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Differences What are the advantages of each

Front view of Intel Core i7 4850EQ

Reasons to consider the
Intel Core i7 4850EQ

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Newer Jul, 2013 vs Jan, 2011 Release date over 2 years later
Much newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More number of displays supported 3 vs 2 1 more number of displays supported
Much better geekbench 3 Multi-Core score 11,977 vs 9,483 More than 25% better geekbench 3 Multi-Core score
Significantly better geekbench 3 AES single core score 4,180,000 MB/s vs 2,200,000 MB/s 90% better geekbench 3 AES single core score
Better performance per watt 53.48 pt/W vs 18.94 pt/W More than 2.8x better performance per watt
Better performance per dollar 5.39 pt/$ vs 4.28 pt/$ More than 25% better performance per dollar
Front view of Intel Core i7 2820QM

Reasons to consider the
Intel Core i7 2820QM

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Significantly higher clock speed 2.3 GHz vs 1.6 GHz Around 45% higher clock speed
Higher turbo clock speed 3.4 GHz vs 3.2 GHz More than 5% higher turbo clock speed
Much better turbo clock speed 1,300 MHz vs 1,000 MHz 30% better turbo clock speed
Much better overclocked clock speed (Air) 3.03 GHz vs 1.6 GHz Around 90% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.3 GHz vs 1.6 GHz Around 45% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 4850EQ vs 2820QM

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 4850EQ
4,180,000 MB/s
Core i7 2820QM
2,200,000 MB/s

Specifications Full list of technical specs

summary

Core i7 4850EQ  vs
2820QM 
Clock speed 1.6 GHz 2.3 GHz
Turbo clock speed 3.2 GHz 3.4 GHz
Cores Quad core Quad core
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
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 47W 45W
Annual home energy cost 11.32 $/year 10.84 $/year
Performance per watt 53.48 pt/W 18.94 pt/W
Typical power consumption 38.19W 36.56W

bus

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

details

Core i7 4850EQ  vs
2820QM 
Architecture x86-64 x86-64
Threads 8 8
Manufacture process 22 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.6 GHz 3.03 GHz
Overclocked clock speed (Water) 1.6 GHz 2.3 GHz
Overclocked clock speed (Air) 1.6 GHz 3.03 GHz

integrated graphics

GPU GPU GPU
Label Intel® Iris™ Pro graphics 5200 Intel® HD Graphics 3000
Number of displays supported 3 2
GPU clock speed 650 MHz 650 MHz
Turbo clock speed 1,000 MHz 1,300 MHz

memory controller

Memory controller Built-in Built-in
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum memory size 32,768 MB 32,768 MB
Intel Core i7 4850EQ
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Intel Core i7 2820QM
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