Core i7-9750H vs i9-9900K
Description
Both models i7-9750H and i9-9900K are based on Coffee Lake architecture.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i7-9750H gets a score of 276.5 k points while the i9-9900K gets 529.3 k points.
Summarizing, the i9-9900K is 1.9 times faster than the i7-9750H. To get a proper comparison between both models, take a look to the data shown below.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i7-9750H gets a score of 276.5 k points while the i9-9900K gets 529.3 k points.
Summarizing, the i9-9900K is 1.9 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
906ed
Core
Coffee Lake-H
Coffee Lake-S
Base frecuency
2.6 GHz
3.6 GHz
Boost frecuency
4.5 GHz
5 GHz
Socket
BGA 1440
LGA 1151
Cores/Threads
6/12
8/16
TDP
45 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
8x32+8x32 kB
Cache L2
6x256 kB
8x256 kB
Cache L3
12288 kB
16384 kB
Date
April 2019
October 2018
Mean monothread perf.
62.92k points
81.91k points
Mean multithread perf.
276.46k points
529.32k 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
i9-9900K
Test#1 (Integers)
4.53k
5k (x1.1)
Test#2 (FP)
18.24k
20.22k (x1.11)
Test#3 (Generic, ZIP)
5.76k
6.54k (x1.14)
Test#1 (Memory)
13.01k
13.78k (x1.06)
TOTAL
41.54k
45.53k (x1.1)
Multithread
i7-9750H
i9-9900K
Test#1 (Integers)
24.3k
36.39k (x1.5)
Test#2 (FP)
97.88k
166.55k (x1.7)
Test#3 (Generic, ZIP)
29.85k
54.92k (x1.84)
Test#1 (Memory)
11.93k
8.96k (x0.75)
TOTAL
163.95k
266.82k (x1.63)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-9750H
i9-9900K
Test#1 (Integers)
16.32k
18.03k (x1.1)
Test#2 (FP)
23.42k
25.98k (x1.11)
Test#3 (Generic, ZIP)
6.04k
6.86k (x1.13)
Test#1 (Memory)
13.24k
14.5k (x1.1)
TOTAL
59.03k
65.37k (x1.11)
Multithread
i7-9750H
i9-9900K
Test#1 (Integers)
86.92k
131.34k (x1.51)
Test#2 (FP)
126.14k
204.76k (x1.62)
Test#3 (Generic, ZIP)
29.62k
55.74k (x1.88)
Test#1 (Memory)
11.86k
8.99k (x0.76)
TOTAL
254.54k
400.83k (x1.57)
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
i9-9900K
Test#1 (Integers)
16.31k
17.98k (x1.1)
Test#2 (FP)
24.48k
27.04k (x1.1)
Test#3 (Generic, ZIP)
5.87k
6.63k (x1.13)
Test#1 (Memory)
13.02k
13.6k (x1.04)
TOTAL
59.67k
65.24k (x1.09)
Multithread
i7-9750H
i9-9900K
Test#1 (Integers)
87.54k
130.88k (x1.5)
Test#2 (FP)
131.05k
208.5k (x1.59)
Test#3 (Generic, ZIP)
28.47k
54.12k (x1.9)
Test#1 (Memory)
11.8k
8.91k (x0.75)
TOTAL
258.87k
402.41k (x1.55)
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
i9-9900K
Test#1 (Integers)
25.22k
32.08k (x1.27)
Test#2 (FP)
21.97k
28.17k (x1.28)
Test#3 (Generic, ZIP)
5.02k
6.68k (x1.33)
Test#1 (Memory)
10.71k
14.98k (x1.4)
TOTAL
62.92k
81.91k (x1.3)
Multithread
i7-9750H
i9-9900K
Test#1 (Integers)
125.56k
242.98k (x1.94)
Test#2 (FP)
115.86k
220.16k (x1.9)
Test#3 (Generic, ZIP)
25.63k
53.97k (x2.11)
Test#1 (Memory)
9.4k
12.22k (x1.3)
TOTAL
276.46k
529.32k (x1.91)
Performance/W
i7-9750H
i9-9900K
Test#1 (Integers)
2790 points/W
2558 points/W
Test#2 (FP)
2575 points/W
2317 points/W
Test#3 (Generic, ZIP)
570 points/W
568 points/W
Test#1 (Memory)
209 points/W
129 points/W
TOTAL
6144 points/W
5572 points/W
Performance/GHz
i7-9750H
i9-9900K
Test#1 (Integers)
5605 points/GHz
6417 points/GHz
Test#2 (FP)
4882 points/GHz
5634 points/GHz
Test#3 (Generic, ZIP)
1115 points/GHz
1335 points/GHz
Test#1 (Memory)
2380 points/GHz
2996 points/GHz
TOTAL
13982 points/GHz
16382 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4