Core i7-720QM vs i3-8100

Description

The i7-720QM is based on Nehalem architecture while the i3-8100 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the i3-8100 gets 152.9 k points.

Summarizing, the i3-8100 is 3.9 times faster than the i7-720QM. To get a proper comparison between both models, take a look to the data shown below.

Specs

i7-720QM

i3-8100

CPUID

106e5

906eb

Core

Clarksfield

Coffee Lake-S

Architecture

Nehalem

Coffee Lake

Base frecuency

1.6 GHz

3.6 GHz

Boost frecuency

2.8 GHz

3.6 GHz

Socket

988-pin micro-FCPGA8

LGA 1151

Cores/Threads

4/8

4/4

TDP

45 W

65 W

Cache L1 (d+i)

4x32+4x32 kB

Cache L2

4x256 kB

Cache L3

6144 kB

Date

September 2009

October 2017

Mean monothread perf.

13.13k points

59.18k points

Mean multithread perf.

38.78k points

200.4k 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

i3-8100

Test#1 (Integers)

1.49k

3.72k (x2.49)

Test#2 (FP)

3.4k

15.33k (x4.51)

Test#3 (Generic, ZIP)

1.95k

4.71k (x2.42)

Test#1 (Memory)

2.08k

6.76k (x3.25)

TOTAL

8.92k

30.52k (x3.42)

Multithread

i7-720QM

i3-8100

Test#1 (Integers)

4.23k

14.48k (x3.42)

Test#2 (FP)

11.4k

59.59k (x5.23)

Test#3 (Generic, ZIP)

7.17k

18.07k (x2.52)

Test#1 (Memory)

4.51k

4.3k (x0.95)

TOTAL

27.32k

96.43k (x3.53)

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

i3-8100

Test#1 (Integers)

5.49k

13.51k (x2.46)

Test#2 (FP)

3.55k

19.38k (x5.46)

Test#3 (Generic, ZIP)

2.01k

5.06k (x2.52)

Test#1 (Memory)

2.09k

7.87k (x3.77)

TOTAL

13.13k

45.81k (x3.49)

Multithread

i7-720QM

i3-8100

Test#1 (Integers)

15.06k

52.88k (x3.51)

Test#2 (FP)

12.15k

75.92k (x6.25)

Test#3 (Generic, ZIP)

7.18k

19.52k (x2.72)

Test#1 (Memory)

4.39k

4.53k (x1.03)

TOTAL

38.78k

152.86k (x3.94)

Performance/W

i7-720QM

i3-8100

Test#1 (Integers)

335 points/W

814 points/W

Test#2 (FP)

270 points/W

1168 points/W

Test#3 (Generic, ZIP)

160 points/W

300 points/W

Test#1 (Memory)

98 points/W

70 points/W

TOTAL

862 points/W

2352 points/W

Performance/GHz

i7-720QM

i3-8100

Test#1 (Integers)

1962 points/GHz

3753 points/GHz

Test#2 (FP)

1267 points/GHz

5383 points/GHz

Test#3 (Generic, ZIP)

717 points/GHz

1405 points/GHz

Test#1 (Memory)

745 points/GHz

2185 points/GHz

TOTAL

4691 points/GHz

12725 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]

Test#2 (FP) [points vs time]

Test#3 (Generic, ZIP) [points vs time]

Test#1 (Memory) [points vs time]

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]

Test#2 (FP) [points vs time]

Test#3 (Generic, ZIP) [points vs time]

Test#1 (Memory) [points vs time]

Hardlimit Benchmark Central - Ver. 3.11.4