hey

do you wanna bet on how many of these i can stack before the system stops booting?

https://www.aliexpress.com/item/1005010552534599.html

@whitequark i'm guessing 5
@dramforever my guess was 4 but i don't know what the loss in connectors is like
@whitequark They should make a DDR5 to screw terminal adapter so a licensed electrician can install my RAM
@whitequark @wren6991 wire nuts for the US version.
@dtl @wren6991 :spray_bottle:

@dtl @wren6991 @whitequark

Fondly remembering the first time our (then startup) had a booth at a exhibition in the USA, and of course we packed the wrong mains extension cord. Luckily there's a electronics store right on the other side of the street and we try to scramble something together mating Schuko to split phase power NEMA that's cost effective and safe.
At some point I jokingly blurt out "well, we could wire nut it and it'd be to US code" to which my colleague asks "what's a wire nut?"

@wren6991 @whitequark @datenwolf first time I saw them was when putting up a new ceiling lamp for my family in the US.
I thought they were just a joke item until then.

@dtl @wren6991 @whitequark @datenwolf I was today's years old when I learned about wire nuts.

After seeing a usage video I am still convinced they are a joke item. 🤯

WAGO all the way down but regular Luster clamps are okay too because one could check the electrical connection from the outside via the screws.

@ppxl @dtl @wren6991 @whitequark

Wire nuts, like so many other things in the USA are a physical manifestation of what I have come to think about the core (engineering) mantra they have over there: "Good enough…"

Over the past 10 years I've "tested" about every hotel in the San Francisco Union Squere area, and it was only last year, that I actually stayed in a room that didn't have a wild maze of pipes and conduits criss-corssing some corner of the ceiling.

@whitequark Linus tech tips had a similar idea but with PCI-E risers and with a GPU, the answer ended up being meters of it with barely any performance loss lol. Although I feel like ram will probably degrade sooner as closer communication with the cpu is needed. (Vid: https://m.youtube.com/watch?v=q5xvwPa3r7M )
How many PCIe Extensions is TOO MANY??

YouTube
@whitequark Knuckles is gonna start flying around your RAM
11 things piled onto a MegaDrive/Genesis? (I may not have counted correctly) I'm surprised they didn't manage to fit a Power Base Convertor (SEGA Master System adapter/pass through) into that stack somehow.

Admittedly, some of the goofiest tricks for that system were the "unplug XYZ cartridge, plug in ZYX cartridge without turning off the power and get infinite lives!" glitches.
@whitequark Man, those are *antennas*, so…maybe two or three?

@whitequark In my experience it gets tricky with more than 2. Source: I built multiple interposers in the last few years for Rowhammer research.

https://github.com/mcsee-artifacts/ddr5-udimm-interposer-pcb

https://github.com/refault-artifacts/fault-injection-interposer

GitHub - mcsee-artifacts/ddr5-udimm-interposer-pcb: Our custom DDR5 UDIMM interposer with soldering points.

Our custom DDR5 UDIMM interposer with soldering points. - mcsee-artifacts/ddr5-udimm-interposer-pcb

GitHub
@whitequark “What great big RAMS you have, Grandma.”
DDR5 riser? Do they come at an angle, or loose?
@whitequark just remember to load HIGHmem.sys