CPUBoss Review Our evaluation of 2820QM vs 3320M


Benchmark performance using all cores

3DMark06 (CPU), Passmark, GeekBench (32-bit) and GeekBench (64-bit)

Single-core Performance

Individual core benchmark performance

Passmark (Single Core)

Power Consumption

How much power does the processor require?



How does CPUBoss rank the features of each product?

Features and specifications that differ between products

CPUBoss Score

Performance, Single-core Performance, Power Consumption and Features

Intel Core i7 2820QM 

CPUBoss recommends the Intel Core i7 2820QM  based on its performance and features.

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Intel Core i7 2820QM

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Front view of Intel Core i7 2820QM

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
More threads 8 vs 4 Twice as many threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Better 3DMark06 CPU score 5,818.5 vs 3,767 Around 55% better 3DMark06 CPU score
Better geekbench (64-bit) score 10,218 vs 5,965 More than 70% better geekbench (64-bit) score
Better PassMark score 6,674 vs 4,021 More than 65% better PassMark score
Better 3DMark11 physics score 4,880 vs 3,150 Around 55% better 3DMark11 physics score
Significantly better performance per dollar 5.92 pt/$ vs 3.44 pt/$ More than 70% better performance per dollar
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better turbo clock speed 1,300 MHz vs 1,200 MHz Around 10% better turbo clock speed
Front view of Intel Core i5 3320M

Reasons to consider the
Intel Core i5 3320M

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Much 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
Lower typical power consumption 28.44W vs 36.56W More than 20% lower typical power consumption
Significantly more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Higher Maximum operating temperature 105 °C vs 100 °C 5% higher Maximum operating temperature
Newer Jun, 2012 vs Jan, 2011 Release date over 1 years later
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

GeekBench (32-bit)

GeekBench (64-bit)

3D Mark 11 (Physics)

3D Mark 06 (CPU)


Passmark (Single Core)

Specifications Full list of technical specs


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


Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 45W 35W
Annual home energy cost 10.84 $/year 8.43 $/year
Performance per watt 17.04 pt/W 14.06 pt/W
Typical power consumption 36.56W 28.44W


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


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


Overclocked clock speed 3.17 GHz 3.07 GHz
Overclocked clock speed (Water) 2.3 GHz 2.6 GHz
Overclocked clock speed (Air) 3.17 GHz 3.07 GHz

integrated graphics

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
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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