Data Has Weight but Only on SSDs

Geek war erupts: Is your SSD getting heavier or just nerd bait

TLDR: A playful claim says SSDs get slightly heavier as they store data, but commenters argue electrons just redistribute, so no real weight change. The thread turns into physics vs. prank lore, with debates over entropy, TRIM, and an old gag about balancing 0s and 1s—science meets internet comedy.

A podcast riff claiming “data has weight” sent the internet into a full-on nerd cage match. The article playfully suggests solid-state drives (SSDs) might get heavier as you store more bits, since SSDs trap tiny charges (electrons) in microscopic cells, unlike old-school hard drives (HDDs) that just flip magnetic directions. It’s a fun thought experiment with a big “don’t take this too seriously” sign—yet the comment section said, “hold my multimeter.”

The loudest voice? tliltocatl, who slammed the premise: electrons move around inside the chip like a seesaw, so the SSD’s total charge—and mass—stays the same. Meanwhile, jmclnx wondered if clearing a drive with the Unix tool dd or using TRIM (a housekeeping feature that tells the SSD which blocks are empty) would change this supposed weight. Physics fans chimed in with epx begging for Boltzmann and entropy, and themafia declaring it’s not weight we should debate—“data has a temperature.” The comedy award goes to nwellnhof, recalling a legendary April Fools gag: a magical defrag that “balanced” 0s and 1s for smoother drives. In short, the community split into lab coats vs. meme lords, mixing high school physics, thermodynamics, and pure internet chaos. For actual SSD guts, the original piece points to ExtremeTech, but the real show is the comments—hot, snarky, and delightfully petty.

Key Points

  • The article is a non-scientific musing proposing that more stored charge in SSDs could imply a tiny mass increase.
  • SSDs use NAND flash memory with cells that store charge in floating gates or charge trap layers, unlike HDDs’ magnetic storage.
  • Programming NAND applies ~15–20 V to induce Fowler–Nordheim tunneling, trapping electrons and shifting threshold voltage.
  • SLC stores 1 bit (two states); TLC stores 3 bits via eight charge levels, with modern level differences down to ~10–100 electrons.
  • Reading measures threshold voltage with lower gates; erasing removes charge with opposite polarity in large blocks (MB-scale).

Hottest takes

"the net charge of a SSD chip is always zero" — tliltocatl
"More appropriately data has a temperature" — themafia
"a defragmentation-like tool ... distribute 0s and 1s" — nwellnhof
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