CPU/Mobo Will I benefit with a PCI-E 4 Mobo?

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scott1391990

scott1391990

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I am a 3D architectural visualiser and work on 3DS Max and Unreal Engine. On Unreal Engine I use GPU for rendering/baking because it's much faster than the CPU because of the CUDA cores on GPU.
Before the RTX 3070 TI, I had a GTX 1650 Super and it was also good in rendering but the only problem was the 4 gigs of VRAM.
SO I upgraded to a RTX 3070 TI to double the VRAM and get a lot more CUDA cores.
I have it installed on an AMD B-350 motherboard with Ryzen 7 1700. I thought that upgrading to 3070 TI, the renders would be much faster than the GTX 1650 Super but it's not the case.

And I have no other system to check if it's my Mobo or CPU bottlenecking the GPU.

Does anyone here have any experience with PCI-E 3 and PCI-E 4?
Would it help to upgrade the Mobo alone or should I upgrade the CPU as well?
 
As your main work is rendering and unreal engine , I don't think that pci e gen 3 or gen 4 would have a dramatic impact on the type of work you are mentioning ..your work mostly depends on GPU workload , hence a better memory with higher clock frequency would be a better option .
Can assure you one thing that both for 3ds max and unreal the cpu rendering is more accurate and GPU rendering is fast , also Currently, Unreal Engine utilizes the video card solely to display the graphics on the screen. Many applications in other fields have begun using the GPU for other tasks as well, but this has not yet been implemented in the Unreal Editor. Because of this, a faster video card will give you a higher FPS in the viewport or in a stand-alone game, but likely will not improve your productivity in other tasks.
 
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scott1391990 said:
I am a 3D architectural visualiser and work on 3DS Max and Unreal Engine. On Unreal Engine I use GPU for rendering/baking because it's much faster than the CPU because of the CUDA cores on GPU.
Before the RTX 3070 TI, I had a GTX 1650 Super and it was also good in rendering but the only problem was the 4 gigs of VRAM.
SO I upgraded to a RTX 3070 TI to double the VRAM and get a lot more CUDA cores.
I have it installed on an AMD B-350 motherboard with Ryzen 7 1700. I thought that upgrading to 3070 TI, the renders would be much faster than the GTX 1650 Super but it's not the case.

And I have no other system to check if it's my Mobo or CPU bottlenecking the GPU.

Does anyone here have any experience with PCI-E 3 and PCI-E 4?
Would it help to upgrade the Mobo alone or should I upgrade the CPU as well?
Click to expand...
I want to be a bit selfish and ask if you can help me with a small animation for personal use. NOTE I WON'T PAY FOR IT :P

and to answer, no it won't matter that much. But if the price difference is not much, get the latest stuff.
 
Ankit2306 said:
As your main work is rendering and unreal engine , I don't think that pci e gen 3 or gen 4 would have a dramatic impact on the type of work you are mentioning ..your work mostly depends on GPU workload , hence a better memory with higher clock frequency would be a better option .
Can assure you one thing that both for 3ds max and unreal the cpu rendering is more accurate and GPU rendering is fast , also Currently, Unreal Engine utilizes the video card solely to display the graphics on the screen. Many applications in other fields have begun using the GPU for other tasks as well, but this has not yet been implemented in the Unreal Editor. Because of this, a faster video card will give you a higher FPS in the viewport or in a stand-alone game, but likely will not improve your productivity in other tasks.
Click to expand...
Thanks for taking the time to reply and yes you are right about the Unreal Editor getting frame boost but there is one thing that you do not know for some reason. UE 4.26 has implemented GPU rendering which is much much faster than the CPU and giving better results as well. Earlier, a sole developer had released a plugin to render/bake using GPU and it was very popular and still is. Even I use his plugin till today because of the speed and quality. And after seeing it's quality, Epic Games finally hired that developer and implemented his plugin into the engine last year. Long story short, UE does utilise GPU for rendering and baking.
But I just don't know if my 3070 TI is performing at it's best or being bottlenecked by CPU or motherboard because I haven't seen much improvement in rendering times when I upgraded from 1650 Super
nRiTeCh said:
No you wont.
www.pugetsystems.com

