Core i9-9900K vs i9-7980XE
Description
The i9-9900K is based on Coffee Lake architecture while the i9-7980XE is based on Skylake.
Using the multithread performance as a reference, the i9-9900K gets a score of 545.3 k points while the i9-7980XE gets 1223.8 k points.
Summarizing, the i9-7980XE is 2.2 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i9-9900K gets a score of 545.3 k points while the i9-7980XE gets 1223.8 k points.
Summarizing, the i9-7980XE is 2.2 times faster than the i9-9900K. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ec
50654
Core
Coffee Lake-S
Skylake-X
Base frecuency
3.6 GHz
2.6 GHz
Boost frecuency
5 GHz
4.4 GHz
Socket
LGA 1151
LGA 2066
Cores/Threads
8/16
18/36
TDP
95 W
165 W
Cache L1 (d+i)
8x32+8x32 kB
18x32+18x32 kB
Cache L2
8x256 kB
18x1024 kB
Cache L3
16384 kB
25344 kB
Date
October 2018
May 2017
Mean monothread perf.
86.24k points
76.43k points
Mean multithread perf.
545.3k points
1223.79k 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
i9-7980XE
Test#1 (Integers)
5.17k
4.89k (x0.95)
Test#2 (FP)
21.15k
19.98k (x0.94)
Test#3 (Generic, ZIP)
7.01k
6.14k (x0.88)
Test#1 (Memory)
15.32k
9.81k (x0.64)
TOTAL
48.66k
40.82k (x0.84)
Multithread
i9-9900K
i9-7980XE
Test#1 (Integers)
38.45k
79.8k (x2.08)
Test#2 (FP)
155.68k
372.72k (x2.39)
Test#3 (Generic, ZIP)
51k
121.42k (x2.38)
Test#1 (Memory)
18.26k
26.48k (x1.45)
TOTAL
263.38k
600.43k (x2.28)
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
i9-7980XE
Test#1 (Integers)
33.62k
31.16k (x0.93)
Test#2 (FP)
30.02k
28.13k (x0.94)
Test#3 (Generic, ZIP)
7.17k
6.65k (x0.93)
Test#1 (Memory)
15.43k
10.5k (x0.68)
TOTAL
86.24k
76.43k (x0.89)
Multithread
i9-9900K
i9-7980XE
Test#1 (Integers)
248.93k
560.19k (x2.25)
Test#2 (FP)
224.43k
516.97k (x2.3)
Test#3 (Generic, ZIP)
53.39k
123.94k (x2.32)
Test#1 (Memory)
18.54k
22.69k (x1.22)
TOTAL
545.3k
1223.79k (x2.24)
Performance/W
i9-9900K
i9-7980XE
Test#1 (Integers)
2620 points/W
3395 points/W
Test#2 (FP)
2362 points/W
3133 points/W
Test#3 (Generic, ZIP)
562 points/W
751 points/W
Test#1 (Memory)
195 points/W
137 points/W
TOTAL
5740 points/W
7417 points/W
Performance/GHz
i9-9900K
i9-7980XE
Test#1 (Integers)
6724 points/GHz
7081 points/GHz
Test#2 (FP)
6003 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1434 points/GHz
1512 points/GHz
Test#1 (Memory)
3087 points/GHz
2386 points/GHz
TOTAL
17247 points/GHz
17371 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4