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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 307.2 k points while the i7-5820K gets 251 k points.

Summarizing, the i5-10400T is 1.2 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
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
15360 kB
Date
April 2020
September 2014
Mean monothread perf.
57.85k points
39.16k points
Mean multithread perf.
307.18k points
250.98k 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)

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
i7-5820K
Test#1 (Integers)
22k
19.86k (x0.9)
Test#2 (FP)
19.98k
11.2k (x0.56)
Test#3 (Generic, ZIP)
4.57k
4.43k (x0.97)
Test#1 (Memory)
11.31k
3.67k (x0.32)
TOTAL
57.85k
39.16k (x0.68)

Multithread

i5-10400T

i7-5820K
Test#1 (Integers)
136.69k
126.19k (x0.92)
Test#2 (FP)
135.25k
83.02k (x0.61)
Test#3 (Generic, ZIP)
32.76k
32.36k (x0.99)
Test#1 (Memory)
2.48k
9.41k (x3.8)
TOTAL
307.18k
250.98k (x0.82)

Performance/W
i5-10400T
i7-5820K
Test#1 (Integers)
3905 points/W
901 points/W
Test#2 (FP)
3864 points/W
593 points/W
Test#3 (Generic, ZIP)
936 points/W
231 points/W
Test#1 (Memory)
71 points/W
67 points/W
TOTAL
8776 points/W
1793 points/W

Performance/GHz
i5-10400T
i7-5820K
Test#1 (Integers)
6111 points/GHz
5516 points/GHz
Test#2 (FP)
5549 points/GHz
3112 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1232 points/GHz
Test#1 (Memory)
3141 points/GHz
1019 points/GHz
TOTAL
16069 points/GHz
10878 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