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Core i7-8700k vs i5-9500T


Description
Both models i7-8700k and i5-9500T 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 443.8 k points while the i5-9500T gets 274 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
3.7 GHz
2.2 GHz
Boost frecuency
4.7 GHz
3.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
6/6
TDP
95 W
35 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
9216 kB
Date
October 2017
July 2019

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
i5-9500T
Test#1 (Integers)
4127
3735 (-9.50%)
Test#2 (FP)
16959
15409 (-9.14%)
Test#3 (Generic, ZIP)
5564
4621 (-16.95%)
Test#1 (Memory)
12845
10590 (-17.56%)
TOTAL
39495
34355 (-13.02%)

Multithread

i7-8700k

i5-9500T
Test#1 (Integers)
24011
20820 (-13.29%)
Test#2 (FP)
108690
85479 (-21.36%)
Test#3 (Generic, ZIP)
36616
23214 (-36.60%)
Test#1 (Memory)
9327
4114 (-55.89%)
TOTAL
178644
133627 (-25.20%)

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
i5-9500T
Test#1 (Integers)
12920
12403 (-4.00%)
Test#2 (FP)
20678
18406 (-10.99%)
Test#3 (Generic, ZIP)
5295
4686 (-11.50%)
Test#1 (Memory)
12587
10485 (-16.70%)
TOTAL
51480
45980 (-10.68%)

Multithread

i7-8700k

i5-9500T
Test#1 (Integers)
94259
74859 (-20.58%)
Test#2 (FP)
152549
105876 (-30.60%)
Test#3 (Generic, ZIP)
39735
22342 (-43.77%)
Test#1 (Memory)
8527
4006 (-53.02%)
TOTAL
295071
207084 (-29.82%)

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
i7-8700k
i5-9500T
Test#1 (Integers)
16874
13461 (-20.23%)
Test#2 (FP)
26119
20208 (-22.63%)
Test#3 (Generic, ZIP)
6329
4716 (-25.48%)
Test#1 (Memory)
13708
10252 (-25.21%)
TOTAL
63030
48638 (-22.83%)

Multithread

i7-8700k

i5-9500T
Test#1 (Integers)
105740
74649 (-29.40%)
Test#2 (FP)
180520
110856 (-38.59%)
Test#3 (Generic, ZIP)
44994
22079 (-50.93%)
Test#1 (Memory)
8512
4116 (-51.64%)
TOTAL
339766
211700 (-37.69%)

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
i7-8700k
i5-9500T
Test#1 (Integers)
31204
24496 (-21.50%)
Test#2 (FP)
27821
21407 (-23.05%)
Test#3 (Generic, ZIP)
6568
4818 (-26.64%)
Test#1 (Memory)
15004
10735 (-28.45%)
TOTAL
80598
61457 (-23.75%)

Multithread

i7-8700k

i5-9500T
Test#1 (Integers)
202422
134627 (-33.49%)
Test#2 (FP)
186332
113613 (-39.03%)
Test#3 (Generic, ZIP)
44958
21708 (-51.72%)
Test#1 (Memory)
10054
4068 (-59.54%)
TOTAL
443765
274017 (-38.25%)

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

Performance/GHz
i7-8700k
i5-9500T
Test#1 (Integers)
6639 points/GHz
6621 points/GHz
Test#2 (FP)
5919 points/GHz
5786 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1302 points/GHz
Test#1 (Memory)
3192 points/GHz
2901 points/GHz
TOTAL
17148 points/GHz
16610 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. 3.7.9