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Core i7-9700F vs i9-9900K


Description
Both models i7-9700F 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 i7-9700F gets a score of 164.3 k points while the i9-9900K gets 263.4 k points.

Summarizing, the i9-9900K is 1.6 times faster than the i7-9700F. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
906ec
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
3 GHz
3.6 GHz
Boost frecuency
4.7 GHz
5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/8
8/16
TDP
65 W
95 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x256 kB
Cache L3
12288 kB
16384 kB
Date
April 2019
October 2018
Mean monothread perf.
60.93k points
86.24k points
Mean multithread perf.
269.85k points
545.3k 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
i7-9700F
i9-9900K
Test#1 (Integers)
4.67k
5.17k (x1.11)
Test#2 (FP)
17.16k
21.15k (x1.23)
Test#3 (Generic, ZIP)
5.7k
7.01k (x1.23)
Test#1 (Memory)
14.37k
15.32k (x1.07)
TOTAL
41.9k
48.66k (x1.16)

Multithread

i7-9700F

i9-9900K
Test#1 (Integers)
26.31k
38.45k (x1.46)
Test#2 (FP)
97.53k
155.68k (x1.6)
Test#3 (Generic, ZIP)
31.53k
51k (x1.62)
Test#1 (Memory)
8.94k
18.26k (x2.04)
TOTAL
164.31k
263.38k (x1.6)

Performance/W
i7-9700F
i9-9900K
Test#1 (Integers)
405 points/W
405 points/W
Test#2 (FP)
1500 points/W
1639 points/W
Test#3 (Generic, ZIP)
485 points/W
537 points/W
Test#1 (Memory)
138 points/W
192 points/W
TOTAL
2528 points/W
2772 points/W

Performance/GHz
i7-9700F
i9-9900K
Test#1 (Integers)
994 points/GHz
1034 points/GHz
Test#2 (FP)
3652 points/GHz
4230 points/GHz
Test#3 (Generic, ZIP)
1212 points/GHz
1402 points/GHz
Test#1 (Memory)
3057 points/GHz
3065 points/GHz
TOTAL
8915 points/GHz
9731 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