@

Dell 3007WFP + CAC-1510 Resolution Issues

Updated 4 days ago in USB Type C
Unfollow
5 on 20-04-2025

Hello, I need a bit of help. I recently bought a Dell 3007WFP monitor for my Mac Studio.
While it works, I do not like the fact that it is displaying at a poor
resolution at 1280×800 instead of the it’s suggested resolution of 2560×1600. Whenever I would select a resolution higher than 1280×800 then the monitor would either go black or glitch out. However, just the other day I bought a Club3D CAC-1510 DVI to usb c adapter to fix the quality issue, but then the adapter came and I plugged it in and I ended up with the same results as before, therefore I was wondering if there is a step I’m missing or something? My DVI cables are indeed dual link, and the adapter I bought is indeed dual link too. I have the latest macOS version with 15 Sequoia. But yeah, do you guys have any suggestions or pieces of advice that could help get my monitor at a high resolution as intended? Please and thank you, I appreciate all the help.

Miguel.

Cancel
 
  • Liked by
Reply
joevt 0 on 21-04-2025

Go to the Displays preferences panel.
Click “Advanced…”
Select “Show resolutions as list”. Click “Done”.
Select “Show all resolutions”.
Do you see a 2560×1600 mode now?

If not, then try using SwitchResX or BetterDisplay to switch resolutions?

As a last resort, you might need to delete some display preferences files:
https://gist.github.com/GetVladimir/c89a26df1806001543bef4c8d90cc2f8?permalink_comment_id=4394783

Once you have 2560×1600 working, have a look at this thread:
https://insights.club-3d.com/thread/flickering-problem-with-cac-1510-a-and-apple-cinema-display-30-on-mac-mini-m1/

 

  • Liked by
Reply
Cancel
Cancel
novacinema15 0 on 22-04-2025

This is the result I get every time I click 2560×1600 as a resolution even through SwitchResX

I’m hoping it’s the cable I have, not the adapter or my Mac Studio, as I recently ordered another DVI-D cable.

 

  • Liked by
Reply
Cancel
Cancel
joevt 0 on 22-04-2025

Use SwitchResX to get the EDID from the display. It should have a timing for 2560×1600 60Hz.

In the SwitchResX current resolutions list, double click the 2560×1600 mode and verify that the timing parameters (pixel clock, horizontal and vertical sync front/back porch, pulse width) match those in the EDID.

Test the display with a different computer?

Test the adapter with a different computer?

 

  • Liked by
Reply
Cancel
Cancel
Wiktor 0 on 25-04-2025

You can try setting refresh rate a bit lower, to 55, 50Hz. Ofc cable might be the problem

  • Liked by
Reply
Cancel
Cancel
rojop64664 0 4 days ago

Hi Miguel, I totally feel your frustration. The Dell 3007WFP is a legendary monitor, but getting it to cooperate with modern Apple silicon is a classic tech headache. You mentioned using the Club3D CAC-1510 adapter; while that’s usually the go-to recommendation, I’ve noticed that macOS can be incredibly stubborn with EDID handshakes on older dual-link DVI hardware.

It actually reminds me of the troubleshooting loops I went through when trying to integrate modern networking with some older enterprise gear, like the ProLiant BL460C server blades. Those Octa Core 2.20GHz Xeon setups are still surprisingly capable for homelab tasks, but the moment you try to bridge that older architecture with brand-new interfaces, things tend to glitch out exactly like your screen is doing. It’s often a timing mismatch between the legacy signal and the new Thunderbolt/USB-C bus.

One thing to check—have you tried a third-party utility like BetterDisplay to see if you can manually override the resolution? Sometimes the OS just needs a little nudge to recognize that the bandwidth is actually available through that adapter.

 
 
  • Liked by
Reply
Cancel
Cancel