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Can an AMD RX580 run 3 4k displays? (Video Production)

Final Progeny
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All in the title really, can a RX 580 run 3 4K monitors simultaneously? This is for video production, NOT gaming. 

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Yes since it has enough HDMI and DP outputs, but don't expect it to render 4K anywhere fast.

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Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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No it cannot, the displayport 1.2 standard for 4k60 needs 17.28 Gbit/s and the rx 580 8gb has a maximum throughput of 42.88 Gbit/s for all ports combined.

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HDMI 2.0 which is the other standard for 4k60 needs 18 Gbit/s, so no, a combination with that will also not work.

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2 hours ago, Navid Jamali said:

No it cannot, the displayport 1.2 standard for 4k60 needs 17.28 Gbit/s and the rx 580 8gb has a maximum throughput of 42.88 Gbit/s for all ports combined.

Where is this documented?

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9 minutes ago, ryao said:

Where is this documented?

https://www.amd.com/en/products/graphics/radeon-rx-580

Under 'specifications' it lists the Peak Pixel Fill-Rate, which is the complete overall throughput of the gpu

https://www.hdmi.org/manufacturer/hdmi_2_0/hdmi_2_0_faq.aspx

Under 'What’s new in HDMI 2.0?' it lists the specifications and in there it lists that 4k60 is the highest supported under its 18 Gbit/s bandwidth

http://www.vesa.org/wp-content/uploads/2011/01/ICCE-Presentation-on-VESA-DisplayPort.pdf

A fun read. TL;DR the data bandwith is 17.28 Gbit/s and the max resolution is 4k60

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  • 4 months later...

This thread keeps showing up on search engines so I thought I'd add a couple quick corrections:
1. 17.28gbps is the bandwidth limitation of a single DisplayPort 1.2 link: the most you'll be able to get through a single cable. It's not the amount of bandwidth required for 4k60. If you have a GPU with 3xDP then chances are you have 3 links, so you have 51.84gbps.
2. It's 12.54gbps for 4k60.
3. The RX580 uses DisplayPort 1.4 which is 25.92gbps per link, but that needs a verified cable if you want more than 17.28gbps. This brings our total link bandwidth up to 77.76gbps if we have three ports. On top of that DP1.4 allows you to combine DSC with 4:2:2 which allows roughly 120gbps per link, or a whopping 360gbps if you have three ports. This is enough for three 8k monitors all running at 144hz*
4. The peak pixel fill rate of the GPU is measured in pixel/s, where as the DisplayPort bandwidth is measured in bit/s. If we assume 32 bits per pixel then this means the RX580 can output a theoretical 1372gbps. DisplayPort isn't going to approach even near to this limit. It would be pretty painful if the peak pixel rate of the GPU was actually 42.88gbps because internally blitting would annihilate performance.
5. Arctic Islands (RX 500 series) can output up to 6x5k60 monitors.
6. Even if the GPU was limited to only 42.88gbps, 4k30 is only 6gbps and the OP said they're not using it for gaming so they could fall back onto that.

* The RX580 won't actually let you run three 8k monitors at 144hz, as amazing as that would be.

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