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Core i7-4600U vs i7-8650U


Description
The i7-4600U is based on Haswell architecture while the i7-8650U is based on Kaby Lake.

Using the multithread performance as a reference, the i7-4600U gets a score of 64.5 k points while the i7-8650U gets 173.5 k points.

Summarizing, the i7-8650U is 2.7 times faster than the i7-4600U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
40651
806ea
Core
Haswell
Kaby Lake-R
Architecture
Base frecuency
2.1 GHz
1.9 GHz
Boost frecuency
3.3 GHz
4.2 GHz
Socket
BGA1168
BGA 1356
Cores/Threads
2/4
4/8
TDP
15 W
15 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
4096 kB
8192 kB
Date
September 2013
August 2017
Mean monothread perf.
28.98k points
55.86k points
Mean multithread perf.
64.55k points
173.49k points

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-4600U
i7-8650U
Test#1 (Integers)
14.37k
21.61k (x1.5)
Test#2 (FP)
8.31k
19.69k (x2.37)
Test#3 (Generic, ZIP)
3.35k
4.61k (x1.38)
Test#1 (Memory)
2.96k
9.95k (x3.37)
TOTAL
28.98k
55.86k (x1.93)

Multithread

i7-4600U

i7-8650U
Test#1 (Integers)
31.32k
78.38k (x2.5)
Test#2 (FP)
20.17k
72.02k (x3.57)
Test#3 (Generic, ZIP)
8.02k
16.95k (x2.11)
Test#1 (Memory)
5.03k
6.15k (x1.22)
TOTAL
64.55k
173.49k (x2.69)

Performance/W
i7-4600U
i7-8650U
Test#1 (Integers)
2088 points/W
5225 points/W
Test#2 (FP)
1345 points/W
4802 points/W
Test#3 (Generic, ZIP)
535 points/W
1130 points/W
Test#1 (Memory)
336 points/W
410 points/W
TOTAL
4303 points/W
11566 points/W

Performance/GHz
i7-4600U
i7-8650U
Test#1 (Integers)
4353 points/GHz
5146 points/GHz
Test#2 (FP)
2517 points/GHz
4689 points/GHz
Test#3 (Generic, ZIP)
1015 points/GHz
1097 points/GHz
Test#1 (Memory)
896 points/GHz
2368 points/GHz
TOTAL
8781 points/GHz
13300 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4