Intel D 840 Dual Core CPU
4. PCMark04
PCMark04 is an application-based benchmark and a premium tool for measuring overall PC performance. It uses portions of real applications instead of including very large applications or using specifically created code. This allows PCMark04 to be a smaller installation as well as to report very accurate results. As far as possible, PCMark04 uses public domain applications whose source code can be freely examined by any user.
PCMark04 includes 4 categorized suites for benchmarking your computer. These include CPU, Graphics, Memory and a Hard Disk Drive benchmark. In our case we select only the CPU test suite.
The Dual-Core processor produced a very high score in the PCMark04 benchmark. This test includes multitasking, something we knew from the start was going to be a strong point for the Dual-Core CPU.
More analytically:
| Intel P4 3.73Ghz | Intel P4 660 | Intel P4 D 840 | |
| File Compression (MB/sec) | 5.4 | 5.3 | 3.8 |
| File Encryption (MB/sec) | 70.5 | 65.6 | 57.4 |
| File Decompression (MB/sec) | 45.2 | 42.9 | 64.4 |
| Image Processing (MPixels/sec) | 18.5 | 16.9 | 27.5 |
| Grammar Check (KB/sec) | 3.0 | 2.4 | 4.7 |
| File Decryption (MB/sec) | 107.5 | 102.3 | 91.9 |
| Audio Conversion (KB/sec) | 2921.7 | 2779.1 | 2507.3 |
| WMV Video Compression (FPS) | 64.1 | 59.7 | 74.4 |
| DivX Video Compression (FPS) | 88.4 | 77.6 | 87.1 |
With some tests, the D 840 is slower than the 3.73GHz ED or even the P4 660 3.6GHz. This is logical since the D 840 runs at 3.2GHz, so for single process applications the D 840 is no different to a single core CPU. When there are multiple processes, then the D 840 is faster.
