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Core i7-4790 vs i9-7980XE


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

Using the multithread performance as a reference, the i7-4790 gets a score of 173.9 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 7 times faster than the i7-4790 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306c3
50654
Core
Haswell
Skylake-X
Architecture
Base frecuency
3.6 GHz
2.6 GHz
Boost frecuency
4 GHz
4.4 GHz
Socket
LGA 1150
LGA 2066
Cores/Threads
4/8
18/36
TDP
84 W
165 W
Cache L1 (d+i)
32+32 kB
18x32+18x32 kB
Cache L2
256 kB
18x1024 kB
Cache L3
8192 kB
25344 kB
Date
May 2014
May 2017
Mean monothread perf.
44.73k points
76.43k points
Mean multithread perf.
173.89k 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
i7-4790
i9-7980XE
Test#1 (Integers)
4.51k
4.89k (x1.08)
Test#2 (FP)
11.24k
19.98k (x1.78)
Test#3 (Generic, ZIP)
5.03k
6.14k (x1.22)
Test#1 (Memory)
5.02k
9.81k (x1.95)
TOTAL
25.8k
40.82k (x1.58)

Multithread

i7-4790

i9-7980XE
Test#1 (Integers)
15.72k
79.8k (x5.08)
Test#2 (FP)
54.99k
372.72k (x6.78)
Test#3 (Generic, ZIP)
23.87k
121.42k (x5.09)
Test#1 (Memory)
5.48k
26.48k (x4.83)
TOTAL
100.06k
600.43k (x6)

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
i7-4790
i9-7980XE
Test#1 (Integers)
22.19k
31.16k (x1.4)
Test#2 (FP)
12.45k
28.13k (x2.26)
Test#3 (Generic, ZIP)
5.11k
6.65k (x1.3)
Test#1 (Memory)
4.98k
10.5k (x2.11)
TOTAL
44.73k
76.43k (x1.71)

Multithread

i7-4790

i9-7980XE
Test#1 (Integers)
87.14k
560.19k (x6.43)
Test#2 (FP)
58k
516.97k (x8.91)
Test#3 (Generic, ZIP)
22.75k
123.94k (x5.45)
Test#1 (Memory)
6k
22.69k (x3.78)
TOTAL
173.89k
1223.79k (x7.04)

Performance/W
i7-4790
i9-7980XE
Test#1 (Integers)
1037 points/W
3395 points/W
Test#2 (FP)
691 points/W
3133 points/W
Test#3 (Generic, ZIP)
271 points/W
751 points/W
Test#1 (Memory)
71 points/W
137 points/W
TOTAL
2070 points/W
7417 points/W

Performance/GHz
i7-4790
i9-7980XE
Test#1 (Integers)
5547 points/GHz
7081 points/GHz
Test#2 (FP)
3113 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
1512 points/GHz
Test#1 (Memory)
1244 points/GHz
2386 points/GHz
TOTAL
11183 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.


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