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First post, by Kotu Koylu

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Hi vogoners. I have a aptiva 2144-910 model machine.
Board id is Type F-1
Machine default config cpu is intel dx2 66
1.My goal is upgrade cpu to cx5x86 /am5x86
Bios is up to date(1998)
But cpus ge toooo hot.does this board has a vrm? Or am i run this cpus at 5v?
2.The other question can i use 512k-50ns memory module for upgrade video memory(original config is 512k-70ns)

As here stated dx2 and dx4 have same jumper config?
https://stason.org/TULARC/pc/motherboards/I/I … -APTIVA-21.html

Reply 1 of 5, by Nitroraptor53

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DX4 requires 3v, and DX2 is 5v, so they SHOULD have different jumpers. Then again, the closest thing I have to an Aptiva the the IBM PS/1 Tower Model, so no idea, sorry

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Reply 2 of 5, by Kotu Koylu

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Problem is there has no voltage regulator in my mainboard.

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Reply 3 of 5, by Nitroraptor53

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You'll need an external Voltage Regulator or an Overdrive, I think there's a voltage regulator on Amazon, one sec...

"Oh I'm a good old rebel, now, that's just what I am."
MIcro ATX 486 Project
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Reply 5 of 5, by caiot5

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Sorry to reply to such an old thread but I came to report that I have an IBM Aptiva with TYPE F-1 board using a Cx5x86 100MHz and it works just fine.
The settings looks the same as DX4 CPU, and you can use the following guide as a reference:
http://ps-2.kev009.com/pcpartnerinfo/ctstips/ea3a.htm
TYPE F-1 boards are fully compatible with DX4 100MHz, however TYPE C-1 boards are not, in the case of TYPE C-1 you should use an Intel Overdrive DX4 "ODP " CPU.
I hope that helps at least some of you, I will leave it here for further reference.

Regards,
Caio T5 from Byte5