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ASUS TX97 known problem

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First post, by Retronerd878

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I recently bought this board and on the Retroweb ASUS TX97 it is stated that it has Inadequate Power Delivery.

This motherboard may have insufficient power delivery, which can lead to unstable or unsafe operation. In extreme cases, this may result in hardware damage, spontaneous combustion, or other electrical failures. Users should exercise caution and consider upgrading the motherboard power supply or other components to ensure safe and stable operation. The RetroWeb community may also provide guidance and assistance in mitigating this issue.

Anyone know exactly what is the problem? Because it looks quite concerning. I'm planning to use a PI 233 Mhz with it.
If there is some IC or electrical component that needs to be replaced for fixing the problem, I'm pretty handy with the soldering iron. However, I need more details about the issue. Anyone who knows more about this?

Reply 1 of 9, by majestyk

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You forgot to provide a picture of your own TX97, so we cannot see which capacitor brand / series was used for your board.

Reply 2 of 9, by leonardo

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Retronerd878 wrote on 2026-03-29, 11:31:
I recently bought this board and on the Retroweb ASUS TX97 it is stated that it has Inadequate Power Delivery. […]
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I recently bought this board and on the Retroweb ASUS TX97 it is stated that it has Inadequate Power Delivery.

This motherboard may have insufficient power delivery, which can lead to unstable or unsafe operation. In extreme cases, this may result in hardware damage, spontaneous combustion, or other electrical failures. Users should exercise caution and consider upgrading the motherboard power supply or other components to ensure safe and stable operation. The RetroWeb community may also provide guidance and assistance in mitigating this issue.

Anyone know exactly what is the problem? Because it looks quite concerning. I'm planning to use a PI 233 Mhz with it.
If there is some IC or electrical component that needs to be replaced for fixing the problem, I'm pretty handy with the soldering iron. However, I need more details about the issue. Anyone who knows more about this?

I have the -XE variant of this board and looking into the differences, it appears that the regular TX97 has a simpler VRM with fewer phases/lower-spec MOSFETs. Still, I'd be surprised if you had any issues without going into overclocking. The P233 MMX has a voltage requirement of roughly 2.8V, and supported voltages for the TX97 vary slightly depending on the board revision, so you might want to check out if yours can deliver higher voltages than that. If so, you're probably not pushing the board at 2.8V. If 2.8V is max, it might potentially be a little 'unsure'.

I run my board with a K6-III+, which is rated for a much lower 1.6V (which the board cannot deliver), at 1.8V and system is stable at both the within-spec 400 MHz clock, as well as at a 450 MHz overclock with a 75 MHz FSB.

[Install Win95 like you were born in 1985!] on systems like this or this.

Reply 3 of 9, by Retronerd878

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The pictures are from the ad. I haven’t received the board yet. I don”t think this is a capacitor problem. Recapping would be an easy job as it doesn’t have that many.

Reply 4 of 9, by Dorunkāku

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The warning is not about voltages, but about the amperage the processor needs. A Pentium MMX needs upto 6.5 ampere (source), a AMD K6-3 needs upto 13.5 ampere (source).

A Pentium 233 MMX should be just fine on this board.

Reply 5 of 9, by Retronerd878

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Even if the board works and caps look fine, should I recap it anyway?

Reply 6 of 9, by shevalier

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Retronerd878 wrote on 2026-03-30, 11:25:

Even if the board works and caps look fine, should I recap it anyway?

To check that the capacitors are working properly in right way:
- Desolder them all - buy a ESR tester - check all the capacitors - solder them back in.
To replace the capacitors:
- Desolder all the capacitors - solder in the new capacitors.
P.S. It’s still better to have a capacitor ESR meter than not to have one.
When you don’t need it, you don’t need it.
But when you do need it, it’s hard to do without it.

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Reply 7 of 9, by rasz_pl

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imo waste of time if its working well
if you have access to oscilloscope you can check ripple on CPU power rails

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Reply 8 of 9, by shevalier

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rasz_pl wrote on 2026-03-30, 12:15:

if you have access to oscilloscope you can check ripple on CPU power rails

Firstly, you need to measure the noise correctly.
To do this, you need a very specialised probe for an oscilloscope.
Secondly, you have to spend a long time painstakingly searching for an acceptable level of noise on the power supply line for this type of processor.
It’s not as simple as it sounds – it’s not just a matter of 20–50–100 mV peak-to-peak, and then everything’s wrong.

For example, the Pentium MMX.
With a mix of polymer and low-ESR capacitors, this processor runs perfectly at 2.8V and 250MHz (100MHz FSB).
With the original 20-year-old Sanyo low-ESR capacitors – 3.2V – errors occasionally occur.
Or a problem with USB-storage. Its capacitor related problem.
PS. Its side project. Therefore, not all capacitors are polymer capacitors; these are simply the ones I had to hand.

Aopen MX3S, PIII-S Tualatin 1133, Radeon 9800Pro@XT BIOS, Audigy 4 SB0610
JetWay K8T8AS, Athlon DH-E6 3000+, Radeon HD2600Pro AGP, Audigy 2 Value SB0400
Gigabyte Ga-k8n51gmf, Turion64 ML-30@2.2GHz , Radeon X800GTO PL16, Diamond monster sound MX300