Does it take a long while to POST? Around 15-20 seconds longer than a usual POST? Check the back of the board for any damage to the pcb with particular attention to the tracts for the memory lanes. I've seen even a small scratch in these tracts cause long POST times and errors in recognising memory. As for the ASUS vs Gigabyte, i've had experience with both boards and my personal preference is the Gigabyte. The gigabyte seems to be easier to OC with, requiring less CPU Voltage to reach the magic 4.0Ghz mark. Version 2.0 being easier to OC vs 1.0 or 1.6.
What cooler are you using? See This thread where I had the same problem using a Thermalright VenomousX cooler on a P6X58D-E... ________ Daisygirl live
Good policy to have. But i bet you are just itching to get that build up and benchmarking aren't you? In all honesty, both boards; the ASUS and the Gigabyte are equally as capable. I'm currently on an ASUS and my first choice would typically be ASUS, but the X58A-UD3R is such a good board, it's hard to ignore it. It comes down to personal choice on this one; which team do you prefer?
That's the same RAM that I use. There was a bad batch of Trident RAM that G.Skill were replacing but that was earlier this year but had the same symptoms of 1 or 2 sticks not being recognised. There's a long thread on their forum about it. To be fair they quickly recognised they had a problem and swapped it out with little fuss. You probably know that it requires a very high QPI/VTT voltage to run it at it's rated speed with a high CPU overclock but it should be OK with under low voltages at stock settings.
You and Jeff being playing tiddlie winks or what mate. Not looking good on the western front with you two and motherboards. What have I told you two about porn sites never mind your eyes going squint your mobo does as well. Buddy reading the write up on numerous sites they reckon they are better than the Deluxe versions and definitely gave it the thumbs up
I had the same problem so went for Corsair sticks at 1333mhz low voltage and have never had the same problem since. I don't mind playing around OC the GPU but when it comes to voltages I steer clear until someone shows me exactly what is what.
Randomly G.Skill has some issues with Gigabyte boards. I had a kit and gave it back in the end. I know they are looking into it still (very off the record, both companies blame each other). Go into the Gigabyte BIOS and look at the MIT section that shows you the current specs. See which DIMM is being lost. Then take it out and use a rubber (yes, eraser) to rub the contact points along the bottom. Chances are dirt or tarnish is preventing the electrical connection. Also blow out the socket, there's not much else you can do. That should fix it. If not, it's got a dead SPD chip and needs RMAing.
Does your POST take ages? I press the power button and it must take a good 8 seconds for the monitor to show the post screen then another 10 seconds or so to check everything else?
All the Asus motherboards I've had in the last couple of years do that. It's supposed to be the board checking that the power supply is OK before then going through the POST process.
A great board. Mines been running my i7 930 at 4ghz pretty much 24/7 for the last 2 months with no problems at all. Disable Express Gate and any other unneeded stuff in the bios and you should find it starts quite a lot quicker.