sando99 :
I'm very disappointed of R9 280X series. Replaced Sapphire R9 280X Vapor-X due to coil whine. And my current Asus R9 280X DCIIT also has coil whine and probably artifacts. Now I am going to search for an Nvidia alternative. I will return my current card and I can pay a small amount of money. Can you suggest me something? I was thinking of GTX770 2GB, but I am afraid that 2GB will be insufficient soon. And I don't really want to spend so much money on the 4GB variant. Is there something better than the GTX770 2GB in that price range.
Coil whine is a result of the ceramic capacitors vibrating due to certain electrical frequencies, and bumping against the PCB of the video card.
It is a problem that can afflict every graphic card, power supply and motherboard in existence at random. However certain families of products have it occurs more often then others. The tahiti cored 7870xt, 7950, 7970, r9-280, r9-280x all are part of the family of cards that tends to get this more often then others. This is due to certain electrical frequencies being used in those cores are more likely to vibrate the capacitors then not. Throw in the fact that sapphire and power color apparently get their capacitors for those boards from the same supplier, and you have a perfect storm of coincidence that occasionally yields a coin whine a little more often in those cards then others.
That said, I have a r9-280x from MSI which has zero coil whine. when i say it's "more common" i'm not talking about large numbers. 10% chance across the whole product line is probably the highest percentage you'll ever see of coil whine. it usually is closer to 3%-6%' if you check nvidia forums you'll see plenty of titan and 780 and 770 owners suffering from coil whine as well.
So there are no guarantees.
As to your question. the 770 is roughly on par with a r9-280x... if you don't want to spend much money going with a 770, your only other option would be a gtx 680 or 670... though you'll likely have to buy them used.