Core 2 Quad Q8400 vs Core i5-6400
Description
The Q8400 is based on Core architecture while the i5-6400 is based on Skylake.
Using the multithread performance as a reference, the Q8400 gets a score of 51.9 k points while the i5-6400 gets 129.5 k points.
Summarizing, the i5-6400 is 2.5 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 i5-6400 gets 129.5 k points.
Summarizing, the i5-6400 is 2.5 times faster than the Q8400 . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
1067a
506e3
Core
Yorkfield
Skylake-S
Base frecuency
2.666 GHz
2.7 GHz
Boost frecuency
2.666 GHz
3.3 GHz
Socket
LGA 775
LGA 1151
Cores/Threads
4/4
4/4
TDP
95 W
65 W
Cache L1 (d+i)
128+128 kB
4x32+4x32 kB
Cache L2
4096 kB
4x256 kB
Cache L3
0 kB
6144 kB
Date
April 2009
September 2015
Mean monothread perf.
14.04k points
48.05k points
Mean multithread perf.
51.92k points
174.05k 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
i5-6400
Test#1 (Integers)
2.44k
3.2k (x1.31)
Test#2 (FP)
6.24k
12.81k (x2.05)
Test#3 (Generic, ZIP)
2.62k
4.18k (x1.6)
Test#1 (Memory)
1.43k
4.3k (x3.02)
TOTAL
12.73k
24.49k (x1.92)
Multithread
Q8400
i5-6400
Test#1 (Integers)
9.71k
11.45k (x1.18)
Test#2 (FP)
24.81k
46.67k (x1.88)
Test#3 (Generic, ZIP)
10.51k
14.69k (x1.4)
Test#1 (Memory)
2.03k
5.92k (x2.92)
TOTAL
47.05k
78.73k (x1.67)
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
i5-6400
Test#1 (Integers)
3.08k
11.56k (x3.75)
Test#2 (FP)
6.8k
16.53k (x2.43)
Test#3 (Generic, ZIP)
2.73k
4.3k (x1.57)
Test#1 (Memory)
1.42k
3.97k (x2.8)
TOTAL
14.04k
36.36k (x2.59)
Multithread
Q8400
i5-6400
Test#1 (Integers)
12.25k
43.01k (x3.51)
Test#2 (FP)
26.84k
64.46k (x2.4)
Test#3 (Generic, ZIP)
10.82k
16.14k (x1.49)
Test#1 (Memory)
2.02k
5.91k (x2.93)
TOTAL
51.92k
129.51k (x2.49)
Performance/W
Q8400
i5-6400
Test#1 (Integers)
129 points/W
662 points/W
Test#2 (FP)
283 points/W
992 points/W
Test#3 (Generic, ZIP)
114 points/W
248 points/W
Test#1 (Memory)
21 points/W
91 points/W
TOTAL
547 points/W
1992 points/W
Performance/GHz
Q8400
i5-6400
Test#1 (Integers)
1157 points/GHz
3503 points/GHz
Test#2 (FP)
2551 points/GHz
5009 points/GHz
Test#3 (Generic, ZIP)
1025 points/GHz
1302 points/GHz
Test#1 (Memory)
532 points/GHz
1203 points/GHz
TOTAL
5265 points/GHz
11018 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