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Core i7-7700 vs i9-9900K


Description
The i7-7700 is based on Kaby Lake architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the i7-7700 gets a score of 257.5 k points while the i9-9900K gets 529.3 k points.

Summarizing, the i9-9900K is 2.1 times faster than the i7-7700 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
906ed
Core
Kaby Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.6 GHz
3.6 GHz
Boost frecuency
4.2 GHz
5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
8/16
TDP
65 W
95 W
Cache L1 (d+i)
32+32 kB
8x32+8x32 kB
Cache L2
256 kB
8x256 kB
Cache L3
8192 kB
16384 kB
Date
September 2016
October 2018
Mean monothread perf.
67.33k points
81.91k points
Mean multithread perf.
257.52k 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
i7-7700
i9-9900K
Test#1 (Integers)
4.23k
5k (x1.18)
Test#2 (FP)
16.76k
20.22k (x1.21)
Test#3 (Generic, ZIP)
5.42k
6.54k (x1.21)
Test#1 (Memory)
12.23k
13.78k (x1.13)
TOTAL
38.64k
45.53k (x1.18)

Multithread

i7-7700

i9-9900K
Test#1 (Integers)
16.71k
36.39k (x2.18)
Test#2 (FP)
73.1k
166.55k (x2.28)
Test#3 (Generic, ZIP)
25.76k
54.92k (x2.13)
Test#1 (Memory)
7.12k
8.96k (x1.26)
TOTAL
122.68k
266.82k (x2.17)

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
i7-7700
i9-9900K
Test#1 (Integers)
15.33k
18.03k (x1.18)
Test#2 (FP)
21.94k
25.98k (x1.18)
Test#3 (Generic, ZIP)
5.85k
6.86k (x1.17)
Test#1 (Memory)
12.52k
14.5k (x1.16)
TOTAL
55.64k
65.37k (x1.17)

Multithread

i7-7700

i9-9900K
Test#1 (Integers)
61.73k
131.34k (x2.13)
Test#2 (FP)
99.91k
204.76k (x2.05)
Test#3 (Generic, ZIP)
27.03k
55.74k (x2.06)
Test#1 (Memory)
9.28k
8.99k (x0.97)
TOTAL
197.96k
400.83k (x2.02)

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
i7-7700
i9-9900K
Test#1 (Integers)
15.34k
17.98k (x1.17)
Test#2 (FP)
23.41k
27.04k (x1.15)
Test#3 (Generic, ZIP)
5.87k
6.63k (x1.13)
Test#1 (Memory)
11.07k
13.6k (x1.23)
TOTAL
55.69k
65.24k (x1.17)

Multithread

i7-7700

i9-9900K
Test#1 (Integers)
62.68k
130.88k (x2.09)
Test#2 (FP)
105.24k
208.5k (x1.98)
Test#3 (Generic, ZIP)
26.35k
54.12k (x2.05)
Test#1 (Memory)
5.79k
8.91k (x1.54)
TOTAL
200.07k
402.41k (x2.01)

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
i7-7700
i9-9900K
Test#1 (Integers)
26.7k
32.08k (x1.2)
Test#2 (FP)
23.7k
28.17k (x1.19)
Test#3 (Generic, ZIP)
5.46k
6.68k (x1.22)
Test#1 (Memory)
11.48k
14.98k (x1.3)
TOTAL
67.33k
81.91k (x1.22)

Multithread

i7-7700

i9-9900K
Test#1 (Integers)
115.97k
242.98k (x2.1)
Test#2 (FP)
108.43k
220.16k (x2.03)
Test#3 (Generic, ZIP)
26.28k
53.97k (x2.05)
Test#1 (Memory)
6.85k
12.22k (x1.78)
TOTAL
257.52k
529.32k (x2.06)

Performance/W
i7-7700
i9-9900K
Test#1 (Integers)
1784 points/W
2558 points/W
Test#2 (FP)
1668 points/W
2317 points/W
Test#3 (Generic, ZIP)
404 points/W
568 points/W
Test#1 (Memory)
105 points/W
129 points/W
TOTAL
3962 points/W
5572 points/W

Performance/GHz
i7-7700
i9-9900K
Test#1 (Integers)
6356 points/GHz
6417 points/GHz
Test#2 (FP)
5643 points/GHz
5634 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1335 points/GHz
Test#1 (Memory)
2733 points/GHz
2996 points/GHz
TOTAL
16032 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.


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