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Core i7-6700K vs i5-10400T


Description
The i7-6700K is based on Skylake architecture while the i5-10400T is based on Comet Lake.

Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the i5-10400T gets 307.2 k points.

Summarizing, the i5-10400T is 1.2 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
a0653
Core
Skylake-S
Comet Lake-S
Architecture
Base frecuency
4 GHz
2 GHz
Boost frecuency
4.2 GHz
3.6 GHz
Socket
LGA 1151
FC-LGA 1200
Cores/Threads
4/8
6/12
TDP
95 W
35 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
256 kB
6x256 kB
Cache L3
8192 kB
12288 kB
Date
May 2015
April 2020
Mean monothread perf.
63.22k points
57.85k points
Mean multithread perf.
254.56k points
307.18k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-6700K
i5-10400T
Test#1 (Integers)
4.07k
4k (x0.98)
Test#2 (FP)
16.62k
14.19k (x0.85)
Test#3 (Generic, ZIP)
5.23k
4.62k (x0.88)
Test#1 (Memory)
6.28k
11.03k (x1.76)
TOTAL
32.2k
33.84k (x1.05)

Multithread

i7-6700K

i5-10400T
Test#1 (Integers)
16.37k
22.77k (x1.39)
Test#2 (FP)
77.34k
96.59k (x1.25)
Test#3 (Generic, ZIP)
25.65k
31.65k (x1.23)
Test#1 (Memory)
10.21k
2.45k (x0.24)
TOTAL
129.57k
153.46k (x1.18)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-6700K
i5-10400T
Test#1 (Integers)
14.73k
12.61k (x0.86)
Test#2 (FP)
21.27k
17.94k (x0.84)
Test#3 (Generic, ZIP)
5.52k
4.83k (x0.88)
Test#1 (Memory)
6.32k
10.81k (x1.71)
TOTAL
47.84k
46.19k (x0.97)

Multithread

i7-6700K

i5-10400T
Test#1 (Integers)
61.09k
74.62k (x1.22)
Test#2 (FP)
99.17k
119.63k (x1.21)
Test#3 (Generic, ZIP)
26.57k
32.65k (x1.23)
Test#1 (Memory)
10.26k
2.52k (x0.25)
TOTAL
197.09k
229.42k (x1.16)

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
i7-6700K
i5-10400T
Test#1 (Integers)
25.78k
22k (x0.85)
Test#2 (FP)
23.08k
19.98k (x0.87)
Test#3 (Generic, ZIP)
5.32k
4.57k (x0.86)
Test#1 (Memory)
9.03k
11.31k (x1.25)
TOTAL
63.22k
57.85k (x0.92)

Multithread

i7-6700K

i5-10400T
Test#1 (Integers)
112.83k
136.69k (x1.21)
Test#2 (FP)
106.86k
135.25k (x1.27)
Test#3 (Generic, ZIP)
25.76k
32.76k (x1.27)
Test#1 (Memory)
9.12k
2.48k (x0.27)
TOTAL
254.56k
307.18k (x1.21)

Performance/W
i7-6700K
i5-10400T
Test#1 (Integers)
1188 points/W
3905 points/W
Test#2 (FP)
1125 points/W
3864 points/W
Test#3 (Generic, ZIP)
271 points/W
936 points/W
Test#1 (Memory)
96 points/W
71 points/W
TOTAL
2680 points/W
8776 points/W

Performance/GHz
i7-6700K
i5-10400T
Test#1 (Integers)
6139 points/GHz
6111 points/GHz
Test#2 (FP)
5495 points/GHz
5549 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1268 points/GHz
Test#1 (Memory)
2150 points/GHz
3141 points/GHz
TOTAL
15052 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