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post #3211 of 4145
i Use Sapphire Trixx. bot not shure if is more then -100mV passible
post #3212 of 4145
Well just updating my situation if anyone's interested... I have sent a ticket to Gigabyte to see if they can offer any support or even info into why this 480 has locked voltage...
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post #3213 of 4145
Quote:
Originally Posted by Loladinas View Post

Mine\s Nitro as well wink.gif Here's my whole setup. It's good up to about 1.2-1.225V. I'll be trying to attach something bigger this weekend. I'm currently using simple zip ties to attach it, but it's not ideal (difficult removal) so I think I'll go to the hardware store and look for smallest bolts and nuts they have. It really was only supposed to be a temporary solution to see if it works at all, but it worked out well enough to keep it for the week. If you have any old CPU heatsinks (for example Socket A) laying around you can just cut those up to shape, place it on the card, paint drill marks with a sharpie through the mounting holes and you're nearly done.

It was on another thread.

Good Idea to cut an older heatsing to shape. What milimeters AxB have youended up with to cover the VRMs? One tricky thing I see is that they are not in a straight line, but on one end they make a turn forming a Γ shape (greek letter I don't know if it will show correctly on your screen, it is the greek capital Gamma)

What are your load VRM temps?
We must also keep in mind your temps will be a lot worse than possible on the vrm because the air has to pass through the thick gpu heatsink to reach the VRM heatsinks and airflow is minimized on them unless you crank up the RPMs (not to mention the air that reaches the VRM is hotter than ambient).
I noticed the huge impact this makes on my Raijintek Morpheus. I have this cooler from an older gpu but prefer to use the AIO cooler not only for the GPU watercooling but also because of this effect, I hated how bad the VRM temps were with the Morpheus
Edited by Blinky7 - 1/27/17 at 6:58am
post #3214 of 4145
Well I was doing some more research into my voltage issue, this card is supposed to have 6+2 phases. 1 of the vrm temperatures never goes above 30*C in hwinfo under load. Also it seems to back up that its the IR3567B but the tool I was provided says otherwise and MSI afterburner won't apply the voltages (It just jumps back to 0+ on applying no matter what voltage control I choose).
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post #3215 of 4145
Quote:
Originally Posted by Blinky7 View Post

Good Idea to cut an older heatsing to shape. What milimeters AxB have youended up with to cover the VRMs? One tricky thing I see is that they are not in a straight line, but on one end they make a turn forming a Γ shape (greek letter I don't know if it will show correctly on your screen, it is the greek capital Gamma)

What are your load VRM temps?
We must also keep in mind your temps will be a lot worse than possible on the vrm because the air has to pass through the thick gpu heatsink to reach the VRM heatsinks and airflow is minimized on them unless you crank up the RPMs (not to mention the air that reaches the VRM is hotter than ambient).
I noticed the huge impact this makes on my Raijintek Morpheus. I have this cooler from an older gpu but prefer to use the AIO cooler not only for the GPU watercooling but also because of this effect, I hated how bad the VRM temps were with the Morpheus
Here, I just disassembled the card again, to tinker some more, so a couple more pictures. I think that fastening another heatsink on the back side of VRM will improve temps in a meaningful way. It'd be getting some direct fresh air as well. The heatsink is 92mm long, 20mm wide on one side, 23mm wide on another, and 15mm wide in the middle.


I haven't done excessive testing, however with 1.225V at 1500MHz it stays around 70-75C while gaming, with ~20C air temp. I did push up to 1.3, then the highest recorded VRM temperature, with the fans running full speed and air intake being ~15C, after running Firestrike, Time Spy and Unigine Valley, was 77C. If I don't lower ambient temp at those voltages I get minor instability, once VRM temp would go over 80C.
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post #3216 of 4145
Thread Starter 
Quote:
Originally Posted by NeoReaper View Post

Well I was doing some more research into my voltage issue, this card is supposed to have 6+2 phases. 1 of the vrm temperatures never goes above 30*C in hwinfo under load. Also it seems to back up that its the IR3567B but the tool I was provided says otherwise and MSI afterburner won't apply the voltages (It just jumps back to 0+ on applying no matter what voltage control I choose).

