me: okay, looks like my ram is broken. I guess I need to buy new ones *opens website* ram: HYPERX FURY me: ram: VENGEANCE me: okay I just- ram: BALLISTIX SPORT me: what does that even- ram: PREDATOR. DOMINATOR. SNIPER X me: me: what is wrong with gamer- ram [screaming]: RIPJAWS
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Odgovor korisnicima @FreyaHolmer @atomicthumbs
this disease runs deep and not just in consumer hardware. broadcom has carrier-grade switches called Trident, Tomahawk and Maverick, and, ugh
5 replies 3 proslijeđena tweeta 111 korisnika označava da im se sviđa -
Branding is ridiculous. The best part is that all of these RAM brands are nearly-identical reference PCB designs built around ICs from one of about three companies. About the only difference is whether there's a heatsink, and what color they anodized it if so.
9 replies 1 proslijeđeni tweet 112 korisnika označava da im se sviđa -
Odgovor korisnicima @azonenberg @whitequark i sljedećem broju korisnika:
WTF, RAM has heatsinks now??
1 proslijeđeni tweet 12 korisnika označava da im se sviđa -
Odgovor korisnicima @RichFelker @azonenberg i sljedećem broju korisnika:
yeah. not only it heats up a lot, but DDR4 also has to be retrained each time the temperature changes by more than 20°C or so, which causes a large amount of issues, especially on embedded systems
10 proslijeđenih tweetova 55 korisnika označava da im se sviđa -
Odgovor korisnicima @whitequark @RichFelker i sljedećem broju korisnika:
wait WHAT
0 proslijeđenih tweetova 10 korisnika označava da im se sviđa -
Odgovor korisnicima @importantshock @RichFelker i sljedećem broju korisnika:
what's worse is that DDR4 training code is so much of a secret that even Intel could only get it into coreboot as a blob, even when every other part of the firmware is OSS on Tegra, this blob runs on the main Linux as a normal part of the kernel, which is extra hilarious
11 proslijeđenih tweetova 71 korisnik označava da mu se sviđa -
Odgovor korisnicima @whitequark @importantshock i sljedećem broju korisnika:
https://github.com/CTCaer/minerva_tc … was an interesting project - switch homebrew people were dissatisfied with how Linux was necessary for working high-speed DRAM, so they just reverse-engineered the training microcode and it's now capable of DRAM pretraining in the bootloader.
3 proslijeđena tweeta 6 korisnika označava da im se sviđa
You know, looking into it, and a lot of the pretraining regs look like they could be config'd in such a way as to enable rather clean SDR (radio, not RAM) transmit with the kind of CPU power the Nintendo Switch has... Had anyone actually tried making a radio out of a DRAM iface?
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Odgovor korisnicima @sirocyl @whitequark i sljedećem broju korisnika:
yes theres a paper by IIRC that Israeli group that shitposts a bunch of papers about odd side channels about exfiltrating data over RF emissions induced by dram accesses
1 reply 0 proslijeđenih tweetova 4 korisnika označavaju da im se sviđa -
Odgovor korisnicima @alt_kia @whitequark i sljedećem broju korisnika:
Spurious emissions are easy, but getting them to mean something to your GSM phone is another challenge
0 replies 0 proslijeđenih tweetova 1 korisnik označava da mu se sviđa
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