I got some new mem in today. G.Skill 2400 RipjawZ:
http://www.newegg.com/Product/Produc...82E16820231585

Haven't done much testing, but the 7850K seems to like it so far...


I left Prime running on that rig (while posting this msg), so when I'm done I'll check, and update the duration of stability.
I'm still having problems with the HTRef clocks on this ASRock board... I've updated bios to the 2.81 beta and DL'd the sata driver package from ASRock.
Even with lower CPU multi, the HTRef is still VERY sensitive and has a 102-105 limit before stability craps out!
HWMonitor still doesn't show the iGPU temps either, even after the updates to bios and drivers...

I'm almost regretting not going for the Asus A88X Pro. ASRock makes great boards, but I still think their bios team is a little weak...
MicroCenter has a really good return policy, so If I can't figure out how to work through my problems I may return this board and swap it out for the Asus this weekend.
Maybe it's just me... I'm so used to working with Asus.

Has anyone had any luck oc'ing the IMC on these Kaveri chips?
From a CMOS reset, this board sets the IMC voltage to 1.40v which seems pretty high to me!
I've even tried lowering the GPU clock to ~540 and still can't get much more than 1900 on the IMC...

For any ASRock fans out there, don't get me wrong! This is a FINE board with lots of nice features!!!
It just doesn't seem that OC friendly to me...

Update on new Mem and Prime:
1Hr and 45 minutes and still stable in Blend @ 2400 10-12-12!