Manufactured 4090 48gb AMA
Posted by koalfied-coder@reddit | LocalLLaMA | View on Reddit | 82 comments
Hello all I have run a Galax manufactured 48gb card for about a year now with flawless results and CUDA up to 13.0. These particular cards are SKU cards not resolders thankfully. The resolders I had were pure garbage. But maybe I got bad batch. Anyhows these cards rock. I'll post t/s asap as its just now coming off rental. Anyhow AMA I love talking cards.
connorharding098@reddit
I'm not sure if I can advertise on here, but I have a business that sells these modified 4090s 48GB, as well as modified 2080tis that have 22GB Vram.
Unfortunately, we only ship from and to UK and Canada at the moment.
getting_serious@reddit
Are you the UK seller that sells individual RAM chips on ebay? I was very surprised to discover that.
How is general compatibility with these? Can I run the normal NVidia driver in windows and everything magically works? Or do I have to make amends in day-to-day usage?
GuestUsernames@reddit
Have you found a seller if the VRAM?
getting_serious@reddit
AliExpress has the individual chips, and there is a whole lot on eBay.co.uk.
I got myself a set of AMD MI50, shortly before the latest price surge. As far as speculative investments go, this one has performed pretty stellar.
connorharding098@reddit
I sell, ready to go plug and play GPUs.
All official drivers work normally. Testes on windows and linux. No special workarounds are needed. Even power consumption is pretty much the same.
In addition, the GPUs cooling has been upgraded to blower style cooling, which is great for people wanting to buy a bunch to chuck in a monster server.
Everything works as per - even gaming. Gifted my nephew a 2080ti22gb for his setup with the deal that I teach him how to use gen AI in exchange for a better gaming experience, lol.
koalfied-coder@reddit (OP)
Hit my dms for the 2080tis seems cool
az226@reddit
Can you say more about it not being a re-soldered one?
MelodicRecognition7@reddit
this is a lie, all 4090 48GB have resoldered chips.
koalfied-coder@reddit (OP)
Thank you for this information. as a response I am no longer recommending these cards. I have had good experiences but still. Not worth ones character. Thank you.
koalfied-coder@reddit (OP)
I was told these ones were not resolders. I have had the others in the all black case that I could easily tell were resolders. I could be wrong tho no issue.
GenLabsAI@reddit
How much did they cost?
koalfied-coder@reddit (OP)
21000 cny or about 3k. Lil expensive but fitting a 70b model in one card is priceless
GenLabsAI@reddit
Do you think 2x 4090 48GB would be better than 3x 5090. Only $1000 extra.
SillyLilBear@reddit
You are better off just getting a 6000 Pro
GenLabsAI@reddit
well. yes. If you pay the extra 3k
SillyLilBear@reddit
this was reference to a comment about buying two of these or 3 5090 which will exceed the price of a 6000 pro and cost a lot more in electricity,
GenLabsAI@reddit
Yes, but 3x 5090 is 7k. 6000 pro is 10k. I'm not sure about electricity though
SillyLilBear@reddit
Yet the comment was 2x4090 or 3x5090 not 3090 and the power is a lot worse and will add up very fast the 6000 Pro is also only $8300.
GenLabsAI@reddit
2x4090 48GB is (according to OP) $6k. 3x 3090 is $6.9k. 6000 pro is 10k from retail, (or 8.3k whatever). It's still more expensive than 3x 5090
SillyLilBear@reddit
Not sure why you keep bringing up 3090 they weren’t even in the conversation I replied to.
GenLabsAI@reddit
Sorry that was a typo
tengo_harambe@reddit
RTX 6000 Pro can be easily had for $7500, tax free, brand new. Just request quotes from all the official sellers.
GenLabsAI@reddit
Didn't know about that. But anyways I was talking retail prices.
What do you mean by "aren't allowed" to sell that low?
koalfied-coder@reddit (OP)
At this time I would agree if you have the spend.
SillyLilBear@reddit
If you are looking at 2x 4090 48G or 3 5090 as the comment I replied to says, then it's actually cheaper.
koalfied-coder@reddit (OP)
oh my bad sorry lost track of the comments. Its a tough call if you can spread across cards 5090 better if not you have the get a 48gb card.
koalfied-coder@reddit (OP)
Not if you can spread your workload across cards. I needed 70b on one card so no other options besides a6000 ada or similar.
GenLabsAI@reddit
Cool. Where did you get these? Like did you go to China or buy them online from where?
koalfied-coder@reddit (OP)
I met an American importer I work with for cards. Sadly no website with the cards outside of stand import business. if you would like details feel free to dm
MelodicRecognition7@reddit
the serial number suggests that the card was manufactured in March 2025 so the OP could not have used it for "about a year", and all these "please send DM" looks like an effort to get a cut from reselling chinese cards.
koalfied-coder@reddit (OP)
Your correct that card pictured is my most recent. As for the pictures I agree I had one that looked exactly the same including case yet had worse performance and was not as clean. I also agree I'm not appropriate and it's not worth it. There is a nice guy from Canada selling here that seems legit if anyone wants.
profesorgamin@reddit
This is clearly an ad.
koalfied-coder@reddit (OP)
Naw just bored. There is a guy selling from CA in here that I would prob recommend over the one I have. Much closer haha.
