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Pentium D 925 vs Core 2 Duo E6550


Description
The 925 is based on NetBurst architecture while the E6550 is based on Core.

Using the multithread performance as a reference, the 925 gets a score of 14 k points while the E6550 gets 16.4 k points.

Summarizing, the E6550 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
6fb
Core
Presler
Conroe
Architecture
Base frecuency
3 GHz
2.333 GHz
Socket
LGA 775
LGA 775
Cores/Threads
2/2
2/2
TDP
95 W
65 W
Cache L1 (d+i)
16+8 kB
32+32 kB
Cache L2
4096 kB
4096 kB
Date
October 2006
July 2007

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
E6550
Test#1 (Integers)
1521
2340 (53.82%)
Test#2 (FP)
2948
2342 (-20.58%)
Test#3 (Generic, ZIP)
1506
2346 (55.84%)
Test#1 (Memory)
816
2722 (233.44%)
TOTAL
6791
9749 (43.56%)

Multithread

925

E6550
Test#1 (Integers)
2982
4674 (56.74%)
Test#2 (FP)
5616
4678 (-16.71%)
Test#3 (Generic, ZIP)
2870
4707 (64.00%)
Test#1 (Memory)
819
1260 (53.93%)
TOTAL
12287
15318 (24.67%)

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
E6550
Test#1 (Integers)
2059
2697 (30.98%)
Test#2 (FP)
3316
2429 (-26.76%)
Test#3 (Generic, ZIP)
1522
2443 (60.51%)
Test#1 (Memory)
799
2737 (242.42%)
TOTAL
7696
10305 (33.90%)

Multithread

925

E6550
Test#1 (Integers)
3995
5390 (34.91%)
Test#2 (FP)
6318
4847 (-23.29%)
Test#3 (Generic, ZIP)
2905
4892 (68.36%)
Test#1 (Memory)
808
1256 (55.46%)
TOTAL
14027
16385 (16.81%)

Performance/W
925
E6550
Test#1 (Integers)
42 points/W
83 points/W
Test#2 (FP)
67 points/W
75 points/W
Test#3 (Generic, ZIP)
31 points/W
75 points/W
Test#1 (Memory)
9 points/W
19 points/W
TOTAL
148 points/W
252 points/W

Performance/GHz
925
E6550
Test#1 (Integers)
686 points/GHz
1156 points/GHz
Test#2 (FP)
1105 points/GHz
1041 points/GHz
Test#3 (Generic, ZIP)
507 points/GHz
1047 points/GHz
Test#1 (Memory)
266 points/GHz
1173 points/GHz
TOTAL
2565 points/GHz
4417 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