OP were you ever able to figure it out?
I have an MSI 390 as well and looking at 1600x1200 at 85HZ with my new CRT.
I ordered the DVI - D dual link which should arrive tomorrow, however after viewing this thread I ordered a VGA to DP for the higher bandwidth that may be required.
I'm currently waiting for a female-female DP adapter to connect my 5m DP cord with the VGA adapter https://www.komplett.se/product/846067/datorutrustning/kablage/skrmkablar/iiglo-kabel-vga-dp
It looks like the DP-VGA adapter I got is the same kind of adapter as the StarTech one that I originally intended, so I'll try it out and see if I'm satisfied with the picture quality. Otherwise I'll just have to look for one that can handle high resolutions specifically, like maybe that StarTech one.
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