thanks to all for replies.

What if i can check videocard before buying? For example start miner on each of XFX board. It is safe to buy it if hashrate will be ok?

thx for advice.
Which brand is better for videocard?
Asus, GIGABYTE, Sapphire, MSI, PowerColor ?

Hello to everyone. Want to mine litecoin and altcoins so need your advice.

We are planning to buy 10 videocards XFX Radeon R9 280X (per 5 in each motherboard). So we think about motherboard, ram and power.

Moherboard.
It is important how fast pci-e slots are in motherboard? For example "GIGABYTE GA-990FXA-UD5" have this:
2 slots x16
2 slots x4
1 slot x8

RAM.
Think about 2x4GB in each monerboard. It is important how fast memory working?

POWER SUPPLY.
Most difficult question. Which PSU need for 5 videocards? It is posssible to use 2 or 3 800watt PSU's  for each motherboard?

VIDEOCARDS.
Each card must be alone or it will be better to make crossfire?

rssdNDwqifmKprcunVQ7YC57n4agAjniVs

Ось

Кролян Мороз застрял в новичках на долго !!!! 

Да ты что Оо?

Много нас

~300 Mhash/s

I'll be careful

Reasonable restriction I think

thanks a lot

Greets to all