That is assuming 1080p or maybe 2k at a pinch of course.
If you are talking multiple 4K or a VR headset all bets are off.
Not worrying about 4K 1080 is perfect.
Hi dear pilots and co-pilots. I am beginner in MFS2020 and I need your advice.
I have the G9 monitor, and I want to upgrade my gpu. Currently I have PowerColor RX 5700 and Ryzen 5 5600x. PSU of 650w.
Which GPU would you recommend for this G9?
I have limited space for gpu…maximum length of 26 cm.
I would say an rtx3070 or 2080ti should balance nicely or a similar powered AMD card which it looks like you already have. If you go for a 3080 or 90 you will probably need to lower LOD considerably or upgrade your cpu.
Thank you. 3080 or 3090 will not fit in my pc case. Looks like 3070 is the only model that still has a dual fan setup.
I have a 3080ti and it did not fit, so I just left the side of the case open (!) works for me.
This is just a quick fix. Leaving the side open destroys any airflow in your case. Proper airflow AND cool air is needed to efficiently dissipate heat. Don’t be surprised if your overall temps go up by just having the case side open.
You are absolutely right, however I’ve been running like this for a year now, with no discernible effect. Temps are good for me. But it’s not recommended for everyone as you say. Maybe I just got lucky?
I have a self modded case that is full mesh on both sides and that may as well be open, I still keep the fans running though even though I’ve never known them to blow hard. Temps are great on my 3800X not least that the wraith prism was planned as the stock cooler for the 5xxx’s.
If it works, go for it. From experience, if removing the side actually helps lower temps, it’s usually a sign of poor airflow to begin with. As long as you’re getting enough airflow through the case to remove the heat, it’s not really an issue.
Oversized graphics cards are a big part of why today’s cases are huge, some are so big they can badly restrict airflow in a traditional case. Careful thought and planning is needed.
Yes, and check your temps regularly
I managed to cram one of these Zotac 3070’s into a SG13 SFX case. They are two slot and shortish length wise but are higher than normal, so you do need a few cm of space above. Mine performs perfectly fine with the factory overclock, but will not overclock any further than what it comes with, at all, ever.
The new 40XX cards are due out soonish and may eventually offer some more compact options.
I just upgraded my PC from a 5700 XT to a RX 6800. My 5700 XT barely fit in my case so I had to make sure the new card was no larger. Also, be aware of your 650w power supply as many of the higher end cards are power hungry and require larger PS’s. I wanted to stay with an AMD GPU and the RX 6800 was the highest one I could go with that would work with my 650w power supply. Given all of these parameters, I just looked around at the various vendors RX 6800’s until I found one that was no larger than my RX 5700xt. I ended up with the Sapphire Pulse RX 6800 which is currently at a good price on Amazon. Works great with my Ryzen 5900x, 32gig memory, NVME and I am very happy.
Apologies for bringing this topic back again.
As mentioned earlier, my computer running Flight Simulator is a Mac Pro 7,1 using MS Windows 11 Pro for Workstations installed on a Samsung 980 SSD using the Sonnet M.2 4x4 PCIe card.
I upgraded it recently with:
- 28 core, 56 threads Intel Xeon W3275M 2.5ghz (max 4.4ghz), which was the top CPU available for it
- AMD Radeon Pro W6800X Duo 64GB graphics cards, the top graphics card it could be ordered with and now very rare
This card is basically two Radeon Pro W6800 GPUs on the same card, each with its own 32GB VRAM . There is a data link between them on the card (AMD Infinity Fabric Link).
It’s possible to add a second of these cards to the machine, basically giving you 4x W6800 GPUs with a total of 128GB VRAM (4x32GB DDR6). A bespoke connector is used to link them together. If you are thinking of doing this config, be warned that connector is bespoke to the W6800X Duo. The one for the regular W6800/W6900 will not work, they are different.
People have asked does it do anything in Flight Simulator?
I have re-installed the latest drivers from AMD which support this card and so far (just went into the Flight Sim main menu) I can see from the Windows task manager “GPU0” is doing nothing, just idling along while “GPU1” is clearly doing all the work.
So to get benefit the software would have to be written to support it (such as a lot of video editing software or 3D rendering software). In those cases it’s still very powerful.
I didn’t buy this card for Flight Sim use (it’s for work) but I was able to test this out at least.
I’ll try an actual flight soon just to check if there is anything I have missed.
Edit: It warms your room nicely. 
But probably not so great for your power usage.
Edit 2: I tried out in a flight and in VR mode everything runs smoothly with no stutters but the frame rates are the same as with a normal W6800X card, the extra GPU sits idle.
So there you go, that question is answered.
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To be expected and the reason SLI support was dropped by most software houses a couple of generations back … enthusiasts were constantly proving it slowed up performance.
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SLI is a bit of a deadend tech for gaming and seems unnecessary for machine learning, statistical number crunching and AI as you can just use multiple cards without SLI in those case. It seems pretty much only useful for video editing as you say,
Does AMD require you to enable SLI in the graphics drivers for gaming the way Nvidia does?
Possibly… If you have two separate cards you may also need this:
https://eshop.macsales.com/item/Apple/VCRA2667/
That’s the one I warned about - there are two different ones. The above is for the W6800X Duo, the other is for the W6800/W6900. And there is also an older one for the old Vega series cards which is different again and not compatible.
If you have just the one Duo then not necessary, it has this built in on the card.
On the applications that do support it, nothing needs to be done, it just works. Simple way to more performance, just throw more GPUs at it.
I’m still finding my way with the new card so learning what it can do. Also experienced some kernel panics so I’m hoping no faults with it. I took it out and re-seated the card back in again so fingers crossed.
Edit: AMD also has this to say on Crossfire:
https://www.amd.com/en/resources/support-articles/faqs/DH-018.html
I didn’t check that last night, I will check again today. One of the screenshots shows a card listed as “Radeon Pro Duo” so it might still be something to enable.
Edit: No crossfire settings are available for the single W6800X Duo.
Not that it’s much use for Flight Sim but it would have been nice:
4x W6800 Radeon Pro GPUs with 128GB VRAM total (4x 32GB).
I’ll try this in Flight Simulator just to double check if it does anything more than my previous testing now that I have all the GPUs and the link between them (that’s the connector across the front of them).
One thing for sure is that it generates a lot of heat. My cold home office is warmed nicely.
Edit: I have tested the above config to see what it does:
They show up as GPU 0 through to GPU 3 all with Link 0.
While performance is smooth in Flight Simulator and stutter free, there is no benefit in performance and this time only GPU1 was used. I could use the terrain detail at 200 or 400 with no change in frame rates.
So that’s the final definitive answer.
