CPUBoss Review Our evaluation of 4300U vs 2520M among laptop 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

Differences What are the advantages of each

Front view of Intel Core i5 4300U

Reasons to consider the
Intel Core i5 4300U

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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
More number of displays supported 3 vs 2 1 more number of displays supported
Much lower typical power consumption 12.19W vs 28.44W 2.3x lower typical power consumption
Better geekbench 3 single core score 2,703 vs 2,424 More than 10% better geekbench 3 single core score
Better performance per watt 45.2 pt/W vs 20.8 pt/W Around 2.2x better performance per watt
Much lower annual home energy cost 3.61 $/year vs 8.43 $/year 2.3x lower annual home energy cost
Slightly better geekbench 2 (32-bit) score 4,971 vs 4,764 Around 5% better geekbench 2 (32-bit) score
Front view of Intel Core i5 2520M

Reasons to consider the
Intel Core i5 2520M

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Significantly higher clock speed 2.5 GHz vs 1.9 GHz More than 30% higher clock speed
Higher turbo clock speed 3.2 GHz vs 2.9 GHz More than 10% higher turbo clock speed
Much higher GPU clock speed 650 MHz vs 200 MHz 3.2x higher GPU clock speed
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly better turbo clock speed 1,300 MHz vs 1,100 MHz Around 20% better turbo clock speed
Much better performance per dollar 5.91 pt/$ vs 2.41 pt/$ Around 2.5x better performance per dollar
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Better overclocked clock speed (Air) 3.04 GHz vs 2.7 GHz Around 15% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 2.5 GHz vs 1.9 GHz More than 30% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i5 4300U vs 2520M

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

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 i5 4300U
3,440,000 MB/s
Core i5 2520M
2,080,000 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 i5 4300U  vs
2520M 
Clock speed 1.9 GHz 2.5 GHz
Turbo clock speed 2.9 GHz 3.2 GHz
Cores Dual core Dual core
Socket type
BGA 1168
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
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 15W 35W
Annual home energy cost 3.61 $/year 8.43 $/year
Performance per watt 45.2 pt/W 20.8 pt/W
Typical power consumption 12.19W 28.44W

bus

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

details

Core i5 4300U  vs
2520M 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 3 MB 3 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Clock multiplier 19 25

overclocking

Overclocked clock speed 2.7 GHz 3.04 GHz
Overclocked clock speed (Water) 1.9 GHz 2.5 GHz
Overclocked clock speed (Air) 2.7 GHz 3.04 GHz

integrated graphics

GPU GPU GPU
Label HD 4400 HD Graphics 3000
Number of displays supported 3 2
GPU clock speed 200 MHz 650 MHz
Turbo clock speed 1,100 MHz 1,300 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3L-1600
DDR3-1333
DDR3-1066
DDR3L-1333
LPDDR3-1333
DDR3
LPDDR3-1600
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 21,333.32 MB/s
Maximum memory size 16,384 MB 16,384 MB
Intel Core i5 4300U
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Intel Core i5 2520M
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