Shunt Modded Asus Strix Scar 17 (2023) 4090 7945HX

[seanwee]

Finally upgraded from my GS75

 

Respread LM + changed stock thermal putty to Upsiren U6 Pro. Shunt modded gpu to 250w.

 

It's a beast.

 

[Izy]

wait what it can be shunt modded lmao

 

also how was removing the cooler safely?

i know that its liquid metal cooled, at least my scar 16 2017 is on both the 4080 and 13980hx

wouldnt mind chaning the thermal pads for more cooling

[seanwee]

16 hours ago, Izy said:

wait what it can be shunt modded lmao

 

also how was removing the cooler safely?

i know that its liquid metal cooled, at least my scar 16 2017 is on both the 4080 and 13980hx

wouldnt mind chaning the thermal pads for more cooling

Why wouldn't it be?

 

You definitely have to be careful when removing the heatsink. Asus's application method guarantees a lot would be spilled.

 

Re-spreading the LM definitely helps with temps. Hottest to coldest core temp delta went from 20C to 5C

 

 

I changed the stock blue thermal putty to upsiren u6 pro.

[ryan]

why?  shunt modding seems risky and won't improve performance much, i upped my tgp from 115w to 140w and it was risky barely see 3fps difference in games, if i had known that i wouldnt have done it as the temps are higher.

 

what gains did you get?

[seanwee]

10 hours ago, ryan said:

why?  shunt modding seems risky and won't improve performance much, i upped my tgp from 115w to 140w and it was risky barely see 3fps difference in games, if i had known that i wouldnt have done it as the temps are higher.

 

what gains did you get?

 

 

20-30% uplift vs stock. The more demanding the game, the greater the uplift. Frame stability is also improved as its not constantly throttling itself back due to power limits. Instead you get a locked 2610mhz.

 

As for your 3060, 115w is close to the end of its performance curve already. How often do you see it hit 140w?

 

Same goes with every card in the 40 series laptop except for the 4090 laptop. The 4050,4060,4070 don't even scale past 110w due to their tiny gpu.

 

The 4080 laptop also barely scales past 175w.

 

The performance of the 4090 is still capped by its 0.95v voltage limit unlike 1v with every other 40 series mobile so there's actually some more headroom to be tapped into.

[ryan]

yeah I had no idea the cards were capped at 110w, I see 130-140w constantly.  Does increasing the tgp with a shunt mod just automatically uplift the performance, or are you overclocking

[Izy]

yeah my 4080 on my rog strix scar 16 hits 175w peak.

 

but honestly the real bottleneck is the thermal throttling and power limit of the 13980hx

that things a beast in its own right, i am undervolting it already just to tame it slightly from stock

the fact it gets 34400 in cinebench atm on my pc vs a guy i know with a 10900k getting 13.4k is kinda insane, wouldnt mind putting on upro and maybe some more liquid metal to tame try and improve its temps, although it is peak summer atm and abients are much higher here

[ryan]

yeah im thermally limited with my 3060 and i7 11800h. might buy the honeywell phase change pads in a few days

[seanwee]

Cinebench R23 @140w

 

 

Hitting 108A TDC limit, just waiting for UXTU to support Dragon Range.

[ryan]

@seanweewow man, nice score. can't believe your beating a 32 core thread ripper. this is just insane and exciting times. one major issue though. no good games are coming out for like 6-12 months. and when they do come they are usually shoddy ports.

[seanwee]

15 minutes ago, ryan said:

@seanweewow man, nice score. can't believe your beating a 32 core thread ripper. this is just insane and exciting times. one major issue though. no good games are coming out for like 6-12 months. and when they do come they are usually shoddy ports.

Well it's a good thing I didn't play any of the RT games released since metro exodus.

 

Playing Cyberpunk 2077, spider man remastered and far cry 6 currently.

 

 

[ryan]

nice....

 

I just bought far cry 6, havent downloaded it yet!! any good?

[jaybee83]

9 hours ago, seanwee said:

Cinebench R23 @140w

 

 

Hitting 108A TDC limit, just waiting for UXTU to support Dragon Range.

 

nice, thats 96% of my 7950X at stock, quite impressive 🙂

 

hows the cooling going with the 250W gpu and the 140W cpu? can u keep it under control?

[seanwee]

On 7/13/2023 at 8:29 PM, jaybee83 said:

 

nice, thats 96% of my 7950X at stock, quite impressive 🙂

 

hows the cooling going with the 250W gpu and the 140W cpu? can u keep it under control?

With a custom cooling pad and maxed fans, prime 95 small fft + furmark the cpu hits 90C on the hottest core and gpu holds steady at 72C. 24C room temperature.

 

436w draw from the wall. Considering some power loss from the adapter, I'd say about 400w is going to the cpu+gpu. Pretty amazing cooling solution.

[jaybee83]

24 minutes ago, seanwee said:

With a custom cooling pad and maxed fans, prime 95 small fft + furmark the cpu hits 90C on the hottest core and gpu holds steady at 72C. 24C room temperature.

impressive. what kinda downclocking, if any, do you see on CPU and GPU?

[seanwee]

3 minutes ago, jaybee83 said:

impressive. what kinda downclocking, if any, do you see on CPU and GPU?

