I followed that link and instruction. Also there is another instruction by akimoa http://osx86.co/f57/amd-and-legacy-t7263/

I ran those in terminal but had a problem on last command "update_dyld_shared_cache" as it kept saying command not found.

but reboot anyway hoping it would work but didn't do it.

Then I ran update_dyld_shared_cache again in terminal it looked it went thro, reboot with hope.....

Still didn't work.

Then I updated with nawcom's legacy kernel 10.8 with support 64bit option checked, pointed my kernel to legacy_kernelm reboot......

Voila! I got all my 32bit app running in 64bit userland. Got my 8GB RAM fully recognized!

Try that.