After building my frist two rigs, i finally gave up to try to make them working with 6 GPUs, as described here:
https://bitcointalk.org/index.php?topic=474794.msg5325530#msg5325530 so I left up with 2 GPUs, one if which is already sold.
So I WTS:
1x Gigabyte R9 270 (not 270X!), giving me 465-470 khs under windows 8.1 64 bit, purchased 10 days ago. Price: 140 EUR. [SOLD !] 1 x RAM 4GB DDR Kingston, unopened. Price: 32 EUR.Prefer buyers from EU as I will ship from Bulgaria which is also part of EU and will be easier with customs and similar stuff.