3dfx Archive - Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI

Komponent

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Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI
05.10.13 at 16:44:02

I have done in the past a couple of voltmods on Voodoo 5 5500 AGP cards, but these days I was wondering about modding the PCI version so I searched the web for a guide and found none, so I decided to start from scratch and share the infos when successful.
So here it goes:

If you want to a higher overclock on your Voodoo5 5500 PCI you need to increase the voltage applied to the GPUs. I warn you need good cooling and you probably should not go past 3.3V. All you need to do is solder a 10KOhm multi-turn trimmer in parallel with R123 (top right of the card). Before soldering I suggest you set the trimmer to above 9.5KOhm. Take your multimeter and place one probe on the marked measuring point (on the voltage regulator, bottom right of the card) with the other probe connected to ground. With the system running, turn the knob on the trimmer keeping watch on the read voltage until you reach the desired value. Have fun! Tongue

With the pictured card with no voltmod applied I could overclock to about 180Mhz, but after modding I was able to go up to 190Mhz when the stock 6ns RAM kicked in and started trowing artifacts. 3.2V were needed to fed the GPUs to get the card stable and it got hotter than usual.

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« Last Edit: 26.10.13 at 15:50:14 by Komponent »

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m14radu God Member Offline Take your chance ! Posts: 555 Timisoara, Romania Gender:	Re: Voltmod guide to Voodoo5 5500PCI-Playing with fire Reply #1 - 06.10.13 at 07:32:20 Great research Komponent ! Maybe with a better cooling more than 190Mhz is possible ! Is this your card ?
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Komponent Senior Member Offline 3dfx modder Posts: 282	Re: Voltmod guide to Voodoo5 5500PCI-Playing with fire Reply #2 - 06.10.13 at 11:16:59 Yes, my card. 190+ Mhz not possible because of RAM. I'm not into overclocking, just did it for the fun of discovering a new mod.
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Komponent Senior Member Offline 3dfx modder Posts: 282	Re: Voltmod guide to Voodoo5 5500PCI-Playing with fire Reply #3 - 26.10.13 at 15:08:15 Update: RAM voltmod for V5 PCI So now you have both GPU and RAM voltmod guide for Voodoo5 5500 PCI. See pictures bellow: Voodoo4 AGP GPU voltmod: Voodoo4 PCI GPU and RAM voltmod: Maybe one day someone might find this work useful in assisting overclocking those cards...
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trevormacro God Member Offline Voodoo5k6 Gold SE, Legend & Mystical Edition Posts: 622 Gender:	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #4 - 26.10.13 at 22:18:27 Hi Komponent, What a nice guide. you are crazy with your voltmod. I like it. Continue with your great tips. Congratulations. Thanks
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m14radu God Member Offline Take your chance ! Posts: 555 Timisoara, Romania Gender:	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #5 - 27.10.13 at 16:39:37 thanks for sharing this info Komponent ! As always, amazing mods the next stept will be voltmod for a v56k
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Komponent Senior Member Offline 3dfx modder Posts: 282	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #6 - 27.10.13 at 16:48:52 Thanks, lads, If I had access to a 6000 it would be an easy task, though I wonder who would dare to voltmod his. On the other side, I would have loved to mod a 6000 to 256Mb or at least to see it done... A man can dream, right?
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m14radu God Member Offline Take your chance ! Posts: 555 Timisoara, Romania Gender:	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #7 - 27.10.13 at 17:11:53 it could become a reality just need to find a 6000 owner who is willing to do this... what about a voodoo3 voltmod or memory mod ? 32mb ?
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goriath

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Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI
Reply #8 - 27.10.13 at 22:05:43

m14radu wrote on 27.10.13 at 17:11:53:

it could become a reality

just need to find a 6000 owner who is willing to do this...

what about a voodoo3 voltmod or memory mod ? 32mb ?

AFAIK Avenger is limited to 16MB.
About the voltmod it has been done already, If I remember correct you need to install a potentiometer on the last two lead of the power regulator, I'll check...

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OLD SCHOOL: Because it was done right the first time

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Komponent Senior Member Offline 3dfx modder Posts: 282	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #9 - 28.10.13 at 05:51:08 Yeah, I might be wrong, but voltmods for Voodoo2, Banshee and Voodoo3 have already been done, AFAIK. 32Mb for Voodoo3 might be possible, for the PCI SGRAM model, but I do not own any such card.
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osckhar

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Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI
Reply #10 - 28.10.13 at 10:44:46

Well done komponent!!!

What I would do in VRam / Vcore is look for right smd resistor value for working voltage wished. It would be more cleaned work.

V3@32Mb- same problem here I dont own a common V3 PCI SGRAM for doing the mod. I guess it will work enabled second chip via bios. Similar V4 @128Mb.

V5-6000 @256Mb MOD- It will be done very soon. Just waiting for some stuff.

Regards,
Oscar.

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Komponent Senior Member Offline 3dfx modder Posts: 282	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #11 - 29.10.13 at 05:05:33 Hell yes! That's what I'm talking about! Finally someone has the balls to put forward a 6000.
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ultima God Member Offline Always searching Posts: 876 The Netherlands Gender:	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #12 - 29.10.13 at 06:58:35 I might have a voodoo3 pci sgram which you can use for the modding, I will check tonight and let you know.
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osckhar

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Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI
Reply #13 - 29.10.13 at 11:53:50

Before end of this year we will see a V5-6000 @256Mb. I already own a dead 6k for unsolder BGA chips and follow traces for strapping. Just I need to find some time free. Too much projects here!

komponent- do you want to go for V3 PCI @32Mb mod? If you go for this I have in mind a Banshee @32Mb. I have some idea what resistor are needed to set 16Mb with only 4 memory bank. Now looking for ELITME 4Mb 5.5ns per chip.

Regards,
Oscar

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m14radu God Member Offline Take your chance ! Posts: 555 Timisoara, Romania Gender:	Re: Voltmod guide Voodoo5 5500 PCI and Voodoo4 AGP&PCI Reply #14 - 29.10.13 at 12:29:34 V5 6000 @256mb - a dream come true
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