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Core i9-9900K vs i7-4790K


Description
The i9-9900K is based on Coffee Lake architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the i9-9900K gets a score of 529.3 k points while the i7-4790K gets 215.5 k points.

Summarizing, the i9-9900K is 2.5 times faster than the i7-4790K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
306c3
Core
Coffee Lake-S
Haswell
Architecture
Base frecuency
3.6 GHz
4 GHz
Boost frecuency
5 GHz
4.4 GHz
Socket
LGA 1151
LGA 1150
Cores/Threads
8/16
4/8
TDP
95 W
88 W
Cache L1 (d+i)
8x32+8x32 kB
32+32 kB
Cache L2
8x256 kB
256 kB
Cache L3
16384 kB
8192 kB
Date
October 2018
May 2014
Mean monothread perf.
81.91k points
52.47k points
Mean multithread perf.
529.32k points
215.47k 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
i9-9900K
i7-4790K
Test#1 (Integers)
5k
5.06k (x1.01)
Test#2 (FP)
20.22k
12.63k (x0.62)
Test#3 (Generic, ZIP)
6.54k
5.81k (x0.89)
Test#1 (Memory)
13.78k
4.96k (x0.36)
TOTAL
45.53k
28.47k (x0.63)

Multithread

i9-9900K

i7-4790K
Test#1 (Integers)
36.39k
18.28k (x0.5)
Test#2 (FP)
166.55k
64.07k (x0.38)
Test#3 (Generic, ZIP)
54.92k
27.52k (x0.5)
Test#1 (Memory)
8.96k
7.97k (x0.89)
TOTAL
266.82k
117.84k (x0.44)

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
i9-9900K
i7-4790K
Test#1 (Integers)
18.03k
15.6k (x0.87)
Test#2 (FP)
25.98k
13.92k (x0.54)
Test#3 (Generic, ZIP)
6.86k
6.12k (x0.89)
Test#1 (Memory)
14.5k
5k (x0.34)
TOTAL
65.37k
40.65k (x0.62)

Multithread

i9-9900K

i7-4790K
Test#1 (Integers)
131.34k
65.48k (x0.5)
Test#2 (FP)
204.76k
63.29k (x0.31)
Test#3 (Generic, ZIP)
55.74k
27.93k (x0.5)
Test#1 (Memory)
8.99k
7.84k (x0.87)
TOTAL
400.83k
164.54k (x0.41)

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
i9-9900K
i7-4790K
Test#1 (Integers)
17.98k
15.8k (x0.88)
Test#2 (FP)
27.04k
14.35k (x0.53)
Test#3 (Generic, ZIP)
6.63k
5.97k (x0.9)
Test#1 (Memory)
13.6k
5.17k (x0.38)
TOTAL
65.24k
41.29k (x0.63)

Multithread

i9-9900K

i7-4790K
Test#1 (Integers)
130.88k
62.79k (x0.48)
Test#2 (FP)
208.5k
66.48k (x0.32)
Test#3 (Generic, ZIP)
54.12k
26.35k (x0.49)
Test#1 (Memory)
8.91k
8.74k (x0.98)
TOTAL
402.41k
164.36k (x0.41)

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
i9-9900K
i7-4790K
Test#1 (Integers)
32.08k
26.16k (x0.82)
Test#2 (FP)
28.17k
14.78k (x0.52)
Test#3 (Generic, ZIP)
6.68k
6.01k (x0.9)
Test#1 (Memory)
14.98k
5.52k (x0.37)
TOTAL
81.91k
52.47k (x0.64)

Multithread

i9-9900K

i7-4790K
Test#1 (Integers)
242.98k
107.76k (x0.44)
Test#2 (FP)
220.16k
70.84k (x0.32)
Test#3 (Generic, ZIP)
53.97k
27.99k (x0.52)
Test#1 (Memory)
12.22k
8.87k (x0.73)
TOTAL
529.32k
215.47k (x0.41)

Performance/W
i9-9900K
i7-4790K
Test#1 (Integers)
2558 points/W
1225 points/W
Test#2 (FP)
2317 points/W
805 points/W
Test#3 (Generic, ZIP)
568 points/W
318 points/W
Test#1 (Memory)
129 points/W
101 points/W
TOTAL
5572 points/W
2448 points/W

Performance/GHz
i9-9900K
i7-4790K
Test#1 (Integers)
6417 points/GHz
5946 points/GHz
Test#2 (FP)
5634 points/GHz
3359 points/GHz
Test#3 (Generic, ZIP)
1335 points/GHz
1366 points/GHz
Test#1 (Memory)
2996 points/GHz
1254 points/GHz
TOTAL
16382 points/GHz
11925 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