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Intel Xeon L7545

Front view of Intel Xeon L7545
Front view of Intel Core i7 975

Intel Core i7 975

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Differences What are the advantages of each

Front view of Intel Xeon L7545

Reasons to consider the
Intel Xeon L7545

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Much lower typical power consumption 77.19W vs 212W 2.7x lower typical power consumption
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
Significantly more l3 cache 18 MB vs 8 MB 2.2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much lower annual home energy cost 22.89 $/year vs 82.69 $/year 3.6x lower annual home energy cost
Significantly more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Much lower annual commercial energy cost 83.22 $/year vs 211.12 $/year 2.5x lower annual commercial energy cost
More cores 6 vs 4 2 more cores; run more applications at once
More threads 12 vs 8 4 more threads
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Newer Mar, 2010 vs Jun, 2009 Release date 9 months later
Front view of Intel Core i7 975

Reasons to consider the
Intel Core i7 975

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Much higher clock speed 3.33 GHz vs 1.87 GHz Around 80% higher clock speed
Significantly higher turbo clock speed 3.6 GHz vs 2.53 GHz More than 40% higher turbo clock speed
Much better overclocked clock speed (Air) 4.46 GHz vs 1.87 GHz Around 2.5x better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.45 GHz vs 1.87 GHz Around 2.5x better overclocked clock speed (Water)

Features Key features of the Xeon L7545  vs Core i7 975 

clock speed

Xeon L7545
1.87 GHz
Core i7 975
3.33 GHz

turbo clock speed

Xeon L7545
2.53 GHz
Core i7 975
3.6 GHz

L2 cache

Xeon L7545
2 MB
Core i7 975
1 MB

L3 cache

Xeon L7545
18 MB
Core i7 975
8 MB

overclocked clock speed (air)

Xeon L7545
1.87 GHz
Core i7 975
4.46 GHz

overclocked clock speed (water)

Xeon L7545
1.87 GHz
Core i7 975
4.45 GHz

Specifications Full list of technical specs

summary

 Xeon L7545  vs
Core i7 975 
Clock speed 1.87 GHz 3.33 GHz
Turbo clock speed 2.53 GHz 3.6 GHz
Cores Hexa core Quad core
Socket type
LGA 1567
LGA 1366

features
Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 95W 130W
Annual home energy cost 22.89 $/year 82.69 $/year
Annual commercial energy cost 83.22 $/year 211.12 $/year
Typical power consumption 77.19W 212W

bus
Architecture QPI QPI
Number of links 4 1
Data rate 93,856 MB/s 25,600 MB/s
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz

details

 Xeon L7545  vs
Core i7 975 
Threads 12 8
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 18 MB 8 MB
L3 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 8 1
Voltage range 0.68 - 1.35V 0.8 - 1.38V
Operating temperature Unknown - 70°C 5 - 67.9°C

overclocking
Overclocked clock speed 1.87 GHz 4.46 GHz
Overclocked clock speed (Water) 1.87 GHz 4.45 GHz
Overclocked clock speed (Air) 1.87 GHz 4.46 GHz

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
Intel Xeon L7545
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Intel Core i7 975
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