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nouveau_redneck

macrumors 6502a
Original poster
Sep 16, 2017
551
867
I just purchased a mid 2010 Mac Pro with a ATI Radeon HD 5770 video card. It arrives later this week. I'm looking to purchase a monitor but it's not clear to me what resolution monitor is needed. I know the card supports 2560 X 1600, but I'm wondering if it will support a lower resolution monitor such as 2560 X 1440.

Any help would be appreciated. The selection of 2560 X 1440 monitors is much greater so I'd like to chose one of those if it is compatible.
 

nouveau_redneck

macrumors 6502a
Original poster
Sep 16, 2017
551
867
Will the HD 5770 run at t2560 X 1440 with drivers shipped in High Sierra, or do I need to find custom drivers?
 

Macschrauber

macrumors 68030
Dec 27, 2015
2,980
1,487
Germany
I run exactly the same setup. 5.1, 5770, Samsung 32" Monitor at 2560 X 1440. Works with DVI-D Dual Link and with a MiniDisplayPort to DisplayPort Cable - If DisplayPort set your Monitor to DP Version 1.1
 

kohlson

macrumors 68020
Apr 23, 2010
2,425
737
A friend's mid-2010 with stock 5770 now runs a Dell U2718Q 4K monitor, set at 1440p. Works over the supplied mDP - DP cable. He's pretty happy with it. It replaced an older Dell 24-in display.
 

CheMillan

macrumors regular
Jan 5, 2015
104
52
Los Angeles
I just purchased a mid 2010 Mac Pro with a ATI Radeon HD 5770 video card. It arrives later this week. I'm looking to purchase a monitor but it's not clear to me what resolution monitor is needed. I know the card supports 2560 X 1600, but I'm wondering if it will support a lower resolution monitor such as 2560 X 1440.

Any help would be appreciated. The selection of 2560 X 1440 monitors is much greater so I'd like to chose one of those if it is compatible.


My Mac Pro Mid 2010 has a Dell 34" UltraSharp U3415W connected to the MiniDisplay port of an Nvidia GT120 graphics card. The Dell monitor runs smooth at the full native resolution of 3440x1440 at 60 hertz refresh rate.
 

Chrissie10

macrumors newbie
Mar 23, 2018
1
0
Ulm, Germany
I have just upgrade my macpro 5,1 to QuadroK5000 4GB because I would like to go for a bigger screen.
I am considering a 34" model, ie. Dell U3417W or LG 34UC98. I guess the quadro should be able to handle 3440 x 1440 at 60 Hz. We do mainly pro work (Cad and DTP) on our machines.
Does anybody have any experiences?
 

privpiotr

macrumors newbie
Apr 29, 2019
8
0
Hi Guys. My mac is 5.1 mid 2010 equiped with standard HD5770 1Gb Mac card on board. I bought Dell U2718Q, connected it to mac Pro with mDP->DP cable. Monitor runs in 4k wit 30Hz. It is ok for me ( no games, just work with documents ). Frequency is as in manuals for 5770 but.....I CAN scale entire visible area of screen EXCEPT all areas of system informations as: first row on the screen:
  • left corner apple, then everything what is in row on right side from apple.
In example if there is Opera browser so name Opera, file, edition etc etc
  • Same story with everything on right side as date, clock, wifi etc etc
SEE UPLOADED SCREEN

I cant find solution with Dr.Google :-/
Please support me
Thx
screen 1.png
 

h9826790

macrumors P6
Apr 3, 2014
16,656
8,587
Hong Kong
Download ResXtreme and check if there is any 2x Scale resolution. If yes, select the one that you want.
CHG90 HiDPI options.png


If no 2x Scale available, run this command in terminal and try again
Code:
sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true

3840x2016 display resolution is good, however, you should keep the "UI resolution" at something like 2560x1440. Otherwise the OS UI will be too small for 27" display.
3840x1080 HiDPI.png
 
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privpiotr

macrumors newbie
Apr 29, 2019
8
0
Thank you very much. I will try it tomorrow.
In meantime I got information from DELL support that......Apple is NOT supporting 4k DELL U2718Q monitor from Sierra OSX o_O
Only Windows is supported. W E I R D
 

LFO8

macrumors regular
Apr 27, 2019
228
102
I run exactly the same setup. 5.1, 5770, Samsung 32" Monitor at 2560 X 1440. Works with DVI-D Dual Link and with a MiniDisplayPort to DisplayPort Cable - If DisplayPort set your Monitor to DP Version 1.1

I also used my HD5770 to power my new BenQ display at 1440p. After two days my HD5770 died. This could be a coincidence ofcourse as I have had my 5,1 Mac Pro since 2014 (purchased it refurbished at the time) and I bet the HD5770 had seen some years of action before that. It was always quite noisy.

