AOpen AX59 Pro voltage settings

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Super7Dude
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AOpen AX59 Pro voltage settings

Post by Super7Dude »

Hey guys,

I've been eyeing an Aopen AX59 Pro on ebay and have heard that it supports voltages from 1.3v-3.5v. Im interested in running my K6-III+ at 1.5-1.6v for passive cooling. Does anyone know the jumper settings for the voltages (especially below 2v) for this board? The Aopen manual only mentions 2.2v as the lowest.
Thanks :)

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Nohr
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Post by Nohr »

I have a printed list of jumper settings for 1.30V-3.5V for that motherboard. I have no idea where I got it since it's been several years now. Maybe I could scan it or something if you want.
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Stedman5040
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Post by Stedman5040 »

I have an AX59pro ver 1.32. There are 8 toggles for the switch. Numbers 1,2 and 3 are for setting the cpu multiplier and 4,5,6,7 and 8 for the cpu core voltage. For settings below 2.0v switch 8 must be on. So settings are as below

Volts 4 5 6 7 8
1.3 off off off off on
1.5 off off on off on
1.6 off on on off on
1.7 off off off on on
2.0 off on on on on
2.05 on on on on on

Switch 4 will supply 0.05V
Switch 5 will supply 0.10V
Switch 6 will supply 0.20V
Switch 7 will supply 0.40V

So for instance on,off,on,off,on is equivalent to 1.3+0.05+0.20=1.55V
on,off,off,on,on is equivalent to 1.3+0.05+0.40=1.75V


Hope this clears things up for you.

Stedman
Super7Dude
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Post by Super7Dude »

Thanks for the quick replies guys :) I'll let you know how it goes.
Super7Dude
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Finally got it going!

Post by Super7Dude »

Hey guys

I finally got my K6-III+ going with my AOpen AX59 Pro. Also found two 256MB CL2 double-sided DIMMS for it for only $65 :) Its going great! Another quick note: I can confirm that the AX59 Pro is one of the few boards that can handle SIMMs and DIMMs together and combine memory sizes :o ! The only other board I know of that can do this is the FIC VA-503+.

Thanks for the tips with the voltage settings; that K6-III+ 450ACZ chip of mine can do 450MHz stable at 1.3v, 500MHz stable at 1.5v and 550MHz stable at 1.65v :lol:

:edit: those two CL2 256MB sticks can do so at PC133 :lol:

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tazwegion
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RE: Finally got it going!

Post by tazwegion »

I had a later revision of that particular board, and though it is possible to run Simm & Dimm memory modules concurrently it is generally discouraged due to their differing voltage requirements ;)
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DonPedro
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Post by DonPedro »

I would also like to add a question: simms run at 66mhz or what? if so then this would mean, that the fsb is set to 66mhz and cpu can reach 6x66mhz=400 maximum speed. also if they are running with 66mhz only would decrease memory performance quite a bit and pairing them with dimms won't help anything.

@super7dude
you wrote: " those two CL2 256MB sticks can do so at PC133 "
do you mean you actually ran the memory at that speed on the ax59 board? how did you manage?
Super7Dude
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More info on RAM and board speeds.

Post by Super7Dude »

Hey guys, haven't been in a while.. sorry

The RAM is rated at CL2 with PC133 according to the label... I verified it to be stable using a GA-5SMM and my K6-III+ at 4.5x133. It ran memtest just fine for several hours @ 2-3-2-5 :) My AX59 Pro won't boot above 112MHz.

regarding SIMMs and DIMMs, I'm pretty sure the AX59 Pro board supplies 5v to the SIMM slots and 3.3v to the DIMM slots as I've been able to stress both of them together with memtest and neither seemed to overheat (by feel).

OK, the AX59 Pro being a VIA MVP3 based board has a nifty setting (like the FIC VA-503+) where you can run the RAM clock at the AGP clock. This allows the CPU to use the full 100MHz FSB while the SIMMs and DIMMs receive the 66MHz AGP clock. This allows both to be stable.

Additionally, I was able to run my chip at 5 x 112 with 1.65v core and the SIMM RAM at 75MHz stable as well :) Above 75MHz memory clock, the SIMMs wouldn't be counted in the memory test.

:edit: the CPU needs 1.7v to stabilise at 560MHz.

:update: I just found two 64MB EDO SIMMs that run just fine at 112MHz! :o EVEREST RAM bandwidth score was 210MB/s, about on par with the 1st gen intel PC66 chipset (i430TX) and only 40MB/s behind true PC100 SDRAM at CL2 with the MVP3 chipset! :wink:
DonPedro
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Re: More info on RAM and board speeds.

Post by DonPedro »

Super7Dude wrote:
The RAM is rated at CL2 with PC133 according to the label... I verified it to be stable using a GA-5SMM and my K6-III+ at 4.5x133. It ran memtest just fine for several hours @ 2-3-2-5 :)

super7dude,
you just kick me out of my shoes! you got 4.5x133 stable on a ga-5ssm board??!! how did you manage to get the onboard vga disabled? did you use both 256mb sticks? did you boot into windows? how was testing there? any hot-cpu-tester results? we have a thread on the sis530 chipset (soyo / gigabyte boards). could you post your ga-5ssm @133mhz experience over there?
Super7Dude
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GA-5SMM at 133MHz

Post by Super7Dude »

Yep, got it stable using both 256MB sticks and using the onboard vga too! It was stable with a PCI Radeon 9250 as well. All I did was disable the onboard L2 cache, as this would lock it up right as it tried to boot. With the cache disabled, it loaded to XP just fine and I was able to run the EVEREST stress test (CPU, FSB and RAM stress tests) for about 5 hours. The only thing so far that crashed it was 3DMark2001. It was stable for everything else I tried (SuperPI, ORTHOS, memtest) :o. Also as the board undervolts a bit, I set the vcore to 2.1v for the CPU to be stable :)

*update* using a GeForce2MX/400 PCI, scores 1380 at stock with 41.09 drivers (133FSB!)
Last edited by Super7Dude on Fri Jan 19, 2007 6:06 am, edited 1 time in total.
DonPedro
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Re: GA-5SMM at 133MHz

Post by DonPedro »

Super7Dude wrote:Yep, got it stable using both 256MB sticks and using the onboard vga too!
as far as I know you are the first person to achieve that. the highest fsb with onboard vga enabled during my testing was 112. everything above producec colorful garbage on the screen after some minutes.

ok, hope to read (and learn) a lot from you over at the sis530-thread. see you there :)
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