MP 1,1-5,1 Catalina - Connect Radeon 5770 to Samsung U28590D 4k

[danallen]

Questions:
1. Would mini dp to regular dp cable work better than mini dp to hdmi adaptor?
2. Is there a different adaptor I should use?
3. Is there any potential benefit to getting a new hdmi cable? What level of hdmi is max this gpu and monitor can use?

BACKGROUND
Pending replacement of a failed R9 280x GPU, I need to run Radeon 5770 in CMP 5,1 (Catalina) to a Samsung U28590D 4k monitor. The monitor has one regular dp and two hdmi ports. I have it running now with a borrowed adaptor, explained below. I have to return the adaptor now.

MONITOR

SAMSUNG U28E590D 28-Inch 4k UHD LED-Lit Monitor

Samsung UE590 28" UHD-QHD LED Monitor: Comfortable and Immersive Viewing Experience, Easy on the Eyes with Flicker Free and Eye Saver Mode, Optimized Entertainment Experience, Energy Efficient. With stunning Ultra HD picture quality, PC viewing, gaming and more come alive with incredible lifelike...

www.amazon.com

It is running with a borrowed adaptor I have to return now.

The setup that works is through a mini displayport out of the 5770, to the borrowed mini dp to hdmi adaptor, then through an hdmi cable into HDMI port 2 on the monitor. I don't know what version of hdmi the cable supports. I have to return the adaptor to its owner asap.

The adapter manufacturer states this connector supports 4K resolution but I'm not getting anywhere near that not sure why.

Link to adaptor I am borrowing

Mini DisplayPort to HDMI Adapter (4K) | DPN2032W4K | Cirago

Thank you for taking time to read this. Any information you can provide will be very much appreciated. Thank you

 

[jav6454]

I don't believe the HD 5770 is able to pump to a 4K display. It's a really old GPU.

 

[tsialex]

ATI HD 5770 support ends with High Sierra, it's not even a METAL supported GPU. It's a completely unaccelerated GPU with Mojave/Catalina/BigSur.

 

[danallen]

ATI HD 5770 support ends with High Sierra, it's not even a METAL supported GPU. It's a completely unaccelerated GPU with Mojave/Catalina/BigSur.

This is a contingency rig, until I get a new gpu. It will be a few weeks before I can replace the metal card I was running. Beats running Windows 8 on a Lenova IdeaPad, another fallback I have. The 5770 used to provide 4k at 25 fps under High Sierra. I don't have the cable I used then. It's coming back to me as I write. It was a Mini Displayport to Displayport. I think there was an adaptor, not certain about that.

 

[tsialex]

This is a contingency rig, until I get a new gpu. It will be a few weeks before I can replace the metal card I was running. Beats running Windows 8 on a Lenova IdeaPad, another fallback I have. The 5770 used to provide 4k at 25 fps under High Sierra. I don't have the cable I used then. It's coming back to me as I write. It was a Mini Displayport to Displayport. I think there was an adaptor, not certain about that.

Ok, but you can't work with a HD 5770 past High Sierra, it's completely unaccelerated and only really useful for diagnostics.

 

[macguru9999]

This is a contingency rig, until I get a new gpu. It will be a few weeks before I can replace the metal card I was running. Beats running Windows 8 on a Lenova IdeaPad, another fallback I have. The 5770 used to provide 4k at 25 fps under High Sierra. I don't have the cable I used then. It's coming back to me as I write. It was a Mini Displayport to Displayport. I think there was an adaptor, not certain about that.

If you buy the card I suggested earlier you will be OK. The 5770 will not work properly because its too old.

 

[danallen]

Ok, but you can't work with a HD 5770 past High Sierra, it's completely unaccelerated and only really useful for diagnostics.

Thank you for explaining this vital consideration. When I really considered the implications of what you took the time to tell me, it hit me like a ton of bricks. The point of this is so important, I put together a special blog page to lay this out.

Work Is Impossible With My Degraded Computer

Programming

legacy-systems.biz

 

[danallen]

I guess I will cut the cables I am using now and keep my computer turned off until I get a new gpu.

Just like the crew of Apollo 13 went to sleep and did nothing when half their ship blew up, leaving them with a space craft not fit for flight when they were 200,000 miles above the surface of the Earth traveling more than 2,000 mph away from home.

Why bother working with what you have when you can criticize what you have for being inadequate?