koalfied-coder@reddit (OP)
This is most recent card I have an older one actively running and renting sir. Also I dont get a cut I get a discount on more 48gb 4090s. For transparency
ubrtnk@reddit
Do you have a link/recommendation as to where to buy?
koalfied-coder@reddit (OP)
Check out the guys above from Canada as well seems nice
koalfied-coder@reddit (OP)
hit my dms and ill share
itsmebcc@reddit
I would like a 6 pack please!
koalfied-coder@reddit (OP)
Scroll up to the guy from Canada he seems to have stock close.
koalfied-coder@reddit (OP)
hit my dms if looking to get some. I still have the contact
itsmebcc@reddit
Sent --
Has it been under constant workload for that last year?
koalfied-coder@reddit (OP)
Yep more or less for both training and inference
sedition666@reddit
What base system you running? Lenovo threadripper?
koalfied-coder@reddit (OP)
Yes sir Lenovo p620 threadripper. Needs additional airflow but once you add fans it is a fantastic platform.
sedition666@reddit
Those Lenovos look decent that fan placement is very handy
koalfied-coder@reddit (OP)
Yep for the price used they are hard to beat.
ThenExtension9196@reddit
Definitely recommend setting power limit on this card. I have many. They are too hot for the form factor and blower. Dropping down to 400 is a much nicer experience. These cards are loud af btw.
koalfied-coder@reddit (OP)
That's strange, this model has really good thermals so far and quieter than my 3090 turbos.
a_beautiful_rhind@reddit
Did they ever fix the resizable BAR values? Bios still thinks it's 24gb so P2P driver fails.
koalfied-coder@reddit (OP)
Looks like 32GB is exposed. I looked it up and perhaps my BIOS is capped at 32? Im not an expert but clearly over 24gb.
a_beautiful_rhind@reddit
My 3090s request that too. Its pooped :(
In theory 48gb GPU should support 64gb.
https://github.com/tinygrad/open-gpu-kernel-modules/issues/36
alitadrakes@reddit
You modded the 3090?
a_beautiful_rhind@reddit
No but this is the BAR size it requests.
koalfied-coder@reddit (OP)
Bummer, what sort of performance or features does this restrict? I'll research a bit later but jw.
a_beautiful_rhind@reddit
fake nvlink. So you can p2p between cards when training or using NCCL, etc.
I wonder if someone tried the 5090 driver on it yet because it had a similar error, but only 32gb of ram. I don't have another 6k to spend on GPUs to find out, let alone now that they're tariffed.
koalfied-coder@reddit (OP)
That does sound pretty neat ngl. Thank you
Xamanthas@reddit
No, basically they all think its 32.
koalfied-coder@reddit (OP)
I have never had an issue with the Galax cards as they show up everywhere correctly. I cant comment on others tho.
a_beautiful_rhind@reddit
Also how are they "manufactured". I thought it's a new PCB and they have to transplant the core. Maybe the failing cards were just done low-rent style.
koalfied-coder@reddit (OP)
Most are transplant cores. However these I have been assured and appear to be entirely new manufactured. The temps and stats across the board are better as well.
MelodicRecognition7@reddit
this is a lie, all 4090 48GB are transplanted.
a_beautiful_rhind@reddit
Sounds too good to be true considering who can produce them.
MelodicRecognition7@reddit
did you actually check rebar?
koalfied-coder@reddit (OP)
Nope but I will and put in final report.
MelodicRecognition7@reddit
it is the most interesting thing, the card itself is nothing, everyone and their mom manufactures 4090 48GB and you can buy one in like 10 different places already but noone has a working rebar. I strongly doubt that Galax has a different vBIOS than the default hacked version with a broken rebar.
koalfied-coder@reddit (OP)
qq how can I most efficiently test this and report?
MelodicRecognition7@reddit
first check with
nvidia-smi -q|grep BAR -A1if it actually shows 48 GBkoalfied-coder@reddit (OP)
Got 32gb please see screenshot above
MelodicRecognition7@reddit
my mistake, a working vBIOS for a 48GB card should show 64 GB not 48.
32 GB means that the card has generic broken vBIOS so your cards do not differ from any other 4090 48GB on the market.
koalfied-coder@reddit (OP)
says I need to enable it for Linux. doing now
koalfied-coder@reddit (OP)
Hello sir enabling it in bios now. Seems I did not have it on and I was not aware of the benefits. Will report shortly
koalfied-coder@reddit (OP)
Is this what everyone was expecting?
Xamanthas@reddit
Thats not what he asked or said my dude.
az226@reddit
No
Secure_Reflection409@reddit
I don't suppose there are any slot in 2000w upgrades for the psu on that prebuild?
koalfied-coder@reddit (OP)
Umm not that I know of
DeathScythe676@reddit
can you install regular nvidia drivers straight from nvidia repo? or do you need some hacked drivers? (linux)
koalfied-coder@reddit (OP)
straight from the repo. currently running cuda 13
maifee@reddit
Cam you run wan2.2 14 billion??
koalfied-coder@reddit (OP)
I looked it up and yes I should be able to. Is there a benchmark for it I can run?
maifee@reddit
I am not sure about the benchmark for this. But you can clone the GitHub repo for this and try to generate a video with it.
And any link to this GPU??
koalfied-coder@reddit (OP)
sure hit my dms