UEFI is a new BIOS Concept, BIOS like a GUI, FYI for you who have no clue, Gigabyte boards are equipped with the proper hardware for UEFI BIOS. THey will have it shortly after release. As far as I can tell ASUS UEFI is a bit buggy, as are the SB chips themselves. Give it a month or two before you buy or you are going to be having a nice headache. For example until today as well ASUS UEFI wouldn't allow you to OC without having C1E and EIST enabled, there are many other bugs just like that. I feel like Gigabyte did the right thing allowing users to use non UEFI and UEFI BIOS. For example you can tell by the BIOS size on their site the original BIOS had no UEFI Loader which allows 3tb+ boot, it is also the best overclockers, except for F6X that isn't on the site yet.
One thing to mention is that on all other boards, you have to OC with turbo mode, as in the cpu is only running at 52x for 5.2ghz when loaded, this is nice and all, but when you run somthing non cpu intensive, you wont run at full speed, and aside from benchmarks nothing is full cpu intensive. i think its nice, but Gigabyte also gives you the option to run turbo or not. BUT I have found turbo has its uses, such as these chips HATE extreme cold, but when at 5.2ghz i have to push 1.53v, with LLC Level2, this pushes vcore to 1.56v, what this great thing does it take my cpu temp to 99c throttle point when running IBT. Well here is the problem you can't just cool down the chip, as it HATEs the cold, under 20c the freaking thing freezes like no tommrow, i have to literally let it get hot to overclock. It has this problem for instance at 0c you can run 4.7ghz max and at 5.2ghz you need to be above 30c, i have an early ES chip D1 stepping all retail are D2 stepping are a small bit fixed on this issue, but with turbo I can open the window let 0c weather in and cool it down for 5.2ghz at ibt, then as soon as load is off and the cpu goes down from 80c (with cold air) to 5c the clock needs to be reduced or the system crashes. its terrible its stable at 5.2ghz but when cold its not. My chip also sucks, and so does my other it wont do past 4.8ghz(same stepping). Retail chips don't have this problem and also run much cooler.
Also almost all the boards OC the same, Gigabyte, ASUS, and Intel boards right now take the cake becuase of an option added today to ASUS and Gigabyte boards called CPU PLL Overvoltage, which when enabled will allow people who are having trouble with mutliplier blocks, hit higher OCs. All other boards are essentially blocked at 5.2ghz.
I woudl go with a board that you like style wise, and which has the features you want, sata6g, usb3, lan, stuff like that. The P67A-UD5 shoudl be around the price point of the UD3R.
Edited by Sin0822 - 1/3/11 at 9:37pm