Cpu runs at 4.6ghz all core (hitting TDC limit 108A) at 131w

and gpu at 2565mhz so I guess there's some on the cpu but that's due to another factor.

[jaybee83]

20 minutes ago, seanwee said:

Cpu runs at 4.6ghz all core (hitting TDC limit 108A) at 131w

and gpu at 2565mhz so I guess there's some on the cpu but that's due to another factor.

yup amperage limit, could be hard programmed into the firmware to protect the mobo VRMs. laptop power delivery is usually designed very tightly around the utilized hardware.

[seanwee]

1 hour ago, jaybee83 said:

yup amperage limit, could be hard programmed into the firmware to protect the mobo VRMs. laptop power delivery is usually designed very tightly around the utilized hardware.

Not really, people have been cranking their 13980HX laptops from 150w to 200w+ no issue.

 

And if the Vrms were designed with no headroom, there would have been a crater in my motherboard long ago.

[jaybee83]

1 hour ago, seanwee said:

Not really, people have been cranking their 13980HX laptops from 150w to 200w+ no issue.

 

And if the Vrms were designed with no headroom, there would have been a crater in my motherboard long ago.

with the all soldered mobos the power delivery is usually designed for both cpu and gpu. so just cranking one of the two wont have much impact 🙂 thats how they design rhat whole power boosting / balancing thing, as well, combine cooling and power capacities to use whatever is best in a specific scenario (gpu for gaming, cpu for productivity).

[seanwee]

7 minutes ago, jaybee83 said:

with the all soldered mobos the power delivery is usually designed for both cpu and gpu. so just cranking one of the two wont have much impact 🙂 thats how they design rhat whole power boosting / balancing thing, as well, combine cooling and power capacities to use whatever is best in a specific scenario (gpu for gaming, cpu for productivity).

Not exactly, the whole power budget thing is just a design choice. They set a static parameter that allows the gpu to boost further depending on cpu power.

 

For example (55w) cpu + (150w) gpu + 25w being balanced between cpu and gpu with power priority being given to the cpu.

 

On msi laptops we can trick the system by changing the imon slope so the system thinks the cpu is always using less than 55w to the 25w extra always goes to the gpu.

 

You can definitely crank both (provided the Vrms can handle it) though I've seen motherboards where even a bit of shunt modding will overload the gpu Vrms. The cpu vrm is always overbuilt in gaming laptops.

 

 

The Strix scar 17 is supposed to have a combined power budget of 240w (65 cpu 175 gpu) yet here I am doing 400

[1610ftw]

I see you upped may power uptake for both CPU and GPU by 75W each - not sure that Asus will approve 😄

Is your 600W power supply still in a laptop type form factor like the Eurocom version or is it something entirely different?

 

In any case your project gives a very good idea of what would be possible if manufacturers got serious again with laptops but currently they are not even willing to increase total system power beyond the standard 330W brick. MSI supposedly was allowing a higher power draw of something like 400W with the GT77 for a while but when they noticed it they released a new bios to limit the unit to a total of 330W again- gotta protect that 330W power supply. Obviously this is ridiculous as such a unit could take any combination of power supplies from something like 240W for light travel to 2 x 330W for stationary use - no problem with that.

 

 

[seanwee]

1 minute ago, 1610ftw said:

I see you upped may power uptake for both CPU and GPU by 75W each - not sure that Asus will approve 😄

Is your 600W power supply still in a laptop type form factor like the Eurocom version or is it something entirely different?

 

In any case your project gives a very good idea of what would be possible if manufacturers got serious again with laptops but currently they are not even willing to increase total system power beyond the standard 330W brick. MSI supposedly was allowing a higher power draw of something like 400W with the GT77 for a while but when they noticed it they released a new bios to limit the unit to a total of 330W again- gotta protect that 330W power supply. Obviously this is ridiculous as such a unit could take any combination of power supplies from something like 240W for light travel to 2 x 330W for stationary use - no problem with that.

 

 

That was one of the reasons I moved away from msi. They impose a total device power limit in the EC.

 

I ran into that limit in my previous laptop the MSI GS75 which limited how far I could push the 2080 Max-q.

[1610ftw]

20 minutes ago, seanwee said:

That was one of the reasons I moved away from msi. They impose a total device power limit in the EC.

 

I ran into that limit in my previous laptop the MSI GS75 which limited how far I could push the 2080 Max-q.

 

Indeed, pretty stupid behaviour.

 

I think their latest models with 400+W power limits were the dual power supply GT75 with the 9980HK CPU and the 2080 and then later the GT76 that went up to the 9900K and 10900K CPUs. Now that we have CPUs and GPUs that would scale very well they only allow for 250W combined CPU and GPU power as if it was something to be happy about... 

[seanwee]

Top score for firestrike

 

https://www.3dmark.com/fs/30433111

[Izy]

well wont be doing this anytime soon, either my power cap/fets went pop or my gpu mosfets went pop.

 

also i did was load ratchet and clanks settings menu ingame with a safely undervolted cpu then got a nice keyboard flash and no longer boots.

 

time for RMA or ebay return.

 

although i would totally get the strix scar 17 if it had mini led, that screen is way too nice