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Differences What are the advantages of each

Front view of Intel Xeon E5-2603

Reasons to consider the
Intel Xeon E5-2603

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More l3 cache 10 MB vs 4 MB 2.5x more l3 cache; more data can be stored in the l3 cache for quick access later
Higher clock speed 1.8 GHz vs 1.6 GHz More than 10% higher clock speed
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Supports more RAM 393,216 MB vs 8,202.24 MB Supports around 48x more RAM
More cores 4 vs 2 Twice as many cores; run more applications at once
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Better overclocked clock speed (Air) 1.91 GHz vs 1.6 GHz Around 20% better overclocked clock speed (Air)
Newer Mar, 2012 vs Feb, 2011 Release date over 1 years later
Better overclocked clock speed (Water) 1.84 GHz vs 1.6 GHz More than 15% better overclocked clock speed (Water)
Front view of Intel Core i7 2657M

Reasons to consider the
Intel Core i7 2657M

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 13.81W vs 65W 4.7x lower typical power consumption
Much higher Maximum operating temperature 100 °C vs 70 °C Around 45% higher Maximum operating temperature
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual home energy cost 4.1 $/year vs 19.27 $/year 4.7x lower annual home energy cost
Much lower annual commercial energy cost 14.89 $/year vs 70.08 $/year 4.7x lower annual commercial energy cost

Features Key features of the Xeon E5-2603  vs Core i7 2657M 

clock speed

Xeon E5-2603
1.8 GHz
Core i7 2657M
1.6 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E5-2603
1.91 GHz
Core i7 2657M
1.6 GHz

overclocked clock speed (water)

Xeon E5-2603
1.84 GHz
Core i7 2657M
1.6 GHz

Specifications Full list of technical specs

summary

Xeon E5-2603  vs
Core i7 2657M 
Clock speed 1.8 GHz 1.6 GHz
Cores Quad core Dual core
Socket type
LGA 2011
BGA 1023

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 80W 17W
Annual home energy cost 19.27 $/year 4.1 $/year
Annual commercial energy cost 70.08 $/year 14.89 $/year
Typical power consumption 65W 13.81W

bus

Architecture QPI DMI
Number of links 2 1
Transfer rate 6,400 MT/s 5,000 MT/s

details

Xeon E5-2603  vs
Core i7 2657M 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 10 MB 4 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 1
Clock multiplier 18 16
Operating temperature Unknown - 70°C Unknown - 100°C

overclocking

Overclocked clock speed 1.91 GHz 1.6 GHz
Overclocked clock speed (Water) 1.84 GHz 1.6 GHz
Overclocked clock speed (Air) 1.91 GHz 1.6 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 3000
Number of displays supported N/A 2
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Quad Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 34,133.32 MB/s 21,333.32 MB/s
Maximum memory size 393,216 MB 8,202.24 MB
Intel Xeon E5-2603
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Intel Core i7 2657M
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