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Core i9-7980XE vs i7-4790K


Description
The i9-7980XE is based on Skylake architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the i9-7980XE gets a score of 1223.8 k points while the i7-4790K gets 215.5 k points.

Summarizing, the i9-7980XE is 5.7 times faster than the i7-4790K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
50654
306c3
Core
Skylake-X
Haswell
Architecture
Base frecuency
2.6 GHz
4 GHz
Boost frecuency
4.4 GHz
4.4 GHz
Socket
LGA 2066
LGA 1150
Cores/Threads
18/36
4/8
TDP
165 W
88 W
Cache L1 (d+i)
18x32+18x32 kB
32+32 kB
Cache L2
18x1024 kB
256 kB
Cache L3
25344 kB
8192 kB
Date
May 2017
May 2014
Mean monothread perf.
76.43k points
52.47k points
Mean multithread perf.
1223.79k points
215.47k 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
i9-7980XE
i7-4790K
Test#1 (Integers)
4.89k
5.06k (x1.04)
Test#2 (FP)
19.98k
12.63k (x0.63)
Test#3 (Generic, ZIP)
6.14k
5.81k (x0.95)
Test#1 (Memory)
9.81k
4.96k (x0.51)
TOTAL
40.82k
28.47k (x0.7)

Multithread

i9-7980XE

i7-4790K
Test#1 (Integers)
79.8k
18.28k (x0.23)
Test#2 (FP)
372.72k
64.07k (x0.17)
Test#3 (Generic, ZIP)
121.42k
27.52k (x0.23)
Test#1 (Memory)
26.48k
7.97k (x0.3)
TOTAL
600.43k
117.84k (x0.2)

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
i9-7980XE
i7-4790K
Test#1 (Integers)
31.16k
26.16k (x0.84)
Test#2 (FP)
28.13k
14.78k (x0.53)
Test#3 (Generic, ZIP)
6.65k
6.01k (x0.9)
Test#1 (Memory)
10.5k
5.52k (x0.53)
TOTAL
76.43k
52.47k (x0.69)

Multithread

i9-7980XE

i7-4790K
Test#1 (Integers)
560.19k
107.76k (x0.19)
Test#2 (FP)
516.97k
70.84k (x0.14)
Test#3 (Generic, ZIP)
123.94k
27.99k (x0.23)
Test#1 (Memory)
22.69k
8.87k (x0.39)
TOTAL
1223.79k
215.47k (x0.18)

Performance/W
i9-7980XE
i7-4790K
Test#1 (Integers)
3395 points/W
1225 points/W
Test#2 (FP)
3133 points/W
805 points/W
Test#3 (Generic, ZIP)
751 points/W
318 points/W
Test#1 (Memory)
137 points/W
101 points/W
TOTAL
7417 points/W
2448 points/W

Performance/GHz
i9-7980XE
i7-4790K
Test#1 (Integers)
7081 points/GHz
5946 points/GHz
Test#2 (FP)
6392 points/GHz
3359 points/GHz
Test#3 (Generic, ZIP)
1512 points/GHz
1366 points/GHz
Test#1 (Memory)
2386 points/GHz
1254 points/GHz
TOTAL
17371 points/GHz
11925 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