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Core i7-7020U vs Pentium 4405U


Description
The i7-7020U is based on Kaby Lake architecture while the 4405U is based on Skylake.

Using the multithread performance as a reference, the i7-7020U gets a score of 57.3 k points while the 4405U gets 51.1 k points.

Summarizing, the i7-7020U is 1.1 times faster than the 4405U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
406e3
Core
Kaby Lake-U
Skylake-U
Architecture
Base frecuency
2.3 GHz
2.1 GHz
Socket
BGA 1356
BGA 1356
Cores/Threads
2/4
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
3072 kB
2048 kB
Date
April 2018
Mean monothread perf.
33.63k points
23.33k points
Mean multithread perf.
73.15k points
51.1k points

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
i7-7020U
4405U
Test#1 (Integers)
8.18k
7.45k (x0.91)
Test#2 (FP)
11.67k
10.51k (x0.9)
Test#3 (Generic, ZIP)
2.97k
2.78k (x0.94)
Test#1 (Memory)
4.68k
2.59k (x0.55)
TOTAL
27.5k
23.33k (x0.85)

Multithread

i7-7020U

4405U
Test#1 (Integers)
17.51k
16.1k (x0.92)
Test#2 (FP)
27.61k
25.44k (x0.92)
Test#3 (Generic, ZIP)
7.39k
6.99k (x0.95)
Test#1 (Memory)
4.78k
2.58k (x0.54)
TOTAL
57.3k
51.1k (x0.89)

Performance/W
i7-7020U
4405U
Test#1 (Integers)
1168 points/W
1073 points/W
Test#2 (FP)
1841 points/W
1696 points/W
Test#3 (Generic, ZIP)
493 points/W
466 points/W
Test#1 (Memory)
319 points/W
172 points/W
TOTAL
3820 points/W
3407 points/W

Performance/GHz
i7-7020U
4405U
Test#1 (Integers)
3555 points/GHz
3547 points/GHz
Test#2 (FP)
5073 points/GHz
5007 points/GHz
Test#3 (Generic, ZIP)
1293 points/GHz
1324 points/GHz
Test#1 (Memory)
2034 points/GHz
1232 points/GHz
TOTAL
11956 points/GHz
11109 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