There is now question as to whether all, or only some, of the latest AMD graphics cards will support mixed rotation with Eyefinity.
R9 285 (GCN 1.2) is tested working. I expected all newer AMD cards to support PLP. I had this impression because I remember Skip was told by AMD rep that their future cards would include this same PLP modification.
But suiken said he didn't think it so likely. "Unless that hardware has been added to the cards, I don't see any of the rebrands with GCN 1.1 or less having PLP support, although I don't know for sure." Said here: http://www.wsgf.org/forums/viewtopic.php?f=66&t=29065
His statement worried me. Seemed likely correct that GCN version matters for PLP. But we don't know for sure, AMD has said nothing clear.
Research & Proof (ongoing):
1. Scary blurb that ties GCN to PLP. It seems to confirm exactly what suiken said.
"The AMD Radeon™ R9 285 graphics card is loaded with the latest from Graphics Core Next (GCN) Architecture, including mixed screen resolution and orientation for AMD Eyefinity..."
http://www.overclockers.co.uk/LP/amd-tonga.php
2. If GCN version is required for PLP (GCN 1.2+):
- these cards will allow PLP: Fury, Fury X, Fury X2, R9 Nano (all GCN 1.2). R9 380 (GCN 1.2 too, but using different chipset codename).
- these cards may not allow PLP: R9 390, R9 390X, R7 360 (all GCN 1.1). R7 370 (GCN 1.0).
- maybe missed odd junk, it's all here:
https://en.wikipedia.org/wiki/AMD_Radeon_Rx_300_series
https://en.wikipedia.org/wiki/AMD_Radeon_Rx_200_series
3. Club3d has been requested to test the R9 390 for mixed rotation support. The card is among the most likely to fail PLP (& a good card, damn).
Club3d was the first online entity to prove that R9 285 had PLP support. There is a good chance they will have interest in this new request.
Will update when news. If you have ideas/news on this issue, share it...
(COD Ghosts 2013, manual PLP)
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