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i7-9700K + ASUS Z390-A, which GPU's?

Joined
Jan 27, 2018
Messages
66
Motherboard
ASUS Prime Z390-A
CPU
i7-9700K
Graphics
RX 580
Mac
Mac mini
Mobile Phone
iOS
Basic config for now(without questions as for me):
  • DELL P2415Q
  • Intel Core i7-9700K
  • ASUS Prime Z390-A
  • HYPERX Fury White DDR4 3466MHz 16GB Kit 2x8GB XMP
  • SAMSUNG 860 EVO 512GB SSD
  • SEASONIC Focus Plus 850 Platinum (SSR-850PX)
  • SCYTHE Mugen 5 PCGH Edition (SCMG-5PCGH)

I want this be a dual boot machine, so here be windows and with some games. Mostly looking for the latest: Detroit Become Human and Metro Exodus.

My monitor is 3840x2160 and so requires a lot of GPU power, for Metro specially and even 2080ti is NOT enough for around 50-60FPS. My goal is to have at stable 50-60FPS at 4k at Ultra settings.

So I'm thinking that I definitely needed a 2 GPU's and because of that endless fight with Nvidia, sadly I have to use radeon cards.

Means, I need 2x GPUs in CrossFire to be able to get a comfort FPS in the latest games.
Along with that, I need my macOS, which is used for work - be flawless as before, no video glitches or any kind of problems..

So my choice for now is 2 x SAPPHIRE Radeon RX Vega 56 8GB HBM2 2048-bit Dual-X Pulse.(I just can buy it 2x for good price locally).

Can someone please comments this? Maybe my idea is wrong in some case? Or what is better to choose?
 

Jamesbond007

Moderator
Joined
May 21, 2011
Messages
4,617
Motherboard
Gigabyte Z270X-UD5
CPU
i7 7700K
Graphics
RX 580
Mac
Mac mini
Mobile Phone
iOS
Basic config for now(without questions as for me):
  • DELL P2415Q
  • Intel Core i7-9700K
  • ASUS Prime Z390-A
  • HYPERX Fury White DDR4 3466MHz 16GB Kit 2x8GB XMP
  • SAMSUNG 860 EVO 512GB SSD
  • SEASONIC Focus Plus 850 Platinum (SSR-850PX)
  • SCYTHE Mugen 5 PCGH Edition (SCMG-5PCGH)
I want this be a dual boot machine, so here be windows and with some games. Mostly looking for the latest: Detroit Become Human and Metro Exodus.

My monitor is 3840x2160 and so requires a lot of GPU power, for Metro specially and even 2080ti is NOT enough for around 50-60FPS. My goal is to have at stable 50-60FPS at 4k at Ultra settings.

So I'm thinking that I definitely needed a 2 GPU's and because of that endless fight with Nvidia, sadly I have to use radeon cards.

Means, I need 2x GPUs in CrossFire to be able to get a comfort FPS in the latest games.
Along with that, I need my macOS, which is used for work - be flawless as before, no video glitches or any kind of problems..

So my choice for now is 2 x SAPPHIRE Radeon RX Vega 56 8GB HBM2 2048-bit Dual-X Pulse.(I just can buy it 2x for good price locally).

Can someone please comments this? Maybe my idea is wrong in some case? Or what is better to choose?
2 Vega cards? Are you certain the games you want to play on your machine supports 2 cards working together? Because if not it may be a waste of money.

Also the general recommendation is to use a separate disk for a dual boot machine and so you should invest in a separate SSD for use with Windows.

If you want to play games at high settings you want perhaps you should consider building a separate computer using a powerful Nvidia card.
 
Joined
Mar 29, 2011
Messages
365
Motherboard
XPS 9360 2.9.0
CPU
i7-7500U
Graphics
HD 620 3200x1800
You could also consider an NVME SSD.

The dual AMD is alright, if that's what you want to have for Windows gaming. I've found no problems with multiple cards when using OpenCL programs - at least, none that real Macs don't also have the issue, i.e. poor program design. Other forms, like OpenGL, I don't have the experience to say. Apple is deprecating OpenGL on OS X anyway.

