Originally Posted by
Itsredd
I'm going to go with Croatia, considering the currency listed is the Croatian Kuna.
Edit.
Currency converted using xe.com. (1 kn = 0.175946 USD || 1kn = 0.131828 EUR)
XFX AMD RADEON HD 7970 Ghz DD Tahiti XT2 3.499,00 kn 1050 Mhz 3 gb - 461.11 EUR - 616.74 USD
Gainward GeForce GTX 680 Phantom 4gb 4.899,00 kn 1006 / 1058 Mhz 4 gb - 645.62 EUR - 863.50 USD
GAINWARD GeForce GTX 680 Phantom 3.799,00 kn 1084 / 1150 Mhz 2 gb - 500.66 EUR - 669.30 USD
Asus GTX680-DC2O-2GD5 4.233,41 kn 1019 / 1084 Mhz 2 gb - 557.82 EUR - 745.76 USD
Palit GTX680 2GB JETSTREAM 3.822,51 kn 1084 / 1150 Mhz 2 gb - 503.61 EUR - 673.12 USD
MSI GF GTX 680 Lightning 3.973,02 kn 1100 Mhz/ 1176 2 gb - 523.51 EUR - 699.80 USD
AMD RADEON HD 7970 Black Edition 1000M 3.199,00 kn 1000 Mhz 3 gb - 421.52 EUR - 563.42 USD
MSI HD7970 Lightning BE 3.764,00 kn 1070 MHz 3 gb - 496.05 EUR - 662.93 USD
GTX670 2GB JETSTREAM 2.721,00 kn 1084 mhz 2 gb - 358.59 EUR - 479.23 USD
HD7950 OC Twin Frozr 3 2.424,00 kn 880 Mhz 3 gb - 319.57 EUR - 426.49 USD
Someone with more knowledge about graphic cards than me should be able to pick the best price vs performance card in that list, based on the added EU and USA prices. Ofcourse also taking your requirements into account.