Low graphics benchmark w/new GeForce GTX 1660 in Precision T5600
I just purchased and installed a new EVGA GeForce GTX 1660 SC Ultra Gaming video card, P/N: 06G-P4-1067-KR, in my Dell Precision T5600 workstation. According to Passmark's GPU Benchmark website, this video card should produce a benchmark score around 11,000. However, I'm only getting ~7,000. I have the card installed in a PCIe 3.0 16x slot and have connected the 8-pin power cable. I've re-installed the OS, Windows 10 Pro, twice and used the current Nvidia driver. What am I missing? Is there any way to troubleshoot the performance issue?