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Pentium D 925 vs 820


Description
Both models 925 and 820 are based on NetBurst architecture.



Using the multithread performance as a reference, the 925 gets a score of 14 k points while the 820 gets 14.1 k points.

Summarizing, the 820 is 1 times faster than the 925. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
f65
f44
Core
Presler
Smithfield
Architecture
Base frecuency
3 GHz
2.8 GHz
Socket
LGA 775
LGA 775
Cores/Threads
2/2
2/2
TDP
95 W
130 W
Cache L1 (d+i)
16+8 kB
16+8 kB
Cache L2
4096 kB
2048 kB
Date
October 2006
May 2005

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
820
Test#1 (Integers)
1521
1459 (-4.07%)
Test#2 (FP)
2948
2598 (-11.87%)
Test#3 (Generic, ZIP)
1506
1264 (-16.05%)
Test#1 (Memory)
816
911 (11.61%)
TOTAL
6791
6232 (-8.23%)

Multithread

925

820
Test#1 (Integers)
2982
2925 (-1.90%)
Test#2 (FP)
5616
5192 (-7.55%)
Test#3 (Generic, ZIP)
2870
2526 (-12.00%)
Test#1 (Memory)
819
942 (15.12%)
TOTAL
12287
11585 (-5.71%)

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
820
Test#1 (Integers)
2059
1932 (-6.18%)
Test#2 (FP)
3316
3114 (-6.09%)
Test#3 (Generic, ZIP)
1522
1495 (-1.78%)
Test#1 (Memory)
799
907 (13.45%)
TOTAL
7696
7447 (-3.23%)

Multithread

925

820
Test#1 (Integers)
3995
3921 (-1.87%)
Test#2 (FP)
6318
6227 (-1.44%)
Test#3 (Generic, ZIP)
2905
2989 (2.89%)
Test#1 (Memory)
808
937 (15.96%)
TOTAL
14027
14074 (0.34%)

Performance/W
925
820
Test#1 (Integers)
42 points/W
30 points/W
Test#2 (FP)
67 points/W
48 points/W
Test#3 (Generic, ZIP)
31 points/W
23 points/W
Test#1 (Memory)
9 points/W
7 points/W
TOTAL
148 points/W
108 points/W

Performance/GHz
925
820
Test#1 (Integers)
686 points/GHz
690 points/GHz
Test#2 (FP)
1105 points/GHz
1112 points/GHz
Test#3 (Generic, ZIP)
507 points/GHz
534 points/GHz
Test#1 (Memory)
266 points/GHz
324 points/GHz
TOTAL
2565 points/GHz
2660 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