Core 2 Quad Q8400 vs Core i7-6500U
Description
The Q8400 is based on Core architecture while the i7-6500U is based on Skylake.
Using the multithread performance as a reference, the Q8400 gets a score of 51.9 k points while the i7-6500U gets 76.8 k points.
Summarizing, the i7-6500U is 1.5 times faster than the Q8400 . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the Q8400 gets a score of 51.9 k points while the i7-6500U gets 76.8 k points.
Summarizing, the i7-6500U is 1.5 times faster than the Q8400 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
1067a
406e3
Core
Yorkfield
Skylake-U
Base frecuency
2.666 GHz
2.5 GHz
Boost frecuency
2.666 GHz
3.1 GHz
Socket
LGA 775
BGA1356
Cores/Threads
4/4
2/4
TDP
95 W
15 W
Cache L1 (d+i)
128+128 kB
2x32+2x32 kB
Cache L2
4096 kB
4096 kB
Cache L3
0 kB
kB
Date
April 2009
September 2015
Mean monothread perf.
14.04k points
46.25k points
Mean multithread perf.
51.92k points
97.52k 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
i7-6500U
Test#1 (Integers)
2.44k
2.98k (x1.22)
Test#2 (FP)
6.24k
12.19k (x1.95)
Test#3 (Generic, ZIP)
2.62k
3.91k (x1.49)
Test#1 (Memory)
1.43k
5.3k (x3.71)
TOTAL
12.73k
24.37k (x1.92)
Multithread
Q8400
i7-6500U
Test#1 (Integers)
9.71k
6.1k (x0.63)
Test#2 (FP)
24.81k
28.73k (x1.16)
Test#3 (Generic, ZIP)
10.51k
9.56k (x0.91)
Test#1 (Memory)
2.03k
6.71k (x3.31)
TOTAL
47.05k
51.09k (x1.09)
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
Q8400
i7-6500U
Test#1 (Integers)
3.08k
11.11k (x3.6)
Test#2 (FP)
6.8k
15.97k (x2.35)
Test#3 (Generic, ZIP)
2.73k
4.25k (x1.55)
Test#1 (Memory)
1.42k
5.66k (x4)
TOTAL
14.04k
36.99k (x2.64)
Multithread
Q8400
i7-6500U
Test#1 (Integers)
12.25k
23.1k (x1.89)
Test#2 (FP)
26.84k
36.73k (x1.37)
Test#3 (Generic, ZIP)
10.82k
9.99k (x0.92)
Test#1 (Memory)
2.02k
7k (x3.47)
TOTAL
51.92k
76.82k (x1.48)
Performance/W
Q8400
i7-6500U
Test#1 (Integers)
129 points/W
1540 points/W
Test#2 (FP)
283 points/W
2449 points/W
Test#3 (Generic, ZIP)
114 points/W
666 points/W
Test#1 (Memory)
21 points/W
467 points/W
TOTAL
547 points/W
5121 points/W
Performance/GHz
Q8400
i7-6500U
Test#1 (Integers)
1157 points/GHz
3582 points/GHz
Test#2 (FP)
2551 points/GHz
5152 points/GHz
Test#3 (Generic, ZIP)
1025 points/GHz
1370 points/GHz
Test#1 (Memory)
532 points/GHz
1827 points/GHz
TOTAL
5265 points/GHz
11932 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.
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.
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