I recently purchased a Sapphire r9 280x Dual X OC, and one of the fans on it is a bit weak, I'm just wondering if there are any reccomended replacement fans or a whole new cooler available, or what do you folks reccomend
You could either RMA the card, or you could wait until a waterblock is released for it and buy that. I would personally RMA the card because whatever waterblock you will buy will be out of stock and expensive. Most waterblocks only fit a reference design PCB, I would assume. But rather than risk voiding the warranty on the card by replacing cooling features on the card with new ones, I would just RMA the card from the get go.