I made some tests with EHQ. Quality is deffinitly better. Image is sharper and low-bitrate encodes really needs it.
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But... 4 hours is SO long!!! Would be great to optimize the encoder for 3DNOW!/3DNOW!+.
3DNow!+ : Enhanced 3DNow!
Technology from AMD.
The enhanced 3DNow! technology implemented in the AMD Athlon takes 3D multimedia performance to new heights and builds on the 21 instructions of AMD's original 3DNow! technology - the first x86 instruction set to use superscalar SIMD floating-point techniques. Enhanced 3DNow! adds 24 new instructions - 19 to improve MMX™ integer math calculations and enhance data movement for Internet streaming applications and 5 DSP extensions for soft modem, soft ADSL, Dolby Digital, and MP3 applications. This new DSP functionality of the AMD Athlon is not supported by the Pentium III.
3DNow!+ capable CPU
AMD :
Athlon
Duron