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Core i5-8500 vs i5-8500T


Description
Both models i5-8500 and i5-8500T 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 i5-8500 gets a score of 307.5 k points while the i5-8500T gets 251.8 k points.

Summarizing, the i5-8500 is 1.2 times faster than the i5-8500T. 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 GHz
2.1 GHz
Boost frecuency
4.1 GHz
3.5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
6/6
TDP
65 W
35 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
9216 kB
9216 kB
Date
March 2018
March 2018
Mean monothread perf.
69.09k points
59.27k points
Mean multithread perf.
307.52k points
251.82k 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
i5-8500
i5-8500T
Test#1 (Integers)
4.19k
3.56k (x0.85)
Test#2 (FP)
17.38k
14.76k (x0.85)
Test#3 (Generic, ZIP)
5.46k
4.46k (x0.82)
Test#1 (Memory)
11.92k
8.72k (x0.73)
TOTAL
38.96k
31.5k (x0.81)

Multithread

i5-8500

i5-8500T
Test#1 (Integers)
27.67k
19.37k (x0.7)
Test#2 (FP)
94.07k
82.35k (x0.88)
Test#3 (Generic, ZIP)
29.05k
24.6k (x0.85)
Test#1 (Memory)
4.39k
2.97k (x0.68)
TOTAL
155.18k
129.29k (x0.83)

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
i5-8500
i5-8500T
Test#1 (Integers)
15.22k
12.93k (x0.85)
Test#2 (FP)
22.02k
18.61k (x0.85)
Test#3 (Generic, ZIP)
5.75k
4.76k (x0.83)
Test#1 (Memory)
12.17k
10.05k (x0.83)
TOTAL
55.17k
46.36k (x0.84)

Multithread

i5-8500

i5-8500T
Test#1 (Integers)
87.78k
71.15k (x0.81)
Test#2 (FP)
126.73k
102.74k (x0.81)
Test#3 (Generic, ZIP)
32.93k
26.6k (x0.81)
Test#1 (Memory)
4.22k
2.9k (x0.69)
TOTAL
251.65k
203.39k (x0.81)

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
i5-8500
i5-8500T
Test#1 (Integers)
15.21k
12.92k (x0.85)
Test#2 (FP)
22.94k
19.47k (x0.85)
Test#3 (Generic, ZIP)
5.54k
4.62k (x0.83)
Test#1 (Memory)
11.39k
9.6k (x0.84)
TOTAL
55.07k
46.6k (x0.85)

Multithread

i5-8500

i5-8500T
Test#1 (Integers)
79.52k
71.25k (x0.9)
Test#2 (FP)
107.78k
91.16k (x0.85)
Test#3 (Generic, ZIP)
31.89k
24.45k (x0.77)
Test#1 (Memory)
13.37k
2.85k (x0.21)
TOTAL
232.55k
189.71k (x0.82)

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
i5-8500
i5-8500T
Test#1 (Integers)
27.36k
23.13k (x0.85)
Test#2 (FP)
24.27k
20.7k (x0.85)
Test#3 (Generic, ZIP)
5.69k
4.71k (x0.83)
Test#1 (Memory)
11.77k
10.73k (x0.91)
TOTAL
69.09k
59.27k (x0.86)

Multithread

i5-8500

i5-8500T
Test#1 (Integers)
144.77k
125.17k (x0.86)
Test#2 (FP)
129.04k
98.07k (x0.76)
Test#3 (Generic, ZIP)
29.53k
25.57k (x0.87)
Test#1 (Memory)
4.18k
3.01k (x0.72)
TOTAL
307.52k
251.82k (x0.82)

Performance/W
i5-8500
i5-8500T
Test#1 (Integers)
2227 points/W
3576 points/W
Test#2 (FP)
1985 points/W
2802 points/W
Test#3 (Generic, ZIP)
454 points/W
731 points/W
Test#1 (Memory)
64 points/W
86 points/W
TOTAL
4731 points/W
7195 points/W

Performance/GHz
i5-8500
i5-8500T
Test#1 (Integers)
6673 points/GHz
6608 points/GHz
Test#2 (FP)
5920 points/GHz
5914 points/GHz
Test#3 (Generic, ZIP)
1388 points/GHz
1346 points/GHz
Test#1 (Memory)
2870 points/GHz
3067 points/GHz
TOTAL
16850 points/GHz
16934 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