Waiting for all the parts to arrive in the mail so I can hook up my newly Sapphire Radeon 580RX Pulse 8Gb.

I hope that saves my beloved 5,1 as I have run all tests and all that is left as the most likely cause is that my HD5770 simply died.
 
Last edited:

privpiotr

macrumors newbie
Apr 29, 2019
8
0
Hi Guys. I solved problem. Dell U2718Q has been exchanged to LG 27UK850-W. Zero weird messages on resolution choice panel ( i.e. 2560x1440 /low resolution/ !!!! ) and blurred edges of icons, fonts etc. Next station Sapphire RX590 Nitro+SE
:)
 

LFO8

macrumors regular
Apr 27, 2019
228
102
I also used my HD5770 to power my new BenQ display at 1440p. After two days my HD5770 died. This could be a coincidence ofcourse as I have had my 5,1 Mac Pro since 2014 (purchased it refurbished at the time) and I bet the HD5770 had seen some years of action before that. It was always quite noisy.

Waiting for all the parts to arrive in the mail so I can hook up my newly Sapphire Radeon 580RX Pulse 8Gb.

I hope that saves my beloved 5,1 as I have run all tests and all that is left as the most likely cause is that my HD5770 simply died.

This fixed it. My 5,1 lives again and the RX580 runs great.
 

Macschrauber

macrumors 68030
Dec 27, 2015
2,980
1,487
Germany
The more pixles a GPU has to drive the more workload it has.

So the bigger screen can be the trigger to brick a GPU what already has been worn out by age, dust and old thermal paste.
 
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LFO8

macrumors regular
Apr 27, 2019
228
102
The more pixles a GPU has to drive the more workload it has.

So the bigger screen can be the trigger to brick a GPU what already has been worn out by age, dust and old thermal paste.
Yes, was my line of thinking too.
 

MIKX

macrumors 68000
Dec 16, 2004
1,815
691
Japan
I just purchased a mid 2010 Mac Pro with a ATI Radeon HD 5770 video card.

Forgive me for saying this but why use such an old HD 5770 in a 2010 cMP ?
( they were greatin their time ! I have two of them !
)​
The HD 5780, the HD 7950 and the HD 7970 & the R9 280X cards are all imminently EFI flashable AND except for the 5770 & 5870 are " Metal supported" = You can use these cards to install Mojave or update your cMP firmware.

Even using an HD 7970 or R9 280X is rewarding in either High Sierra or the current release of Mojave. Of course It depends how you want to use your cMP.

Note : I "believe" that both the HD 7970 & the R9 280X can run on 4k monitors .. but. . as I do not have a 4k monitor . . . . someone more knowledgeable please chime in.
 
Last edited:

Chopsi

macrumors newbie
Jan 7, 2021
2
2
Hello all - I have a mac pro 5.1. I have just bought a Samsung U32R590 32Inch Curved UHD 4K Monitor 3840x2160 HDMI.
The specs are
2 x 2.4 GHz Quad-Core Intel Xeon, 6 GB 1066 MHz DDR3 ATI Radeon HD 5770 1024 MB.
The best display resolution i can get is 1080p. The graphics card is supposed to support up to 2560x1600.
I have used display port to HDMI and also the dvi dual out to hdmi. Still the best i can get is 1080p.
Any help as to how to get a better resolution?
Thanks in advance
 

Nguyen Duc Hieu

macrumors 68040
Jul 5, 2020
3,016
1,006
Ho Chi Minh City, Vietnam
Hello all - I have a mac pro 5.1. I have just bought a Samsung U32R590 32Inch Curved UHD 4K Monitor 3840x2160 HDMI.
The specs are
2 x 2.4 GHz Quad-Core Intel Xeon, 6 GB 1066 MHz DDR3 ATI Radeon HD 5770 1024 MB.
The best display resolution i can get is 1080p. The graphics card is supposed to support up to 2560x1600.
I have used display port to HDMI and also the dvi dual out to hdmi. Still the best i can get is 1080p.
Any help as to how to get a better resolution?
Thanks in advance

The cheapest solution is to change the video card with one that has HDMI output natively. RX560, perhaps?
 

h9826790

macrumors P6
Apr 3, 2014
16,656
8,587
Hong Kong
Hello all - I have a mac pro 5.1. I have just bought a Samsung U32R590 32Inch Curved UHD 4K Monitor 3840x2160 HDMI.
The specs are
2 x 2.4 GHz Quad-Core Intel Xeon, 6 GB 1066 MHz DDR3 ATI Radeon HD 5770 1024 MB.
The best display resolution i can get is 1080p. The graphics card is supposed to support up to 2560x1600.
I have used display port to HDMI and also the dvi dual out to hdmi. Still the best i can get is 1080p.
Any help as to how to get a better resolution?
Thanks in advance
Use display port connection directly.
 
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