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AMD Athlon64 - 64-bit vs. 32-bit Head On Comparison

AMD Athlon64 - 64-bit vs. 32-bit Head On Comparison - PCSTATS
Price Check: $/£/€
Abstract: What does 64-bit, specifically the 64-bit support built into AMD's Athlon 64 and AthlonFX processors, have to offer the gamer and enthusiast markets?
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: AMD Oct 18 2004   Mike Dowler  
Home > Reviews > CPU / Processors > AMD Athlon64

64-bit Benchmarks: nvidia, mini-gzip, DivX

PCStats Test System Specs:
Processor:

Athlon64 3800+

Clock Speed: 12 x 200 MHz = 2.4 GHz
Motherboards:

MSI K8T-Neo2 FIR, K8T800 Pro

Videocard:

Gigabyte GeForce 5950 Ultra

Memory:

2x 512MB Corsair TwinX3200XL PRO

Hard Drive: 80GB Seagate SATA HDD
CDROM: MSI X48 CD-RW/DVD-ROM
PowerSupply: Vantec Stealth 470W
Software Setup

WindowsXP Build 2600
VIA 4in1 4.53
Forceware 61.77
WindowsXP 64Bit Beta
VIA 4in1 0.99 Beta
Forceware 61.76 Beta

Benchmarks

nVIDIA Blobby Dancer
mini-gzip
DiVX
Streams
RSACryptography

 

nVIDIA Blobby Dancer Source: nVIDIA

The Blobby Dancer benchmark contains both a 32-bit and a 64-bit benchmark that measures the performance differences between 32bit and 64bit. The benchmark has been optimized for AMD Athlon64 and AMD Athlon64 FX systems (both 32-bit and 64-bit).

nVIDIA Blobby Dancer
Operating System FPS Ranking
WindowsXP Pro w/SP1 (32-bit Mode) 32.71
WindowsXP 64 (32-bit Mode) 32.14
WindowsXP 64 (64-bit Mode) 41.75

The first of our benchmarks shows how much math-intensive operations like 3D graphics can benefit from the extra registers and headroom the Athlon 64 processor provides in 64-bit mode. Running in 64-bit mode, the Athlon 64 manages almost a 25% performance improvement over the same benchmark run in 32-bit. Unsurprisingly, The 64-bit version of Windows XP running in 32-bit compatibility mode lags behind its optimized, true 32-bit cousin just slightly.

Mini-GZIP Source: zlib

The Mini-GZIP benchmark contains both 64-bit benchmark that measures the performance of an AMD64 optimized version of ZLIB. It also contains a 32-bit benchmark implemented with the standard (unmodified) ZLIB. Lower is better.

Mini-GZIP
Operating System Seconds Ranking
WindowsXP Pro w/SP1 (32-bit Mode) 7.73
WindowsXP 64 (32-bit Mode) 7.718
WindowsXP 64 (64-bit Mode) 3.421

Again, both 32-bit and 64-bit versions of WindowsXP, using the 32-bit GZIP executable file turned in comparable figures. As for the 64-bit benchmark....wow! It's hard to believe this is the same processor!? Optimizing the same program for 64-bit operation has brought more than double the performance in this compression algorithm test. Those 8 extra registers kicked in again.

DiVX Encoding Source: PCStats

The DivX encoder benchmark contains both a 32-bit and a 64-bit benchmark that measures the performance of raw video encoding of the AMD optimized DivX video encoder version 503. The encoder has been optimized for AMD Athlon 64 and AMD Athlon 64 FX systems (both 32-bit and 64-bit). Lower is better.

DiVX Encoding
Operating System Seconds Ranking
WindowsXP Pro w/SP1 (32 bit Mode) 10.394
WindowsXP 64 (32 bit Mode) 10.413
WindowsXP 64 (64 bit Mode) 8.502

A decent, almost 20% boost here for the 64-bit version of the Div-X encoder. Another mathematically intensive operation that benefits from the extra registers and headroom of 64-bit mode. DivX compresses video and audio data and is based on the MPEG-4 compression standard.

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Contents of Article: AMD Athlon64
 Pg 1.  AMD Athlon64 - 64-bit vs. 32-bit Head On Comparison
 Pg 2.  AMD64 and 64-bit Operations
 Pg 3.  No Mess Solution for 64-bit
 Pg 4.  AMD's Second Major Innovation
 Pg 5.  64-bit Extra Registers
 Pg 6.  — 64-bit Benchmarks: nvidia, mini-gzip, DivX
 Pg 7.  64-bit Benchmarks: Streams
 Pg 8.  64-bit Benchmarks: RSA Cyrptography
 Pg 9.  From 32-to-64-bit Conclusions

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