Dual GPU Lossless scaling
Hello everyone,
I’ve been looking into using 2 gpus for lossless scaling for a couple days now and I’ve been trying to find more information on how much you can actually boost fps without any meaningful input lag.
I’m currently running most games at 80-110fps at 1440p on low-medium setting and I’ve heard a lot more about dual GPU setups being able to boost fps pretty decently.
Right now my current setup is as follows,
CPU: 5800x3D
GPU: 6950xt - Merc 319 SWFT
RAM: 32gb 3200mhz DDR4 - Vengance RGB Pro 4x8gb
Motherboard: MSI B550 Tomahawk (No WiFi)
Storage: 500gb in the 1st M.2 & 1000gb in the 2nd
PSU: Corsair RM1000x (2021)
Case: 275r
Plus I’m running a single 1440p 27” 240hz OLED monitor
From what I’ve seen, the ideal way to run dual GPU on AM4 is to use a motherboard with x8/x8 PCIE bandwidth configuration because main GPU - Renders game, sends info off to the 2nd GPU where frame generation happens without the increase in latency or decrease in performance. The reason that I’ve seen as to why x8/x8 is important is because it needs to send that info as quickly as possible. I’ve also heard that AMD is better at handling dual GPU setups, and if it’s possible running AMD^3 (GPU,GPU,CPU) is pretty ideal. If I have in some way misunderstood I’d appreciate if someone could explain it.
That being said, my motherboard when only 1 M.2 ssd is being used would split the PCIE bandwidth into
1st GPU: PCIE 4.0 x16 - x16 speed
2nd GPU: PCIE 3.0 x16 - x4 speed
But if a second M.2 is introduced the 2nd GPU drops to PCIE 3.0 x16 - x2 speed
My question is, if I wanted to run most games at medium-high settings at 1440p 180+hz how many issues could I run into, and or how expensive would it be? I’m very willing to drop my 500gb and load all its data onto my 1TB drive because they’re both the same speed, and actually I think my 1TB might be faster? Either way dropping 500gb is no issue. From what I’ve seen my biggest concern is my PCIE bandwidth distribution overall, it’s not x8/x8 it’s x16/x4 (I think), and how necessary having x8/x8 is doesn’t seem to be consistent across what I’ve looked up - some say it’s really important and some say it’s not crazy important. I’m fine with upgrading my motherboard, but I’m wondering if there’s a setting in bios that could force x16/x4 bandwidth. Also, looking at the b550 board with x8/x8, and the x470/x570 boards the price tag is… yikes.
Overall if someone could clarify my confusion that would be extremely helpful, I feel as though there isn’t crazy documentation for 1440p gameplay, or I’m just looking in the wrong places. I’ve heard crazy claims that some people get 240fps at 4k, and some people get an increase of like 10fps for modern games. For the people that have done dual GPU is it all that worth it? Or do you think it would be more wise to just buy a beefier GPU and sell the old one for a lower net loss?
Any help or advice is greatly appreciated!
Edit: I forgot to mention but I mainly play single player games, and very rarely play competitive shooters, at most I’ll play marvel rivals with a couple buddies. I also think it’s probably significant to mention that I do sometimes use VR, it’s very infrequent but I haven’t really seen any documentation with lsfg dual GPU setups running vr games but I’d assume they would work, but maybe there’s a huge vr issue I haven’t been able to find that’s documented.
Additionally, to my understanding LSFG, and by that logic Dual GPU LSFG only works in windowed mode.
u/I_Eat_Oranges2 — 4 days ago
▲ 4 r/pcmasterrace
How much does CPU performance actually matter?
Sorry if this is kind of a dumb question or I’m not realizing something super obvious, but I’ve been wanting to jump from the am4 platform to am5 for a while now and I’m not sure if it would actually matter. Looking at performance graphs yes obviously a higher end CPU does give more performance, but they usually use ultra high end GPU’s like 4090’s and 5090’s in the benchmark. I’m assuming this is just to get the most fair benchmark possible, but say I’d wanna upgrade my pc to get better performance in 1440p it looks like upgrading my GPU would be much more beneficial and cost effective. I’m probably thinking about this weirdly, especially since it’s been a while since I’ve actually done anything meaningful to my pc itself or really looked into the performance of newer graphics cards today.
