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Author Topic: Will this GPU suffice?  (Read 2493 times)

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morton

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Will this GPU suffice?
« on: May 06, 2021, 12:00:45 pm »
Hi all, hope everyone is keeping alright.

I am in the process of finally piecing together a GM rig, and have this GPU I was given:

Vapour X Radeon HD 5870

Presumably this will work in conjunction with a JPac to get me some 15khz action yes? The DVI ports aren't labeled DVI-A for sanalog that I can see and there isn't any info I could find easily to tell me whether this card would work. I know not all Radeon hD cards will do what I need it to, but hopefully I just need a conversion connector and be off to the races. Any help is appreciated. Thanks.

psakhis

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Re: Will this GPU suffice?
« Reply #1 on: May 06, 2021, 01:55:18 pm »
Hi,

Initially you don't need jpac 15khz bypass (although you can continue using it for the controls); with crtemudriver on HD5870 you get 15khz natively.

I don't know what happens if you connect HD5870 at 15khz to jpac...seems overkill but maybe works as well.


Zebidee

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Re: Will this GPU suffice?
« Reply #2 on: May 06, 2021, 03:53:13 pm »
HD5870 is on the list of compatible cards.

You need to say what video heads it has - DVI-I, DVI-D, VGA etc. If you don't know a link or a pic would be enough. I imagine a card of that vintage likely has some analogue outputs.

For the JPAC, you may or may not need it - What are you going to output to? TV? Arcade monitor? Something else?


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morton

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Re: Will this GPU suffice?
« Reply #3 on: May 06, 2021, 05:23:34 pm »
I was going to install it into a Jamma cabinet.

As for the card... There's a Display Port, an HDMI, and two DVI ports not indicating if analogue or digital. The card originally came with a DVI to VGA adapter. I don't have one at the moment. I will need to order one if this will work.

Zebidee

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Re: Will this GPU suffice?
« Reply #4 on: May 06, 2021, 06:36:33 pm »
I was going to install it into a Jamma cabinet.

As for the card... There's a Display Port, an HDMI, and two DVI ports not indicating if analogue or digital. The card originally came with a DVI to VGA adapter. I don't have one at the moment. I will need to order one if this will work.

You will want to run the signals through JPAC to your JAMMA cabinet.

At least one of your DVI ports must be DVI-I (has analogue). You can tell which one because on one end there will be analogue outputs. Looks like a double division symbol welded together, like a line/bar with 2 pins on top and 2 pins on bottom. Female side usually has a cross with holes in each quadrant.

Here is an article explaining how to work out which is what:
https://www.ooberpad.com/blogs/audio-video-tips/what-is-the-difference-between-dvi-i-and-dvi-d

You'll need a DVI-VGA adapter. They are cheap.
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