 

[danallen]

Actual effect of Radeon 5770 vs. metal-enabled card I had:

1. The Radeon has boot screen, that is a plus.
2. Cannot record video. iMovie will not open.
3. The system is slowed down when bringing up web pages and opening applications.
4. In Preview, cannot produce colors with less than 100% opacity. Other than that, all colors are available and working.
5. Typing this post is the same with either card.
6. All fonts are normal.
7. Web browsing slowed by a few seconds per page.
8. Virtual machines used for web development on cMP are operating normally.
9. IDE used for web development is operating normally.
10. Python runs normally, including a headless browser used for app development
11. Dragging windows around the screen is jerky
12. Sound is normal, which is good, because I listen to a lot of stuff.
13. Videos in mp4 play perfectly, after gurggling a few seconds after I click start but before the video starts. .mov does not play.
14. Screen resolution is a lot less, but that will be corrected with the right cabling solution.
15. Oh yea! This thread is about what cable works best. So far, not a word posted on the question, everyone so busy telling me this system is unusable or not proper. What a bunch of pompous asses. Do you think I don't know that replacing the croaked GPU with something better, at least metal-enabled, would perform better? Do you think I would not do that if I could? On the subject of how the Radeon 5770 performs in this situation, it looks to me like you are pontificating the obvious in general terms and that you in fact do not know the actual performance profile, other than a non-metal card will not work at all on the step of installing macOS of a version later than High Sierra. You can correct some technicalities but for whatever reason, you cannot put yourself into the shoes of a person with constraints you do not have. This is the kind of behavior that gives our industry its well deserved reputation for being a bunch of anti-social, arrogant nerds. As for my unpleasant manner, I would point out that insistence on pleasant manner has gone a long way toward destroying Western civilization. A little more lively is not going to hurt anyone.

All in all, I have worked with much worse systems than the one I am running today under contingency conditions that are not my preference.

 

[macguru9999]

Actual effect of Radeon 5770 vs. metal-enabled card I had:

1. The Radeon has boot screen, that is a plus.
2. Cannot record video. iMovie will not open.
3. The system is slowed down when bringing up web pages and opening applications.
4. In Preview, cannot produce colors with less than 100% opacity. Other than that, all colors are available and working.
5. Typing this post is the same with either card.
6. All fonts are normal.
7. Web browsing slowed by a few seconds per page.
8. Virtual machines used for web development on cMP are operating normally.
9. IDE used for web development is operating normally.
10. Python runs normally, including a headless browser used for app development
11. Dragging windows around the screen is jerky
12. Sound is normal, which is good, because I listen to a lot of stuff.
13. Videos in mp4 play perfectly, after gurggling a few seconds after I click start but before the video starts. .mov does not play.
14. Screen resolution is a lot less, but that will be corrected with the right cabling solution.
15. Oh yea! This thread is about what cable works best. So far, not a word posted on the question, everyone so busy telling me this system is unusable or not proper. What a bunch of pompous asses. Do you think I don't know that replacing the croaked GPU with something better, at least metal-enabled, would perform better? Do you think I would not do that if I could? On the subject of how the Radeon 5770 performs in this situation, it looks to me like you are pontificating the obvious in general terms and that you in fact do not know the actual performance profile, other than a non-metal card will not work at all on the step of installing macOS of a version later than High Sierra. You can correct some technicalities but for whatever reason, you cannot put yourself into the shoes of a person with constraints you do not have. This is the kind of behavior that gives our industry its well deserved reputation for being a bunch of anti-social, arrogant nerds. As for my unpleasant manner, I would point out that insistence on pleasant manner has gone a long way toward destroying Western civilization. A little more lively is not going to hurt anyone.

All in all, I have worked with much worse systems than the one I am running today under contingency conditions that are not my preference.

I dont think you should blame others for telling you what you need to hear. If you cannot afford the right equipment you should not blame or abuse others for your shortcomings. You sound a bit eccentric.

 

[KeesMacPro]

Deleted.

 

[Nguyen Duc Hieu]

Questions:
1. Would mini dp to regular dp cable work better than mini dp to hdmi adaptor?

Using a single cable mDP-male to DP-male will work the best as no conversion is needed.
A mDP -male to HDMI-male cable (no adapter) still works well at 1080p, too.
The HD5770 is best used for OS installation, then you can swap it with a Metal support card (no need to flash) like RX 560, RX580 etc.
Or go Opencore way with the new card and store it away somewhere for future trouble shooting.
I once used the DP to mDP cable to connect from my GTX680 to iMac 2010 in Target Display Mode, and it worked well.