Originally Posted by BroadPwns
I'd expect the Z97N Gaming to work properly.
I'll test it then. Swapping the boards shouldn't take more than I've already waste on trying to make it work.
- TDP locked as well, so CPU is throttling even on default settings
- Overclocking behaviour is very similar, VCORE=RING no matter what is set in BIOS. The only difference is boot fail consequences. On Gaming 5 it is recovering itself after few attempts, in WIFI there is a need to clear CMOS by onboard switch.
I'm really disappointed with those boards.
It is something wrong with the Gaming 5 board, it previously was i3 on it. Overclocking with i7 5775C is almost not existant, with i5 4670K very strange behaviour. When I set Turbo Boost to Enabled, it boost at 2.6GHz, when I leave it as auto - boost on what is set
Finished my experiments:
It looks like the boards (both of them) do not like any clock ratio changes - CPU and Cache have to be set on auto, otherwise it will not boot or behave really strange, like max CPU frequency less than 3GHz. Also adjusting any power (Wattage) settings have no effect - still power locked in windows to 65W. However I can adjust turbo multiplier and all voltages, so Intel XTU is used only for changing cache multiplier, unlocking max power draw and changing power mode to adaptive.
My settings related to CPU in bios:
- All cpu multipliers to auto except Turbo which is 40x
- CPU Core 1.265V, Ring 1.245V, GFX 1.100V, VRM 1.8V, rest to "Normal"
On windows under XTU
- Turbo Power 120W, max 135W, 150A
- Cache multiplier to 35x
- All Voltage moves to Adaptive (CPU is idling most of the time unless it encode PLEX streams). Whole PC (with 6 HDD) idling at 59W.
Voltages under windows (AIDA)
- CPU Core 1.248V max
- Cache 1.235V max
- GFX not shown anywhere, but assuming its 1.1V
System seems stable, no problems.