141–150 of 188 posts
This will make motherboards more expensive and fragile. Desktop chipsets from Intel can only support two generations of processors. While a good PSU can have ten years of warranty.
A plan for planned obsolescence?
Only as anecdata, in my practical experience over the years, I needed to change many power supplies[1], and very few motherboards. (excluding replacements due to upgrades) I would go a little bit further and say that the PSU is probably the most replaced "standard" part of a PC, followed by hard disks. I also a couple times repaired a PSU replacing this or that failed component, but it is simply not worth the time an…
Are you buying bottom of the barrel PSUs? I've had the same Corsair unit in three machines over the last decade. Works perfectly fine.
I love computers with 12VDC native power jacks. Why? My solar-powered van (interior only, the engine is still diesel) is 12VDC everywhere, and that's good clean battery DC, not some noisy-ass AC/DC conversion. I love it so much that 2 of the last 3 computers I built (on an ATX form factor) were 12VDC native. I have external AC/DC power supplies for them, but when travelling/living in a solar-powered environment, I ge…
https://www.jonnyguru.com/blog/2018/07/03/seasonic-prime-ult...
Is 30 dB SNR insufficient for a digital system?
> My guess is that someone figured out how to shrink the necessary converters to a size that made it more "sensible" to put them inside the monitor
I’m under the impression that this was demand/market forces. It used to be much cheaper to have an external brick rather than engineer a power supply into a monitor. However, the engineering cost was lower than the missed sales due to consumers not wanting external power supplies. It’s just another thing to lose. Another unique plug you’ll never be able to reasonably replace with what’s on hand.
12V makes so much more sense to be sending around - the losses at lower voltages are rough. It would be nice to replace legacy molex connectors with a more modern standard, however.
> It would be nice to replace legacy molex connectors with a more modern standard Any example of the modern one? I personally have no issues with the current one. I am not sure if those molex connectors should be called as legacy.
I also think the design is large and dated, and I think the modular nature of the connectors is unnecessary. But I don't know how small a wire gauge you can safely use for the current delivery on some of these 500-1k W PSUs.
12V makes so much more sense to be sending around - the losses at lower voltages are rough. It would be nice to replace legacy molex connectors with a more modern standard, however.
ATX power uses 18 AWG copper cable. 18 AWG copper cable has 6.4 ohms of resistance per thousand feet. A 6 foot 18 AWG cable would have .0384 ohms of resistance. Let’s say you has a pretty heavy load of 10A. This would be a 0.33 ohm load. There would be about 10% loss, or 3W.
Not nothing, though at more typical loads the cable loss would be lower. 5V rails are more typically used and they would have close to half the loss.
Earlier quoted context omitted.
> It would be nice to replace legacy molex connectors with a more modern standard Any example of the modern one? I personally have no issues with the current one. I am not sure if those molex connectors should be called as legacy.
Bulkiness is my main complaint, they can be a real nuisance in small form factor cases.
Earlier quoted context omitted.
Perhaps but I'm not so sure we may see things play out in AMD's favor since they are fabless but Intel remains shackled to ever more costly and difficult fabrication. Either way they did hire Jim Keller and I am excited to see what he can do with their resources and technology.
I disagree. Intel’s capacity needs are huge, to the point where the benefits of outsourcing just can’t happen. Also, it’s not a good idea to rely on others, because they can screw up. Remember 28nm and the graphics fiasco? Sure, the costs will be high and there will be some risks of an in-house fabs but it’s Intel. They’re better off with it.
How long has Intel had 10nm on it's roadmap? I think their earliest roadmaps said it should have happened 5 years ago.
Earlier quoted context omitted.
Maybe for a lot of things, but I've seen plenty of SSDs that only need 5v power, and I've never seen one that only needed 12v.
You mean 3.3V (since M.2 is 3.3V only)? It's trivial to convert 12V to 3.3V tbh
Intel SSD 530? "5.0V SATA Supply Rail" [1]
Seagate 600 SSD? "+5V Max" [2]
Toshiba SG5? "Supply Voltage 5.0 V ±5%" [3]
Swissbit X-60? "5V± 10% (3.3 V available upon request)" [4]
Apacer SV250-25? "5.0V ±10%" [5]
So the statement that "12V is the defacto standard for powering pretty much anything these days" isn't accurate in the case of 2.5" SSDs. I acknowledge desktop computers often supply 12v to the motherboard and graphics card, of course!
(Some 2.5 inch SSDs, like the Micron 5100 Series use both 5v and 12v [6] - and I agree that M.2 is 3.3v only)
[1] https://www.intel.com/content/dam/www/public/us/en/documents... [2] https://www.seagate.com/files/www-content/product-content/ss... [3] https://toshiba.semicon-storage.com/content/dam/toshiba-ss/a... [4] https://www.mouser.co.uk/datasheet/2/615/X-60_fact_sheet-163... [5] https://www.mouser.co.uk/datasheet/2/24/SV250-25_AE2.255XXC.... [6] http://www.mouser.com/datasheet/2/671/5100_ssd-1283974.pdf
I love computers with 12VDC native power jacks. Why? My solar-powered van (interior only, the engine is still diesel) is 12VDC everywhere, and that's good clean battery DC, not some noisy-ass AC/DC conversion. I love it so much that 2 of the last 3 computers I built (on an ATX form factor) were 12VDC native. I have external AC/DC power supplies for them, but when travelling/living in a solar-powered environment, I ge…
It's very likely you can just bypass the internal PSU on any monitor and power it straight from your battery.
You'll just need to take it apart, which can be hard depending on the housing.