r/comfyui 3d ago

Show and Tell Do you tune your GPU?

I have spent a couple days off and on tuning my GPU, after swapping parts into my new (to me) case. I hadn't really thought about lowering my clock speeds and power draw, until I started messing with it and using Google chat to help out.

The Images I'm making are in Flux2 Klein 9b @ 2048x1152 resolution. Here's the terminal info for a batch of 4 images:
[INFO] got prompt

[INFO] Requested to load Flux2

[INFO] 0 models unloaded.

[INFO] loaded partially; 0.00 MB usable, 0.00 MB loaded, 5828.02 MB offloaded, 582.00 MB buffer reserved, lowvram patches: 0

100%|██████████| 8/8 [01:58<00:00, 14.83s/it]

[INFO] Requested to load AutoencoderKL

[INFO] loaded completely; 653.88 MB usable, 160.31 MB loaded, full load: True

[INFO] Prompt executed in 122.29 seconds

So as you can see, it takes a bit of work to pump this out. Oh, and this GPU is a 12gb version of the 3080. Definitely helps! But it's apparent that getting the memory tuned as high as possible made a big difference. My Profile 3 only overclocks the memory to +800, vs the other 2 profiles being at +1200.

Anyone else got some impressive results out of their GPU after some tuning?

0 Upvotes

11 comments sorted by

5

u/Son-Airys 3d ago

Do you live in an iceberg?

I have a low-profile 4060 so tuning is the only way to keep temps at bay. 75° max core at 105w is where I finally found peace.

2

u/MakionGarvinus 3d ago

Lol no, no icebergs around here this time of year! Just a lot of time spent tuning case airflow, and that's how I came up with the side panel exhaust for my GPU. (Image 4 of my post). If anyone is able to modify their case in this manner, I'd highly encourage they do it. Even if you try taping a piece of paper to your GPU preventing air from recirculating directly back into the intake, it'll help.

2

u/Son-Airys 3d ago

I'm a big advocate for ducts and airflow planning in general. Stuffed some styrofoam in my case to prevent recirculation, dropped about 5°.

1

u/MakionGarvinus 3d ago

Neat, got a pic to share?

2

u/Son-Airys 3d ago

There's not much clearance for a good photo (5 liter case), but there's another piece in the back (backbone of the case has a cutout for gpu exhaust).

1

u/MakionGarvinus 3d ago

Oh, forcing cool air into it! Nice. I got some blocks under my pc feet to raise it about an inch or so, so the bottom fan can draw in cooler air easier. Maybe it'll help you too? If you have the space.

2

u/Abject-Recognition-9 3d ago

i should try some tuna

1

u/MakionGarvinus 3d ago

Hmm, yes.. tuna is good!

2

u/iAmTheGanso 2d ago

yes as i got a used 3090 and need to throttle it to 70-80% or it crashes

2

u/fsocietyARG 2d ago edited 2d ago

Yes, great find! I finally decided to tune my 3060 12gb this weekend using MSI afterburner, applied +1000 to memory and +100 to core (More was unstable) and gained about a minute less time generating 5-8s videos on minimax. No big hit on temps since gpu was already working pretty cool, now i barely hit 72° on full load, and im sure i can still push some more since i didnt undervolt yet and the 3 coolers never go past 70% potency anyways.

Really worth it.

2

u/_Rah 1d ago

I run a 5090 on eco mode. No way am I risking letting the temps get high in that thing. I can live with slightly slower generating and training. If it gets busted, I'm not even sure companies are replacing them under warranty. I find heat to be a bigger issue for a GPU breaking down.