Hardware

47 readers

1 users here now

A place for quality hardware news, reviews, and intelligent discussion.

founded 1 year ago

MODERATORS

What is to stop people from doing the same here in the west? Chinese factory's disassemble 4090 and repurpose for AI GPU. (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

32 comments fedilink hide all child comments

Here is the link.

I can see people buying GPU, send it to Mexico, and do the same, then export the chips to China. Since China is already offshoring their production to Mexico, the logistic chain is already there.

https://www.techpowerup.com/316066/special-chinese-factories-are-dismantling-nvidia-geforce-rtx-4090-graphics-cards-and-turning-them-into-ai-friendly-gpu-shape

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 11 months ago (3 children)

And mining. Ethereum mining is very memory intensive, so they had to limit memory bandwidth and find other ways to make up the performance for games. That’s why you don’t see 384 or 512-but memory bus anymore, they’re all as low low low as you can go. A 128-bit bus isn’t uncommon, sadly.

[–] [email protected] 2 points 11 months ago

The reason for the shrinking memory buses is the bad scaling of IO with newer processes. The memory controllers on AD102 have basically the same footprint as that on GA102, in spite of there being a gigantic increase in overall transistor density

Ethereum mining hasn't been a thing for a year now btw

[–] [email protected] 1 points 11 months ago

That’s why you don’t see 384

2080 Ti, 3090, 4090.

or 512-but memory bus anymore

We haven't seen them since we moved to GDDR6. Simply because the signal integrity and power requirements makes it quite unreasonable.

find other ways to make up the performance for games

Lack of DRAM scaling is the reason why we are where we are. Computational power has grown much faster than bandwidth.

Nvidia has had around a generation of advantage in bandwidth efficiency/utilization since Maxwell over AMD. Surprise surprise, one generation after AMD they as well have to resort to larger caches to substitute for bandwidth.

A 512 bit G6 bus (which isn't realistic to begin with), would not have given 4090 enough bandwidth over 3090. To keep up with the growth in computational power.

[–] [email protected] 1 points 11 months ago

Exactly, entire planet is consipiring to deprieve gamers of High end GPUs.