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Pentium D 925 vs Celeron N2840


Description
The 925 is based on NetBurst architecture while the N2840 is based on Silvermont.

Using the multithread performance as a reference, the 925 gets a score of 14 k points while the N2840 gets 16.8 k points.

Summarizing, the N2840 is 1.2 times faster than the 925. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
f65
30678
Core
Presler
Bay Trail-M
Architecture
Base frecuency
3 GHz
2.167 GHz
Boost frecuency
3 GHz
2.58 GHz
Socket
LGA 775
BGA1170
Cores/Threads
2/2
2/2
TDP
95 W
7,5 W
Cache L1 (d+i)
16+8 kB
2x32+2x24 kB
Cache L2
4096 kB
1024 kB
Date
October 2006
July 2014
Mean monothread perf.
7.7k points
10.36k points
Mean multithread perf.
14.03k 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
925
N2840
Test#1 (Integers)
2.06k
4.8k (x2.33)
Test#2 (FP)
3.32k
2.47k (x0.75)
Test#3 (Generic, ZIP)
1.52k
1.86k (x1.23)
Test#1 (Memory)
0.8k
1.22k (x1.53)
TOTAL
7.7k
10.36k (x1.35)

Multithread

925

N2840
Test#1 (Integers)
4k
8.24k (x2.06)
Test#2 (FP)
6.32k
4.19k (x0.66)
Test#3 (Generic, ZIP)
2.91k
3.05k (x1.05)
Test#1 (Memory)
0.81k
1.32k (x1.63)
TOTAL
14.03k
16.79k (x1.2)

Performance/W
925
N2840
Test#1 (Integers)
42 points/W
1177 points/W
Test#2 (FP)
67 points/W
598 points/W
Test#3 (Generic, ZIP)
31 points/W
436 points/W
Test#1 (Memory)
9 points/W
188 points/W
TOTAL
148 points/W
2399 points/W

Performance/GHz
925
N2840
Test#1 (Integers)
686 points/GHz
1861 points/GHz
Test#2 (FP)
1105 points/GHz
958 points/GHz
Test#3 (Generic, ZIP)
507 points/GHz
723 points/GHz
Test#1 (Memory)
266 points/GHz
472 points/GHz
TOTAL
2565 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