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Differences What are the advantages of each

Front view of Intel Xeon E7-2870

Reasons to consider the
Intel Xeon E7-2870

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Much more l3 cache 30 MB vs 20 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache 3 MB vs 2 MB 50% more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 20 vs 16 4 more threads
More l3 cache per core 3 MB/core vs 2.5 MB/core 20% more l3 cache per core
More l2 cache per core 0.3 MB/core vs 0.25 MB/core Around 20% more l2 cache per core
Front view of Intel Xeon E5-2689

Reasons to consider the
Intel Xeon E5-2689

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Significantly higher clock speed 2.6 GHz vs 2.4 GHz Around 10% higher clock speed
Much better performance per watt 10.97 pt/W vs 0.43 pt/W More than 25.5x better performance per watt
Lower typical power consumption 93.44W vs 105.63W More than 10% lower typical power consumption
Lower annual commercial energy cost 100.74 $/year vs 113.88 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 27.7 $/year vs 31.32 $/year More than 10% lower annual home energy cost
Newer Mar, 2012 vs Apr, 2011 Release date 11 months later

Benchmarks Real world tests of Xeon E7-2870 vs E5-2689

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E7-2870
2,429
Xeon E5-2689
36,294

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E7-2870
963.6 MB/s
Xeon E5-2689
2,360,000 MB/s

Specifications Full list of technical specs

summary

Xeon E7-2870  vs
E5-2689 
Clock speed 2.4 GHz 2.6 GHz
Cores Deca core Octa core
Socket type
LGA 1567
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
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

details

Xeon E7-2870  vs
E5-2689 
Threads 20 16
L2 cache 3 MB 2 MB
L2 cache per core 0.3 MB/core 0.25 MB/core
L3 cache 30 MB 20 MB
L3 cache per core 3 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2

power consumption

TDP 130W 115W
Annual home energy cost 31.32 $/year 27.7 $/year
Annual commercial energy cost 113.88 $/year 100.74 $/year
Performance per watt 0.43 pt/W 10.97 pt/W
Typical power consumption 105.63W 93.44W

bus

Architecture QPI QPI
Number of links 1 2
Data rate 25,600 MB/s 64,000 MB/s
Transfer rate 6,400 MT/s 8,000 MT/s
Clock speed 3,200 MHz 4,000 MHz
Intel Xeon E7-2870
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Intel Xeon E5-2689
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