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Core i5-10400T vs i7-5820K


Description
The i5-10400T is based on Comet Lake architecture while the i7-5820K is based on Haswell.

Using the multithread performance as a reference, the i5-10400T gets a score of 235.8 k points while the i7-5820K gets 129.1 k points.

Summarizing, the i5-10400T is 1.8 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
306f2
Core
Comet Lake-S
Haswell-E
Architecture
Base frecuency
2 GHz
3.3 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
FC-LGA 1200
LGA 1150
Cores/Threads
6/12
6/12
TDP
35 W
140 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
15360 kB
Date
April 2020
September 2014
Mean monothread perf.
57.85k points
31.53k points
Mean multithread perf.
307.18k points
129.06k 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
i7-5820K
Test#1 (Integers)
4k
3.82k (x0.95)
Test#2 (FP)
14.19k
9.64k (x0.68)
Test#3 (Generic, ZIP)
4.62k
4.29k (x0.93)
Test#1 (Memory)
11.03k
3.78k (x0.34)
TOTAL
33.84k
21.53k (x0.64)

Multithread

i5-10400T

i7-5820K
Test#1 (Integers)
22.77k
18.07k (x0.79)
Test#2 (FP)
96.59k
64.25k (x0.67)
Test#3 (Generic, ZIP)
31.65k
27.03k (x0.85)
Test#1 (Memory)
2.45k
8.03k (x3.28)
TOTAL
153.46k
117.38k (x0.76)

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
i7-5820K
Test#1 (Integers)
12.5k
12.03k (x0.96)
Test#2 (FP)
19.05k
11.23k (x0.59)
Test#3 (Generic, ZIP)
4.72k
4.55k (x0.96)
Test#1 (Memory)
10.3k
3.72k (x0.36)
TOTAL
46.57k
31.53k (x0.68)

Multithread

i5-10400T

i7-5820K
Test#1 (Integers)
74.58k
49.48k (x0.66)
Test#2 (FP)
126.96k
52.21k (x0.41)
Test#3 (Generic, ZIP)
31.76k
19.7k (x0.62)
Test#1 (Memory)
2.5k
7.67k (x3.07)
TOTAL
235.8k
129.06k (x0.55)

Performance/W
i5-10400T
i7-5820K
Test#1 (Integers)
2131 points/W
353 points/W
Test#2 (FP)
3627 points/W
373 points/W
Test#3 (Generic, ZIP)
907 points/W
141 points/W
Test#1 (Memory)
71 points/W
55 points/W
TOTAL
6737 points/W
922 points/W

Performance/GHz
i5-10400T
i7-5820K
Test#1 (Integers)
3472 points/GHz
3343 points/GHz
Test#2 (FP)
5292 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1312 points/GHz
1264 points/GHz
Test#1 (Memory)
2860 points/GHz
1033 points/GHz
TOTAL
12936 points/GHz
8759 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