Two Servers Configuration

[mat_]

Maybe I have to switch to two-servers configuration (www and sql) but firstly I would like your opinion from experienced administrators.
For 800-900 users online (5mins).
What servers specification are needed?

Thanks

[rct2·com]

It would help if you told us your current spec, the operating system, what else is running on your site, and the server load stats.

[mat_]

Here is my specs:
Processor: Dual Xeon E5420 Quad Core
Memory: 6GB DDR2 PC5300
Hd1: Dual 73GB SCSI / Hardware Raid 1 15,000 RPM

[bfarber]

With 900 people online at a time, you are probably reaching the point where you need two servers. This is all variable, depending on what is most used on your site and what your members do there, but with this many members you probably have a lot of posts, and once people start heavily browsing and searching and stuff, having everything on one box can drag down a little.

[crafty55]

Use the server with less ram but beefy cpu for httpd w/fastcgi php

Use the other box for MySQLD (Compile it yourself, and try to get two drives, setup innodb)