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Core i7-720QM vs i7-8550U


Description
The i7-720QM is based on Nehalem architecture while the i7-8550U is based on Kaby Lake.

Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the i7-8550U gets 127.9 k points.

Summarizing, the i7-8550U is 3.3 times faster than the i7-720QM. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106e5
806ea
Core
Clarksfield
Kaby Lake-R
Architecture
Base frecuency
1.6 GHz
1.8 GHz
Boost frecuency
2.8 GHz
4 GHz
Socket
988-pin micro-FCPGA8
BGA1356
Cores/Threads
4/8
4/8
TDP
45 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
6144 kB
8192 kB
Date
September 2009
August 2017
Mean monothread perf.
13.13k points
64.2k points
Mean multithread perf.
38.78k points
166.12k 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
i7-720QM
i7-8550U
Test#1 (Integers)
1.49k
3.91k (x2.62)
Test#2 (FP)
3.4k
15.98k (x4.69)
Test#3 (Generic, ZIP)
1.95k
5.11k (x2.62)
Test#1 (Memory)
2.08k
11.05k (x5.31)
TOTAL
8.92k
36.05k (x4.04)

Multithread

i7-720QM

i7-8550U
Test#1 (Integers)
4.23k
11.76k (x2.78)
Test#2 (FP)
11.4k
50.15k (x4.4)
Test#3 (Generic, ZIP)
7.17k
16.76k (x2.34)
Test#1 (Memory)
4.51k
4.17k (x0.92)
TOTAL
27.32k
82.84k (x3.03)

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
i7-720QM
i7-8550U
Test#1 (Integers)
5.49k
12.93k (x2.35)
Test#2 (FP)
3.55k
20.59k (x5.81)
Test#3 (Generic, ZIP)
2.01k
5.41k (x2.7)
Test#1 (Memory)
2.09k
10.48k (x5.02)
TOTAL
13.13k
49.41k (x3.76)

Multithread

i7-720QM

i7-8550U
Test#1 (Integers)
15.06k
41.11k (x2.73)
Test#2 (FP)
12.15k
65.04k (x5.35)
Test#3 (Generic, ZIP)
7.18k
17.53k (x2.44)
Test#1 (Memory)
4.39k
4.22k (x0.96)
TOTAL
38.78k
127.9k (x3.3)

Performance/W
i7-720QM
i7-8550U
Test#1 (Integers)
335 points/W
2741 points/W
Test#2 (FP)
270 points/W
4336 points/W
Test#3 (Generic, ZIP)
160 points/W
1169 points/W
Test#1 (Memory)
98 points/W
281 points/W
TOTAL
862 points/W
8527 points/W

Performance/GHz
i7-720QM
i7-8550U
Test#1 (Integers)
1962 points/GHz
3232 points/GHz
Test#2 (FP)
1267 points/GHz
5147 points/GHz
Test#3 (Generic, ZIP)
717 points/GHz
1353 points/GHz
Test#1 (Memory)
745 points/GHz
2620 points/GHz
TOTAL
4691 points/GHz
12351 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