486 Computer RAM - 30 pin vs 72 pin

Discussion about old PC hardware.

Re: 486 Computer RAM - 30 pin vs 72 pin

Postby tpowell.ca » 2018-10-18 @ 14:45

tayyare wrote:Yes you can :lol:

PC Chips TXPro M560

PS: Maybe this board is not typical but sorry, I couldn't resist :blush:


I am getting 0wn3d.
In my defense, that appears to be a feature of the TXpro chipset and maybe a few others.

The danger here is that SIMMs typically run at 5v and DIMMs run at 3.3v. Some claim that mixing memory types can cause you to overvolt the DIMMs. Not sure if that's true.
Last edited by tpowell.ca on 2018-10-18 @ 15:11, edited 1 time in total.
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Re: 486 Computer RAM - 30 pin vs 72 pin

Postby Koltoroc » 2018-10-18 @ 15:06

tpowell.ca wrote:I am getting 0wn3d.
In my defense, that appears to be a feature of the TXpro chipset and maybe a few others.

The danger here is that SIMMs typically run at 5v and DIMMs run at 3v. Some claim that mixing memory types can cause you to overvolt the DIMMs. Not sure if thats true.


FPM and EDO SIMMs are 5v, EDO DIMMs can be either 5v or 3.3v and SD-RAM is 3.3v

Mixing SD-RAM with EDO RAM does not work at all because of how different they work Mixing EDO DIMMs with EDO SIMMS would only work with 5V DIMMs. Disallowing mixing makes sense for safety reasons, but I am not surprised some PC Chips Bargain bin board allow it. I mean PC Chips isn't exactly known to give a shit about reliability.
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Re: 486 Computer RAM - 30 pin vs 72 pin

Postby dionb » 2018-10-18 @ 15:40

This has very little to do with PC Chips and more with the basic functionalities of a chipset. "TXPro" is PC Chips-speak for the ALi Aladdin IV+ chipset, which is an interesting and very fast (clock for clock the best memory performance of any So7 chipset, just beating the i430TX, but with far more features). Never knew about this one though...
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