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Core i7-8700k vs i5-10400T


Description
The i7-8700k is based on Coffee Lake architecture while the i5-10400T is based on Comet Lake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i5-10400T gets 307.2 k points.

Summarizing, the i7-8700k is 1.4 times faster than the i5-10400T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
a0653
Core
Coffee Lake-S
Comet Lake-S
Architecture
Base frecuency
3.7 GHz
2 GHz
Boost frecuency
4.7 GHz
3.6 GHz
Socket
LGA 1151
FC-LGA 1200
Cores/Threads
6/12
6/12
TDP
95 W
35 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
12288 kB
Date
October 2017
April 2020
Mean monothread perf.
80.6k points
57.85k points
Mean multithread perf.
443.77k 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
i7-8700k
i5-10400T
Test#1 (Integers)
4.13k
4k (x0.97)
Test#2 (FP)
16.96k
14.19k (x0.84)
Test#3 (Generic, ZIP)
5.56k
4.62k (x0.83)
Test#1 (Memory)
12.85k
11.03k (x0.86)
TOTAL
39.5k
33.84k (x0.86)

Multithread

i7-8700k

i5-10400T
Test#1 (Integers)
24.01k
22.77k (x0.95)
Test#2 (FP)
108.69k
96.59k (x0.89)
Test#3 (Generic, ZIP)
36.62k
31.65k (x0.86)
Test#1 (Memory)
9.33k
2.45k (x0.26)
TOTAL
178.64k
153.46k (x0.86)

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
i7-8700k
i5-10400T
Test#1 (Integers)
12.92k
12.61k (x0.98)
Test#2 (FP)
20.68k
17.94k (x0.87)
Test#3 (Generic, ZIP)
5.3k
4.83k (x0.91)
Test#1 (Memory)
12.59k
10.81k (x0.86)
TOTAL
51.48k
46.19k (x0.9)

Multithread

i7-8700k

i5-10400T
Test#1 (Integers)
94.26k
74.62k (x0.79)
Test#2 (FP)
152.55k
119.63k (x0.78)
Test#3 (Generic, ZIP)
39.74k
32.65k (x0.82)
Test#1 (Memory)
8.53k
2.52k (x0.3)
TOTAL
295.07k
229.42k (x0.78)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-8700k
i5-10400T
Test#1 (Integers)
16.87k
12.5k (x0.74)
Test#2 (FP)
26.12k
19.05k (x0.73)
Test#3 (Generic, ZIP)
6.33k
4.72k (x0.75)
Test#1 (Memory)
13.71k
10.3k (x0.75)
TOTAL
63.03k
46.57k (x0.74)

Multithread

i7-8700k

i5-10400T
Test#1 (Integers)
105.74k
74.58k (x0.71)
Test#2 (FP)
180.52k
126.96k (x0.7)
Test#3 (Generic, ZIP)
44.99k
31.76k (x0.71)
Test#1 (Memory)
8.51k
2.5k (x0.29)
TOTAL
339.77k
235.8k (x0.69)

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
i7-8700k
i5-10400T
Test#1 (Integers)
31.2k
22k (x0.7)
Test#2 (FP)
27.82k
19.98k (x0.72)
Test#3 (Generic, ZIP)
6.57k
4.57k (x0.7)
Test#1 (Memory)
15k
11.31k (x0.75)
TOTAL
80.6k
57.85k (x0.72)

Multithread

i7-8700k

i5-10400T
Test#1 (Integers)
202.42k
136.69k (x0.68)
Test#2 (FP)
186.33k
135.25k (x0.73)
Test#3 (Generic, ZIP)
44.96k
32.76k (x0.73)
Test#1 (Memory)
10.05k
2.48k (x0.25)
TOTAL
443.77k
307.18k (x0.69)

Performance/W
i7-8700k
i5-10400T
Test#1 (Integers)
2131 points/W
3905 points/W
Test#2 (FP)
1961 points/W
3864 points/W
Test#3 (Generic, ZIP)
473 points/W
936 points/W
Test#1 (Memory)
106 points/W
71 points/W
TOTAL
4671 points/W
8776 points/W

Performance/GHz
i7-8700k
i5-10400T
Test#1 (Integers)
6639 points/GHz
6111 points/GHz
Test#2 (FP)
5919 points/GHz
5549 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1268 points/GHz
Test#1 (Memory)
3192 points/GHz
3141 points/GHz
TOTAL
17148 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