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Core i7-8700k vs i7-9700F


Description
Both models i7-8700k and i7-9700F 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 i7-8700k gets a score of 295.1 k points while the i7-9700F gets 269.9 k points.

Summarizing, the i7-8700k is 1.1 times faster than the i7-9700F. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906ed
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.7 GHz
3 GHz
Boost frecuency
4.7 GHz
4.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
8/8
TDP
95 W
65 W
Cache L1 (d+i)
6x32+6x32 kB
8x32+8x32 kB
Cache L2
6x256 kB
8x256 kB
Cache L3
12288 kB
12288 kB
Date
October 2017
April 2019
Mean monothread perf.
80.6k points
60.93k points
Mean multithread perf.
443.77k points
269.85k 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
i7-8700k
i7-9700F
Test#1 (Integers)
4.13k
4.67k (x1.13)
Test#2 (FP)
16.96k
17.16k (x1.01)
Test#3 (Generic, ZIP)
5.56k
5.7k (x1.02)
Test#1 (Memory)
12.85k
14.37k (x1.12)
TOTAL
39.5k
41.9k (x1.06)

Multithread

i7-8700k

i7-9700F
Test#1 (Integers)
24.01k
26.31k (x1.1)
Test#2 (FP)
108.69k
97.53k (x0.9)
Test#3 (Generic, ZIP)
36.62k
31.53k (x0.86)
Test#1 (Memory)
9.33k
8.94k (x0.96)
TOTAL
178.64k
164.31k (x0.92)

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
i7-8700k
i7-9700F
Test#1 (Integers)
12.92k
16.8k (x1.3)
Test#2 (FP)
20.68k
24.08k (x1.16)
Test#3 (Generic, ZIP)
5.3k
6.06k (x1.14)
Test#1 (Memory)
12.59k
13.98k (x1.11)
TOTAL
51.48k
60.93k (x1.18)

Multithread

i7-8700k

i7-9700F
Test#1 (Integers)
94.26k
92.79k (x0.98)
Test#2 (FP)
152.55k
135.13k (x0.89)
Test#3 (Generic, ZIP)
39.74k
33.29k (x0.84)
Test#1 (Memory)
8.53k
8.64k (x1.01)
TOTAL
295.07k
269.85k (x0.91)

Performance/W
i7-8700k
i7-9700F
Test#1 (Integers)
992 points/W
1428 points/W
Test#2 (FP)
1606 points/W
2079 points/W
Test#3 (Generic, ZIP)
418 points/W
512 points/W
Test#1 (Memory)
90 points/W
133 points/W
TOTAL
3106 points/W
4152 points/W

Performance/GHz
i7-8700k
i7-9700F
Test#1 (Integers)
2749 points/GHz
3575 points/GHz
Test#2 (FP)
4400 points/GHz
5124 points/GHz
Test#3 (Generic, ZIP)
1127 points/GHz
1290 points/GHz
Test#1 (Memory)
2678 points/GHz
2975 points/GHz
TOTAL
10953 points/GHz
12964 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