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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 215.5 k points while the i7-7700K gets 289.8 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
Mean monothread perf.
52.47k points
76.9k points
Mean multithread perf.
215.47k points
289.82k 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
i7-4790K
i7-7700K
Test#1 (Integers)
5.06k
4.63k (x0.91)
Test#2 (FP)
12.63k
18.92k (x1.5)
Test#3 (Generic, ZIP)
5.81k
6.22k (x1.07)
Test#1 (Memory)
4.96k
13.92k (x2.81)
TOTAL
28.47k
43.7k (x1.53)

Multithread

i7-4790K

i7-7700K
Test#1 (Integers)
18.28k
18.53k (x1.01)
Test#2 (FP)
64.07k
86.49k (x1.35)
Test#3 (Generic, ZIP)
27.52k
28.78k (x1.05)
Test#1 (Memory)
7.97k
9.67k (x1.21)
TOTAL
117.84k
143.47k (x1.22)

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)
15.8k
17.55k (x1.11)
Test#2 (FP)
14.35k
27.82k (x1.94)
Test#3 (Generic, ZIP)
5.97k
6.8k (x1.14)
Test#1 (Memory)
5.17k
14.83k (x2.87)
TOTAL
41.29k
67k (x1.62)

Multithread

i7-4790K

i7-7700K
Test#1 (Integers)
62.79k
68.4k (x1.09)
Test#2 (FP)
66.48k
118.8k (x1.79)
Test#3 (Generic, ZIP)
26.35k
33.34k (x1.27)
Test#1 (Memory)
8.74k
17.43k (x2)
TOTAL
164.36k
237.97k (x1.45)

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)
26.16k
30.44k (x1.16)
Test#2 (FP)
14.78k
26.91k (x1.82)
Test#3 (Generic, ZIP)
6.01k
6.25k (x1.04)
Test#1 (Memory)
5.52k
13.3k (x2.41)
TOTAL
52.47k
76.9k (x1.47)

Multithread

i7-4790K

i7-7700K
Test#1 (Integers)
107.76k
127.73k (x1.19)
Test#2 (FP)
70.84k
123.68k (x1.75)
Test#3 (Generic, ZIP)
27.99k
29.34k (x1.05)
Test#1 (Memory)
8.87k
9.08k (x1.02)
TOTAL
215.47k
289.82k (x1.35)

Performance/W
i7-4790K
i7-7700K
Test#1 (Integers)
1225 points/W
1345 points/W
Test#2 (FP)
805 points/W
1302 points/W
Test#3 (Generic, ZIP)
318 points/W
309 points/W
Test#1 (Memory)
101 points/W
96 points/W
TOTAL
2448 points/W
3051 points/W

Performance/GHz
i7-4790K
i7-7700K
Test#1 (Integers)
5946 points/GHz
6765 points/GHz
Test#2 (FP)
3359 points/GHz
5981 points/GHz
Test#3 (Generic, ZIP)
1366 points/GHz
1388 points/GHz
Test#1 (Memory)
1254 points/GHz
2955 points/GHz
TOTAL
11925 points/GHz
17089 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