| | | | | | |

Core 2 Duo E6550 vs Pentium D 925


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

Using the multithread performance as a reference, the E6550 gets a score of 16.4 k points while the 925 gets 14 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
6fb
f65
Core
Conroe
Presler
Architecture
Base frecuency
2.333 GHz
3 GHz
Socket
LGA 775
LGA 775
Cores/Threads
2/2
2/2
TDP
65 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
16+8 kB
Cache L2
4096 kB
4096 kB
Date
July 2007
October 2006
Mean monothread perf.
10.31k points
7.7k points
Mean multithread perf.
16.38k points
14.03k points

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
E6550
925
Test#1 (Integers)
2.34k
1.52k (x0.65)
Test#2 (FP)
2.34k
2.95k (x1.26)
Test#3 (Generic, ZIP)
2.35k
1.51k (x0.64)
Test#1 (Memory)
2.72k
0.82k (x0.3)
TOTAL
9.75k
6.79k (x0.7)

Multithread

E6550

925
Test#1 (Integers)
4.67k
2.98k (x0.64)
Test#2 (FP)
4.68k
5.62k (x1.2)
Test#3 (Generic, ZIP)
4.71k
2.87k (x0.61)
Test#1 (Memory)
1.26k
0.82k (x0.65)
TOTAL
15.32k
12.29k (x0.8)

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
E6550
925
Test#1 (Integers)
2.7k
2.06k (x0.76)
Test#2 (FP)
2.43k
3.32k (x1.37)
Test#3 (Generic, ZIP)
2.44k
1.52k (x0.62)
Test#1 (Memory)
2.74k
0.8k (x0.29)
TOTAL
10.31k
7.7k (x0.75)

Multithread

E6550

925
Test#1 (Integers)
5.39k
4k (x0.74)
Test#2 (FP)
4.85k
6.32k (x1.3)
Test#3 (Generic, ZIP)
4.89k
2.91k (x0.59)
Test#1 (Memory)
1.26k
0.81k (x0.64)
TOTAL
16.38k
14.03k (x0.86)

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

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