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Pentium D 820


Description
The Pentium D 820 is a cpu manufactured by Intel that was released on May 2005. This model has 2 Smithfield cores , runs at 2800 MHz as base frequency and has a a thermal design power of 130 W.

The 820 has 16+8 kB of cache L1, 2048 kB of cache L2 and 0 kB of cache L3.

Specs
Official name
Intel(R) Pentium(R) D CPU 2.80GHz
CPUID
f44
Core
Smithfield
Architecture
Base frecuency
2.8 GHz
Boost frecuency
2.8 GHz
Socket
LGA 775
Cores/Threads
2/2
TDP
130 W
Cache L1 (d+i)
16+8 kB
Cache L2
2048 kB
Cache L3
0 kB
Release date
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
Multithread
Test#1 (Integers)
1459
2925 (x2.0)
Test#2 (FP)
2598
5192 (x2.0)
Test#3 (Generic, ZIP)
1264
2526 (x2.0)
Test#1 (Memory)
911
942 (x1.0)
TOTAL
6232
11585 (x1.9)

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
Multithread
Test#1 (Integers)
1932
3921 (x2.0)
Test#2 (FP)
3114
6227 (x2.0)
Test#3 (Generic, ZIP)
1495
2989 (x2.0)
Test#1 (Memory)
907
937 (x1.0)
TOTAL
7447
14074 (x1.9)

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) [% vs time]

grafica bm.hardlimit.com


Test#2 (FP) [% vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [% vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [% 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) [% vs time]

grafica bm.hardlimit.coma


Test#2 (FP) [% vs time]

grafica bm.hardlimit.coma


Test#3 (Generic, ZIP) [% vs time]

grafica bm.hardlimit.coma


Test#1 (Memory) [% vs time]

grafica bm.hardlimit.coma

Similar CPUs to Pentium D 820
Intel Pentium D 820 (This model)
 Mode FPU monothread  [6232 points]
 Mode FPU multithread  [11585 points]
 Mode SSE monothread  [7447 points]
 Mode SSE multithread  [14074 points]
 Mode FPU monothread  [6217 points -0.25%]
 Mode FPU multithread  [6623 points -42.84%]
 Mode SSE monothread  [7482 points +0.46%]
 Mode SSE multithread  [8425 points -40.14%]
 Mode FPU monothread  [6791 points +8.97%]
 Mode FPU multithread  [12287 points +6.05%]
 Mode SSE monothread  [7696 points +3.34%]
 Mode SSE multithread  [14027 points -0.33%]
 Mode FPU monothread  [6195 points -0.60%]
 Mode FPU multithread  [6545 points -43.51%]
 Mode SSE monothread  [7457 points +0.13%]
 Mode SSE multithread  [8625 points -38.72%]
 Mode FPU monothread  [5617 points -9.87%]
 Mode FPU multithread  [9281 points -19.89%]
 Mode SSE monothread  [6485 points -12.92%]
 Mode SSE multithread  [11367 points -19.24%]
 Mode FPU monothread  [6363 points +2.10%]
 Mode FPU multithread  [0 points -100.00%]
 Mode SSE monothread  [7454 points +0.08%]
 Mode SSE multithread  [0 points -100.00%]
 Mode FPU monothread  [5904 points -5.26%]
 Mode FPU multithread  [0 points -100.00%]
 Mode SSE monothread  [7155 points -3.93%]
 Mode SSE multithread  [0 points -100.00%]
 Mode FPU monothread  [4280 points -31.32%]
 Mode FPU multithread  [11851 points +2.29%]
 Mode SSE monothread  [6673 points -10.39%]
 Mode SSE multithread  [17990 points +27.82%]
 Mode FPU monothread  [6605 points +5.98%]
 Mode FPU multithread  [7015 points -39.45%]
 Mode SSE monothread  [7921 points +6.36%]
 Mode SSE multithread  [9135 points -35.09%]
 Mode FPU monothread  [5887 points -5.54%]
 Mode FPU multithread  [10738 points -7.31%]
 Mode SSE monothread  [6412 points -13.90%]
 Mode SSE multithread  [11806 points -16.12%]
 Mode FPU monothread  [6146 points -1.39%]
 Mode FPU multithread  [0 points -100.00%]
 Mode SSE monothread  [7475 points +0.37%]
 Mode SSE multithread  [0 points -100.00%]
          
FPU mode comparison

Monothread integers operations
Modelo
Puntuación
Intel Pentium D 820
1459
This model

Multithread integers operations
Modelo
Puntuación
Intel Pentium D 820
2925
This model
2196 [-24.93%]

Monothread floating point operations
Modelo
Puntuación
Intel Pentium D 820
2598
This model
2472 [-4.86%]

Multithread floating point operations
Modelo
Puntuación
Intel Pentium D 820
5192
This model
4367 [-15.90%]

Monothread generic test (Zip compression)
Modelo
Puntuación
Intel Pentium D 820
1264
This model

Multithread generic test (Zip compression)
Modelo
Puntuación
Intel Pentium D 820
2526
This model
2319 [-8.20%]
2184 [-13.53%]
1528 [-39.50%]

Monothread memory performance
Modelo
Puntuación
Intel Pentium D 820
911
This model

Multithread memory performance
Modelo
Puntuación
Intel Pentium D 820
942
This model
          
SSE mode comparison

Monothread integers operations
Modelo
Puntuación
Intel Pentium D 820
1932
This model
1860 [-3.75%]
1824 [-5.59%]

Multithread integers operations
Modelo
Puntuación
Intel Pentium D 820
3921
This model
3406 [-13.12%]
3159 [-19.42%]
2835 [-27.68%]

Monothread floating point operations
Modelo
Puntuación
Intel Pentium D 820
3114
This model
3069 [-1.44%]
2994 [-3.85%]

Multithread floating point operations
Modelo
Puntuación
7461 [19.82%]
Intel Pentium D 820
6227
This model
5259 [-15.55%]
4765 [-23.48%]

Monothread generic test (Zip compression)
Modelo
Puntuación
Intel Pentium D 820
1495
This model
1457 [-2.53%]

Multithread generic test (Zip compression)
Modelo
Puntuación
3351 [12.10%]
Intel Pentium D 820
2989
This model
2419 [-19.08%]
2164 [-27.60%]
2085 [-30.24%]

Monothread memory performance
Modelo
Puntuación
Intel Pentium D 820
907
This model

Multithread memory performance
Modelo
Puntuación
Intel Pentium D 820
937
This model

Hardlimit Benchmark Central - Ver. 3.7.8