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Core i5-10400T vs i7-7700K


Description
The i5-10400T is based on Comet Lake architecture while the i7-7700K is based on Kaby Lake.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i7-7700K gets 289.9 k points.

Summarizing, the i5-10400T is 1.1 times faster than the i7-7700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
906e9
Core
Comet Lake-S
Kaby Lake-S
Architecture
Base frecuency
2 GHz
4.2 GHz
Boost frecuency
3.6 GHz
4.5 GHz
Socket
FC-LGA 1200
LGA 1151
Cores/Threads
6/12
4/8
TDP
35 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
8192 kB
Date
April 2020
September 2016
Mean monothread perf.
57.85k points
76.98k points
Mean multithread perf.
307.18k points
289.9k 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
i5-10400T
i7-7700K
Test#1 (Integers)
4k
4.63k (x1.16)
Test#2 (FP)
14.19k
18.92k (x1.33)
Test#3 (Generic, ZIP)
4.62k
6.22k (x1.35)
Test#1 (Memory)
11.03k
13.92k (x1.26)
TOTAL
33.84k
43.7k (x1.29)

Multithread

i5-10400T

i7-7700K
Test#1 (Integers)
22.77k
18.53k (x0.81)
Test#2 (FP)
96.59k
86.49k (x0.9)
Test#3 (Generic, ZIP)
31.65k
28.78k (x0.91)
Test#1 (Memory)
2.45k
9.67k (x3.95)
TOTAL
153.46k
143.47k (x0.93)

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
i5-10400T
i7-7700K
Test#1 (Integers)
12.5k
17.55k (x1.4)
Test#2 (FP)
19.05k
27.82k (x1.46)
Test#3 (Generic, ZIP)
4.72k
6.8k (x1.44)
Test#1 (Memory)
10.3k
14.83k (x1.44)
TOTAL
46.57k
67k (x1.44)

Multithread

i5-10400T

i7-7700K
Test#1 (Integers)
74.58k
68.4k (x0.92)
Test#2 (FP)
126.96k
118.8k (x0.94)
Test#3 (Generic, ZIP)
31.76k
33.34k (x1.05)
Test#1 (Memory)
2.5k
17.43k (x6.98)
TOTAL
235.8k
237.97k (x1.01)

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
i5-10400T
i7-7700K
Test#1 (Integers)
22k
30.47k (x1.38)
Test#2 (FP)
19.98k
26.94k (x1.35)
Test#3 (Generic, ZIP)
4.57k
6.25k (x1.37)
Test#1 (Memory)
11.31k
13.32k (x1.18)
TOTAL
57.85k
76.98k (x1.33)

Multithread

i5-10400T

i7-7700K
Test#1 (Integers)
136.69k
127.81k (x0.94)
Test#2 (FP)
135.25k
123.7k (x0.91)
Test#3 (Generic, ZIP)
32.76k
29.34k (x0.9)
Test#1 (Memory)
2.48k
9.05k (x3.65)
TOTAL
307.18k
289.9k (x0.94)

Performance/W
i5-10400T
i7-7700K
Test#1 (Integers)
3905 points/W
1345 points/W
Test#2 (FP)
3864 points/W
1302 points/W
Test#3 (Generic, ZIP)
936 points/W
309 points/W
Test#1 (Memory)
71 points/W
95 points/W
TOTAL
8776 points/W
3052 points/W

Performance/GHz
i5-10400T
i7-7700K
Test#1 (Integers)
6111 points/GHz
6770 points/GHz
Test#2 (FP)
5549 points/GHz
5987 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1389 points/GHz
Test#1 (Memory)
3141 points/GHz
2960 points/GHz
TOTAL
16069 points/GHz
17106 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