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Core 2 Duo T6400 vs Celeron N2840


Description
The T6400 is based on Core architecture while the N2840 is based on Silvermont.

Using the multithread performance as a reference, the T6400 gets a score of 17.1 k points while the N2840 gets 16.8 k points.

Summarizing, the T6400 is 1 times faster than the N2840. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
1067a
30678
Core
Penryn-3M
Bay Trail-M
Architecture
Base frecuency
2 GHz
2.167 GHz
Boost frecuency
2 GHz
2.58 GHz
Socket
FC-PGA
BGA1170
Cores/Threads
2/2
2/2
TDP
35 W
7,5 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x24 kB
Cache L2
2048 kB
1024 kB
Date
January 2009
July 2014
Mean monothread perf.
10.08k points
10.36k points
Mean multithread perf.
17.08k points
16.79k 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
T6400
N2840
Test#1 (Integers)
2.26k
4.8k (x2.13)
Test#2 (FP)
4.98k
2.47k (x0.5)
Test#3 (Generic, ZIP)
1.89k
1.86k (x0.99)
Test#1 (Memory)
0.96k
1.22k (x1.28)
TOTAL
10.08k
10.36k (x1.03)

Multithread

T6400

N2840
Test#1 (Integers)
4.06k
8.24k (x2.03)
Test#2 (FP)
8.53k
4.19k (x0.49)
Test#3 (Generic, ZIP)
3.38k
3.05k (x0.9)
Test#1 (Memory)
1.11k
1.32k (x1.18)
TOTAL
17.08k
16.79k (x0.98)

Performance/W
T6400
N2840
Test#1 (Integers)
116 points/W
1177 points/W
Test#2 (FP)
244 points/W
598 points/W
Test#3 (Generic, ZIP)
96 points/W
436 points/W
Test#1 (Memory)
32 points/W
188 points/W
TOTAL
488 points/W
2399 points/W

Performance/GHz
T6400
N2840
Test#1 (Integers)
1128 points/GHz
1861 points/GHz
Test#2 (FP)
2491 points/GHz
958 points/GHz
Test#3 (Generic, ZIP)
944 points/GHz
723 points/GHz
Test#1 (Memory)
478 points/GHz
472 points/GHz
TOTAL
5040 points/GHz
4015 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