interesting, makes me glad all my socket 8 boards are ATX
maxtherabbit wrote on 2026-10-25, 14:37:interesting, makes me glad all my socket 8 boards are ATX
Especially if they're Duels!
My other Socket 8 system's also ATX. (Well it has both options)
Irinikus wrote on 2026-10-17, 07:48:There are two types of electrolytic caps on this card, but both types have the same value: 1000MFD 6.3V 105 Degrees Centigrade ...
... Can someone please explain what the difference between these two types of cap is? (As the one type is considerably taller than the other.)
Everything else being equal, the larger the cap can, the lower the ESR.
The black smaller ones are filtering the input to the CPU VRM High FETs. Here low ESR is desirable, but not so critical.
The green tall ones are filtering the output from the VRM Low FETs to the CPU. As low as possible ESR is critical here.
Irinikus wrote on 2026-10-17, 07:48:... I just ordered 10 of these EEUFR1C102LB's to replace the VRM caps, they're more substantial than the EEUFR0J102's (I'm doing this just for good measure) ...
^ Well done 👍 , the 1C102L are ESR= 30 mΩ, about half than the 0J102 (56 mΩ), and thus better suited for CPU VRM output (replacing the 10 green Sanyos).
Let the air flow!
It’s been re capped and the extra power wiring is installed, I just need to fit and crimp male 4-pin MOLEX connectors!
That was a lot of work!
speaking of power, the current power supply that I have fitted can only supply 5V@20A maximum, and this thing needs at least 30A on the 5V rail, so I've ordered one of these industrial power supplies, which gives me 30A on the 5V rail and it also gives me -5V, for what it's worth: (FSP FSP300-60ATV (PF) 300W Industrial Computer Standard Power Supply)
Judging by the gauge of the cables, this thing should be up to the task!
Here’s how I wired the extra 5V couplings up:
Nice work!
Just came to wonder if you could've fed the 5V directly onto the CPU daughterboard in stead, thus also eliminating resistance in the edge connector.
If it's dual it's kind of cool ... 😎
--- GA586DX --- P2B-DS --- BP6 ---
Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀
H3nrik V! wrote on Today, 12:01:Nice work!
Thanks! 😀
H3nrik V! wrote on Today, 12:01:Just came to wonder if you could've fed the 5V directly onto the CPU daughterboard in stead, thus also eliminating resistance in the edge connector.
We have discussed this possibility on the Silicon Graphics User Group Discord.
It may be worth looking into, especially if you want to do some overclocking. (These CPU's ran stably @ 233MHZ in my other machine.)
The issue is: wether it can be done neatly and non-invasively.
