How many slots [CSS]

[yodag566]

Hwo many css server slots would this server could run? And prefer linux or windows?
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Processors 1 x Intel Xeon E5620
- Caches 12 MB
- Cores / Threads 4 / 8
- Features VT-x, Turbo Boost, HT
Memory 8 GB DDR3
- Type 1066 Reg. ECC
Drives 2
- Hard Disks 2 x 146 GB SAS II, 10,000rpm
- RAID 0 / 1
IP addresses 1 b
Network 3 NICs
- Internet 1 Gbit/s
- myPrivateNetwork 1 Gbit/s
- KVM over IP 100 Mbit/s
- iSCSI Storage Yes d
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[PAL-18]

How many Ghz is your CPU?