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550W Bios on XFX Speedster Merc310 7900XTX?

T

TechPuppy

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Joined
Dec 1, 2024
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Hello all! I'm new here so please go easy on me! I recently got the XFX Merc310 7900XTX for Black Friday sales, upgrading from a 3060ti founders so quite the upgrade! I've taken notice of this supposed 550W bios going around, talked about on here and on reddit. I'm quite interested to do this to my card, but I cannot get a clear answer on what I need to do to achieve this. I've read you need to solder, then I've read you can just use a clamp and clamp it to the bios chip, and then I've also read you can just use the amdvbflash tool. Can someone give me a clear answer on what I need to do for my specific card? It is a dual bios gpu (switch towards the io is the less power one and towards the rear is
the higher power limit one from what I know.) I will include a screenshot of GPU-Z if that helps. Any help is greatly appreciated!!
gpu-z info.gif
 
Get a screen shot of both switch positions in GPU-Z, that means restarting your system when you switch from 1 or the other. And a pic of the white pn/model number sticker please. While youre at it go into the advanced tab of gpu-z and post screenshots of each item in the context menu with the V by it.

Also please click on the black arrow next to the uefi checkbox and attempt to upload the bios for 1 position then the other position to the vga bios collection, you might get a prompt about the files being in the collection already with a link, copy and paste those links here.

If you dont get that prompt, be detailed about what specific model number your card is and what bios switch position the file came from, then post those links here.

TechPuppy said:
Hello all! I'm new here so please go easy on me! I recently got the XFX Merc310 7900XTX for Black Friday sales, upgrading from a 3060ti founders so quite the upgrade! I've taken notice of this supposed 550W bios going around, talked about on here and on reddit. I'm quite interested to do this to my card, but I cannot get a clear answer on what I need to do to achieve this. I've read you need to solder, then I've read you can just use a clamp and clamp it to the bios chip, and then I've also read you can just use the amdvbflash tool. Can someone give me a clear answer on what I need to do for my specific card? It is a dual bios gpu (switch towards the io is the less power one and towards the rear is
the higher power limit one from what I know.) I will include a screenshot of GPU-Z if that helps. Any help is greatly appreciated!!
View attachment 373964
Click to expand...

Can you provide a link from tpu about this pegasus unicorn bios?

Plus reddit?

From what I can see is max power level for performance is 339W PPT and minimum is 327W PPT.

Be advised that if you go and do a 550W bios you will need a cooling solution that can handle that kind of power draw due to the chip getting excessively hot.

If it were me I'd leave the expensive new toy card alone and enjoy it instead of breaking it with a bad bios flash.

Before you mod it let the warranty run out on it next year or 2 so that way if it fails before then you can rma it without paying for the rma itself

@VuurVOS @Imperator
 
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Is this card for gaming or overclocking and benchmarking? If you're only into gaming I'd suggest leave it. You'll have to disassemble the card and optimize the cooling at the very least.
 
Frick said:
Is this card for gaming or overclocking and benchmarking? If you're only into gaming I'd suggest leave it. You'll have to disassemble the card and optimize the cooling at the very least.
Click to expand...
It is for gaming, I keep hitting the 465w limit though, I NEED MORE POWERRRR
 
@TechPuppy
I wouldn't flash the card. Losing warranty for minor performance improvement is the main reason.
 
Gonna fry the card for a tiny improvement. Even with my Red Devil I'd never risk this dumb stuff.
 
You want more Performance? Click the button from Global Experience to Hyper Rx under the Game tile on the Homepage of AMD Softawre. I can see from that 465 that you have turned the power limit all the way up too.
 
wrong forum for overclocking advice tbh

The card will not blow up for sure, people do EVC and push more than 700W.

The card thermal protections work, no stress about that, that's not an old Duron CPU and then all your efforts will end there, such modifications are for people using water cooling, not air. Forget about heavy OC using stock, you will gain negative results at certain point. Moderate power target around 400W is your best pick.

If you still insist.

