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I wonder if some day we will get a DRAM board specification thats smaller then SODIMM.
by jeffybefffy519 5y ago
I wonder if some day we will get a DRAM board specification thats smaller then SODIMM.
- csdvrx 5y agoIt could be done simply with Pogo pins, or like for cpus a long time ago, ZIF sockets
- mschuster91 5y agoZIF sockets likely would be extremely challenging in terms of mechanical integrity at high pin density and EMF radiation hardening. Not worth the effort, sadly.
- joe_guy 5y agoI believe one issue with all of those is they go through all layers of the PCB. Not sure if surface mount sockets exist?
- csdvrx 5y agoThink in 3D: I never said the Pogo should be under the chip in one 2d plane. They could be on the sides at an angle, and the chip in a "hole" cut in the PCB
- jacquesm 5y agoThat would probably not work, those chips have ground planes under them for cooling purposes.
- csdvrx 5y agoRAM remains passively cooled to this day, so some thermal pads diffusing the heat to the metal case might be enough
- joe_guy 5y agoI'm having difficulty picturing this. Can you point to an example? What's the reliability like on a socket like that to a decade of bumps?
- starky 5y agoI don't think they are available as standard components, but there are companies out there that make sockets for mounting DRAM chips to allow for debugging.
- ksec 5y agoThat was my question as well when looking at how much space SODIMM requires on the Framework laptops. Although I am not entirely sure if there is a market for it. Part of the reason ( or benefits ) for going soldered Memory and NAND is assembly automation in production line.