Hello all.
I am using this mobo for a year, but I have upgraded my CPU few days ago and I have noticed strange behaviour of CPU settings and RAM MP profile.
When all settings are set to default in BIOS, CPU works with 4.0 Ghz and Turbo mode is set to 44, 44, 43, 42 multiplier (Intel's default specs). RAM is set to 1333 CL9. Problem is that with default settings causes my machine to work on 50% of its performance! When I will set my RAM to 1600, as XMP profile, performance is fine! But turning on XMP profile causes my CPU to be automatically OC'ed to 4.4 GHz on all cores and voltage is being set to 1.235 what causes much higher temps. My questions:
1. Why, when set RAM to 1333, i have so bad performance? Every benchmark, like AIDA64, WinRAR shows almost 50% of default performance? Even some games like Borderlands2 drops to 17FPS? (with RAM set to 1600, games is running smooth 60FPS)
2. Why setting XMP profile is overclocking CPU automatically?
3. How to turn off the auto upgrade of the CPU? Only options are Auto, 20, 40, 60, 80%
Current is F4. I have tried to reflash it, no success.
Even tried F3. Still the same.
Is my mobo broken and I need to RMA it? Or it just need some newer BIOS?
My specs:
i7-4970k
G1-Sniper Z87 rev.1.1
G.Skill 2x4 GB (on QVL list)
Asus GTX 970 Strix
OCZ RM650W PSU