The nVIDIA Blobby benchmark would not run with the GeForce 7800GTX videocards, it would crash every time the benchmark was started. The Streams memory bandwidth test was not affected by a 64-bit environment, and since the benchmark is not multithreaded it did not show any difference from previous hardware. RSA Cryptography numbers were also very close because the benchmark is not multithreaded.

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
Processor	Seconds	Ranking
Intel Pentium D 840 (WinXP 32/32 Bit)	10.47
Intel Pentium D 840 (WinXP 32/64 Bit)	10.47
Intel Pentium D 840 (WinXP 64/64 Bit)	6.25
AMD Athlon64 FX-60 (WinXP 32/32 Bit)	7.64
AMD Athlon64 FX-60 (WinXP 32/64 Bit)	7.62
AMD Athlon64 FX-60 (WinXP 64/64 Bit)	3.31

The Mini-GZIP program is not multithreaded but both Intel and AMD platforms benefit from a true 64-bit version.

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
Processor:	Seconds	Ranking
Intel Pentium D 840 (WinXP 32/32 Bit)	12.435
Intel Pentium D 840 (WinXP 32/64 Bit)	12.435
Intel Pentium D 840 (WinXP 64/64 Bit)	10.42
AMD Athlon64 FX-60 (WinXP 32/32 Bit)	9.571
AMD Athlon64 FX-60 (WinXP 32/64 Bit)	9.565
AMD Athlon64 FX-60 (WinXP 64/64 Bit)	6.958

When the 32-bit version of the DivX benchmark is running on the Athlon64 FX-60, the FX-60 still outperforms the Intel Pentium D 840 when running the 64-bit version of the benchmark.