CPUBoss Review Our evaluation of 920XM vs 920 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS
Front view of Intel Core i7 920

Intel Core i7 920

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Core i7 920XM

Reasons to consider the
Intel Core i7 920XM

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much lower typical power consumption 44.69W vs 135.63W 3x lower typical power consumption
Higher turbo clock speed 3.2 GHz vs 2.93 GHz Around 10% higher turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual home energy cost 13.25 $/year vs 48.38 $/year 3.7x lower annual home energy cost
Much lower annual commercial energy cost 48.18 $/year vs 134.55 $/year 2.8x lower annual commercial energy cost
Better performance per watt 3.33 pt/W vs 1.21 pt/W More than 2.8x better performance per watt
Better geekbench 3 Multi-Core score 7,749 vs 7,014 More than 10% better geekbench 3 Multi-Core score
Better geekbench 3 single core score 2,195 vs 1,959 More than 10% better geekbench 3 single core score
Newer Sep, 2009 vs Oct, 2008 Release date 11 months later
Front view of Intel Core i7 920

Reasons to consider the
Intel Core i7 920

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Much better 3DMark06 CPU score 4,727.5 vs 3,797 Around 25% better 3DMark06 CPU score
Higher clock speed 2.66 GHz vs 2 GHz Around 35% higher clock speed
Much better performance per dollar 0.61 pt/$ vs 0.17 pt/$ Around 3.5x better performance per dollar
Better overclocked clock speed (Air) 4.22 GHz vs 3.44 GHz Around 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.24 GHz vs 2 GHz More than 2x better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 920XM vs 920

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 920XM
148,800 MB/s
Core i7 920
143,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 920XM  vs
920 
Clock speed 2 GHz 2.66 GHz
Turbo clock speed 3.2 GHz 2.93 GHz
Cores Quad core Quad core
Socket type
rPGA 988A
LGA 1366
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 55W 130W
Annual home energy cost 13.25 $/year 48.38 $/year
Annual commercial energy cost 48.18 $/year 134.55 $/year
Performance per watt 3.33 pt/W 1.21 pt/W
Typical power consumption 44.69W 135.63W

bus

Architecture DMI QPI
Number of links 1 1
Transfer rate 2,500 MT/s 4,800 MT/s

details

Core i7 920XM  vs
920 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 45 nm
Transistor count 774,000,000 731,000,000
Max CPUs 1 1
Clock multiplier 15 20

overclocking

Overclocked clock speed 3.44 GHz 4.22 GHz
Overclocked clock speed (Water) 2 GHz 4.24 GHz
Overclocked clock speed (Air) 3.44 GHz 4.22 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Dual Channel Triple Channel
Supports ECC No No
Maximum bandwidth 21,333.32 MB/s 25,599.99 MB/s
Intel Core i7 920XM
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Intel Core i7 920
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