[SOLVED] PC locks up at 4k gaming. Where is my bottleneck?

oldbutslow

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Mar 23, 2011
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MY PC is 10 years old, but I have a Nvidia GTX1080ti GPU. Games are good at 1080P but PC crashes at 4k (sometimes requiring an unplug reboot). Where is my bottle neck?
ASUS p9p67 MB (bios; cpu set at performance, RAM set at XML) PCIe 3.0, sata 6
Intel I7 2600k cpu
Zalman 80+ 800 watt psu
Nvidia GTX 1080ti
16 GB RAM (4x4 ddr3)
samsung EVO SSD 1 TB
hard wired cable internet
GPU to pioneer prepro via HDMI
prepro to LG C7 OLED via HDMI
 

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