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Core i5-9500T vs i7-8700k


Description
Both models i5-9500T and i7-8700k 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 i5-9500T gets a score of 274 k points while the i7-8700k gets 443.8 k points.

Summarizing, the i7-8700k is 1.6 times faster than the i5-9500T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906ea
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
2.2 GHz
3.7 GHz
Boost frecuency
3.7 GHz
4.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
6/12
TDP
35 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
9216 kB
12288 kB
Date
July 2019
October 2017
Mean monothread perf.
61.46k points
80.6k points
Mean multithread perf.
274.02k points
443.77k 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
i5-9500T
i7-8700k
Test#1 (Integers)
3.73k
4.13k (x1.1)
Test#2 (FP)
15.41k
16.96k (x1.1)
Test#3 (Generic, ZIP)
4.62k
5.56k (x1.2)
Test#1 (Memory)
10.59k
12.85k (x1.21)
TOTAL
34.35k
39.5k (x1.15)

Multithread

i5-9500T

i7-8700k
Test#1 (Integers)
20.82k
24.01k (x1.15)
Test#2 (FP)
85.48k
108.69k (x1.27)
Test#3 (Generic, ZIP)
23.21k
36.62k (x1.58)
Test#1 (Memory)
4.11k
9.33k (x2.27)
TOTAL
133.63k
178.64k (x1.34)

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
i5-9500T
i7-8700k
Test#1 (Integers)
12.4k
12.92k (x1.04)
Test#2 (FP)
18.41k
20.68k (x1.12)
Test#3 (Generic, ZIP)
4.69k
5.3k (x1.13)
Test#1 (Memory)
10.48k
12.59k (x1.2)
TOTAL
45.98k
51.48k (x1.12)

Multithread

i5-9500T

i7-8700k
Test#1 (Integers)
74.86k
94.26k (x1.26)
Test#2 (FP)
105.88k
152.55k (x1.44)
Test#3 (Generic, ZIP)
22.34k
39.74k (x1.78)
Test#1 (Memory)
4.01k
8.53k (x2.13)
TOTAL
207.08k
295.07k (x1.42)

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
i5-9500T
i7-8700k
Test#1 (Integers)
13.46k
16.87k (x1.25)
Test#2 (FP)
20.21k
26.12k (x1.29)
Test#3 (Generic, ZIP)
4.72k
6.33k (x1.34)
Test#1 (Memory)
10.25k
13.71k (x1.34)
TOTAL
48.64k
63.03k (x1.3)

Multithread

i5-9500T

i7-8700k
Test#1 (Integers)
74.65k
105.74k (x1.42)
Test#2 (FP)
110.86k
180.52k (x1.63)
Test#3 (Generic, ZIP)
22.08k
44.99k (x2.04)
Test#1 (Memory)
4.12k
8.51k (x2.07)
TOTAL
211.7k
339.77k (x1.6)

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
i5-9500T
i7-8700k
Test#1 (Integers)
24.5k
31.2k (x1.27)
Test#2 (FP)
21.41k
27.82k (x1.3)
Test#3 (Generic, ZIP)
4.82k
6.57k (x1.36)
Test#1 (Memory)
10.73k
15k (x1.4)
TOTAL
61.46k
80.6k (x1.31)

Multithread

i5-9500T

i7-8700k
Test#1 (Integers)
134.63k
202.42k (x1.5)
Test#2 (FP)
113.61k
186.33k (x1.64)
Test#3 (Generic, ZIP)
21.71k
44.96k (x2.07)
Test#1 (Memory)
4.07k
10.05k (x2.47)
TOTAL
274.02k
443.77k (x1.62)

Performance/W
i5-9500T
i7-8700k
Test#1 (Integers)
3846 points/W
2131 points/W
Test#2 (FP)
3246 points/W
1961 points/W
Test#3 (Generic, ZIP)
620 points/W
473 points/W
Test#1 (Memory)
116 points/W
106 points/W
TOTAL
7829 points/W
4671 points/W

Performance/GHz
i5-9500T
i7-8700k
Test#1 (Integers)
6621 points/GHz
6639 points/GHz
Test#2 (FP)
5786 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1302 points/GHz
1397 points/GHz
Test#1 (Memory)
2901 points/GHz
3192 points/GHz
TOTAL
16610 points/GHz
17148 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