Notifications
Clear all

2018 mini with Ultrafine 5k  

 of  2
  RSS

joevt
(@joevt)
Noble Member
Joined: 3 years ago
 
Posted by: @nick_kay

@joevt

Thanks.  Don't mean to de-rail this thread was just really interested in this topic and this info is kind of hard to find.

I ended up getting an MSI 34" 5K/2K monitor.  It says DP 1.4 on the box, but it somehow achieves this resolution at 10bpc at 60hz.

What do you mean "somehow"? This is not magic. It's math. 5120x2160 (5K2K 21:9 WUHD) is fewer pixels than 5120x2880 (5K3K 16:9) so it can do 10bpc at 60Hz with HBR3 without DSC, while 5120x2880 can only do 8bpc at 60Hz with the same connection and requires dual HBR2 for 10bpc at 60Hz.

5K (1440p 32:9 QHDx2 or WQHDx2) is fewer pixels than 4K so it can do 10bpc at 60Hz with just HBR2.

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


ReplyQuote
Nick Kay
(@nick_kay)
Eminent Member
Joined: 2 months ago
 

@joevt, yeah I didn’t mean to imply it was magic, but I am more or less still confused by the display port versioning, as it seems to have nothing to do with the actual link speed and or features that the specific devices support.  VESA really failed in that regard IMHO.  The DisplayPort Wikipedia page says that 1.3 (with a total of 25.92 Gb/s after 8b10b encoding) can do 5K (true 5K 16:9 5120 × 2880) at 60Hz at 30-bit/px RGB color.  I’m assuming that means 10-bit 4:4:4.  So I’m just a little confused about that still.  In the chart below, in the “

 

Resolution and refresh frequency limits

” section of the Wiki article, it says something different, it says that 5K at 60Hz is limited to 8-bit color at HBR3.

 

This post was modified 1 month ago

2018 i7 Mac Mini | Sonnet eGFX Breakaway Box 550 | XFX 5700 XT 8GB


ReplyQuote
joevt
(@joevt)
Noble Member
Joined: 3 years ago
 

@nick_kay, you mean 25.92 Gbps. DisplayPort 1.3 and 1.4 have the same HBR3 max link rate. The wikipedia has a mistake 5120x2880x60x30 > 25.92 Gbps so it should say 24 bpp. Later in the document it says 24 bit. And later (for HDR video), it says that HBR3 cannot do 30 bit/px without DSC or 4:2:2.

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


Nick Kay liked
ReplyQuote
Nick Kay
(@nick_kay)
Eminent Member
Joined: 2 months ago
 

@joevt, Yeah, that Wiki page is just a mess.  

 

2018 i7 Mac Mini | Sonnet eGFX Breakaway Box 550 | XFX 5700 XT 8GB


ReplyQuote
 of  2