Thursday, February 11th 2021

ASUS ROG Zephyrus Duo 15 Owners are Applying Custom GPU vBIOS with Higher TGP Presets

With NVIDIA's GeForce RTX 30-series lineup of GPUs, laptop manufacturers are offered a wide variety of GPU SKUs that internally differ simply by having different Total Graphics Power (TGP), which in turn results in different clock speeds and thus different performance. ASUS uses NVIDIA's variant of GeForce RTX 3080 mobile GPU inside the company's ROG Zephyrus Duo (GX551QS) with a TGP of 115 Watts, and Dynamic Boost technology that can ramp up the card to 130 Watts. However, this doesn't represent the maximum for RTX 3080 mobile graphics card. The maximum TGP for RTX 3080 mobile goes up to 150 Watts, which is a big improvement that lets the GPU reach higher frequencies and more performance.

Have you ever wondered what would happen if you manually applied vBIOS that allows the card to use more power? Well, Baidu forum users are reporting a successful experiment of transforming their 115 W RTX 3080 to 150 W TGP card. Using GPU vBIOS from MSI Leopard G76, which features a 150 W power limit, and applying it to the ROG's Zephyrus Duo power-limited RTX 3080 cards is giving results. Users have successfully used this vBIOS to squeeze out more performance from their laptops. As seen on the 3D Mark Time Spy rank list, the entries are now dominated solely by modified laptops. Performance improvement is, of course, present and it reaches up to a 20% increase.
However, that doesn't mean you should just run and flash your laptop GPU with power-hungry vBIOS. Laptop manufacturers have chosen a specific vBIOS TGP configuration because a laptop can only sufficiently cool and supply a GPU with the power it was intended to run. Power bricks (laptop PSUs) are at risk of possible overloading and a GPU could potentially burn due to insufficient cooling and VRM configuration. This modification is voiding your warranty as well, and it could run your laptop unusable, so be careful.
Source: VideoCardz
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10 Comments on ASUS ROG Zephyrus Duo 15 Owners are Applying Custom GPU vBIOS with Higher TGP Presets

#2
TechLurker
I'm curious if part of the power increase is partly possible thanks to the more efficient Ryzen APU leaving some power headroom for the GPUs, or if CPU doesn't matter and it's just that coincidental that modded Ryzen APU laptops are taking the lead in the lists.
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#3
Cheeseball
Not a Potato
I just got a Zephyrus G15 GA503QR (RTX 3070, 80W to 100W) to replace my Eluktronics MAX-15 (RTX 2070 Mobile 115W). I'm seeing a nice FPS improvement with Warzone due to the better CPU and GPU combination: An average of around 100 FPS on the MAX-15 but a very nice 143 FPS with the G15, same graphics settings, both on their Quiet mode plugged-in.

On the same Baidu forums, I see people with the same GA503QRs doing some 115W and 130W flashing for the RTX 3070. Tempting.
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#4
HD64G
Miners probably
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#5
the54thvoid
What's the cooling capacity of these laptops? I mean, they might be able to boost up to a higher TGP but at what thermal cost and is it tolerable to the system?
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#6
Cheeseball
Not a Potato
TechLurker
I'm curious if part of the power increase is partly possible thanks to the more efficient Ryzen APU leaving some power headroom for the GPUs, or if CPU doesn't matter and it's just that coincidental that modded Ryzen APU laptops are taking the lead in the lists.
I believe the GPUs in these may not be directly hooked up to the Vega iGP as these lack Advanced Optimus and a MUX switch, so the vBIOS can be flashed easily compared to a Intel/NVIDIA combo. If someone else could shine light on this that would be great.

the54thvoid
What's the cooling capacity of these laptops? I mean, they might be able to boost up to a higher TGP but at what thermal cost and is it tolerable to the system?
I'm getting around a max of 70C to 75C when playing Warzone at 1440p on mine. Fans are running like a train, as expected. 97% to 100% GPU usage on the RTX 3070 with CPU usage around 58% on the 5900HS (I have Discord and OBS running in the background, but not recording/streaming).
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#7
_L_
the54thvoid
What's the cooling capacity of these laptops? I mean, they might be able to boost up to a higher TGP but at what thermal cost and is it tolerable to the system?
Looking at those 3DMark runs, they seem to run 72/77C seemingly with no information about ambient - I'd imagine the real concern would be whether the VRM is built well enough to handle the increased current.
(www.3dmark.com/spy/18220746)
(www.3dmark.com/spy/18049153)
I suppose the other disadvantage is that it'll impact CPU temps though there is no information about CPU temps in that 3DMark score.
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#8
Caring1
As I forewarned, we will soon have threads asking about flashing a new RTX Bios on laptops.
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#9
DeathtoGnomes
so be careful
You say This after you've shown the kid in the candy store all the candy and than you tell him not to eat the candy because it'll give him a tummy ache. Like your mother telling you to becareful and not fall and you fall as soon as she says that.

AIB's have lost their creative juices here. Gee, lets piss off ASUS and use a BIOS from MSI.... :rolleyes:
Caring1
As I forewarned, we will soon have threads asking about flashing a new RTX Bios on laptops.
and lots new "I bricked my BIOS, how do I fix it?"
Posted on Reply
#10
Xenshen
Cheeseball
I just got a Zephyrus G15 GA503QR (RTX 3070, 80W to 100W) to replace my Eluktronics MAX-15 (RTX 2070 Mobile 115W). I'm seeing a nice FPS improvement with Warzone due to the better CPU and GPU combination: An average of around 100 FPS on the MAX-15 but a very nice 143 FPS with the G15, same graphics settings, both on their Quiet mode plugged-in.

On the same Baidu forums, I see people with the same GA503QRs doing some 115W and 130W flashing for the RTX 3070. Tempting.
Can you link me to those forums I have the same laptop as you and I want to squeeze that extra performance. When I took the laptop apart I noticed they used liquid metal on the CPU and now I've applied liquid metal to the GPU and temps are very much lower around the 68 using 100 watts. Mind u max fan power and I have the laptop flipped upside down for max air flow
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