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Core i7-6820HQ vs i5-8500T


Description
The i7-6820HQ is based on Skylake architecture while the i5-8500T is based on Coffee Lake.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i5-8500T gets 251.8 k points.

Summarizing, the i5-8500T is 1.2 times faster than the i7-6820HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
906ea
Core
Skylake-H
Coffee Lake-S
Architecture
Base frecuency
2.7 GHz
2.1 GHz
Boost frecuency
3.6 GHz
3.5 GHz
Socket
BGA1440
LGA 1151
Cores/Threads
4/8
6/6
TDP
45 W
35 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
8192 kB
9216 kB
Date
October 2015
March 2018

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
i7-6820HQ
i5-8500T
Test#1 (Integers)
3180
3559 (11.94%)
Test#2 (FP)
13020
14758 (13.35%)
Test#3 (Generic, ZIP)
4169
4457 (6.92%)
Test#1 (Memory)
6931
8723 (25.85%)
TOTAL
27299
31497 (15.38%)

Multithread

i7-6820HQ

i5-8500T
Test#1 (Integers)
13259
19371 (46.10%)
Test#2 (FP)
62228
82354 (32.34%)
Test#3 (Generic, ZIP)
20342
24602 (20.94%)
Test#1 (Memory)
5464
2967 (-45.69%)
TOTAL
101292
129295 (27.65%)

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
i7-6820HQ
i5-8500T
Test#1 (Integers)
11536
12931 (12.09%)
Test#2 (FP)
16687
18613 (11.54%)
Test#3 (Generic, ZIP)
4514
4759 (5.42%)
Test#1 (Memory)
7273
10054 (38.24%)
TOTAL
40011
46358 (15.86%)

Multithread

i7-6820HQ

i5-8500T
Test#1 (Integers)
48501
71148 (46.69%)
Test#2 (FP)
77016
102739 (33.40%)
Test#3 (Generic, ZIP)
21301
26602 (24.89%)
Test#1 (Memory)
5242
2898 (-44.72%)
TOTAL
152060
203386 (33.75%)

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
i7-6820HQ
i5-8500T
Test#1 (Integers)
11784
12920 (9.64%)
Test#2 (FP)
18056
19465 (7.81%)
Test#3 (Generic, ZIP)
4479
4620 (3.15%)
Test#1 (Memory)
7117
9597 (34.85%)
TOTAL
41437
46603 (12.47%)

Multithread

i7-6820HQ

i5-8500T
Test#1 (Integers)
49458
71250 (44.06%)
Test#2 (FP)
84798
91157 (7.50%)
Test#3 (Generic, ZIP)
20703
24448 (18.09%)
Test#1 (Memory)
4770
2851 (-40.24%)
TOTAL
159730
189705 (18.77%)

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
i7-6820HQ
i5-8500T
Test#1 (Integers)
21147
23129 (9.37%)
Test#2 (FP)
18663
20698 (10.90%)
Test#3 (Generic, ZIP)
4359
4710 (8.03%)
Test#1 (Memory)
6240
10734 (72.02%)
TOTAL
50409
59270 (17.58%)

Multithread

i7-6820HQ

i5-8500T
Test#1 (Integers)
91901
125168 (36.20%)
Test#2 (FP)
87330
98070 (12.30%)
Test#3 (Generic, ZIP)
20715
25570 (23.44%)
Test#1 (Memory)
6325
3015 (-52.34%)
TOTAL
206271
251822 (22.08%)

Performance/W
i7-6820HQ
i5-8500T
Test#1 (Integers)
2042 points/W
3576 points/W
Test#2 (FP)
1941 points/W
2802 points/W
Test#3 (Generic, ZIP)
460 points/W
731 points/W
Test#1 (Memory)
141 points/W
86 points/W
TOTAL
4584 points/W
7195 points/W

Performance/GHz
i7-6820HQ
i5-8500T
Test#1 (Integers)
5874 points/GHz
6608 points/GHz
Test#2 (FP)
5184 points/GHz
5914 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1346 points/GHz
Test#1 (Memory)
1733 points/GHz
3067 points/GHz
TOTAL
14002 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. 3.7.8