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Intel Pentium D 840 Dual-Core LGA775 Processor Review
Intel Pentium D 840 Dual-Core LGA775 Processor Review - PCSTATS
This 90nm processor uses a pair of Prescott cores running at 3.2GHz to bring multi-processing to the desktop in a LGA775 pinless package.
 79% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: Intel Aug 17 2005   M. Dowler  
Home > Reviews > CPU / Processors > Intel Pentium D 840

Benchmarks: SuperPI, Hexus piFast

Super Pi Source: SuperPI

SuperPI calculates the number PI to 1 Million digits in this raw number crunching benchmark. The benchmark is fairly diverse and allows the user to change the number of digits of PI that can be calculated from 16 Thousand to 32 Million. The benchmark, which uses 19 iterations in the test, is set 1 Million digits.

Lower numbers denote faster calculation times (seconds), and hence better performance.

SuperPi Benchmark Results
1 Million Digits: seconds Ranking
Pentium 4 540 41
Athlon64 3800+ 36
Athlon64 4000+ 35
Athlon64 X2 4800+ 35
Athlon64 X2 4800+ 64-bit 35
Pentium D 840 39
Pentium D 840 (4.02GHz) 32
Pentium D 840 64-bit 40

Super PI apparently cares little for 64-bit operation or dual-core processors. It's a pure number crunching benchmark and the Intel Pentium D 840 holds its own well. At stock, the Intel dual-core CPU bests its single-core sibling, and when overclocked it leads the field in this demanding test.

Hexus piFast Source: Hexus

Pifast is a small program that computes Pi to a set amount of decimal places and also displays how long the calculation takes. This then gives us a basis for charting the results.

Results are in seconds; lower results are better.

Hexus piFast Benchmark Results
Hexus piFast: seconds Ranking
Pentium 4 540 64
Athlon64 3800+ 50.5
Athlon64 4000+ 50.69
Athlon64 X2 4800+ 49.98
Athlon64 X2 4800+ 64-bit 49.97
Pentium D 840 66.31
Pentium D 840 (4.02GHz) 54.73
Pentium D 840 64-bit 66.31

In the second of our number-crunching tests, the Intel Pentium D 840 fares less well. It fails to supercede its single-core cousin at stock speeds, and falls behind the various AMD processors by five seconds even when overclocked. Again, this benchmark seems ignorant of the benefits of dual-core and 64-bit operations.

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Contents of Article: Intel Pentium D 840
 Pg 1.  Intel Pentium D 840 Dual-Core LGA775 Processor Review
 Pg 2.  State of the art CPU
 Pg 3.  Intel's Dual Core Technology
 Pg 4.  Intel 955X Express Chipset
 Pg 5.  Intel 945P/G chipset
 Pg 6.  Intel E7230 Server Core Logic
 Pg 7.  Pinless LGA775 Package
 Pg 8.  Overclocking Intel's new dual-core processor
 Pg 9.  Benchmarks: SysMark 2004
 Pg 10.  Benchmarks: Winstone 2004, Cinebench 2003
 Pg 11.  Benchmarks: Cinebench 2003 64-bit, Maya
 Pg 12.  Benchmarks: ScienceMark 2.0 in 32-bit and 64-bit
 Pg 13.  — Benchmarks: SuperPI, Hexus piFast
 Pg 14.  Benchmarks: Sandra 2005, POVray
 Pg 15.  Benchmarks: PCMark04, PCMark05
 Pg 16.  Benchmarks: 3DMark2001, 3DMark05
 Pg 17.  Benchmarks: Comanche 4, UT2003
 Pg 18.  Benchmarks: UT2004, Doom3
 Pg 19.  Intel's dual-core Workhorse

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