You probably have the same VRMs or similar that my old 270x. They ID as IR3567B but most likely aren't and use different signaling and likely won't ever be unlocked. If that's the case you would have to manually edit voltage in a Hex Editor.
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post #3217 of 4145
Quote:
Originally Posted by Echoa View Post

Quote:
Originally Posted by NeoReaper View Post

Well I was doing some more research into my voltage issue, this card is supposed to have 6+2 phases. 1 of the vrm temperatures never goes above 30*C in hwinfo under load. Also it seems to back up that its the IR3567B but the tool I was provided says otherwise and MSI afterburner won't apply the voltages (It just jumps back to 0+ on applying no matter what voltage control I choose).

You probably have the same VRMs or similar that my old 270x. They ID as IR3567B but most likely aren't and use different signaling and likely won't ever be unlocked. If that's the case you would have to manually edit voltage in a Hex Editor.
Thats what I was thinking because I read up and the VRM's haven't got any built in method of controlling them like other VRM's. How would I go about changing the voltage? I just want to bump it up to 1.185 or 1.190 since thats all I will probably need to get this card to 1400 on the core. The Hynix memory is good on this card, hitting 1950mhz fine in wattman and according to hwinfo, no memory errors while looping unigine and playing bf4 and ark for a few hours.
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post #3218 of 4145
Quote:
Originally Posted by Loladinas View Post

Here, I just disassembled the card again, to tinker some more, so a couple more pictures. I think that fastening another heatsink on the back side of VRM will improve temps in a meaningful way. It'd be getting some direct fresh air as well. The heatsink is 92mm long, 20mm wide on one side, 23mm wide on another, and 15mm wide in the middle.


I haven't done excessive testing, however with 1.225V at 1500MHz it stays around 70-75C while gaming, with ~20C air temp. I did push up to 1.3, then the highest recorded VRM temperature, with the fans running full speed and air intake being ~15C, after running Firestrike, Time Spy and Unigine Valley, was 77C. If I don't lower ambient temp at those voltages I get minor instability, once VRM temp would go over 80C.

You have done a very good job with the heatsink! Looks great. The only thing I would change is since I wont have the massive cooler covering it, trying to build it with bigger height.
May I ask from what type of heatsink you started to cut it to your wished dimensions?
I disassembled my card as well for the first time, to fine that :
1) like yours it is missing 1 phase, the review pictures show all phase positions filled.
2) the length seems like 90-95mm and the width around 15mm except in the one corner with the additional vrm.

I havent checked my old heatsinks yet, but 100x100mm that would be a good starting point to cut from, seems a bit on tge large side.
You used dremel right?
post #3219 of 4145
Quote:
Originally Posted by Blinky7 View Post

You have done a very good job with the heatsink! Looks great. The only thing I would change is since I wont have the massive cooler covering it, trying to build it with bigger height.
May I ask from what type of heatsink you started to cut it to your wished dimensions?
I disassembled my card as well for the first time, to fine that :
1) like yours it is missing 1 phase, the review pictures show all phase positions filled.
2) the length seems like 90-95mm and the width around 15mm except in the one corner with the additional vrm.

I havent checked my old heatsinks yet, but 100x100mm that would be a good starting point to cut from, seems a bit on tge large side.
You used dremel right?
That heatsink was cut from a piece I had for LED light strip. It was 300x30x14 originally, so a pretty easy cut. Now I'm cutting a single piece to cover VRAM from a 92x92x15 block. Actually no, I'm drinking beer and cutting it by hand with a metal saw. It's a pain in certain body part. Afterwards I'll cut another piece to cover the VRM back, from another 92x92 block, as the one I had made previously is a bit small and it's protrusions run across the card, not along it, blocking airflow.

Yeah, the review Nitro had six phases, but retail cards are five phase designs. Sapphire has stated it's too expensive for them. To be fair Nitro is one the cheapest RX480 and 6 phases are somewhat overkill.
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post #3220 of 4145
Anyone got any idea still how I would go about adjusting this voltage? (Going by my past few posts)
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