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Differences What are the advantages of each

Front view of Intel Xeon L7445

Reasons to consider the
Intel Xeon L7445

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Much more l2 cache 12 MB vs 1 MB 12x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 32 vs 1 31 supports more CPUs in SMP configuration
Much more l2 cache per core 3 MB/core vs 0.25 MB/core 12x more l2 cache per core
More l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Front view of Intel Core i7 3840QM

Reasons to consider the
Intel Core i7 3840QM

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Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 2.8 GHz vs 2.13 GHz More than 30% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much higher Maximum operating temperature 105 °C vs 65 °C More than 60% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.88 GHz vs 2.13 GHz More than 80% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Newer Sep, 2012 vs Sep, 2008 Release date over 4 years later
More threads 8 vs 4 Twice as many threads
Slightly lower typical power consumption 36.56W vs 40.63W 10% lower typical power consumption
Better overclocked clock speed (Water) 2.8 GHz vs 2.13 GHz More than 30% better overclocked clock speed (Water)
Slightly lower annual home energy cost 10.84 $/year vs 12.04 $/year Around 10% lower annual home energy cost
Slightly lower annual commercial energy cost 39.42 $/year vs 43.8 $/year Around 10% lower annual commercial energy cost

Features Key features of the Xeon L7445  vs Core i7 3840QM 

clock speed

Xeon L7445
2.13 GHz
Core i7 3840QM
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon L7445
2.13 GHz
Core i7 3840QM
3.88 GHz

overclocked clock speed (water)

Xeon L7445
2.13 GHz
Core i7 3840QM
2.8 GHz

Specifications Full list of technical specs

summary

Xeon L7445  vs
Core i7 3840QM 
Clock speed 2.13 GHz 2.8 GHz
Cores Quad core Quad core
Socket type
604
rPGA 988B
BGA 1224

features

Has a NX bit Yes Yes
Supports trusted computing No 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 50W 45W
Annual home energy cost 12.04 $/year 10.84 $/year
Annual commercial energy cost 43.8 $/year 39.42 $/year
Typical power consumption 40.63W 36.56W

details

Xeon L7445  vs
Core i7 3840QM 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 12 MB 1 MB
L2 cache per core 3 MB/core 0.25 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 32 1
Clock multiplier 8 28
Operating temperature Unknown - 65°C Unknown - 105°C

overclocking

Overclocked clock speed 2.13 GHz 3.88 GHz
Overclocked clock speed (Water) 2.13 GHz 2.8 GHz
Overclocked clock speed (Air) 2.13 GHz 3.88 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4000
Number of displays supported N/A 3
GPU clock speed N/A 650 MHz
Turbo clock speed N/A 1,300 MHz

bus

Architecture FSB DMI
Number of links 1 1
Intel Xeon L7445
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Intel Core i7 3840QM
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