Hello everyone!!!<br><br>May be somebody can shed some light here... I&#39;m building a server here with 4GB of RAM memory. The fact is, if I boot with mem=3072M everything goes as fast as it should but I&#39;m not using 1GB of memory. If I don&#39;t put the mem option, Linux will see 4GB of memory available but it will be damn slow (really). 
<br><br>To make Linux recognize 4 gigs of memory I had to activate HIGHMEM=64GB, otherwise it only recognizes 3279MB (but it is fast).<br><br>My processor is a Intel Core 2 Duo E6320 (1.86Ghz). The motherboard is Intel. I&#39;m running Gentoo at 32bits mode and the kernel version is 
2.6.20-gentoo-r8.<br><br>Any lights would be very appreciated.<br><br>Best regards,<br>Daniel Colchete<br>