Single core) score
Much better overclocked clock speed (Air) 3.3 GHz vs 2.4 GHz Around 40% better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 3.3 GHz vs 2.56 GHz Around 30% better overclocked clock speed (Water)
Front view of Intel Xeon E5-2609

Reasons to consider the
Intel Xeon E5-2609

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Much lower typical power consumption 65W vs 105.63W Around 40% lower typical power consumption
Much lower annual commercial energy cost 70.08 $/year vs 113.88 $/year Around 40% lower annual commercial energy cost
Much lower annual home energy cost 19.27 $/year vs 31.32 $/year Around 40% lower annual home energy cost

Benchmarks Real world tests of Xeon E5-2643 vs E5-2609

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2643
12,252
Xeon E5-2609
9,537

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2643
2,195,000 MB/s
Xeon E5-2609
1,620,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5-2643
16,367
Xeon E5-2609
6,642

GeekBench

Xeon E5-2643
16,367
Xeon E5-2609
6,642

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2643  vs
E5-2609 
Clock speed 3.3 GHz 2.4 GHz
Cores Quad 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 80W
Annual home energy cost 31.32 $/year 19.27 $/year
Annual commercial energy cost 113.88 $/year 70.08 $/year
Performance per watt 7.41 pt/W 8.89 pt/W
Typical power consumption 105.63W 65W

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 393,216 MB 393,216 MB

details

Xeon E5-2643  vs
E5-2609 
Architecture x86-64 x86-64
Threads 8 4
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 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 35 24
Voltage range 0.6 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 73°C Unknown - 70°C

overclocking

Overclocked clock speed 3.3 GHz 2.4 GHz
Overclocked clock speed (Water) 3.3 GHz 2.56 GHz
Overclocked clock speed (Air) 3.3 GHz 2.4 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 2 2
Data rate 64,000 MB/s 51,200 MB/s
Transfer rate 8,000 MT/s 6,400 MT/s
Clock speed 4,000 MHz 3,200 MHz
Intel Xeon E5-2643
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Intel Xeon E5-2609
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