Originally Posted by cowbawx
That's ok just let me know when please.
OK, so I ran the test you wanted. BTW I have my RAM set manually. Here's the particulars...
1- Didn't have to remove dedicated GPU; just disconnected the DisplayPort cable
from it and plugged it into the MB DisplayPort to use the intel HD530 graphics. ATI card NOT used.
2- BIOS - Internal Graphics
: Enabled; Internal Display Output
3- BIOS - Go to Advanced Memory settings
, Disable XMP. Go to Memory Timing Mode
, set to Advance Manual. Under both Channels A & B
, under Channel A (B) Standard Timing
manually input your timings (CAS, tRCD, tRD, tRAS). Go to Advanced Voltage Control
, DRAM Voltage
, and manually input the voltage (keep it below 1.35. Mine is set to 1.340). The numbers can be gained from CPUZ under the SPD tab, the last set of numbers under XMP....
This shows the Intel Graphic info as well as my memory running at 3333MHz (which is what XMP would set it at)....
Here's a benchmark I ran....
Anyway with this configuration I had no display issues, even when I ran the benchmark.
That said, I did experience the issue you saw with XMP enabled, but disabling it (which set the RAM back to 2133MHz) got rid of the issue. I suspect, the Z170 boards does some crazy things to the integrated graphics on the CPU when enabled; more than likely voltage changes. Manually setting the RAM eliminated this. My guess, no proof.
Hope this helps.
Let me know.