CPUBoss Review Our evaluation of 4650U vs 4500U

Performance

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?

TDP

Features

How does CPUBoss rank the features of each product?

Features and specifications that differ between products

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 4650U

Reasons to consider the
Intel Core i7 4650U

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Higher turbo clock speed 3.3 GHz vs 3 GHz Around 10% higher turbo clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better PassMark (Single core) score 1,838 vs 1,596 More than 15% better PassMark (Single core) score
Better geekbench (32-bit) score 5,741 vs 4,860 Around 20% better geekbench (32-bit) score
Front view of Intel Core i7 4500U

Reasons to consider the
Intel Core i7 4500U

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Much higher Maximum Operating Temperature 100 °C vs 72.6 °C Around 40% higher Maximum Operating Temperature
Better performance per watt 41.55 pt/W vs 32.79 pt/W More than 25% better performance per watt
Better performance per dollar 1.59 pt/$ vs 1.2 pt/$ More than 30% better performance per dollar

Benchmarks Real world tests of Core i7 4650U vs 4500U

GeekBench

3D Mark 06 (CPU)

On average I measured a 15% increase in the subset of game tests I was able to run in Taipei, and a 13% increase in performance across our 3DMark tests.
Core i7 4500U | by Anand-Lal-Shimpi (Jun, 2013)

Passmark

If you ran both processors at full tilt nonstop (think looped Cinebench until both batteries die) you'd probably see an even larger gap.
Core i7 4650U | by Anand-Lal-Shimpi (Jul, 2013)

Passmark (Single Core)

PCMark 7 and single-threaded Cinebench show a 3 - 6% increase in performance, while multithreaded Cinebench and x264 show a 3 - 5% decrease in performance.
Core i7 4500U | by Anand-Lal-Shimpi (Jun, 2013)

Specifications Full list of technical specs

summary

Core i7 4650U  vs
4500U 
Clock speed 1.7 GHz 1.8 GHz
Turbo clock speed 3.3 GHz 3 GHz
Cores Dual core Dual core
Is unlocked Yes No
Is hyperthreaded Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has vitualization support Yes Yes
Instruction-set-extensions
MMX
SSE
SSE4.2
AVX
SSE3
SSE2
EM64T
Supplemental SSE3
SSE4.1
SSE4
AVX 2.0
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 15W 15W
Annual home energy cost 3.61 $/year 3.61 $/year
Performance per watt 32.79 pt/W 41.55 pt/W
Typical power consumption 12.19W 12.19W

bus

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

details

Core i7 4650U  vs
4500U 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 0.5 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 4 MB 4 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nms 22 nms
Max CPUs 1 1
Operating temperature Unknown - 72.6°C Unknown - 100°C

gpu

GPU GPU GPU
Label Intel® HD graphics 5000 Intel® HD Graphics 4400
Number of displays supported 3 3
GPU clock speed 200 MHz 200 MHz
Turbo clock speed 1,100 MHz 1,100 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR2-1066
DDR3-1066
DDR3L-1600
DDR2-800
DDR3
DDR3-800
DDR3L-1333
LPDDR3-1600
LPDDR3-1333
DDR2-667
DDR2
DDR
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 16,384 MB 16,384 MB
Intel Core i7 4650U
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Intel Core i7 4500U
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Comments

Showing 1 comment.
Thanks a lot. It's really good to know that 4500U can stand against such high temperatures. I play games on my Acer laptop; when turning graphics to the maximum my CPU temperature rises up to 75C and even a bit more. Now after I read this article, I'm sure my CPU is within a safe range. Thanks CPU Boss!
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