CPUBoss Review Our evaluation of 2820QM vs 3320M among laptop CPUs (over 15W)

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

Differences What are the advantages of each

Front view of Intel Core i7 2820QM

Reasons to consider the
Intel Core i7 2820QM

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Much more l3 cache 8 MB vs 3 MB Around 2.8x more l3 cache; more data can be stored in the l3 cache for quick access later
Much better geekbench 2 (64-bit) score 10,218 vs 5,965 More than 70% better geekbench 2 (64-bit) score
Much better geekbench 2 (32-bit) score 9,002 vs 5,309 Around 70% better geekbench 2 (32-bit) score
More threads 8 vs 4 Twice as many threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Higher turbo clock speed 3.4 GHz vs 3.3 GHz Around 5% higher turbo clock speed
Significantly better geekbench 3 Multi-Core score 9,483 vs 5,486 Around 75% better geekbench 3 Multi-Core score
Significantly better 3DMark06 CPU score 5,818.5 vs 3,767 Around 55% better 3DMark06 CPU score
Better turbo clock speed 1,300 MHz vs 1,200 MHz Around 10% better turbo clock speed
Significantly more l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Front view of Intel Core i5 3320M

Reasons to consider the
Intel Core i5 3320M

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Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 2.6 GHz vs 2.3 GHz Around 15% higher clock speed
More number of displays supported 3 vs 2 1 more number of displays supported
Significantly better CompuBench 1.5 ocean surface simulation score 123.42 fps vs 61.16 fps More than 2x better CompuBench 1.5 ocean surface simulation score
Much higher Maximum operating temperature 105 °C vs 100 °C 5% higher Maximum operating temperature
Lower typical power consumption 28.44W vs 36.56W More than 20% lower typical power consumption
Significantly better performance per dollar 6.04 pt/$ vs 4.29 pt/$ More than 40% better performance per dollar
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Newer Jun, 2012 vs Jan, 2011 Release date over 1 years later
Better PassMark (Single core) score 1,644 vs 1,530 More than 5% better PassMark (Single core) score
Lower annual home energy cost 8.43 $/year vs 10.84 $/year More than 20% lower annual home energy cost
Better overclocked clock speed (Water) 2.6 GHz vs 2.3 GHz Around 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 2820QM vs i5 3320M

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Core i7 2820QM
61.16 fps
Core i5 3320M
123.42 fps

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 2820QM
2,200,000 MB/s
Core i5 3320M
2,140,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 2820QM  vs
i5 3320M 
Clock speed 2.3 GHz 2.6 GHz
Turbo clock speed 3.4 GHz 3.3 GHz
Cores Quad core Dual core
Socket type
BGA 1224
rPGA 988B
Is unlocked No No

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 45W 35W
Annual home energy cost 10.84 $/year 8.43 $/year
Performance per watt 18.96 pt/W 13.57 pt/W
Typical power consumption 36.56W 28.44W

bus

Architecture DMI DMI 2.0
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 2820QM  vs
i5 3320M 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 3 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1
Clock multiplier 23 26
Operating temperature Unknown - 100°C Unknown - 105°C

overclocking

Overclocked clock speed 3.03 GHz 3.07 GHz
Overclocked clock speed (Water) 2.3 GHz 2.6 GHz
Overclocked clock speed (Air) 3.03 GHz 3.07 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 3000 Intel® HD Graphics 4000
Number of displays supported 2 3
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,300 MHz 1,200 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 2820QM
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Intel Core i5 3320M
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