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Core i9-10900K vs i7-8700


Description
The i9-10900K is based on Comet Lake architecture while the i7-8700 is based on Coffee Lake.

Using the multithread performance as a reference, the i9-10900K gets a score of 685.6 k points while the i7-8700 gets 389 k points.

Summarizing, the i9-10900K is 1.8 times faster than the i7-8700. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0655
906ea
Core
Comet Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.7 GHz
3.2 GHz
Boost frecuency
5.2 GHz
4.6 GHz
Socket
LGA 1200
LGA 1151
Cores/Threads
10/20
6/12
TDP
125 W
65 W
Cache L1 (d+i)
10x32+10x32 kB
6x32+6x32 kB
Cache L2
10x256 kB
6x256 kB
Cache L3
20480 kB
12288 kB
Date
April 2020
October 2017
Mean monothread perf.
80.41k points
75.01k points
Mean multithread perf.
685.65k points
388.95k points

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i9-10900K
i7-8700
Test#1 (Integers)
19.5k
16.45k (x0.84)
Test#2 (FP)
28.01k
23.74k (x0.85)
Test#3 (Generic, ZIP)
7.45k
6.24k (x0.84)
Test#1 (Memory)
15.82k
13.43k (x0.85)
TOTAL
70.79k
59.86k (x0.85)

Multithread

i9-10900K

i7-8700
Test#1 (Integers)
194.49k
100.94k (x0.52)
Test#2 (FP)
312.59k
159.09k (x0.51)
Test#3 (Generic, ZIP)
89.14k
43.61k (x0.49)
Test#1 (Memory)
12.58k
6.59k (x0.52)
TOTAL
608.81k
310.23k (x0.51)

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
i9-10900K
i7-8700
Test#1 (Integers)
32.67k
29.25k (x0.9)
Test#2 (FP)
28.49k
25.98k (x0.91)
Test#3 (Generic, ZIP)
6.53k
6.05k (x0.93)
Test#1 (Memory)
12.72k
13.74k (x1.08)
TOTAL
80.41k
75.01k (x0.93)

Multithread

i9-10900K

i7-8700
Test#1 (Integers)
307.39k
182.56k (x0.59)
Test#2 (FP)
298.47k
159.9k (x0.54)
Test#3 (Generic, ZIP)
72.94k
38.18k (x0.52)
Test#1 (Memory)
6.85k
8.31k (x1.21)
TOTAL
685.65k
388.95k (x0.57)

Performance/W
i9-10900K
i7-8700
Test#1 (Integers)
2459 points/W
2809 points/W
Test#2 (FP)
2388 points/W
2460 points/W
Test#3 (Generic, ZIP)
583 points/W
587 points/W
Test#1 (Memory)
55 points/W
128 points/W
TOTAL
5485 points/W
5984 points/W

Performance/GHz
i9-10900K
i7-8700
Test#1 (Integers)
6282 points/GHz
6358 points/GHz
Test#2 (FP)
5479 points/GHz
5647 points/GHz
Test#3 (Generic, ZIP)
1257 points/GHz
1316 points/GHz
Test#1 (Memory)
2445 points/GHz
2986 points/GHz
TOTAL
15463 points/GHz
16307 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