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Core i5-11400 vs i7-6900K


Description
The i5-11400 is based on Rocket Lake architecture while the i7-6900K is based on Broadwell.

Using the multithread performance as a reference, the i5-11400 gets a score of 489.3 k points while the i7-6900K gets 427.5 k points.

Summarizing, the i5-11400 is 1.1 times faster than the i7-6900K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0671
406f1
Core
Rocket Lake-S
Broadwell-E
Architecture
Base frecuency
2.6 GHz
3.2 GHz
Boost frecuency
4.4 GHz
3.7 GHz
Socket
LGA 1200
LGA 2011-3
Cores/Threads
6/12
8/16
TDP
65 W
140 W
Cache L1 (d+i)
6x32+6x48 kB
8x32+8x32 kB
Cache L2
6x512 kB
8x256 kB
Cache L3
12288 kB
20480 kB
Date
March 2021
September 2016
Mean monothread perf.
86.11k points
49.76k points
Mean multithread perf.
489.31k points
427.51k 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
i5-11400
i7-6900K
Test#1 (Integers)
31.23k
23.11k (x0.74)
Test#2 (FP)
25.88k
17.84k (x0.69)
Test#3 (Generic, ZIP)
10.83k
5.34k (x0.49)
Test#1 (Memory)
18.17k
3.47k (x0.19)
TOTAL
86.11k
49.76k (x0.58)

Multithread

i5-11400

i7-6900K
Test#1 (Integers)
213.85k
184.19k (x0.86)
Test#2 (FP)
195.51k
181.2k (x0.93)
Test#3 (Generic, ZIP)
72.06k
47.44k (x0.66)
Test#1 (Memory)
7.89k
14.69k (x1.86)
TOTAL
489.31k
427.51k (x0.87)

Performance/W
i5-11400
i7-6900K
Test#1 (Integers)
3290 points/W
1316 points/W
Test#2 (FP)
3008 points/W
1294 points/W
Test#3 (Generic, ZIP)
1109 points/W
339 points/W
Test#1 (Memory)
121 points/W
105 points/W
TOTAL
7528 points/W
3054 points/W

Performance/GHz
i5-11400
i7-6900K
Test#1 (Integers)
7098 points/GHz
6247 points/GHz
Test#2 (FP)
5881 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
2461 points/GHz
1444 points/GHz
Test#1 (Memory)
4130 points/GHz
938 points/GHz
TOTAL
19570 points/GHz
13450 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