Cpt Underpants :
Even if it doesn't deteriorate board temps, if you aren't doing heavy overclocking why the need for motherboard thermal armour anyways? Motherboard temps are not an issue at all for anyone but the extreme/competition overclocker. And defective parts are a virtual non-issue for reputed manufacturers, the failure rates are incredibly low to begin with. Even if you halved the chance of getting a defective board by buying a sabretooth, it is going from ~1-3% to 0.5-1.5% (depending on manufacturer). I don't see much of an argument to pay more for MAYBE 1% lower RMA rates -_- the difference is negligible.
As far as rationalizations for $100 boards, I would have to agree with you to a certain degree, but I would say your best bet is to pay for tangible features you want; sata ports, pcie slots, usb headers, onboard lan, etc etc. stuff like thermal armour is very suspect in any benefit it even provides.
well, there is more to the sabertooth than the thermal armor. there is the back plate that i mentioned, more sata 3 ports than ive seen on the average board, 2 esata ports, a decent nic from what ive heard, made with more durable components than the average motherboard (although that could be just advertising on asus' part, im not really one to know what bits actually make it more durable), dust covers for all your unused ports, a better than average onboard sound from what ive heard, more usb ports with the asmedia controller, some utilities ive heard are useful like thermal radar, the extra fans, and, if you get the z87 version there is some more stuff
i wouldnt call defective parts a non-issue, just less of an issue with trusted manufacturers. and i dont really want to be part of the 1%, especially if it were my first build
but anyways, i think we've beat the issue of the sabertooth to death by now, and regardless he already got it anyway and for the price of a much cheaper and possibly lower quality board
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about the optical drive..do you need a blu ray player? if you watch blu-ray i could understand but it might not be terribly useful if you dont. also, i believe you usually need to buy separate software to make it work? or maybe that's something different i am thinking of