Apollodoros :
cool, all im worried about is a defect out of box.
So far I have dealt with it on the Hero (2 outta 2), the Z97-A, Sabertooth and Maximus VI Formula Builds. It's not a "1st stepping, (early boards) thing. Asus **officially** announced two fixes for it..... but now denies the problem exists.
1st fix was a clear BIOS, do this do that, change this update that thing that does still serve to clear the bug.... this thread is still being posted to (last post was February 7th
http://rog.asus.com/forum/showthread.php?36676-Frozen-Time-Clock-in-UEFI-The-Fix/page36
2nd fix was a "Hey fellas we fixed it" announcement saying that they will have a new BIOS to fix it. The BIOS was posted for 12 boards and them immediately pulled. The announced fix for RoG boards was never released.
http://rog.asus.com/forum/showthread.php?35490-Sabertooth-Z87-Bios-Clock-Issue&p=408653&viewfull=1#post408653
Again, the 1st BIOS release was supposed to fix 12 boards
"UEFI builds 2*** released or will be up shortly on the support pages - fix list states RTC stop issue cured:
Model Name BIOS ECN NO.
Z87-A 2005 EN-0204103
Z87-C 2004 EN-0204123
Z87-PRO 2005 EN-0204140
Z87-PLUS 2004 EN-0204149
Z87-EXPERT 2004 EN-0204089
Z87-DELUXE 2004 EN-0204139
Z87-DELUXE-QUAD 2004 EN-0204143
Z87-DELUXE-DUAL 2004 EN-0204141
GRYPHON-Z87 2004 EN-0204171
VANGUARD-B85 2004 EN-0204173
It was also announced that RoG Boards BIOS fix was forthcoming. You can check all the above threads (as well as newegg reviews) to confirm that users are still experiencing the problem with new purchases.
My biggest problem here tho extends from Asus' official stand on the matter:
1st - Our bad .... ""we have a fix for you, here it is. This fix turned out to be temporary.
2md - "Sorry about that chief, we were able to duplicate the bug with returned boards and we have a new BIOS which fixes it". That BIOS is still not available.
3rd - "Who, what, where ? I have no idea what you are talking about ... we have no record of any reported problems of this type".... and Asus forum staff are no longer allowed to discuss it.
Looking at how both have fared from Z87 to Z97, I tracked how many negative reviews (1 and eggs) were posted on both boards and they run about the same.
Z87 Asus Hero - 17%
Z97 Asus Hero - 25% (18% one egg)
Z87 GD-65 - 17%
Z97 GD-65 - 24% (12% 1 egg)
Looking at overall quality from Z87 to Z97 this has been somewhat of a trend:
http://www.tomshardware.com/forum/edit/14961221
Again, I used Asus boards almost exclusively for 10 years ..... one can argue just how valuable newegg reviews are but whatever weight you put to them should give some consistency year to year..... the above link was put together using boards I have actually built with and ... something has changed.
The GD65 is not exactly a shining star here with 24% 1 or 2 egg reviews .... the 1% lead of the GD65 is statistcally insignificant..... tho the 18% versus 12% 1 eggs less so. Aside from the Clock Bug, I'd put the two boards about equal. The only thing that really makes them unequal, again aside from the clock thing, is the $50 price premium you pay for the Asus logo..