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Hey all

 

Ive been looking through the forums but didn’t find anything specific to my use case so thought I’d start a new thread. 
 

Currently have a 5800X3D and thinking of getting the 5090. I’m conscious the CPU might bottleneck the GPU but here’s the part I’m struggling with finding out. I use the Samsung G9 OLED which is a weird resolution and doesn’t show up on the “bottleneck calculators” online. It’s 5120 X 1440 so not quite 4K but more than 1440p. All the checkers I’ve seen are saying it will bottleneck at 1440p but not so much at 4K. 
 

Is anyone way smarter than me and can tell me if I’ll have an issue? And if so why?  
 

I can upgrade to AM5 if I need to, but I’d rather save the money if I can. 

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Bottleneck calculators are garbage. Don't use them.

There will always be a bottleneck, a PC without a bottleneck would have unlimited performance, which is physically not possible.

 

The machine will work, but you'll probably have to upgrade to AM5 to get the most out of a 5090.

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At 4K I'd be surprised if the 5800X3D would be a bottleneck in games like CP77 without software trickery like DLSS and Frame Generation. You can always also do supersampling if your FPS is in excess of what you need it to be.

 

At 1440p potentially could be leaving some performance on the table. I think that was already the case with the 4090 in a few games.

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9 minutes ago, Average Nerd said:

Bottleneck calculators are garbage. Don't use them.

There will always be a bottleneck, a PC without a bottleneck would have unlimited performance, which is physically not possible.

 

The machine will work, but you'll probably have to upgrade to AM5 to get the most out of a 5090.


In your opinion would it be stupid to keep the AM4 then? Will it likely be leaving a bunch of performance on the table? Or negligible. 

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3 minutes ago, venomtail said:

At 4K I'd be surprised if the 5800X3D would be a bottleneck in games like CP77 without software trickery like DLSS and Frame Generation. You can always also do supersampling if your FPS is in excess of what you need it to be.

 

At 1440p potentially could be leaving some performance on the table. I think that was already the case with the 4090 in a few games.


with my monitor being closer to 4K than 1440p it shouldn’t be as much wasted then right? 

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17 minutes ago, msd0s said:

Hey all

 

Ive been looking through the forums but didn’t find anything specific to my use case so thought I’d start a new thread. 
 

Currently have a 5800X3D and thinking of getting the 5090. I’m conscious the CPU might bottleneck the GPU but here’s the part I’m struggling with finding out. I use the Samsung G9 OLED which is a weird resolution and doesn’t show up on the “bottleneck calculators” online. It’s 5120 X 1440 so not quite 4K but more than 1440p. All the checkers I’ve seen are saying it will bottleneck at 1440p but not so much at 4K. 
 

Is anyone way smarter than me and can tell me if I’ll have an issue? And if so why?  
 

I can upgrade to AM5 if I need to, but I’d rather save the money if I can. 

You can check this. I'll give you a rough idea. This is with 4090.

relative-performance-games-2560-1440.png

https://www.techpowerup.com/review/amd-ryzen-7-9800x3d/19.html

 

relative-performance-games-38410-2160.pn

https://www.techpowerup.com/review/amd-ryzen-7-9800x3d/20.html

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The 5800X3D is still an excellent gaming CPU (even now one of the best money can buy, certainly the best on AM4). For most games bottlenecking should be of no real concern even at lower resolutions.

3 minutes ago, msd0s said:

In your opinion would it be stupid to keep the AM4 then? Will it likely be leaving a bunch of performance on the table? Or negligible. 

I wouldn't worry too much about it unless you have money burning a hole in your pocket to go get a 9800X3D or better, The 5800X3D is plenty fast.

 

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Very interesting listening to the Digital Foundry podcast yesterday. Alex there, as we know, knows his stuff and said he would even be remotely surprised if Nvidia officially said Ryzen 7000 or Intel 13th gen are the minimum supported for 5090, even for 4K after their hands on. It wouldn’t make any sense to spend $2k on a GPU and expect a 4+ year old system to support it anyway. 

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15 minutes ago, DoctorNick said:

So it’s somewhere between 2.1% and 8.3% but likely more towards the 2.1% on the 4090. That’s not terrible then I guess. 

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1 minute ago, GuiltySpark_ said:

Very interesting listening to the Digital Foundry podcast yesterday. Alex there, as we know, knows his stuff and said he would even be remotely surprised if Nvidia officially said Ryzen 7000 or Intel 13th gen are the minimum supported for 5090, even for 4K after their hands on. It wouldn’t make any sense to spend $2k on a GPU and expect a 4+ year old system to support it anyway. 

Damn , so you think I’d be stupid to keep the CPU I have if I bought the 5090? Obviously based on some assumptions from reputable sources. 

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26 minutes ago, msd0s said:


with my monitor being closer to 4K than 1440p it shouldn’t be as much wasted then right? 

technically its 5k, and the resolution isn't really relevant anyway it'll do fine in some games and not so in others,  so it's the games that are more relevant as always.

 

also, this will come as a shock to you, but your pc will always have a "bottleneck", i would also stay away from "bottleneck calculators"...  important is if you're satisfied with performance or not.

 

of course you already have almost the best hardware, so upgrading would only see limited gains anyway. games are still largely unoptimized mess, doesn't really matter what hardware you have lol. good luck in your endeavors though and i hope you can beat the windmill (eventually)! 🙂

 

 

 

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1 hour ago, msd0s said:


In your opinion would it be stupid to keep the AM4 then? Will it likely be leaving a bunch of performance on the table? Or negligible. 

No just keep it. You are running a HIGH resolution and flat out a 4090 is not a 4k high settings, high refresh NATIVE res gaming gpu and since a 5090 will probably just be 25% better or so it's not gonna do heaps better. So a 5800x3d is totally fine.

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1 hour ago, msd0s said:

Hey all

 

Ive been looking through the forums but didn’t find anything specific to my use case so thought I’d start a new thread. 
 

Currently have a 5800X3D and thinking of getting the 5090. I’m conscious the CPU might bottleneck the GPU but here’s the part I’m struggling with finding out. I use the Samsung G9 OLED which is a weird resolution and doesn’t show up on the “bottleneck calculators” online. It’s 5120 X 1440 so not quite 4K but more than 1440p. All the checkers I’ve seen are saying it will bottleneck at 1440p but not so much at 4K. 
 

Is anyone way smarter than me and can tell me if I’ll have an issue? And if so why?  
 

I can upgrade to AM5 if I need to, but I’d rather save the money if I can. 

Your res is 7.4M pixels to 8.3 on 4K (and only 3.7M on standard 1440p, half of yours)

So you can safely use 4K benchmarks to assess what it'll give on your config (with a 10% margin..)

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