rtx 4090 bottleneck 3950x Will my Amd 3950X bottleneck an RTX 4090?

[Fracteller]

Hi, 

Is there any way to be sure about this? Anyone have this combo?

 

I want to buy an RTX 4090 but I want to be sure to not be bottlenecked. 
 

USAGE: Work and productivity mainly, I play games from time to time like Star Citizen, Rocket League, LoL, Eve Online, Rust and Foxhole, I think even if there's a bottleneck it's ok, too powerful anyway)

 

Thanks

[191x7]

4K or 8K? Nope.

1440p, 1440p ultrawide - depends on the game, details, load, temperatures, ...

1080p or lower - a high bottleneck even with the strongest CPU-s on the market (5800X3D, Zen 4, Intel Alder).

[Fracteller]

9 minutes ago, 191x7 said:

4K or 8K? Nope.

1440p, 1440p ultrawide - depends on the game, details, load, temperatures, ...

1080p or lower - a high bottleneck even with the strongest CPU-s on the market (5800X3D, Zen 4, Intel Alder).

One 4K and two FullHD screens.

Sorry I forgot to mention that I'm not talking about games, but productivity apps like Blender and Houdini

[191x7]

23 minutes ago, Fracteller said:

One 4K and two FullHD screens.

Sorry I forgot to mention that I'm not talking about games, but productivity apps like Blender and Houdini

If you're talking about using NVENC and CUDA, Gameworks etc - the CPU shouldn't be a factor in that when the GPU is used.

[Fracteller]

1 minute ago, 191x7 said:

If you're talking about using NVENC and CUDA, Gameworks etc - the CPU shouldn't be a factor in that when the GPU is used.

Perfect, thank you for this information!

[podkall]

20 minutes ago, Fracteller said:

One 4K and two FullHD screens.

Sorry I forgot to mention that I'm not talking about games, but productivity apps like Blender and Houdini

That is a really fast CPU, why would you think that it would bottleneck a GPU?

 

It's faster than some i9 Intel CPUS.

[Fracteller]

7 minutes ago, podkall said:

That is a really fast CPU, why would you think that it would bottleneck a GPU?

 

It's faster than some i9 Intel CPUS.

Just making sure: Imagine yourself buying an rtx 4090 then realising that it is bottlenecked 

[podkall]

1 minute ago, Fracteller said:

Just making sure: Imagine yourself buying an rtx 4090 then realising that it is bottlenecked 

Yeah, I understand your caution, better safe than sorry.

[jaslion]

32 minutes ago, Fracteller said:

Just making sure: Imagine yourself buying an rtx 4090 then realising that it is bottlenecked 

You could use a athlon 2000ge and it wouldnt care whilst rendering. The gpu is doing the lifting here the cpu is just existing doing some maths n stuff.

 

Yes the 2000ge would slow down overall workflow and loading would take longer but the actual differencewouldnt even be big between it and a 3950x :p.

 

 

[Fracteller]

7 minutes ago, jaslion said:

You could use a athlon 2000ge and it wouldnt care whilst rendering. The gpu is doing the lifting here the cpu is just existing doing some maths n stuff.

 

Yes the 2000ge would slow down overall workflow and loading would take longer but the actual differencewouldnt even be big between it and a 3950x :p.

 

 

While searching for Bottleneck logic on the internet, all I can find is Games bottleneck, no one talking about productivity bottlenecks, now I understand why! 

I was worried but now i'm releaved 

[jaslion]

1 hour ago, Fracteller said:

While searching for Bottleneck logic on the internet, all I can find is Games bottleneck, no one talking about productivity bottlenecks, now I understand why! 

I was worried but now i'm releaved 

Games its quite simple to see what is holding you back.

 

Producticity is basically a unbeatable beast to determine and all you can really so is see what is currently the limiting factor which can be so many things that it requires a case by case test for each load and then needs adjustments accordingly.

 

 

[Deadpool2onBlu-Ray]

5 hours ago, Fracteller said:

Hi, 

Is there any way to be sure about this? Anyone have this combo?

 

I want to buy an RTX 4090 but I want to be sure to not be bottlenecked. 
 

Thanks

The 3950x is slow as molasses. Yes it will bottleneck. Even the 7950x bottlenecks the 4090, it's that powerful. I would just throw a 5800x3d in there and call it a day

[ewitte]

5 hours ago, 191x7 said:

4K or 8K? Nope.

1440p, 1440p ultrawide - depends on the game, details, load, temperatures, ...

1080p or lower - a high bottleneck even with the strongest CPU-s on the market (5800X3D, Zen 4, Intel Alder).

I've seen quite a few 4k benchmarks with a 4090 that show a CPU limitation even with the fastest CPU available.  It is still stupidly fast.

[MadPistol]

32 minutes ago, CHICKSLAYA said:

The 3950x is slow as molasses. Yes it will bottleneck. Even the 7950x bottlenecks the 4090, it's that powerful. I would just throw a 5800x3d in there and call it a day

Have to agree. If you're primarily doing gaming, the 5800x3D is a no-brainer companion to an RTX 4090.