Impact of GPU PCI-e Bandwidth on Content Creation Performance

Installing add-in cards—like capture cards—can limit PCI-e bandwidth to the GPU. Does the reduction of PCI-e bandwidth harm performance in content-creation?
www.pugetsystems.com www.pugetsystems.com
Click to expand...
Not sure if I should consider that article or not because they are benchmarking video editors and photoshop whereas I am specifically looking for gains regarding Unreal Engine rendering/baking.
princeoo7 said:
I want to be a bit selfish and ask if you can help me with a small animation for personal use. NOTE I WON'T PAY FOR IT :p

and to answer, no it won't matter that much. But if the price difference is not much, get the latest stuff.
Click to expand...
No, I am not upgrading right now because my current system is doing well enough. Just was wondering if it really is bottlenecking my GPU. Also, I think I would upgrade when the next AMD processes are out along with the new socket and DDR5 support so I can be future proof. Can't be upgrading everytime when something new comes out.

Anyways, PM me about the animation project you are referring to. Let's see if I have got the skills to help you or not
 
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scott1391990 said:
Would it help to upgrade the Mobo alone or should I upgrade the CPU as well?
Click to expand...

No, PCIE 4 won't help you.

Ram frequency for eg. 3200Mhz may help a bit (2-5%) if there is cpu bottleneck, I hope you are not on 2400Mhz :D

Things have evolved with Intel 12th gen, even i3 12100f will have better perf than 1700 in your usecase.
 
That is strange. Maybe try cleaning out previous drivers and reinstalling the new ones again?

I saw a boost of almost 10-15x moving from 1060 3gb to 2070 8gb. In Blender (Cycles and Luxcore). In realtime and final rendering. Combined with Nvidia Optix, renders are much faster now.

Yours 1650 -> 3070 should be even a more dramatic jump in GPU related workloads.

I doubt you would benefit greatly from switching to PCIe 4, but of course it is something you can try. R1700 is still not yet weak enough to bottleneck that severely. But before going that route I'd suggest to re-install windows or try your GPU on someone else's system if possible. I'm willing to bet this is some software related issue. The hardware jump is too big.
 
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agentmilo said:
That is strange. Maybe try cleaning out previous drivers and reinstalling the new ones again?

I saw a boost of almost 10-15x moving from 1060 3gb to 2070 8gb. In Blender (Cycles and Luxcore). In realtime and final rendering. Combined with Nvidia Optix, renders are much faster now.

Yours 1650 -> 3070 should be even a more dramatic jump in GPU related workloads.

I doubt you would benefit greatly from switching to PCIe 4, but of course it is something you can try. R1700 is still not yet weak enough to bottleneck that severely. But before going that route I'd suggest to re-install windows or try your GPU on someone else's system if possible. I'm willing to bet this is some software related issue. The hardware jump is too big.
Click to expand...
Thanks man. Only heard about Optix this week but didn't bother checking until you mentioned it and as it turns out, Unreal Engine doesn't support it and that explains why I don't know about it.

And checking the GPU on someone else's computer is not possible because I have shifted to a new place and I do not know anyone here that good who would allow me to open their system.

The drivers and windows are not a problem as I installed windows when I installed this GPU along with an upgrade to the SSD as well.

What is your PC config?
I have Blender installed on my system but don't know it yet. Started learning the basics but due to other works had to leave it in the middle.
 
Optix is for rendering, being a ray tracing engine. It is being implemented in UE though. Optix + Nvidia Denoising is a killer combo right now, with 3xxx cards. The speed jump in my 1060 alone is insane.

My current work rig is a 2700x + 32gb + 1060 3gb. I use a friend's 2070 and 1080ti for rendering.

Have you tried rendering the Blender classroom scene with GPU and Optix enabled? Just to see if you don't have any hardware issues and its only a software issue. You should be seeing close to realtime.
 
agentmilo said:
Optix is for rendering, being a ray tracing engine. It is being implemented in UE though. Optix + Nvidia Denoising is a killer combo right now, with 3xxx cards. The speed jump in my 1060 alone is insane.

My current work rig is a 2700x + 32gb + 1060 3gb. I use a friend's 2070 and 1080ti for rendering.

Have you tried rendering the Blender classroom scene with GPU and Optix enabled? Just to see if you don't have any hardware issues and its only a software issue. You should be seeing close to realtime.
Click to expand...
Sorry for late reply. Tend to forget about TE due to work. I will try to give classroom scene a try on weekend.
Do you remember how much time it took on your 2070?
 
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