Below is the sample results, the bug only happen to x86 vesion, whereas x64 version is accurate:
CPU: Intel Core i7-870 (Lynnfield, B1)
2933 MHz (22.00x133.3) @ 1198 MHz (9.00x133.2)
Motherboard: ASUS P7P55D-E PRO
BIOS: 1703, 06/26/12
Chipset: ...
HWiNFO32 Portable - when created the Summary Report, the total RAM capacity shows incorrect figure. However the individual RAM module(s) showing accurate capacity.