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Differences What are the advantages of each

Front view of Intel Xeon 5600 L5645

Reasons to consider the
Intel Xeon 5600 L5645

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Significantly 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 l3 cache 12 MB vs 6 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More threads 12 vs 4 Three times as many threads
More cores 6 vs 4 2 more cores; run more applications at once
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Slightly lower typical power consumption 48.75W vs 52.81W 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
Slightly lower annual home energy cost 14.45 $/year vs 15.66 $/year Around 10% lower annual home energy cost
Slightly lower annual commercial energy cost 52.56 $/year vs 56.94 $/year Around 10% lower annual commercial energy cost
Front view of Intel Core i5 6500

Reasons to consider the
Intel Core i5 6500

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Significantly higher clock speed 3.2 GHz vs 2.4 GHz Around 35% higher clock speed
Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 3.77 GHz vs 2.4 GHz More than 55% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.29 GHz vs 2.4 GHz Around 80% better overclocked clock speed (Water)

Features Key features of the Xeon 5600 L5645  vs Core i5 6500 

clock speed

Xeon 5600 L5645
2.4 GHz
Core i5 6500
3.2 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon 5600 L5645
2.4 GHz
Core i5 6500
3.77 GHz

overclocked clock speed (water)

Xeon 5600 L5645
2.4 GHz
Core i5 6500
4.29 GHz

Specifications Full list of technical specs

summary

Xeon 5600 L5645  vs
Core i5 6500 
Clock speed 2.4 GHz 3.2 GHz
Cores Hexa core Quad core

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
AVX 2.0
Supports dynamic frequency scaling Yes Yes

bus

Architecture QPI FSB
Number of links 2 1
Transfer rate 5,860 MT/s 8,000 MT/s

details

Xeon 5600 L5645  vs
Core i5 6500 
Threads 12 4
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 14 nm
Max CPUs 2 1

overclocking

Overclocked clock speed 2.4 GHz 3.77 GHz
Overclocked clock speed (Water) 2.4 GHz 4.29 GHz
Overclocked clock speed (Air) 2.4 GHz 3.77 GHz

power consumption

TDP 60W 65W
Annual home energy cost 14.45 $/year 15.66 $/year
Annual commercial energy cost 52.56 $/year 56.94 $/year
Typical power consumption 48.75W 52.81W
Intel Xeon 5600 L5645
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Intel Core i5 6500
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