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Core i7-9700K vs i3-9100T


Description
Both models i7-9700K and i3-9100T 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 i7-9700K gets a score of 460 k points while the i3-9100T gets 192.9 k points.

Summarizing, the i7-9700K is 2.4 times faster than the i3-9100T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
906eb
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.6 GHz
3.1 GHz
Boost frecuency
4.9 GHz
3.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/8
4/4
TDP
95 W
35 W
Cache L1 (d+i)
8x32+8x32 kB
4x32+4x32 kB
Cache L2
8x256 kB
4x256 kB
Cache L3
12288 kB
6144 kB
Date
October 2018
June 2019
Mean monothread perf.
73.62k points
60.16k points
Mean multithread perf.
460.02k points
192.88k points

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
i7-9700K
i3-9100T
Test#1 (Integers)
29.3k
24.89k (x0.85)
Test#2 (FP)
25.61k
21.82k (x0.85)
Test#3 (Generic, ZIP)
5.86k
4.83k (x0.82)
Test#1 (Memory)
12.86k
8.63k (x0.67)
TOTAL
73.62k
60.16k (x0.82)

Multithread

i7-9700K

i3-9100T
Test#1 (Integers)
217.77k
89.4k (x0.41)
Test#2 (FP)
190.46k
81.19k (x0.43)
Test#3 (Generic, ZIP)
40.48k
18.06k (x0.45)
Test#1 (Memory)
11.31k
4.24k (x0.38)
TOTAL
460.02k
192.88k (x0.42)

Performance/W
i7-9700K
i3-9100T
Test#1 (Integers)
2292 points/W
2554 points/W
Test#2 (FP)
2005 points/W
2320 points/W
Test#3 (Generic, ZIP)
426 points/W
516 points/W
Test#1 (Memory)
119 points/W
121 points/W
TOTAL
4842 points/W
5511 points/W

Performance/GHz
i7-9700K
i3-9100T
Test#1 (Integers)
5981 points/GHz
6727 points/GHz
Test#2 (FP)
5226 points/GHz
5897 points/GHz
Test#3 (Generic, ZIP)
1195 points/GHz
1304 points/GHz
Test#1 (Memory)
2624 points/GHz
2331 points/GHz
TOTAL
15025 points/GHz
16260 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