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Differences What are the advantages of each

Front view of Intel Xeon E7-2803

Reasons to consider the
Intel Xeon E7-2803

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Supports more RAM 1,048,576 MB vs 393,216 MB Supports around 2.8x more RAM
More l3 cache per core 3 MB/core vs 2.5 MB/core 20% more l3 cache per core
Lower typical power consumption 85.31W vs 93.44W Around 10% lower typical power consumption
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Lower annual commercial energy cost 91.98 $/year vs 100.74 $/year Around 10% lower annual commercial energy cost
Lower annual home energy cost 25.29 $/year vs 27.7 $/year Around 10% lower annual home energy cost
Front view of Intel Xeon E5-2670

Reasons to consider the
Intel Xeon E5-2670

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Much higher clock speed 2.6 GHz vs 1.73 GHz More than 50% higher clock speed
More l3 cache 20 MB vs 18 MB More than 10% more l3 cache; more data can be stored in the l3 cache for quick access later
Much higher Maximum operating temperature 80 °C vs 64 °C 25% higher Maximum operating temperature
More threads 16 vs 12 4 more threads
Newer Mar, 2012 vs Apr, 2011 Release date 11 months later

Features Key features of the Xeon E7-2803  vs E5-2670 

clock speed

Xeon E7-2803
1.73 GHz
Xeon E5-2670
2.6 GHz

L2 cache

L3 cache


Specifications Full list of technical specs


Xeon E7-2803  vs
Clock speed 1.73 GHz 2.6 GHz
Cores Hexa core Octa core
Socket type
LGA 1567
LGA 2011


Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 105W 115W
Annual home energy cost 25.29 $/year 27.7 $/year
Annual commercial energy cost 91.98 $/year 100.74 $/year
Typical power consumption 85.31W 93.44W


Architecture QPI QPI
Number of links 1 2
Data rate 19,200 MB/s 64,000 MB/s
Transfer rate 4,800 MT/s 8,000 MT/s
Clock speed 2,400 MHz 4,000 MHz


Xeon E7-2803  vs
Architecture x86-64 x86-64
Threads 12 16
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 18 MB 20 MB
L3 cache per core 3 MB/core 2.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 13 33
Operating temperature Unknown - 64°C Unknown - 80°C

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
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 51,200 MB/s
Maximum memory size 1,048,576 MB 393,216 MB
Intel Xeon E7-2803
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Intel Xeon E5-2670
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