Well, I've heard, and experienced, ASUS RMA process and it works much better for motherboards than their video cards.
Here's what happened with an ASUS 3870 TOP video card that died on me.....
8 months into using it (NOT overclocked, completely stock....), started failing after it was powered up for about a minute or so....artifacts, green lines would appear, etc.
RMA it.....get it back.....plug it in and it does EXACTLY the same thing, only quicker this time. Dig out my emails and numbers I'd copied down prior to sending it in. Seems they just rebagged the card in a new anti-static bag, boxed it, and sent it back...S/N was the same on the card I received as what I sent in. NO REPAIRS apparently done.
RMA #2.....get kicked up to Level 2 tech support......send it in, get it back a couple of weeks later. Same S/N on card but obvious repair done, shoddy resoldering of a couple of parts on it (sorry, not technical enough to know what parts were "replaced")......but plug it in and it's DOA.
RMA #3....Level 3 Tech support. Guy asks how many times has it been RMA'd. Tell him twice so far. He says typical....first RMA for video cards, at least, is to plug it in and if it produces any video on firing up, box it and return it.
Finally did get a brand new replacement card after RMA #3 and it's still in use today, almost a year later. But I've now got an ASUS HD4850 that the ASUS Smart Doctor is screaming the VRM's or whatever are overheating and it needs to be looked at by service center......again, not OC'd, completely stock. Not looking foward to this new merry-go-round of RMA's again.
Love ASUS products.....hate their RMA/repair service!