Where from here (A server upgrade query)?

[محروم.كوم]

Quote:
last pid: 97799; load averages: 8.97, 8.03, 7.24 up 17+1128 0628

562 processes: 11 running, 546 sleeping, 5 zombie
CPU states: 81.5% user, 5.4% nice, 11.5% system, 1.6% interrupt, 0.0% idle
Mem: 2330M Active, 4499M Inact, 459M Wired, 391M Cache, 214M Buf, 44M Free
Swap: 2048M Total, 744K Used, 2047M Free
Seconds to delay: 9779881
Site : www.Team-BHP.com
Server Specs : Core 2 Quad Q6600 (2.4Ghz) + 8 GB RAM + Single 7,500 rpm hard disk. Detailed specs : at this link
Posts : 1.2 Million
Users online : About 4,000 (60 minute timeout)

My server is already optimised (Thanks Eva2000!).

1. What's the best way forward? Some have advised that two servers (one for database, other as webserver) is the way to go.

2. Should I go in for two QS-5 servers, or one QS-5 + 1 QS-4 / QS-3?

Anything I'm missing here? I'm not really familiar with splitting servers, anything in particular I should look out for?

Thanks much in advance __DEFINE_LIKE_SHARE__