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Core i7-7500U vs i7-4790K


Description
The i7-7500U is based on Kaby Lake architecture while the i7-4790K is based on Haswell.

Using the multithread performance as a reference, the i7-7500U gets a score of 86.9 k points while the i7-4790K gets 215.5 k points.

Summarizing, the i7-4790K is 2.5 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
306c3
Core
Kaby Lake-U
Haswell
Architecture
Base frecuency
2.7 GHz
4 GHz
Boost frecuency
3.5 GHz
4.4 GHz
Socket
BGA1356
LGA 1150
Cores/Threads
2/4
4/8
TDP
15 W
88 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
8192 kB
Date
August 2016
May 2014
Mean monothread perf.
48.67k points
52.47k points
Mean multithread perf.
86.94k points
215.47k 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
i7-7500U
i7-4790K
Test#1 (Integers)
3.53k
5.06k (x1.44)
Test#2 (FP)
14.67k
12.63k (x0.86)
Test#3 (Generic, ZIP)
4.84k
5.81k (x1.2)
Test#1 (Memory)
6.26k
4.96k (x0.79)
TOTAL
29.29k
28.47k (x0.97)

Multithread

i7-7500U

i7-4790K
Test#1 (Integers)
7.26k
18.28k (x2.52)
Test#2 (FP)
35.04k
64.07k (x1.83)
Test#3 (Generic, ZIP)
11.28k
27.52k (x2.44)
Test#1 (Memory)
5.69k
7.97k (x1.4)
TOTAL
59.27k
117.84k (x1.99)

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
i7-7500U
i7-4790K
Test#1 (Integers)
12.93k
15.6k (x1.21)
Test#2 (FP)
18.63k
13.92k (x0.75)
Test#3 (Generic, ZIP)
5.03k
6.12k (x1.22)
Test#1 (Memory)
6.16k
5k (x0.81)
TOTAL
42.75k
40.65k (x0.95)

Multithread

i7-7500U

i7-4790K
Test#1 (Integers)
27.13k
65.48k (x2.41)
Test#2 (FP)
43.19k
63.29k (x1.47)
Test#3 (Generic, ZIP)
11.7k
27.93k (x2.39)
Test#1 (Memory)
4.99k
7.84k (x1.57)
TOTAL
87.02k
164.54k (x1.89)

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
i7-7500U
i7-4790K
Test#1 (Integers)
12.71k
15.8k (x1.24)
Test#2 (FP)
18.61k
14.35k (x0.77)
Test#3 (Generic, ZIP)
4.78k
5.97k (x1.25)
Test#1 (Memory)
6.63k
5.17k (x0.78)
TOTAL
42.72k
41.29k (x0.97)

Multithread

i7-7500U

i7-4790K
Test#1 (Integers)
27.27k
62.79k (x2.3)
Test#2 (FP)
44.7k
66.48k (x1.49)
Test#3 (Generic, ZIP)
11.33k
26.35k (x2.33)
Test#1 (Memory)
5.55k
8.74k (x1.57)
TOTAL
88.86k
164.36k (x1.85)

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
i7-7500U
i7-4790K
Test#1 (Integers)
20.74k
26.16k (x1.26)
Test#2 (FP)
18.41k
14.78k (x0.8)
Test#3 (Generic, ZIP)
3.98k
6.01k (x1.51)
Test#1 (Memory)
5.54k
5.52k (x1)
TOTAL
48.67k
52.47k (x1.08)

Multithread

i7-7500U

i7-4790K
Test#1 (Integers)
37.34k
107.76k (x2.89)
Test#2 (FP)
35.79k
70.84k (x1.98)
Test#3 (Generic, ZIP)
8.34k
27.99k (x3.36)
Test#1 (Memory)
5.48k
8.87k (x1.62)
TOTAL
86.94k
215.47k (x2.48)

Performance/W
i7-7500U
i7-4790K
Test#1 (Integers)
2489 points/W
1225 points/W
Test#2 (FP)
2386 points/W
805 points/W
Test#3 (Generic, ZIP)
556 points/W
318 points/W
Test#1 (Memory)
365 points/W
101 points/W
TOTAL
5796 points/W
2448 points/W

Performance/GHz
i7-7500U
i7-4790K
Test#1 (Integers)
5926 points/GHz
5946 points/GHz
Test#2 (FP)
5260 points/GHz
3359 points/GHz
Test#3 (Generic, ZIP)
1137 points/GHz
1366 points/GHz
Test#1 (Memory)
1584 points/GHz
1254 points/GHz
TOTAL
13907 points/GHz
11925 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