06 April 2021, 13:59 | #1 |
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Amiga 1200 with blizzard 1230 4A/50W sufficient?
Hi on an Amiga 1200 with a blizzard 1230 68030 cpu and 68882 fpu both at 50 mhz and an IDE CF card are 4Amps/50W (mean well rpt-60b) enough for stable operations? Even with a pcmcia ethernet card?
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06 April 2021, 14:43 | #2 |
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Yep, that's plenty - it's unlikely that setup uses much more than half that 5V capacity, and probably doesn't exceed 15W.
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07 April 2021, 11:19 | #3 |
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A600/1200 PSU 3 A is probably enough as you're not using mechanical HDD or CDROM.
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07 April 2021, 13:47 | #4 |
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A standard 3A PSU is enough even if you are using a mechanical HDD and CD-ROM. The problem with the older PSUs is not the rated capacity, it's that some of them deteriorate and are no longer able to reliably provide their rating. If they're working correctly, any standard Amiga PSU can power an A1200 with an 030, hard drive and CD-ROM drive with capacity to spare.
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07 April 2021, 20:06 | #5 |
0ld0r Git
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I understood 5A was a better solution for Less Strain overall.
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07 April 2021, 21:18 | #6 |
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Once a PSU is able to supply the maximum required current without causing problems, that's all you need. Having extra in reserve is no harm of course, and you don't want to be sitting right at the limit for things like this, but an A1200 with an 030 and mechanical hard drive is probably only going to use around 2.5A.
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08 April 2021, 17:42 | #7 |
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Second that. I use my A1200 with an Aca1233 (030+Fpu) with a 2,5A Power Supply. It works stable. First I forgot to check but when I looked I was surprised that it works with that small PSU. I once checked with a watt meter (not sure how accurate, but better than nothing) and with the card active system consumption only increased by 2 watts.
PS: Plugging in the furia into my A600 lets consumption rise by 6 watts which explains why that thing gets so hot. |
10 April 2021, 12:10 | #8 |
0ld0r Git
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The power drawn for Hard Drive spin up is alarming.
I know a Desktop 1200 isn't going to have 6 x SCSI hard drives banging away but 4A is not adequate if you're using a Big Box Amiga with lots of hard drives. Sure, we can get CF & mSATA devices these days but if you want to be Traditional/Real Retro with your Big Box Amiga, all I will say it becomes a bit of a "Jeremy Clarkson" affair.... "More Power" |
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