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Core i9-9900K vs i5-11400T


Description
The i9-9900K is based on Coffee Lake architecture while the i5-11400T is based on Rocket Lake.

Using the multithread performance as a reference, the i9-9900K gets a score of 266.8 k points while the i5-11400T gets 67.1 k points.

Summarizing, the i9-9900K is 4 times faster than the i5-11400T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
a0671
Core
Coffee Lake-S
Rocket Lake-S
Architecture
Base frecuency
3.6 GHz
1.3 GHz
Boost frecuency
5 GHz
3.7 GHz
Socket
LGA 1151
LGA 1200
Cores/Threads
8/16
6/12
TDP
95 W
35 W
Cache L1 (d+i)
8x32+8x32 kB
6x32+6x48 kB
Cache L2
8x256 kB
6x512 kB
Cache L3
16384 kB
12288 kB
Date
October 2018
March 2021
Mean monothread perf.
81.91k points
31.39k points
Mean multithread perf.
529.32k points
67.1k 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
i9-9900K
i5-11400T
Test#1 (Integers)
5k
3.51k (x0.7)
Test#2 (FP)
20.22k
14.2k (x0.7)
Test#3 (Generic, ZIP)
6.54k
7.63k (x1.17)
Test#1 (Memory)
13.78k
6.06k (x0.44)
TOTAL
45.53k
31.39k (x0.69)

Multithread

i9-9900K

i5-11400T
Test#1 (Integers)
36.39k
7.4k (x0.2)
Test#2 (FP)
166.55k
31.37k (x0.19)
Test#3 (Generic, ZIP)
54.92k
18.11k (x0.33)
Test#1 (Memory)
8.96k
10.23k (x1.14)
TOTAL
266.82k
67.1k (x0.25)

Performance/W
i9-9900K
i5-11400T
Test#1 (Integers)
383 points/W
211 points/W
Test#2 (FP)
1753 points/W
896 points/W
Test#3 (Generic, ZIP)
578 points/W
518 points/W
Test#1 (Memory)
94 points/W
292 points/W
TOTAL
2809 points/W
1917 points/W

Performance/GHz
i9-9900K
i5-11400T
Test#1 (Integers)
999 points/GHz
948 points/GHz
Test#2 (FP)
4043 points/GHz
3838 points/GHz
Test#3 (Generic, ZIP)
1309 points/GHz
2062 points/GHz
Test#1 (Memory)
2755 points/GHz
1637 points/GHz
TOTAL
9106 points/GHz
8485 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