Carefully pick your vbios and be prepared for brick, even I had unexpected behaviors rolling various vBIOS versions, I did it by changing SPI ICs, leaving the original intact and flashed blank ones and found many vBIOS versions in TPU database does not boot the card actually, I could not figure out the culprit really, some worked some not, it may depend how the backup was made, at least the were discussions about it, but there is more, on fist boot the card does some alterations to the ROM, I was too lazy to look for the fields, but the checksum file changed before and after booting it, even with failed boot, just found first needed SKU and then updated higher version using normal winflash.
 
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TechPuppy said:
It is for gaming, I keep hitting the 465w limit though, I NEED MORE POWERRRR
Click to expand...
If you insist on doing this, you need to read through the tpu thread you provided and this 1 https://www.techpowerup.com/forums/...-bios-into-nitro-success.325943/#post-5345740

Heed what is written in both threads and think it through- you need a spi flasher, I believe a Green PCB unit @VuurVOS correct?

You really aren't gaining much more. Also I suggest you go with a complete cover waterblock- I believe alphacool make them for all kinds of cards. Also a pump that isn't flowing too fast, a reservoir and a Radiator with high quality fans, anti algae antifreeze/coolant. Make sure all metals are compatible to avoid galvanic corrosion which can at worse case lead to leaks

Also Flash only 1 switch side, not both for failsafe reasons
 
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Also ask the 2 that did this on these forums about performing the procedure, they can guide you.

-signing off-
 
You've been warned. You will gain nothing without extreme cooling.


Title of next Post: "Is my GPU fried?"

Title of next post after that: "How do I put this 550w bios on my 3060ti?"
 
TechPuppy said:
Hello all! I'm new here so please go easy on me! I recently got the XFX Merc310 7900XTX for Black Friday sales, upgrading from a 3060ti founders so quite the upgrade! I've taken notice of this supposed 550W bios going around, talked about on here and on reddit. I'm quite interested to do this to my card, but I cannot get a clear answer on what I need to do to achieve this. I've read you need to solder, then I've read you can just use a clamp and clamp it to the bios chip, and then I've also read you can just use the amdvbflash tool. Can someone give me a clear answer on what I need to do for my specific card? It is a dual bios gpu (switch towards the io is the less power one and towards the rear is
the higher power limit one from what I know.) I will include a screenshot of GPU-Z if that helps. Any help is greatly appreciated!!
View attachment 373964
Click to expand...
Well?
 
TechPuppy said:
Hello all! I'm new here so please go easy on me! I recently got the XFX Merc310 7900XTX for Black Friday sales, upgrading from a 3060ti founders so quite the upgrade! I've taken notice of this supposed 550W bios going around, talked about on here and on reddit. I'm quite interested to do this to my card, but I cannot get a clear answer on what I need to do to achieve this. I've read you need to solder, then I've read you can just use a clamp and clamp it to the bios chip, and then I've also read you can just use the amdvbflash tool. Can someone give me a clear answer on what I need to do for my specific card? It is a dual bios gpu (switch towards the io is the less power one and towards the rear is
the higher power limit one from what I know.) I will include a screenshot of GPU-Z if that helps. Any help is greatly appreciated!!
View attachment 373964
Click to expand...
Please do yourself a favor and test the card first before you mess with it for +1-2% performance at best (mostly lower).
Between the 2 existing VBIOSs on the card and the power slider in adrenalin you can test the card probably between 320 and 465W.

You can track at what power setting the card is, with HWiNFO64 sensors mode.
The sensor you're looking for is "GPU PPT Limit (Short)".

Without touching anything else set the card at 325, 350, 375, 400, 425, 450W and run
1. multiple GPU synthetic benchmarks
2. multiple game benchmarks
3. multiple actual gaming

Write down what FPS you're getting on each power settings and calculate the % of performance increase between them.
I'm giving you the % increase in power.

325W + 7.7% >> 350W
350W + 7.15% >> 375W
375W + 6.67% >> 400W
400W + 6.25% >> 425W
425W + 5.89% >> 450W

The point is to compare actual power increase % to actual performance increase % between each step.
You can even make a graph and see it visually for better understanding.

If you do this and you still think its worth it then go and risk your multi-hundred $ card.

