i saw someone using windows 8 and he was using 6 videocards and they were working correctly so you could try windows 8

thanks for all answers, i will spend 2500-3000$ into mining. I cant come that far with only 600$  

which ones are good for mining of these gpus


thanks btw sorry for the long post

MSI N760 TF 2GD5/OC
GeForce GTX 760
2 GB GDDR5
€ 219,99

MSI GTX 770 Gaming
GeForce GTX 770
2 GB GDDR5
€ 279,90

EVGA GeForce GTX 780 Classified
GF GTX 780
3 GB GDDR5
€ 525,05

NVIDIA Quadro K2000
Quadro K2000
2 GB GDDR5
€ 457,50

NVIDIA Quadro K600
Quadro K600
1 GB GDDR3
€ 157,39

ASUS GeForce GTX 780 DirectCU II OC
GeForce GTX 780
3 GB GDDR5
€ 441,94

Asus R7 240-2GD3-L
Radeon R7 240
2 GB DDR3
€ 69,90

Sapphire R9 270X Dual-X OC
Radeon R9 270X
2 GB GDDR5
€ 166,99

AMD FirePro V3900
FirePro V3900
1 GB DDR3
€ 105,54

AMD FirePro W7000
FirePro W7000
4 GB GDDR5
€ 802,65

Club 3D Radeon HD 7870 '13Series
Radeon HD 7870
2 GB GDDR5
€ 147,9

(demo) Sapphire HD7850 OC
Radeon HD 7850
€ 179,00

Asus HD7790-DC2OC-1GD
Radeon HD 7790
1 GB GDDR5
€ 109,94

Matrox M9120
M9120
512 MB DDR2
€ 235,65

P690 PCIe x16
MGA P690
128 MB DDR2
€ 150,15

Hello im new on "Bitcointalk" i am not new to cryptocurrencies, im thinking of investing money (500/600$) into mining but im not sure. Would i buy "Asic Miners" or just make a whole new pc and mine using "Gpu", would it matter what coin i mine? What would a cheap setup cost for a GPU miner.

thanks