Hi i just make my new Daw PC and I am very very happy with, it is incredible powerful and stable yet, and the good thing it s that anybody on the budget side who has 450 Eu can afford it so i share with you my new cheap gear 
Here are the components:
CPU : CPU AMD Phenom II 955 Quad Core, Socket AM3, 6144K L3, 4X512K L2, 0.045u, 0.875-1.5V, 125W, 64bit (3200 MHz), WOF BOX, Black Edition, Quad CORE, HDZ955FBGIBOX
it is overclocked from 3,2 Ghz to 4 Ghz (easy)
MB : GIGABYTE MA785GT-UD3H
Memory: 8GB (2X DIMM 4GB DDR3 PC10600 KINGSTON (KIT X 2) KVR1333D3N9K2/4G)
HDD: 2XHDD WDigital, 1 TB, 7200rpm, 32Mb, Serial-ATA II 300, WD10EADS, Caviar Green, Perpendicular Magnetic Recording (PMR)
(one dedicated for the Operation system)
Power Suply: Rasurbo silence power 550 (very quiet i cant hear it)
Cheapest case
Graphic Card: NVIDIA Graphics PLUS, GeForce with CUDA 9500GT PCI-Express 1GB DDR2, 128bit, HDTV, Dual DVI
I have to mention that i use external RME Fireface 400 soundcard with it (The Gigabyte motherboard has Texas Instruments Chip so no problem at all)
You have to use 64 bit Operation System to recognise all the 8 Gb DDR3 memory so I use now Windows 7 64 bit version no problem with 32 bit plug ins if you use Cubase 4 32 bit, all my plugins work fine, i work in 24 bit44,1 khz.
Atention i installed my Nuendo 3 to ,but it was very slow and i realized that just one of the four cores of the CPU was in use, so i had to move on
Cubase 4, and now all my four cores are working flawlesly.

Here are the components:
CPU : CPU AMD Phenom II 955 Quad Core, Socket AM3, 6144K L3, 4X512K L2, 0.045u, 0.875-1.5V, 125W, 64bit (3200 MHz), WOF BOX, Black Edition, Quad CORE, HDZ955FBGIBOX
it is overclocked from 3,2 Ghz to 4 Ghz (easy)
MB : GIGABYTE MA785GT-UD3H
Memory: 8GB (2X DIMM 4GB DDR3 PC10600 KINGSTON (KIT X 2) KVR1333D3N9K2/4G)
HDD: 2XHDD WDigital, 1 TB, 7200rpm, 32Mb, Serial-ATA II 300, WD10EADS, Caviar Green, Perpendicular Magnetic Recording (PMR)
(one dedicated for the Operation system)
Power Suply: Rasurbo silence power 550 (very quiet i cant hear it)
Cheapest case
Graphic Card: NVIDIA Graphics PLUS, GeForce with CUDA 9500GT PCI-Express 1GB DDR2, 128bit, HDTV, Dual DVI
I have to mention that i use external RME Fireface 400 soundcard with it (The Gigabyte motherboard has Texas Instruments Chip so no problem at all)
You have to use 64 bit Operation System to recognise all the 8 Gb DDR3 memory so I use now Windows 7 64 bit version no problem with 32 bit plug ins if you use Cubase 4 32 bit, all my plugins work fine, i work in 24 bit44,1 khz.
Atention i installed my Nuendo 3 to ,but it was very slow and i realized that just one of the four cores of the CPU was in use, so i had to move on
Cubase 4, and now all my four cores are working flawlesly.