hi!
This is the configuration I'm directed to:
-Utilization: 3d archtiectural visualization in 3dsmax + vray, and intensive rendering 24/7
-CPU (x2) 740.50euro
Intel Processore Xeon Quad Core 5.86GT/s MMS 1066MHz LGA1366
E5520 2.26 GHz, 8Mb Boxed no Fan 80W (BX80602E5520)
-Motherboard 458.33euro
Intel Workstation Shady Cove S5520SC Intel Xeon® 5500
Audio, 2Lan1Gb, 6SATA(RAID(0/1), 2 PCIe X16, 12x DDR3 (S5520SC)
-RAM (x2, 16gb total) 595.94euro
Kingston DIMM DDR3 ECC 1333MHz (Intel)
8Gb (2x4Gb) 1333 Ecc Reg Cl9, x4 w/TS (KVR1333D3D4R9SK2/8GI)
-Video Card 448.36euro
PNY NVIDIA Quadro FX 1800 PCIe x16 2.0
Retail 768Mb GDDR3 192bit, 2x Display Port + 1x DVI-I (DL) (VCQFX1800-PCIE-PB)
-Hard Disk 44.16euro
Hard Disk Seagate SATA 3 Gb/s 320Gb, 3.5"
Barracuda 7200.12, 320GB 7200rpm 16Mb (ST3320418AS)
-Floppy Disk 5.26euro
Floppy Disk Drive Sony 3.5" 1.44Mb
Pearl White, Oem 1.44Mb (MPF920-Z/131)
-CD/DVD 20.64euro
Sony NEC Optiarc Dvd-RW SATA Ad-5240s-0s Silver
+24x8x12x -24x6x12x, Bulk (AD-5240S-0S)
I'm doubtful about Case and PSU
Till now I've used the Stacker by Coolermaster
-Case 185.18euro
Case Tower Cooler Master Stacker 831
Black 831 Special Edition (RC-831-KKN2-GP)
I'd like to try a new one; if someone of you can advice me a full tower
with good air flux on the same price more or less, accordly with your
experience.
Other available models on the shop I'm referring to are: Aerocool, Coolermaster, Enermax and Silverstone.
-PSU
About PSU I've no idea
this models available on the shop: Antec, Be Quiet, Coolermaster,
Corsair, Enermax, Nesteq, Nox, Seasonic, Silverstone, Yang-TI, Zalman.
Too much choice for me. Till now I've had experience just with Enermax
and Coolermaster, and I have had no problem; anyway I'd like an advice.
Take in consideration that I'd like to make a machine that could
"survive" for a long time 
.
Just 2 question now please that could help me to better understand hardware configuration:
1) Xeon E5520 has a FSB clock of 1033Mhz while Kingston ram I've
choosen is 1333Mhz. This difference could make the ram utilization not
complete? So have I to buy a ram with a FSB clock of 1066Mhz like the
CPU?
2)My little renderfarm is composed by 3 PCs with this configuration:
Xeon E5410, S5000XVN motherboard, 8gb of RAM..
Could the hardware difference with the new machine I'd like to do
create some problems during distribute rendering with 3dsmax + Vray?
That's all, I thank you very much in advance for any kind of help.
Bye!