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Best CPU for a 430hx system.

M

Mr. Horse

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Ok I'm rather rusty when its comes to socket 7 systems. Super socket 7 not so much.

I bought a 430hx chipset PICMG SBC for cheep, its not quite what i wanted, but is was 20$ with ram, a cpu, heat sink and pipeline burst cache card. I could not say no at the price.

Anyway, bios/motherboard support aside. Could a 430hz board support a k6-3+ or k63 or k6-ii?
I know the FSB is lacking, 83mhz would be the max and anything over 66mhz would put the PCI clock out of speck. So with a faster K6 I would have to use a lower clock speed or higher clock multi.
Could the chipset work with the 266mhz mmx Pentium?

Thanks.
 
HX is 66mhz FSB official so anything higher is a board makers hack. A P233MMX is probably the max you can use but it should support early Cyrix 6x86 and AMD K5's.
 
Stone said:
I've got Intel, AMD and Cyrix CPUs that meet those requirements if you're interested.
Click to expand...

I'm not looking for a CPU right now, the board comes with a mmx Pentium. This listing did not state witch, but seeing that its maxed out on ram and the pipeline burst cache card Id say its a faster one like a 233mhz.

My thought was ether a 266mhz mmx Pentium or a under clocked k6-2 or 3. But I'm not sure if the the chip set would support a k62 or 3, let alone the bios.
A K6-3+ would be nice with both l2 and l3, but like Chuck said, little is to be gained with a 66mhz fsb socket 7 board.

I was thinking ahead more then anything. I could get a k62 or 3 today, run it in the board and when I can find one for a good price, get a SSK7 SBC.
 
266mhz P1 requires a low voltage TX chipset, I never could get mine working

Unless your board supports 2.5 volts or lower core it’s unlikely a k6-2 would ever work without an interposer

Your board may support early k6 chips and Cyrix up to 233mhz if the voltage regulator is beefy enough.

Most HX boards were used with classic pentium chips to 200mhz, like won’t go much past that
 
I fou want to get crazy I have a Powerleap PL-ProMMX that lets you run a K6-2-400 on a socket 7 board.
 
My experience with a lot of those adapters is that you're still bound by the motherboard architectural constraints. That is, slow bus, slow memory.
 
Well the 430HX allows up to 512MB EDO RAM that is cachable, the newer 430TX Intel chipset only caches 64MB of RAM (256MB Max) and even if you use SDRAM it is still only 66mhz.

A super socket 7 board would be faster but then so would anything newer. I think the 430HX was the best chipset Intel had for Socket 7 which is why I keep a few around (it was their high end server chipset).
 
rmay635703 said:
266mhz P1 requires a low voltage TX chipset, I never could get mine working

Unless your board supports 2.5 volts or lower core it’s unlikely a k6-2 would ever work without an interposer

Your board may support early k6 chips and Cyrix up to 233mhz if the voltage regulator is beefy enough.

Most HX boards were used with classic pentium chips to 200mhz, like won’t go much past that
Click to expand...
Well it is a PICMG board. I'm not sure what it supports for voltage, but I'm sure its rather flexible. The VRM looks rather overkill. More then one mosfet, etch with its own massive heat sink.
 
It more likely has a massive heatsink because of being a linear regulator rather than having high power output capacity.
 
GiGaBiTe said:
It more likely has a massive heatsink because of being a linear regulator rather than having high power output capacity.
Click to expand...

That could be very well true.
I still think its rather big.
s-l1600.jpg

s-l1600.jpg
 
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Chuck(G) said:
Well, there you go--those TO-220s are dissipating the same amount of heat as your Pentium. Hence the big heatsinks.
Click to expand...

Yep. I think Ill sick with the 200mhz mmx and wait for a good deal on a super socket 7 board and run a 266mmx at 100mhz fsb with a lower multi.
 
Mr. Horse said:
Ok I'm rather rusty when its comes to socket 7 systems. Super socket 7 not so much.

I bought a 430hx chipset PICMG SBC for cheep, its not quite what i wanted, but is was 20$ with ram, a cpu, heat sink and pipeline burst cache card. I could not say no at the price.

Anyway, bios/motherboard support aside. Could a 430hz board support a k6-3+ or k63 or k6-ii?
I know the FSB is lacking, 83mhz would be the max and anything over 66mhz would put the PCI clock out of speck. So with a faster K6 I would have to use a lower clock speed or higher clock multi.
Could the chipset work with the 266mhz mmx Pentium?

Thanks.
Click to expand...

I think 430hx support k5 and k6.
 
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