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Pentium 4405U vs Core 2 Quad Q8400


Description
The 4405U is based on Skylake architecture while the Q8400 is based on Core.

Using the multithread performance as a reference, the 4405U gets a score of 51.1 k points while the Q8400 gets 51.9 k points.

Summarizing, the Q8400 is 1 times faster than the 4405U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
1067a
Core
Skylake-U
Yorkfield
Architecture
Base frecuency
2.1 GHz
2.666 GHz
Socket
BGA 1356
LGA 775
Cores/Threads
2/4
4/4
TDP
15 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
128+128 kB
Cache L2
2x256 kB
4096 kB
Cache L3
2048 kB
0 kB
Date
April 2009
Mean monothread perf.
23.33k points
14.04k points
Mean multithread perf.
51.1k points
51.92k points

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
4405U
Q8400
Test#1 (Integers)
7.45k
3.08k (x0.41)
Test#2 (FP)
10.51k
6.8k (x0.65)
Test#3 (Generic, ZIP)
2.78k
2.73k (x0.98)
Test#1 (Memory)
2.59k
1.42k (x0.55)
TOTAL
23.33k
14.04k (x0.6)

Multithread

4405U

Q8400
Test#1 (Integers)
16.1k
12.25k (x0.76)
Test#2 (FP)
25.44k
26.84k (x1.05)
Test#3 (Generic, ZIP)
6.99k
10.82k (x1.55)
Test#1 (Memory)
2.58k
2.02k (x0.78)
TOTAL
51.1k
51.92k (x1.02)

Performance/W
4405U
Q8400
Test#1 (Integers)
1073 points/W
129 points/W
Test#2 (FP)
1696 points/W
283 points/W
Test#3 (Generic, ZIP)
466 points/W
114 points/W
Test#1 (Memory)
172 points/W
21 points/W
TOTAL
3407 points/W
547 points/W

Performance/GHz
4405U
Q8400
Test#1 (Integers)
3547 points/GHz
1157 points/GHz
Test#2 (FP)
5007 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
1324 points/GHz
1025 points/GHz
Test#1 (Memory)
1232 points/GHz
532 points/GHz
TOTAL
11109 points/GHz
5265 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