The worst that might happen is you can only use one of the cards for display output when in OS X, but I think that's unlikely. There used to be issues with boot time halts from running out of PCI resources, depending on how many slots are filled, on certain motherboards. But I think that got resolved in Clover.

There's no performance reason you can't have both OSes on the same drive, with multiple partitions. It just makes things generally more complicated when getting it set up, and when maintaining the setup.
 
Joined
Jan 27, 2018
Messages
66
Motherboard
ASUS Prime Z390-A
CPU
i7-9700K
Graphics
RX 580
Mac
Mac mini
Mobile Phone
iOS
Are you certain the games you want to play on your machine supports 2 cards working together? Because if not it may be a waste of money.
Most games support it, but some doing that not really successfully, but I prefer 1 GPU for all.. but no drivers for GTX..

Also the general recommendation is to use a separate disk for a dual boot machine and so you should invest in a separate SSD for use with Windows.
Yea, thanks for reminding this, all my previous builds were done on one hdd and that was a lot of surprises.
Currently I have working dual boot but it wasn’t simple to setup it at first.

If you want to play games at high settings you want perhaps you should consider building a separate computer using a powerful Nvidia card
More and more I read and thinking about all this, more I want Nvidia card.
You could also consider an NVME SSD.
I remember it was some problems with installing system on it? Patches required? I just want stable and easy setup, and average speed of apps running on SSD or NVME looks for me the same, only when copying big files NVME is the winner.
So SSD just always works, thats why I prefer it for now.
There used to be issues with boot time halts from running out of PCI resources, depending on how many slots are filled, on certain motherboards. But I think that got resolved in Clover.
More potential issues :) I see.. I will be using also a PCI Wi-Fi card.

There's no performance reason you can't have both OSes on the same drive, with multiple partitions. It just makes things generally more complicated when getting it set up, and when maintaining the setup.
Yep, it’s not so simple. So, I’ll add some SSD for windows, to make my life easier)
 
Joined
Jan 27, 2018
Messages
66
Motherboard
ASUS Prime Z390-A
CPU
i7-9700K
Graphics
RX 580
Mac
Mac mini
Mobile Phone
iOS
Also, what I’m thinking now: dual GPU.
Use some RX560-580 for macOS and like 2080ti for games on windows.

Here is the question how Mac will understand, which card is “main”?
Do you gave guys experience with such dual GPU Nvidia+Radeon in one machine? What can you say about that?
 
Joined
Mar 29, 2011
Messages
365
Motherboard
XPS 9360 2.9.0
CPU
i7-7500U
Graphics
HD 620 3200x1800
Mixed GPU platforms: I tried it once. The drivers will probably work, but applications do not like it!

On the NVME, if you get one of the ones that can be 4k formatted and use a recent OS build, then no problem - it's native. The 4k format process is a quick one-time thing. I like to do it this way, now, especially on laptops.
 
Joined
Jan 27, 2018
Messages
66
Motherboard
ASUS Prime Z390-A
CPU
i7-9700K
Graphics
RX 580
Mac
Mac mini
Mobile Phone
iOS
But if on windows I’ll install only Nvidia drivers?

Also, I’m thinking about wiring,
And so which card will be default.
How can I manage that ?:confused:
 
Joined
Mar 29, 2011
Messages
365
Motherboard
XPS 9360 2.9.0
CPU
i7-7500U
Graphics
HD 620 3200x1800
Yeah I was in a similar situation once. It gets weird and complicated. An application in OS X might look at certain info it can find in ioreg and assume that's your graphics card, or at least one that it can use, even though it doesn't have a driver attached. Because on a Mac this is a safe assumption that it will always be a usable GPU.
 
Joined
Jan 27, 2018
Messages
66
Motherboard
ASUS Prime Z390-A
CPU
i7-9700K
Graphics
RX 580
Mac
Mac mini
Mobile Phone
iOS
I see.. for now I decided to start just from RX580, only one card and later, planning to add some 2080ti.

Ps. Still believe to get Nvidia drivers! Oh dear..
 
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