I can tell you right now its not worth it past ~400W. More power wasting and heat increase is all you will get at the end.
Your best bet to increase performance is to tune the card with "Voltage" and "Max Frequency" sliders within the 370~400W power level.

I've settled for ~375W with max hotspot temperatures (GPU/VRAM) around 75C and 55% fan speed (ambient 23C)

1733192656980.png
 
Zach_01 said:
Please do yourself a favor and test the card first before you mess with it for +1-2% performance at best (mostly lower).
Between the 2 existing VBIOSs on the card and the power slider in adrenalin you can test the card probably between 320 and 465W.

You can track at what power setting the card is, with HWiNFO64 sensors mode.
The sensor you're looking for is "GPU PPT Limit (Short)".

Without touching anything else set the card at 325, 350, 375, 400, 425, 450W and run
1. multiple GPU synthetic benchmarks
2. multiple game benchmarks
3. multiple actual gaming

Write down what FPS you're getting on each power settings and calculate the % of performance increase between them.
I'm giving you the % increase in power.

325W + 7.7% >> 350W
350W + 7.15% >> 375W
375W + 6.67% >> 400W
400W + 6.25% >> 425W
425W + 5.89% >> 450W

The point is to compare actual power increase % to actual performance increase % between each step.
You can even make a graph and see it visually for better understanding.

If you do this and you still think its worth it then go and risk your multi-hundred $ card.

I can tell you right now its not worth it past ~400W. More power wasting and heat increase is all you will get at the end.
Your best bet to increase performance is to tune the card with "Voltage" and "Max Frequency" sliders within the 370~400W power level.

I've settled for ~375W with max hotspot temperatures (GPU/VRAM) around 75C and 55% fan speed (ambient 23C)

View attachment 374203
Click to expand...
User hasn't been back on for 30hours already, probably didn't like getting the answer it was given.
 
No no don't worry I'm here, I just keep forgetting to check when I'm on my pc. I will reluctantly take the advice and leave well enough alone. I personally do not think the thermals would be an issue since the hottest my card gets is like, 55c~ pulling 460w so I feel like I have enough headroom (thats not even fans with 100% either) but if you guys say I will go from 150fps in games to 153fps while putting my card in serious danger, I will leave it be. I do appreciate the advice and help though, seriously! <3

DirtyDingusMcgee said:
You've been warned. You will gain nothing without extreme cooling.


Title of next Post: "Is my GPU fried?"

Title of next post after that: "How do I put this 550w bios on my 3060ti?"
Click to expand...
That one made me laugh quite a bit haha, love that
 
TechPuppy said:
No no don't worry I'm here, I just keep forgetting to check when I'm on my pc. I will reluctantly take the advice and leave well enough alone. I personally do not think the thermals would be an issue since the hottest my card gets is like, 55c~ pulling 460w so I feel like I have enough headroom (thats not even fans with 100% either) but if you guys say I will go from 150fps in games to 153fps while putting my card in serious danger, I will leave it be. I do appreciate the advice and help though, seriously! :love:
Click to expand...
Thanks for heeding and not breaking your expensive toy.
 
Since the thread is already started, I will ask, is there ANYTHING I can do to push the card harder? Safely that is? Again, I keep hitting that hard 460w power limit, but temps really are not an issue. I have an H9 Flow case, 3 bottom intakes, 3 side intakes, normal exhaust on the back and 3 exhaust from my 360mm aio (cpu is a 12900k). Case is sitting off the ground by some 4x8s I cut down to measure the width of the case so that the bottom intakes aren't choked out. Idk if I hit silicon lottery or what but gpu fans not even halfway speed on a furmark stress test, I hit the power limit and the hottest the card gets is 60c, usually in the 50s though. I also do tend to keep it cooler in my room to give it an even better chance.
eidairaman1 said:
Thanks for heeding and not breaking your expensive toy.
Click to expand...
 
TechPuppy said:
It is for gaming, I keep hitting the 465w limit though, I NEED MORE POWERRRR
Click to expand...
RDNA3 does not scale with power at all and without a high end custom loop this card will probably last you half a year before it blows up.

7900XTX OC.png
 
Not really outside of getting a water block. Just enjoy the card.
 
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