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Differences What are the advantages of each

Front view of Intel Xeon E5-2690

Reasons to consider the
Intel Xeon E5-2690

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Much more l3 cache 20 MB vs 8 MB 2.5x 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
More cores 8 vs 4 Twice as many cores; run more applications at once
Much better performance per watt 7.64 pt/W vs 3.52 pt/W Around 2.2x better performance per watt
More threads 16 vs 8 Twice as many threads
Supports more RAM 393,216 MB vs 33,556.48 MB Supports around 11.8x more RAM
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Front view of Intel Xeon E3-1270 v2

Reasons to consider the
Intel Xeon E3-1270 v2

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Much higher clock speed 3.5 GHz vs 2.9 GHz More than 20% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 56.06W vs 109.69W Around 50% lower typical power consumption
Higher turbo clock speed 3.9 GHz vs 3.8 GHz Around 5% higher turbo clock speed
Newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower annual commercial energy cost 60.44 $/year vs 118.26 $/year Around 50% lower annual commercial energy cost
Much lower annual home energy cost 16.62 $/year vs 32.52 $/year Around 50% lower annual home energy cost

Benchmarks Real world tests of Xeon E5-2690 vs E3-1270 v2

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 E5-2690
1,975,000 MB/s
Xeon E3-1270 v2
2,620 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2690  vs
E3-1270 v2 
Clock speed 2.9 GHz 3.5 GHz
Turbo clock speed 3.8 GHz 3.9 GHz
Cores Octa core Quad core
Socket type
LGA 2011
LGA 1155

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 135W 69W
Annual home energy cost 32.52 $/year 16.62 $/year
Annual commercial energy cost 118.26 $/year 60.44 $/year
Performance per watt 7.64 pt/W 3.52 pt/W
Typical power consumption 109.69W 56.06W

bus

Architecture QPI DMI
Number of links 2 1
Transfer rate 8,000 MT/s 5,000 MT/s

details

Xeon E5-2690  vs
E3-1270 v2 
Architecture x86-64 x86-64
Threads 16 8
L2 cache 2 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 20 MB 8 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 2 1
Clock multiplier 38 35

overclocking

Overclock popularity 7 0

integrated graphics

GPU None GPU
Number of displays supported N/A 0

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 25,600 MB/s
Maximum memory size 393,216 MB 33,556.48 MB
Intel Xeon E5-2690
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Intel Xeon E3-1270 v2
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