On 07/22/2010 02:39 PM Hakan Koseoglu wrote: > JD, > On 22/07/10 10:25, John Doe wrote: >> I was wondering if anyone would know the cons of running a PAE kernel...? >> I have a 4GB pc and was wondering if it was worth going the PAE way to gain >> those exta 700MB... > You should use 64 bit if possible but if you're seeing 3.2GB, it's more > likely that your motherboard is not capable (I have one of those here > right now). > >> In the past, I heard that these 700MB were normally reserved for bios or chipset >> stuff... > It still is, even with with 64 bit. If your motherboard supports > remapping this memory with 64 bit you can use the whole 4GB. Otherwise > you're limited to 3.2: > > hakan at photon:~$ free -m > total used free shared buffers cached > Mem: 3262 1972 1290 0 103 737 > -/+ buffers/cache: 1131 2131 > Swap: 7812 308 7504 > hakan at photon:~$ arch > x86_64 I'm trying to catch up... Is the 737M cached (in the output above) what is reserved for bios or chipset...? and what is gained back through remapping? tnx