[Fracteller]

17 minutes ago, MadPistol said:

Have to agree. If you're primarily doing gaming, the 5800x3D is a no-brainer companion to an RTX 4090.

Gaming is not my priority, Rocket League, Eve Online, Star Citizen, Rust and FoxHole are the only games I play from time to time (even if bottlenecked it doesn't matter) I will mostly work with it in Blender and Houdini

[MadPistol]

14 minutes ago, Fracteller said:

Gaming is not my priority, Rocket League, Eve Online, Star Citizen, Rust and FoxHole are the only games I play from time to time (even if bottlenecked it doesn't matter) I will mostly work with it in Blender and Houdini

Then your current CPU would be a better fit.

[QuantumSingularity]

There is a really simple solution - in addition to the $2000 you'll spend on a ridiculous GPU, spend ~$500-600 more and get a proper B550 mobo + 5800X3D and you will be back on track, frustrated with your GPU being the bottleneck again. If you are on a B450 mobo you can go straight to the CPU and spare the mobo money.

[Fracteller]

36 minutes ago, QuantumSingularity said:

There is a really simple solution - in addition to the $2000 you'll spend on a ridiculous GPU, spend ~$500-600 more and get a proper B550 mobo + 5800X3D and you will be back on track, frustrated with your GPU being the bottleneck again. If you are on a B450 mobo you can go straight to the CPU and spare the mobo money.

did you read my post?  the GPU is for work, time is money (if you know what it is). I can't spend 500$ to 600$ more for a mobo to upgrade a CPU that I will not use (Im not going to game with it)

[Fracteller]

37 minutes ago, QuantumSingularity said:

There is a really simple solution - in addition to the $2000 you'll spend on a ridiculous GPU, spend ~$500-600 more and get a proper B550 mobo + 5800X3D and you will be back on track, frustrated with your GPU being the bottleneck again. If you are on a B450 mobo you can go straight to the CPU and spare the mobo money.

 

Check the 4 first tests: This is part of my work, encoding/decoding etc etc. Like I said, i'm not going to game with it, spending more money isn't a solution.

[QuantumSingularity]

Usually when it's for work you should specify what kind of workload. It's confusing because the usual scenarios where one would think a 16-core CPU would become a bottleneck for the GPU are usually games. GPU intensive tasks like Blender and Houdini couldn't care less what CPU you put on them as long as it has the minimums required instruction sets. ON the opposite side stuff like Cinebench and 7-zip couldn't care less if you have a 4090 or integrated GPU.

[Fracteller]

12 minutes ago, QuantumSingularity said:

Usually when it's for work you should specify what kind of workload. It's confusing because the usual scenarios where one would think a 16-core CPU would become a bottleneck for the GPU are usually games. GPU intensive tasks like Blender and Houdini couldn't care less what CPU you put on them as long as it has the minimums required instruction sets. ON the opposite side stuff like Cinebench and 7-zip couldn't care less if you have a 4090 or integrated GPU.

Yes I specified it in the 3rd message (not in the main message) I'll edit it. 

 

I discovered that bottlenecks are mainly related to games, I never saw productivity bottlenecks because each part is doing it's stuff.

Thanks all o7

[Action_Johnson]

11 hours ago, Fracteller said:

Hi, 

Is there any way to be sure about this? Anyone have this combo?

 

I want to buy an RTX 4090 but I want to be sure to not be bottlenecked. 
 

USAGE: Work and productivity mainly, I play games from time to time like Star Citizen, Rocket League, LoL, Eve Online, Rust and Foxhole, I think even if there's a bottleneck it's ok, too powerful anyway)

 

Thanks

When you're doing a heavy workload on your existing system, keep task manager up, or use something like HWInfo to track what parts are being used, and by how much. You should be able to gauge on your own if you're good or not from that information. 

 

My office computer has a 5900X in it (I almost did a 3950) and when I'm making image previews in Capture One, the best core of the CPU is cranking. When I render JPEG's, all 24 threads of the CPU are used for compression, while the GPU (5700XT) is used for rendering.. I don't know if Houdini or Blender have similar uses of hardware. I've found that more than anything for my workloads, memory capacity and bandwidth are my bottlenecks. Like when I render TIFF's or JPEG's, the GPU 3D core is barely being used, but all 8GB of VRAM are utilized while the Compute 1 and Copy graphs in task manager under the GPU are being mostly utilized, barely making any measurable heat. 

 

If they weren't so damn expensive, I'd be using a Radeon 7 FOR SURE. 16GB of HBM2 would be a dream. 

[gammatsunami]

At 4k my 11700 has never gone over 10 percent usage 

[XPMaStER2002]

I can tell you all right now, I'm a streamer on twitch and I have a Ryzen 3900x and just bought a 4080. This GPU is fast enough for 1440p and overkill for 1080p. But if you use x264 encoding on your 3900x while gaming with lets say A Plague Tale - Requiem, you will bottleneck it and lose FPS so much so I can't hold 60fps in some areas. and if you don't stream with it depending on the game. you may not be able to max the GPU at 100% because the rest of the system will hold it back. Happy Gaming All!