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Core i9-11900K vs i7-11700K


Description
Both models i9-11900K and i7-11700K are based on Rocket Lake architecture.

It’s the 11th generation of Core CPUs and it’s manufactures in the 14nm. It has support for PCIe 4.0

Using the multithread performance as a reference, the i9-11900K gets a score of 748 k points while the i7-11700K gets 742.2 k points.

Summarizing, the i9-11900K is 1 times faster than the i7-11700K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
a0671
Core
Rocket Lake-S
Rocket Lake-S
Architecture
Base frecuency
3.5 GHz
3.6 GHz
Boost frecuency
5.3 GHz
5 GHz
Socket
LGA 1200
LGA 1200
Cores/Threads
8/16
8/16
TDP
125 W
125 W
Cache L1 (d+i)
8x32+8x48 kB
8x32+8x48 kB
Cache L2
8x512 kB
8x512 kB
Cache L3
16386 kB
16384 kB
Date
March 2021
March 2021
Mean monothread perf.
101.11k points
99.57k points
Mean multithread perf.
748.02k points
742.15k points

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
i9-11900K
i7-11700K
Test#1 (Integers)
36.08k
36.24k (x1)
Test#2 (FP)
30.19k
28.87k (x0.96)
Test#3 (Generic, ZIP)
12.96k
12.76k (x0.98)
Test#1 (Memory)
21.88k
21.7k (x0.99)
TOTAL
101.11k
99.57k (x0.98)

Multithread

i9-11900K

i7-11700K
Test#1 (Integers)
311.76k
315.15k (x1.01)
Test#2 (FP)
314.01k
303.07k (x0.97)
Test#3 (Generic, ZIP)
112.23k
111.09k (x0.99)
Test#1 (Memory)
10.02k
12.85k (x1.28)
TOTAL
748.02k
742.15k (x0.99)

Performance/W
i9-11900K
i7-11700K
Test#1 (Integers)
2494 points/W
2521 points/W
Test#2 (FP)
2512 points/W
2425 points/W
Test#3 (Generic, ZIP)
898 points/W
889 points/W
Test#1 (Memory)
80 points/W
103 points/W
TOTAL
5984 points/W
5937 points/W

Performance/GHz
i9-11900K
i7-11700K
Test#1 (Integers)
6807 points/GHz
7247 points/GHz
Test#2 (FP)
5695 points/GHz
5775 points/GHz
Test#3 (Generic, ZIP)
2446 points/GHz
2551 points/GHz
Test#1 (Memory)
4129 points/GHz
4341 points/GHz
TOTAL
19077 points/GHz
19914 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