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Core i9-9900K vs Ryzen 9 7950X


Description
The i9-9900K is based on Coffee Lake architecture while the 7950X is based on Zen 4.

Using the multithread performance as a reference, the i9-9900K gets a score of 529.3 k points while the 7950X gets 1597.8 k points.

Summarizing, the 7950X is 3 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
a60f12
Core
Coffee Lake-S
Raphael
Architecture
Coffee Lake
Base frecuency
3.6 GHz
4.5 GHz
Boost frecuency
5 GHz
5.7 GHz
Socket
LGA 1151
AM5
Cores/Threads
8/16
16/32
TDP
95 W
170 W
Cache L1 (d+i)
8x32+8x32 kB
16x32+16x32 kB
Cache L2
8x256 kB
16x1024 kB
Cache L3
16384 kB
131072 kB
Date
October 2018
September 2022
Mean monothread perf.
81.91k points
121.33k points
Mean multithread perf.
529.32k points
1597.79k 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
7950X
Test#1 (Integers)
5k
6.05k (x1.21)
Test#2 (FP)
20.22k
23.41k (x1.16)
Test#3 (Generic, ZIP)
6.54k
16.49k (x2.52)
Test#1 (Memory)
13.78k
34.35k (x2.49)
TOTAL
45.53k
80.3k (x1.76)

Multithread

i9-9900K

7950X
Test#1 (Integers)
36.39k
128.82k (x3.54)
Test#2 (FP)
166.55k
465.79k (x2.8)
Test#3 (Generic, ZIP)
54.92k
289.43k (x5.27)
Test#1 (Memory)
8.96k
75.23k (x8.39)
TOTAL
266.82k
959.27k (x3.6)

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
i9-9900K
7950X
Test#1 (Integers)
17.98k
26.86k (x1.49)
Test#2 (FP)
27.04k
30.05k (x1.11)
Test#3 (Generic, ZIP)
6.63k
16.15k (x2.44)
Test#1 (Memory)
13.6k
31.74k (x2.33)
TOTAL
65.24k
104.8k (x1.61)

Multithread

i9-9900K

7950X
Test#1 (Integers)
130.88k
430.6k (x3.29)
Test#2 (FP)
208.5k
545.91k (x2.62)
Test#3 (Generic, ZIP)
54.12k
289.57k (x5.35)
Test#1 (Memory)
8.91k
64.33k (x7.22)
TOTAL
402.41k
1330.41k (x3.31)

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
i9-9900K
7950X
Test#1 (Integers)
32.08k
40.61k (x1.27)
Test#2 (FP)
28.17k
31.82k (x1.13)
Test#3 (Generic, ZIP)
6.68k
16.63k (x2.49)
Test#1 (Memory)
14.98k
32.28k (x2.16)
TOTAL
81.91k
121.33k (x1.48)

Multithread

i9-9900K

7950X
Test#1 (Integers)
242.98k
683.17k (x2.81)
Test#2 (FP)
220.16k
563.45k (x2.56)
Test#3 (Generic, ZIP)
53.97k
286.77k (x5.31)
Test#1 (Memory)
12.22k
64.4k (x5.27)
TOTAL
529.32k
1597.79k (x3.02)

Performance/W
i9-9900K
7950X
Test#1 (Integers)
2558 points/W
4019 points/W
Test#2 (FP)
2317 points/W
3314 points/W
Test#3 (Generic, ZIP)
568 points/W
1687 points/W
Test#1 (Memory)
129 points/W
379 points/W
TOTAL
5572 points/W
9399 points/W

Performance/GHz
i9-9900K
7950X
Test#1 (Integers)
6417 points/GHz
7124 points/GHz
Test#2 (FP)
5634 points/GHz
5582 points/GHz
Test#3 (Generic, ZIP)
1335 points/GHz
2917 points/GHz
Test#1 (Memory)
2996 points/GHz
5663 points/GHz
TOTAL
16382 points/GHz
21286 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