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Core i7-4790K vs i7-7700K


Description
The i7-4790K is based on Haswell architecture while the i7-7700K is based on Kaby Lake.

Using the multithread performance as a reference, the i7-4790K gets a score of 219.5 k points while the i7-7700K gets 282.6 k points.

Summarizing, the i7-7700K is 1.3 times faster than the i7-4790K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306c3
906e9
Core
Haswell
Kaby Lake-S
Architecture
Base frecuency
4 GHz
4.2 GHz
Boost frecuency
4.4 GHz
4.5 GHz
Socket
LGA 1150
LGA 1151
Cores/Threads
4/8
4/8
TDP
88 W
95 W
Cache L1 (d+i)
32+32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
8192 kB
Date
May 2014
September 2016

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
i7-4790K
i7-7700K
Test#1 (Integers)
5065
4629 (-8.59%)
Test#2 (FP)
12626
18925 (49.89%)
Test#3 (Generic, ZIP)
5815
6221 (6.99%)
Test#1 (Memory)
4963
13922 (180.53%)
TOTAL
28468
43698 (53.50%)

Multithread

i7-4790K

i7-7700K
Test#1 (Integers)
18283
18529 (1.35%)
Test#2 (FP)
64071
86487 (34.99%)
Test#3 (Generic, ZIP)
27522
28778 (4.57%)
Test#1 (Memory)
7970
9674 (21.39%)
TOTAL
117844
143468 (21.74%)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-4790K
i7-7700K
Test#1 (Integers)
15800
17549 (11.07%)
Test#2 (FP)
14346
27822 (93.94%)
Test#3 (Generic, ZIP)
5974
6796 (13.77%)
Test#1 (Memory)
5166
14832 (187.13%)
TOTAL
41285
66999 (62.28%)

Multithread

i7-4790K

i7-7700K
Test#1 (Integers)
62785
68395 (8.94%)
Test#2 (FP)
66483
118805 (78.70%)
Test#3 (Generic, ZIP)
26352
33336 (26.50%)
Test#1 (Memory)
8739
17434 (99.50%)
TOTAL
164359
237970 (44.79%)

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
i7-4790K
i7-7700K
Test#1 (Integers)
26714
31249 (16.98%)
Test#2 (FP)
15101
27727 (83.62%)
Test#3 (Generic, ZIP)
6186
6568 (6.18%)
Test#1 (Memory)
5554
14027 (152.56%)
TOTAL
53555
79572 (48.58%)

Multithread

i7-4790K

i7-7700K
Test#1 (Integers)
109572
122782 (12.06%)
Test#2 (FP)
71887
120734 (67.95%)
Test#3 (Generic, ZIP)
28440
29032 (2.08%)
Test#1 (Memory)
9603
10023 (4.37%)
TOTAL
219503
282571 (28.73%)

Performance/W
i7-4790K
i7-7700K
Test#1 (Integers)
1245 points/W
1292 points/W
Test#2 (FP)
817 points/W
1271 points/W
Test#3 (Generic, ZIP)
323 points/W
306 points/W
Test#1 (Memory)
109 points/W
106 points/W
TOTAL
2494 points/W
2974 points/W

Performance/GHz
i7-4790K
i7-7700K
Test#1 (Integers)
6071 points/GHz
6944 points/GHz
Test#2 (FP)
3432 points/GHz
6162 points/GHz
Test#3 (Generic, ZIP)
1406 points/GHz
1460 points/GHz
Test#1 (Memory)
1262 points/GHz
3117 points/GHz
TOTAL
12172 points/GHz
17683 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. 3.7.8