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Core 2 Quad Q8400 vs Core i7-8750H


Description
The Q8400 is based on Core architecture while the i7-8750H is based on Coffee Lake.

Using the multithread performance as a reference, the Q8400 gets a score of 47.1 k points while the i7-8750H gets 52.2 k points.

Summarizing, the i7-8750H is 1.1 times faster than the Q8400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
906ea
Core
Yorkfield
Coffee Lake-H
Architecture
Base frecuency
2.666 GHz
2.2 GHz
Boost frecuency
2.666 GHz
4.1 GHz
Socket
LGA 775
BGA1440
Cores/Threads
4/4
6/12
TDP
95 W
45 W
Cache L1 (d+i)
128+128 kB
6x32+6x32 kB
Cache L2
4096 kB
6x256 kB
Cache L3
0 kB
9216 kB
Date
April 2009
April 2018
Mean monothread perf.
14.04k points
53.41k points
Mean multithread perf.
51.92k points
231.9k 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
Q8400
i7-8750H
Test#1 (Integers)
2.44k
3.01k (x1.23)
Test#2 (FP)
6.24k
11.68k (x1.87)
Test#3 (Generic, ZIP)
2.62k
3.78k (x1.44)
Test#1 (Memory)
1.43k
5.64k (x3.95)
TOTAL
12.73k
24.12k (x1.9)

Multithread

Q8400

i7-8750H
Test#1 (Integers)
9.71k
7.4k (x0.76)
Test#2 (FP)
24.81k
29.99k (x1.21)
Test#3 (Generic, ZIP)
10.51k
9.66k (x0.92)
Test#1 (Memory)
2.03k
5.12k (x2.53)
TOTAL
47.05k
52.18k (x1.11)

Performance/W
Q8400
i7-8750H
Test#1 (Integers)
102 points/W
165 points/W
Test#2 (FP)
261 points/W
667 points/W
Test#3 (Generic, ZIP)
111 points/W
215 points/W
Test#1 (Memory)
21 points/W
114 points/W
TOTAL
495 points/W
1160 points/W

Performance/GHz
Q8400
i7-8750H
Test#1 (Integers)
916 points/GHz
734 points/GHz
Test#2 (FP)
2340 points/GHz
2850 points/GHz
Test#3 (Generic, ZIP)
983 points/GHz
922 points/GHz
Test#1 (Memory)
535 points/GHz
1377 points/GHz
TOTAL
4774 points/GHz
5883 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