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Core i9-9900K vs i7-12700K


Description
The i9-9900K is based on Coffee Lake architecture while the i7-12700K is based on Alder Lake.

Using the multithread performance as a reference, the i9-9900K gets a score of 529.3 k points while the i7-12700K gets 1034.1 k points.

Summarizing, the i7-12700K is 2 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
90672
Core
Coffee Lake-S
Alder Lake
Architecture
Base frecuency
3.6 GHz
2.7 GHz
Boost frecuency
5 GHz
5 GHz
Socket
LGA 1151
LGA 1700
Cores/Threads
8/16
12/20
TDP
95 W
190 W
Cache L1 (d+i)
8x32+8x32 kB
8x32/4x64+8x48/4x32 kB
Cache L2
8x256 kB
8x1280+4x2048 kB
Cache L3
16384 kB
25600 kB
Date
October 2018
November 2021
Mean monothread perf.
81.91k points
110.2k points
Mean multithread perf.
529.32k points
1034.06k 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
i7-12700K
Test#1 (Integers)
5k
8.44k (x1.69)
Test#2 (FP)
20.22k
21.1k (x1.04)
Test#3 (Generic, ZIP)
6.54k
14.52k (x2.22)
Test#1 (Memory)
13.78k
12.87k (x0.93)
TOTAL
45.53k
56.92k (x1.25)

Multithread

i9-9900K

i7-12700K
Test#1 (Integers)
36.39k
70.7k (x1.94)
Test#2 (FP)
166.55k
251.29k (x1.51)
Test#3 (Generic, ZIP)
54.92k
159.92k (x2.91)
Test#1 (Memory)
8.96k
32.47k (x3.62)
TOTAL
266.82k
514.38k (x1.93)

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
i7-12700K
Test#1 (Integers)
32.08k
52.13k (x1.62)
Test#2 (FP)
28.17k
28.97k (x1.03)
Test#3 (Generic, ZIP)
6.68k
15.04k (x2.25)
Test#1 (Memory)
14.98k
14.07k (x0.94)
TOTAL
81.91k
110.2k (x1.35)

Multithread

i9-9900K

i7-12700K
Test#1 (Integers)
242.98k
458.8k (x1.89)
Test#2 (FP)
220.16k
377.45k (x1.71)
Test#3 (Generic, ZIP)
53.97k
171.31k (x3.17)
Test#1 (Memory)
12.22k
26.51k (x2.17)
TOTAL
529.32k
1034.06k (x1.95)

Performance/W
i9-9900K
i7-12700K
Test#1 (Integers)
2558 points/W
2415 points/W
Test#2 (FP)
2317 points/W
1987 points/W
Test#3 (Generic, ZIP)
568 points/W
902 points/W
Test#1 (Memory)
129 points/W
140 points/W
TOTAL
5572 points/W
5442 points/W

Performance/GHz
i9-9900K
i7-12700K
Test#1 (Integers)
6417 points/GHz
10425 points/GHz
Test#2 (FP)
5634 points/GHz
5794 points/GHz
Test#3 (Generic, ZIP)
1335 points/GHz
3008 points/GHz
Test#1 (Memory)
2996 points/GHz
2813 points/GHz
TOTAL
16382 points/GHz
22040 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