Don’t flame me too hard
Current specs btw
CPU: 5800x3D
GPU: 6950xt
RAM: 32gb x4 3200mhz DDR4
Storage: 500gb & 1000gb M.2 NVME
Motherboard: Mag B550 Tomahawk (not the wifi version)
PSU: Corsair RM850x
1440p 240hz single monitor
u/I_Eat_Oranges2 — 9 days ago
A better chamber heater for the CC1 (kinda?)
I was looking at all the different chamber heaters for the Centauri Carbon, and I actually printed one: https://www.printables.com/model/1320401-centauri-carbon-heated-chamber-mod. However, my issue with it is that with my current setup it struggles to get to and stay at a consistent 50°C+ and usually hovers at 45-48. I’ve insulated the printer and that brought it up a couple degrees but overall I’m slightly disappointed with how it works.
I preordered the canvas system for the Centauri carbon, mainly because I’ve always wanted to try out support interfaces, and I know that the canvas system requires a lot of space for the 4 ptfe tubes that connect to the printer. I saw someone relocate the canvas system to the back which reduces its profile, however, you’d still have to add a taller riser to the printer which would increase the total area of air that would need to be heated. Even if Elegoo decides to give us the canvas lid for the Centauri carbon 1 it would still not fix the heating issue.
I’m away from home for a couple weeks so I can’t really make a detailed 3d model but I’m wondering since I noticed that most of the heaters used in other projects are only 100-200w. My question is how dumb would it be to either take a 110v 500w heating element (like this one: https://a.co/d/0d23O6Ur) and wire it to a fan to recirculate the air in the printer. The current heater I use has a wall plug that also has a temperature probe, which tracks the temp and and cuts power to the heater when it reaches a certain temperature, making the potential to overheat the chamber a non-issue.
That was my first idea, and I realize it’s probably extremely dangerous, and also kind of expensive knowing that ill need a fan, the heater, and a way to supply power to both while also not starting a fire. This leads me to my second idea, which is to use a 500w heater that a company already made (I was looking at this one: https://a.co/d/0fEhNgEB). However, all the 500w heaters I saw were way too big to put inside the Centauri carbon, the one I linked is about 2.6” in diameter so it wouldn’t fit, and even if it could the intake fan would be against bare metal.
My idea would be to take apart one of these 500w heaters and make a new chassis that would resemble this guys post https://www.reddit.com/r/ElegooCentauriCarbon/s/QANIEBr3Yy. In my mind this is less likely to blow up or catch fire because someone else made it. Amazon basics also has a 500w heater that I believe is ceramic, it’s also fat asf (I think like 3”+ on its smallest side) so I’d need to figure out if the internals are small enough for what I wanna do
A 3rd potential idea that I thought of as I was writing this was to use one of those mini 500w space heaters I mentioned earlier to blow hot air into the printer from the spool holder, I don’t really use the spool holder so I could remove the holder and that creates a pretty large hole. This idea doesn’t seem like the greatest thing in my opinion mainly because the heater isn’t in the system so you’ll lose a lot of heat from the tubing itself but it’s just a thought.
Sorry everyone for the long text, and if there are any grammatical mistakes it’s because I’m on a phone and not because I’m lazy and don’t re-read my paragraphs. If you have any suggestions at all or more information on wiring things that produce heat without blowing up in my face I would really appreciate it. I’ll probably make a post here in a month or so with a more detailed plan or I’ll give up and just buy the same heater I mentioned at the start and print a holder that keeps 2 of them together.
TL:DR My heater sucks, I’d like to have one that can more easily keep my chamber at 50°C-60°C without burning up.
u/I_Eat_Oranges2 — 11 days ago