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Core i5-10400T vs i7-4790K


Description
The i5-10400T is based on Comet Lake architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i7-4790K gets 219.5 k points.

Summarizing, the i5-10400T is 1.4 times faster than the i7-4790K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
306c3
Core
Comet Lake-S
Haswell
Architecture
Base frecuency
2 GHz
4 GHz
Boost frecuency
3.6 GHz
4.4 GHz
Socket
FC-LGA 1200
LGA 1150
Cores/Threads
6/12
4/8
TDP
35 W
88 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
May 2014

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
i7-4790K
Test#1 (Integers)
4004
5065 (26.48%)
Test#2 (FP)
14189
12626 (-11.02%)
Test#3 (Generic, ZIP)
4620
5815 (25.87%)
Test#1 (Memory)
11029
4963 (-55.00%)
TOTAL
33842
28468 (-15.88%)

Multithread

i5-10400T

i7-4790K
Test#1 (Integers)
22767
18283 (-19.70%)
Test#2 (FP)
96586
64071 (-33.66%)
Test#3 (Generic, ZIP)
31652
27522 (-13.05%)
Test#1 (Memory)
2451
7970 (225.15%)
TOTAL
153456
117844 (-23.21%)

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
i5-10400T
i7-4790K
Test#1 (Integers)
12610
15603 (23.73%)
Test#2 (FP)
17941
13919 (-22.42%)
Test#3 (Generic, ZIP)
4828
6125 (26.85%)
Test#1 (Memory)
10811
5001 (-53.74%)
TOTAL
46191
40647 (-12.00%)

Multithread

i5-10400T

i7-4790K
Test#1 (Integers)
74617
65477 (-12.25%)
Test#2 (FP)
119634
63290 (-47.10%)
Test#3 (Generic, ZIP)
32645
27929 (-14.45%)
Test#1 (Memory)
2520
7841 (211.18%)
TOTAL
229416
164537 (-28.28%)

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
i7-4790K
Test#1 (Integers)
12498
15800 (26.43%)
Test#2 (FP)
19053
14346 (-24.70%)
Test#3 (Generic, ZIP)
4722
5974 (26.51%)
Test#1 (Memory)
10297
5166 (-49.84%)
TOTAL
46570
41285 (-11.35%)

Multithread

i5-10400T

i7-4790K
Test#1 (Integers)
74581
62785 (-15.82%)
Test#2 (FP)
126959
66483 (-47.63%)
Test#3 (Generic, ZIP)
31762
26352 (-17.03%)
Test#1 (Memory)
2497
8739 (249.95%)
TOTAL
235799
164359 (-30.30%)

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
i7-4790K
Test#1 (Integers)
21999
26714 (21.44%)
Test#2 (FP)
19977
15101 (-24.41%)
Test#3 (Generic, ZIP)
4566
6186 (35.48%)
Test#1 (Memory)
11306
5554 (-50.87%)
TOTAL
57847
53555 (-7.42%)

Multithread

i5-10400T

i7-4790K
Test#1 (Integers)
136687
109572 (-19.84%)
Test#2 (FP)
135254
71887 (-46.85%)
Test#3 (Generic, ZIP)
32756
28440 (-13.18%)
Test#1 (Memory)
2478
9603 (287.52%)
TOTAL
307175
219503 (-28.54%)

Performance/W
i5-10400T
i7-4790K
Test#1 (Integers)
3905 points/W
1245 points/W
Test#2 (FP)
3864 points/W
817 points/W
Test#3 (Generic, ZIP)
936 points/W
323 points/W
Test#1 (Memory)
71 points/W
109 points/W
TOTAL
8776 points/W
2494 points/W

Performance/GHz
i5-10400T
i7-4790K
Test#1 (Integers)
6111 points/GHz
6071 points/GHz
Test#2 (FP)
5549 points/GHz
3432 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1406 points/GHz
Test#1 (Memory)
3141 points/GHz
1262 points/GHz
TOTAL
16069 points/GHz
12172 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. 3.7.9