The issues most likely stem from the fact that you are using a 2005 video card with a 2017 monitor that has new HDMI and DP/mP revisions. The Quadro FX 4500 VGA out cannot send a 60Hz signal to the U2715H HDMI 1.4 in ports. Forcing you to use a custom 30Hz. Forget the VGA. Quadro FX 4500 DVI to U2715H DP or mDP requires an active converter =
Quadro FX 4500 DVI out --> DVI to mDP converter --> U2715H mDP to DP cable --> U2715H DP in port should produce 2560x1600 60Hz.
Or for less money get a new 2017 PCIe x16 workstation video card that has DP out port or mDP out port.
Thanks for your speedy response Chris. Apologies for the confusion - to be clear I have never used the FX 4500 VGA output and all tests have been using the card's DVI output. I recognise that I'm asking a lot from a graphics card released in 2005 but it was highly specified when new and the whole PC rig is still working well (except for the loss of the PERC/RAID/SCSI set up on moving to Windows 7 - no driver support).
I spoke to the supplier of the monitor today and they seemed to think that Dell could be clearer by highlighting that they are fitting HDMI (MHL) inputs to this monitor and not standard HDMI inputs. He seemed to think that HDMI (MHL) will only achieve a theoretical max resolution of 2048 x 1152 and that the full native resolution on this monitor (2560 x 1440) can only be achieved via the DisplayPort.
That kind of contradicts my current experience as I can now achieve 2560 x 1440 @ 40 Hz using the card's DVI output into the monitor's HDMI 2 input (but still not into monitor HDMI 1 - I guess that's a production tolerance issue). The good news is that the black outs seem to have reduced in frequency for the time being.
I've looked up the cost of an active converter and agree with you that a graphics card upgrade is probably the best way to go on a value basis. I'd be happy to buy a Dell card with both a DisplayPort and DVI out - do you have any suggestions?
Again, thanks for your help on this - it is much appreciated.
DELL-Chris M
Community Manager
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56.9K Posts
0
February 13th, 2017 07:00
The issues most likely stem from the fact that you are using a 2005 video card with a 2017 monitor that has new HDMI and DP/mP revisions. The Quadro FX 4500 VGA out cannot send a 60Hz signal to the U2715H HDMI 1.4 in ports. Forcing you to use a custom 30Hz. Forget the VGA. Quadro FX 4500 DVI to U2715H DP or mDP requires an active converter =
Quadro FX 4500 DVI out --> DVI to mDP converter --> U2715H mDP to DP cable --> U2715H DP in port should produce 2560x1600 60Hz.
Or for less money get a new 2017 PCIe x16 workstation video card that has DP out port or mDP out port.
DELL-Chris M
Community Manager
•
56.9K Posts
0
February 14th, 2017 06:00
Quadro K620, 2GB DDR3, PCIe 2.0 x16, Low Profile, DVI/DisplayPort
Long_Time_Dell_1
2 Posts
0
February 13th, 2017 12:00
Thanks for your speedy response Chris. Apologies for the confusion - to be clear I have never used the FX 4500 VGA output and all tests have been using the card's DVI output. I recognise that I'm asking a lot from a graphics card released in 2005 but it was highly specified when new and the whole PC rig is still working well (except for the loss of the PERC/RAID/SCSI set up on moving to Windows 7 - no driver support).
I spoke to the supplier of the monitor today and they seemed to think that Dell could be clearer by highlighting that they are fitting HDMI (MHL) inputs to this monitor and not standard HDMI inputs. He seemed to think that HDMI (MHL) will only achieve a theoretical max resolution of 2048 x 1152 and that the full native resolution on this monitor (2560 x 1440) can only be achieved via the DisplayPort.
That kind of contradicts my current experience as I can now achieve 2560 x 1440 @ 40 Hz using the card's DVI output into the monitor's HDMI 2 input (but still not into monitor HDMI 1 - I guess that's a production tolerance issue). The good news is that the black outs seem to have reduced in frequency for the time being.
I've looked up the cost of an active converter and agree with you that a graphics card upgrade is probably the best way to go on a value basis. I'd be happy to buy a Dell card with both a DisplayPort and DVI out - do you have any suggestions?
Again, thanks for your help on this - it is much appreciated.
IlincaN
1 Message
0
May 26th, 2018 00:00
I have the same problem on a Mac Book Pro late 2011 with Intel HD Graphics 3000 512 MB. Will the ATLONA AT-DP400 work in this case too?
Thank you!
Ilinca
DELL-Chris M
Community Manager
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56.9K Posts
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May 26th, 2018 07:00
Unknown. The U2715H was never tested by Dell on the proprietary Apple hardware and software. You should ask the Apple users on their Forum.