Hmm, it's strange - SSE build doesn't want to run on Athlon 64 with full SSE support under 32-bit WinXP .
C:\Bin>neroAacEnc_SSE.exe
Fatal Error : This program was not built to run on the processor in your system.
Some info about processor (from CPU-Z):
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CPU-Z version 1.38
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Processors Information
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Processor 1 (ID = 0)
Number of cores 1
Number of threads 1 (max 1)
Name AMD Athlon 64 3200+
Codename Venice
Specification AMD Athlon 64 Processor 3200+
Package Socket 939
CPUID F.F.2
Extended CPUID F.2F
Brand ID 4
Core Stepping DH-E6
Technology 90 nm
Core Speed 1006.3 MHz (5.0 x 201.3 MHz)
HT Link speed 1006.3 MHz
Stock frequency 2000 MHz
Instructions sets MMX (+), 3DNow! (+), SSE, SSE2, SSE3, x86-64
L1 Data cache 64 KBytes, 2-way set associative, 64-byte line size
L1 Instruction cache 64 KBytes, 2-way set associative, 64-byte line size
L2 cache 512 KBytes, 16-way set associative, 64-byte line size
FID/VID Control yes
max FID 10.0x
VID range 1.100V - 1.450V
K8 Thermal sensor yes
K8 Revision ID 4.2
Attached device PCI device at bus 0, device 24, function 0
Attached device PCI device at bus 0, device 24, function 1
Attached device PCI device at bus 0, device 24, function 2
Attached device PCI device at bus 0, device 24, function 3
Plain version works well. Are Athlon processors unsupported by the SSE build or it's just a bug?