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Can someone please tell me if there's anything wrong with this selection of parts? I will be running Linux on this.
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@forcedinductionretard eggsternal
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@wakarimasen wher floopy disquette
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@wakarimasen The main issue I can see is that everything except for the CPU fan, PSU and case won't operate without proprietary software.
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@Suiseiseki Don't worry, I won't actually run any software on it, I'll just use it as interior decoration. :yuzutehe:
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@birdulon Ah yes, there it is - I do enjoy being out interjected.
Fan controllers used to be purely logic gates, or use ROM, but it seems they run proprietary software now; https://ww1.microchip.com/downloads/en/DeviceDoc/PIC12F1501-16F1503-7-8-9-High-Temp-Data-Sheet.pdf
Dammit.
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@Suiseiseki @wakarimasen >PSU
That contains a microcontroller running undisclosed proprietary software lol
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@birdulon >It's possible that also uses a generic MCU to handle the PWM signal input to brushless speed control, easier for them to tweak the behaviour that way after all.
I believe the wiring is directly connected to an electric motor as PWM on/off pulses are very good at controlling of the speed of a motor.
It's up to the PWM controller on the motherboard to control the speed of the motor pretty much (it really doesn't matter if the fan is a few dozen RPM off).
Of course, you can get RGB CPU coolers that run proprietary software.
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@Suiseiseki I tried to see if the CPU cooler fan had any teardowns or information on the internal circuitry but couldn't find anything. It's possible that also uses a generic MCU to handle the PWM signal input to brushless speed control, easier for them to tweak the behaviour that way after all. There might even be such fans out there that have an exploitable ICSP trigger on the four wire connector!
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@not_benis @birdulon @newt @r @forcedinductionretard I've updated my build based on your feedback. If there are no glaring issues with this one, I'll probably order the parts next weekend. Could you please have another look at it? Thank you!!
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@wakarimasen @r liquid cooling isn't that bad, you just need a big case
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@r At this point I'm tempted to bite the bullet and just get the 7950X, but then I'd probably really need liquid cooling, wouldn't I.
I picked the NH-D15 because many people online seemed to like it. Do you have any better suggestions?
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@wakarimasen I'd say the original list was already good enough. The NH-D15 is an old and massive cooler, there better (and cheaper at the same time) options. I'd still suggest getting a 7900 instead of the 7900X, according to the Phoronix review, "The Ryzen 9 7900 was at 95% the speed of the Ryzen 9 7900X (while on average at 66% the power consumption)". Which means it can run just fine with a smaller capacity power supply, smaller cooler and a motherboard with not so great power delivery (unless the 10 gigabit network and the USB4 ports are required).
It still depends on the actual usage and the requirements though. This list is not bad in anyway.
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@wakarimasen @r oh it is :l_heh:
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@romin @r Setting it up seems like such a hassle though...
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@birdulon @r @wakarimasen never had a problem with mine after months of inactivity :l_think:
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@romin @r @wakarimasen it's fun to do once, but I got sick of my pumps dying every time I returned from a long holiday and started it back up
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@birdulon @r @wakarimasen you're supposed to buy an entire new computer every year :l_hehe:
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@romin @r @wakarimasen I had it happen to two pumps in 8 years and replaced the second dead one with that NH-D15
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@Suiseiseki >I believe the wiring is directly connected to an electric motor as PWM on/off pulses are very good at controlling of the speed of a motor.
The cheap setup is to just hook the PWM to a transistor gate yeah. It gives good-enough control from cold start to like 50-100% and can drop from there to like 30% or whatever somewhat reliably. Some more complex things that I'd expect premium fans to go for aren't practical with discrete logic, e.g. skipping over unpleasant fan frequencies (common feature on industrial fan drives where the consequences may be large masses rattling rather than user annoyance). They're easy enough to implement on the external controller side of course, but I wouldn't be surprised if some of these vendors take matters into their own hands.
Couldn't find any internal shots of this fan, but some of the features they advertise make me suspect they just dropped a microcontroller in, namely:
>In the event that the PWM signal is 0%, the SilentWings PWM will continue rotating at the minimum RPM.
>The Auto-Restart-Function makes it possible for the fan to restart itself automatically when interrupted
>When controlled via conventional systems, the low initial voltage ensures a rapid start-up phase for the fan
They *could* be approximated with discrete logic but that could be more expensive than just slapping a cheap MCU in, which would also be faster and easier to iterate on in-house.
waka
ForcedInductionRetard
翠星石
Birdulon
ロミンちゃん
r
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