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Celeron N2840 vs Core 2 Quad Q8400


Description
The N2840 is based on Silvermont architecture while the Q8400 is based on Core.

Using the multithread performance as a reference, the N2840 gets a score of 16.8 k points while the Q8400 gets 51.9 k points.

Summarizing, the Q8400 is 3.1 times faster than the N2840. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
30678
1067a
Core
Bay Trail-M
Yorkfield
Architecture
Base frecuency
2.167 GHz
2.666 GHz
Boost frecuency
2.58 GHz
2.666 GHz
Socket
BGA1170
LGA 775
Cores/Threads
2/2
4/4
TDP
7,5 W
95 W
Cache L1 (d+i)
2x32+2x24 kB
128+128 kB
Cache L2
1024 kB
4096 kB
Date
July 2014
April 2009
Mean monothread perf.
10.36k points
14.04k points
Mean multithread perf.
16.79k 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
N2840
Q8400
Test#1 (Integers)
4.8k
3.08k (x0.64)
Test#2 (FP)
2.47k
6.8k (x2.75)
Test#3 (Generic, ZIP)
1.86k
2.73k (x1.47)
Test#1 (Memory)
1.22k
1.42k (x1.16)
TOTAL
10.36k
14.04k (x1.35)

Multithread

N2840

Q8400
Test#1 (Integers)
8.24k
12.25k (x1.49)
Test#2 (FP)
4.19k
26.84k (x6.41)
Test#3 (Generic, ZIP)
3.05k
10.82k (x3.55)
Test#1 (Memory)
1.32k
2.02k (x1.53)
TOTAL
16.79k
51.92k (x3.09)

Performance/W
N2840
Q8400
Test#1 (Integers)
1177 points/W
129 points/W
Test#2 (FP)
598 points/W
283 points/W
Test#3 (Generic, ZIP)
436 points/W
114 points/W
Test#1 (Memory)
188 points/W
21 points/W
TOTAL
2399 points/W
547 points/W

Performance/GHz
N2840
Q8400
Test#1 (Integers)
1861 points/GHz
1157 points/GHz
Test#2 (FP)
958 points/GHz
2551 points/GHz
Test#3 (Generic, ZIP)
723 points/GHz
1025 points/GHz
Test#1 (Memory)
472 points/GHz
532 points/GHz
TOTAL
4015 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