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Core 2 Quad Q8400 vs Core i3-6006U


Description
The Q8400 is based on Core architecture while the i3-6006U is based on Skylake.

Using the multithread performance as a reference, the Q8400 gets a score of 51.9 k points while the i3-6006U gets 47.5 k points.

Summarizing, the Q8400 is 1.1 times faster than the i3-6006U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
406e3
Core
Yorkfield
Skylake-U
Architecture
Base frecuency
2.666 GHz
2 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
2x256 kB
Cache L3
0 kB
3072 kB
Date
April 2009
November 2016
Mean monothread perf.
14.04k points
31.3k points
Mean multithread perf.
51.92k points
68.38k 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
i3-6006U
Test#1 (Integers)
2.44k
2.02k (x0.83)
Test#2 (FP)
6.24k
8.2k (x1.31)
Test#3 (Generic, ZIP)
2.62k
2.63k (x1)
Test#1 (Memory)
1.43k
3.92k (x2.75)
TOTAL
12.73k
16.77k (x1.32)

Multithread

Q8400

i3-6006U
Test#1 (Integers)
9.71k
3.83k (x0.39)
Test#2 (FP)
24.81k
17.17k (x0.69)
Test#3 (Generic, ZIP)
10.51k
5.77k (x0.55)
Test#1 (Memory)
2.03k
3.62k (x1.78)
TOTAL
47.05k
30.39k (x0.65)

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
i3-6006U
Test#1 (Integers)
3.08k
7.28k (x2.36)
Test#2 (FP)
6.8k
10.51k (x1.55)
Test#3 (Generic, ZIP)
2.73k
2.81k (x1.03)
Test#1 (Memory)
1.42k
2.88k (x2.03)
TOTAL
14.04k
23.48k (x1.67)

Multithread

Q8400

i3-6006U
Test#1 (Integers)
12.25k
14.98k (x1.22)
Test#2 (FP)
26.84k
23.68k (x0.88)
Test#3 (Generic, ZIP)
10.82k
6.37k (x0.59)
Test#1 (Memory)
2.02k
2.43k (x1.21)
TOTAL
51.92k
47.46k (x0.91)

Performance/W
Q8400
i3-6006U
Test#1 (Integers)
129 points/W
998 points/W
Test#2 (FP)
283 points/W
1579 points/W
Test#3 (Generic, ZIP)
114 points/W
425 points/W
Test#1 (Memory)
21 points/W
162 points/W
TOTAL
547 points/W
3164 points/W

Performance/GHz
Q8400
i3-6006U
Test#1 (Integers)
1157 points/GHz
3640 points/GHz
Test#2 (FP)
2551 points/GHz
5255 points/GHz
Test#3 (Generic, ZIP)
1025 points/GHz
1404 points/GHz
Test#1 (Memory)
532 points/GHz
1441 points/GHz
TOTAL
5265 points/GHz
11739 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