normal.. 648 DDR effective..

most Gecube cards use voltage dividers to determine the ram voltages...click my siggy....

btw...i got 48XX pts in 3dmark03 with my Gecube 9550GT 600/290 with ultra tight timing. i drop most of the timing to the lowest settings that rabit allowed....

here's my timing:



This post has been edited by Shah81: May 21 2006, 09:08 PM

my last 2 years benchie...the highest i can get...then after few months receive artifacts...aaaii... i use coolviva cooling....n dna driver...


until now still using r96pro...maybe after final exam...will try push again....

This post has been edited by paan: May 21 2006, 09:15 PM

Wow... that's real sweet. I got mine cheap, but I found out it only runs at DDR400 effective.

Is your video card using BGAs or TSOPs? Based on your speed and timings, most probably it must be BGA.

What's the AGP Booster mod for? Any differences after the mod? I'll check out your guide and see if it's compatible with my card. The big problem is, my card doesn't use the reference design, nor it uses the higher-end Gecube design which everyone commonly uses. Example, my card only has one voltage controller for the memory and GPU.
Hmm... everyone seems to use the unofficial DNA drivers. I thought they were only good for benchmarking. Might want to try that later.

Shah81,

You said that you tried different BIOSes for your 9550GT card. Doesn't the memory brand have to match with the BIOS together? Just a question.

My video card pics:

my ram is TSOP and with that timing at 290MHz i need to pump 2.75V to the ram to keep the tight timing. with slower timing, 290MHz can be achived at 2.6V.

this mod is done to give more current to your AGP slot for graphic cards that dont have their own dedicated power connectors like the 9600XT does. my GPU is running at 1.6V to get to 600MHz. before the mods, anything above 1.5V will not be stable....the 3.3V reading on my AGP slot will droop alot. now my AGP voltage is 0.01V lower than my PSU 3.3V rails and i can use 1.6V on my GPU.


give me a high res picture of your card both front and back and i'll try to help you with the mods.

oh ok...so you upload your pic already...

the circle 1 & 2 are the possible location for your Vmem. one of them will be your Vddq. so what i need you to do is that a close-up picture of those circles. make sure you use a good camera...i need to see the connections and if possible the markings on those components. (use hig res...3mp and up and oh, use thumbnail.. )





This post has been edited by Shah81: May 21 2006, 10:36 PM

Got the pictures. Hope it's clear enough.

ok before i start anything.....do you have a multimeter?? because if you dont have one i wont help..sorry

Unfortunately, I don't have one right now... I could get it from my friend, but I can't do it by tonight... only by next week.

Thanks loads Shah81, it's seriously very helpful of you. I only want a temporary mod, because I'm not very good in soldering, and I can't find the necessary components (eg. pots).

Once again, thanks.

so you wanna do the mod or not??.... i thought you're good with soldering. your siggy looks impressive with VDD Mod + Vdimm Mod + Vcore Fluctuation Fix.

btw....the multimeter will be used later. not tonight

This post has been edited by Shah81: May 21 2006, 11:24 PM

I'm all for it. Only the problem is, finding the right parts for the mod might be quite hard for me, and I'm also afraid that I have to trouble you.

About the soldering part, let's just say that my soldering skills are not as good as yours.

no problem for me...this mod is simple. i figured it out already. now only need a multimeter and pot to make it work

the parts you can buy from any electronics shop. nothing fancy....normal pot should work just fine.

oh...btw...have you find the point where to measure your Vgpu. if not i can show you where it is

By all means, please show me.

I recently did the GPU pencil vmod based on Adrian's Rojakpot website, and it worked. The only problem is now that I don't know how much voltage is going to my core (I just penciled the IC according to the guide).

One thing I realised, when I penciled more on the voltage controller, it seemed that my memory overclocking went slightly higher. Any ideas on this? Perhaps it's linked together?

Pardon me if there's any noobish questions. I'm not very familiar with electronics...

This post has been edited by colinwong89: May 21 2006, 11:39 PM

ok in the box no.2, there will be two soldering point. you can measure the voltage at any of these point. if you're on stock cooling, i suggest you stay below 1.5V.



this is normal....it got nothing to do with gpu voltage but more related to your gpu speed. sometime higher gpu will result in a lower mem speed and vice versa. u just have to find the best combo of gpu vs mem speed.
for 9600, i suggest you max out your mem speed first and then work your gpu.

Okay, I'll check it once I get a multimeter.

I'm not really running on stock cooling, more like modified stock cooling. Used Arctic Silver, lapped the heatsink to 2000grit and replaced the stock fan with a better Sunon 40mmx40mm fan.

Will be getting a few heatsinks for the TSOPs by this week too, if possible.

Is it required to sink the MOSFETs too? The only four I see is the three at the front and the single one at the back.

Double posted.

This post has been edited by colinwong89: May 22 2006, 12:18 AM

heatsink for the TSOP..yes and a must when voltmodding.
heatsink for the MOSFET...optional. they dont really get hot on my card even after voltmod.

you can cut up a large heatsink to be used on your rams. report here once you got a multimeter. i'll give instructions on how to voltmod your vmem. hopefully i can come up with a pencil mod.

cheap copper ram sink HERE

This post has been edited by Shah81: May 22 2006, 12:18 AM

Alright, I got it. Anything else I need to get besides the multimeter?

As for the heatsinks, I don't have any professional tools, and all the heatsinks have a seriously thick base, so I don't think my cheapskate tools would do the job.

I'll get the heatsinks from uglyvamp soon.

What he mean was, when he penciled the gpu voltage controller the mem speed can go higher. Not that that increasing the gpu core would result in lower mem clock.

This is normal when u give more voltage to the gpu, slightly higher mem speed can be achieved.