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Analogue (VGA) support

Kurgen

Kurgen

Kurgen

Soldato
Joined
10 Apr 2015
Posts
4,269
Location
Hungerford, UK, Earth
Whats the necessity?, is it primary monitor, or for secondary screen etc? If it's secondary screens then you can use any onboard graphics at the same time to drive them.
 
Its both, The monitors are 23" HP monitors. these are docking monitors and normally connect direct to an HP laptop. but they have a single VGA as an auxiliary input (i got them free). now that i know its DVI-I i can look for 2nd hand GPU with VGA and DVI-I. its for 2D autocad with a bit of sketchup at 1080p
 
Kurgen said:
Its both, The monitors are 23" HP monitors. these are docking monitors and normally connect direct to an HP laptop. but they have a single VGA as an auxiliary input (i got them free). now that i know its DVI-I i can look for 2nd hand GPU with VGA and DVI-I. its for 2D autocad with a bit of sketchup at 1080p
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You can get a cable for like £6-7 that has a DisplayPort connector on one end and a VGA connector (I know that's not the proper name) on the other which will connect a modern AMD/Nvidia card to a VGA screen.
 
ubersonic said:
You can get a cable for like £6-7 that has a DisplayPort connector on one end and a VGA connector (I know that's not the proper name) on the other which will connect a modern AMD/Nvidia card to a VGA screen.
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The cheap cables and adapters won't work, as they don't do any actual conversion (i.e. they rely on the graphics card still having some physical analogue capability i.e. a RAMDAC?)

You need an "active" displayport to VGA adapter which are usually £20-£30 and actually contain there own DAC.
 
Armageus said:
The cheap cables and adapters won't work.
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Strange, I have two connected to my second PC running some old Dell monitors, plus another dozen in work.

Generally speaking, if a card/device doesn't have analogue capable DVI ports then it's DPs will usually be capable of using DP/VGA cables without an active converter.
 
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ubersonic said:
Strange, I have two connected to my second PC running some old Dell monitors, plus another dozen in work.
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On what graphics card? Specifically they don't work on the graphics cards mentioned than only have DVI-I.

(In the same way there was a whole host of issues with people trying to use passive adapters to run 3 screens when display port cards first came out)
 
Armageus said:
On what graphics card? Specifically they don't work on the graphics cards mentioned than only have DVI-I.

(In the same way there was a whole host of issues with people trying to use passive adapters to run 3 screens when display port cards first came out)
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Quite confused now lol.

My card at home is a MSI Gaming GTX980ti I got from here, the machines in work are Optiplex 790 USFF units that use the Intel GFX on their i5's.

Looking at the cables, they may actually be active as the VGA connector is quite long. In retrospect I just assumed they were passive as they were sub £10 and decent wheras the previous active adapters I had seen were like £30. Maybe this is just technology coming down in price /shrug.
 
Armageus said:
The cheap cables and adapters won't work, as they don't do any actual conversion (i.e. they rely on the graphics card still having some physical analogue capability i.e. a RAMDAC?)

You need an "active" displayport to VGA adapter which are usually £20-£30 and actually contain there own DAC.
Click to expand...

Got one new for £5.99 off t'internet which is an active converter and works just fine.
 
ubersonic said:
Quite confused now lol.

My card at home is a MSI Gaming GTX980ti I got from here, the machines in work are Optiplex 790 USFF units that use the Intel GFX on their i5's.

Looking at the cables, they may actually be active as the VGA connector is quite long. In retrospect I just assumed they were passive as they were sub £10 and decent wheras the previous active adapters I had seen were like £30. Maybe this is just technology coming down in price /shrug.
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980ti's normally included a DVI-I port though (i.e. the one that works with a DVI->VGA adapter), and consequently still include a RAMDAC (or whatever the "modern" equivalent is). Same with Intel onboard, they natively support analog output.

Issue is modern cards like the 1050 linked, have removed the RAMDAC, so cannot do any kind of analogue conversion, so only active cables work.
 
Armageus said:
980ti's normally included a DVI-I port though (i.e. the one that works with a DVI->VGA adapter), and consequently still include a RAMDAC (or whatever the "modern" equivalent is). Same with Intel onboard, they natively support analog output.

Issue is modern cards like the 1050 linked, have removed the RAMDAC, so cannot do any kind of analogue conversion, so only active cables work.
Click to expand...

Yeah, looking at the cables (or one of the ones in work) now I'm pretty certain they are actually active cables not passive, the elongated VGA plug is a potential giveaway.

I just assumed they were passive cos £7 lol, like the guy above pointed out the priced have dropped.

DSC_0833.jpg
 
Just buy a card that still had vga on it? Unless it's for a main build, plenty of the older generations that have some decent/good performance have the vga aswell as dvi and hdmi
 
As far as I know, the Pascal cards dumped analog outputs. An active adapter is needed as mentioned above, but they've been well under £20-30 for some time now. (although a dumb analog DVI to VGA adapter is cheaper still)
 
ExoMale said:
Just buy a card that still had vga on it? Unless it's for a main build, plenty of the older generations that have some decent/good performance have the vga aswell as dvi and hdmi
Click to expand...

yes an older gen card would probably be what I would go for. its not for gaming anyway
 
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