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Core i7-7660U vs i5-10400T


Description
The i7-7660U is based on Kaby Lake architecture while the i5-10400T is based on Comet Lake.

Using the multithread performance as a reference, the i7-7660U gets a score of 132.8 k points while the i5-10400T gets 307.2 k points.

Summarizing, the i5-10400T is 2.3 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
a0653
Core
Kaby Lake-U
Comet Lake-S
Architecture
Base frecuency
2.5 GHz
2 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
BGA 1356
FC-LGA 1200
Cores/Threads
2/4
6/12
TDP
15 W
35 W
Cache L1 (d+i)
2x32+2x32 kB
6x32+6x32 kB
Cache L2
2x256 kB
6x256 kB
Cache L3
4096 kB
12288 kB
Date
January 2017
April 2020
Mean monothread perf.
57.46k points
57.85k points
Mean multithread perf.
132.81k points
307.18k 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
i7-7660U
i5-10400T
Test#1 (Integers)
22.46k
22k (x0.98)
Test#2 (FP)
19.29k
19.98k (x1.04)
Test#3 (Generic, ZIP)
4.77k
4.57k (x0.96)
Test#1 (Memory)
10.94k
11.31k (x1.03)
TOTAL
57.46k
57.85k (x1.01)

Multithread

i7-7660U

i5-10400T
Test#1 (Integers)
56.67k
136.69k (x2.41)
Test#2 (FP)
46.95k
135.25k (x2.88)
Test#3 (Generic, ZIP)
12.36k
32.76k (x2.65)
Test#1 (Memory)
16.84k
2.48k (x0.15)
TOTAL
132.81k
307.18k (x2.31)

Performance/W
i7-7660U
i5-10400T
Test#1 (Integers)
3778 points/W
3905 points/W
Test#2 (FP)
3130 points/W
3864 points/W
Test#3 (Generic, ZIP)
824 points/W
936 points/W
Test#1 (Memory)
1122 points/W
71 points/W
TOTAL
8854 points/W
8776 points/W

Performance/GHz
i7-7660U
i5-10400T
Test#1 (Integers)
5614 points/GHz
6111 points/GHz
Test#2 (FP)
4823 points/GHz
5549 points/GHz
Test#3 (Generic, ZIP)
1193 points/GHz
1268 points/GHz
Test#1 (Memory)
2735 points/GHz
3141 points/GHz
TOTAL
14365 points/GHz
16069 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