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Core i7-9750H vs i7-7700K


Description
The i7-9750H is based on Coffee Lake architecture while the i7-7700K is based on Kaby Lake.

Using the multithread performance as a reference, the i7-9750H gets a score of 276.5 k points while the i7-7700K gets 289.9 k points.

Summarizing, the i7-7700K is 1 times faster than the i7-9750H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
906e9
Core
Coffee Lake-H
Kaby Lake-S
Architecture
Base frecuency
2.6 GHz
4.2 GHz
Boost frecuency
4.5 GHz
4.5 GHz
Socket
BGA 1440
LGA 1151
Cores/Threads
6/12
4/8
TDP
45 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
8192 kB
Date
April 2019
September 2016
Mean monothread perf.
62.92k points
76.98k points
Mean multithread perf.
276.46k points
289.9k 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
i7-9750H
i7-7700K
Test#1 (Integers)
4.53k
4.63k (x1.02)
Test#2 (FP)
18.24k
18.92k (x1.04)
Test#3 (Generic, ZIP)
5.76k
6.22k (x1.08)
Test#1 (Memory)
13.01k
13.92k (x1.07)
TOTAL
41.54k
43.7k (x1.05)

Multithread

i7-9750H

i7-7700K
Test#1 (Integers)
24.3k
18.53k (x0.76)
Test#2 (FP)
97.88k
86.49k (x0.88)
Test#3 (Generic, ZIP)
29.85k
28.78k (x0.96)
Test#1 (Memory)
11.93k
9.67k (x0.81)
TOTAL
163.95k
143.47k (x0.88)

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
i7-9750H
i7-7700K
Test#1 (Integers)
16.31k
17.55k (x1.08)
Test#2 (FP)
24.48k
27.82k (x1.14)
Test#3 (Generic, ZIP)
5.87k
6.8k (x1.16)
Test#1 (Memory)
13.02k
14.83k (x1.14)
TOTAL
59.67k
67k (x1.12)

Multithread

i7-9750H

i7-7700K
Test#1 (Integers)
87.54k
68.4k (x0.78)
Test#2 (FP)
131.05k
118.8k (x0.91)
Test#3 (Generic, ZIP)
28.47k
33.34k (x1.17)
Test#1 (Memory)
11.8k
17.43k (x1.48)
TOTAL
258.87k
237.97k (x0.92)

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
i7-9750H
i7-7700K
Test#1 (Integers)
25.22k
30.47k (x1.21)
Test#2 (FP)
21.97k
26.94k (x1.23)
Test#3 (Generic, ZIP)
5.02k
6.25k (x1.25)
Test#1 (Memory)
10.71k
13.32k (x1.24)
TOTAL
62.92k
76.98k (x1.22)

Multithread

i7-9750H

i7-7700K
Test#1 (Integers)
125.56k
127.81k (x1.02)
Test#2 (FP)
115.86k
123.7k (x1.07)
Test#3 (Generic, ZIP)
25.63k
29.34k (x1.14)
Test#1 (Memory)
9.4k
9.05k (x0.96)
TOTAL
276.46k
289.9k (x1.05)

Performance/W
i7-9750H
i7-7700K
Test#1 (Integers)
2790 points/W
1345 points/W
Test#2 (FP)
2575 points/W
1302 points/W
Test#3 (Generic, ZIP)
570 points/W
309 points/W
Test#1 (Memory)
209 points/W
95 points/W
TOTAL
6144 points/W
3052 points/W

Performance/GHz
i7-9750H
i7-7700K
Test#1 (Integers)
5605 points/GHz
6770 points/GHz
Test#2 (FP)
4882 points/GHz
5987 points/GHz
Test#3 (Generic, ZIP)
1115 points/GHz
1389 points/GHz
Test#1 (Memory)
2380 points/GHz
2960 points/GHz
TOTAL
13982 points/GHz
17106 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