Originally Posted by BirdOPrey5
Even with the 4GB of RAM you're only going to really see 3.something GB... usually between 3.1 and 3.5 depending on how big your video card is... While this doesn't answer your question the last GB (upgrading from a 1GB to 2GB chip) doesn't provide the full affect anyway.
The rest of the story:
The Toshi came stock with 2g.
While I had my little Acer 'One' netbook disassembled to try a different HDD, I swapped it's 512 card for a 1g out of the Toshi.
(FWIW, you have to completely dissassemble the 'One' down to taking the MB out of the case to swap memory
It worked, so I left it in.
So Toshi ended up with 1.5g.
1.5g + Vista = the suck
I bought a 2g card (to replace the temporarily swapped in 512), so Toshi would = 3g
(I wasn't trying for 4g, the other 2g is for a buddy's computer.)
Toshi didn't 'like' the 2g Memory
2g does work in GF's lappy, so the memory is good, Toshi just doesn't like it.