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Pentium D 925 vs Core 2 Duo P8400


Description
The 925 is based on NetBurst architecture while the P8400 is based on Core.

Using the multithread performance as a reference, the 925 gets a score of 14 k points while the P8400 gets 21 k points.

Summarizing, the P8400 is 1.5 times faster than the 925. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
f65
10676
Core
Presler
Peryn-3M
Architecture
Base frecuency
3 GHz
2.267 GHz
Socket
LGA 775
Socket P
Cores/Threads
2/2
2/2
TDP
95 W
25 W
Cache L1 (d+i)
16+8 kB
2x32 kB
Cache L2
4096 kB
3072 kB
Date
October 2006
July 2008

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
925
P8400
Test#1 (Integers)
1521
1779 (16.98%)
Test#2 (FP)
2948
4949 (67.85%)
Test#3 (Generic, ZIP)
1506
2078 (38.00%)
Test#1 (Memory)
816
1438 (76.15%)
TOTAL
6791
10244 (50.84%)

Multithread

925

P8400
Test#1 (Integers)
2982
3527 (18.30%)
Test#2 (FP)
5616
9750 (73.61%)
Test#3 (Generic, ZIP)
2870
4071 (41.84%)
Test#1 (Memory)
819
1439 (75.72%)
TOTAL
12287
18787 (52.91%)

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
P8400
Test#1 (Integers)
2059
2428 (17.92%)
Test#2 (FP)
3316
5402 (62.92%)
Test#3 (Generic, ZIP)
1522
2128 (39.79%)
Test#1 (Memory)
799
1426 (78.43%)
TOTAL
7696
11384 (47.92%)

Multithread

925

P8400
Test#1 (Integers)
3995
4813 (20.48%)
Test#2 (FP)
6318
10581 (67.47%)
Test#3 (Generic, ZIP)
2905
4176 (43.73%)
Test#1 (Memory)
808
1449 (79.26%)
TOTAL
14027
21019 (49.84%)

Performance/W
925
P8400
Test#1 (Integers)
42 points/W
193 points/W
Test#2 (FP)
67 points/W
423 points/W
Test#3 (Generic, ZIP)
31 points/W
167 points/W
Test#1 (Memory)
9 points/W
58 points/W
TOTAL
148 points/W
841 points/W

Performance/GHz
925
P8400
Test#1 (Integers)
686 points/GHz
1071 points/GHz
Test#2 (FP)
1105 points/GHz
2383 points/GHz
Test#3 (Generic, ZIP)
507 points/GHz
938 points/GHz
Test#1 (Memory)
266 points/GHz
629 points/GHz
TOTAL
2565 points/GHz
5022 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. 3.7.8