Reworking TDP?

[Ragnaraz]

OK so I have an A15 5800H RTX 3070.
I forget what my CPU TDP is, but I know my GPU is capped at 95w I believe.

If my reading serves me correctly all 3070 chips are equal (within reason) and the TDP is what actually limits it's capabilities as say if there's a max draw of 200w the other 105w is spoken for. I have found during gaming my CPU goes a bit nuts, gets hot, yet doesn't actually use all it has to offer.
I read somewhere Ryzen controller can allow you to rework TDPs of these things, if that is the case, if I dropped 5-10w from my CPU to lower temps could I raise the TPD of the GPU to allow higher stable clocks?

I understand if I do that the GPU will get hotter, but I'm already on the move with updated thermal solutions there. I have seen a few things going on about flashing different BIOS settings but there's no guarantee it would work safely as the mother board was likely designed around a max of 200w. That and the BIOS would need to be compatible blah blah...

Is this actually possible?

 

[wlsmith1985]

I have the Asus Rog strix scar g733qsa which has a rtx 16gb 3080 in it which is 130 tgp as standard have flashed a msi ge76 raider bios that is 155tgp onto the gpu been running it like this probably for around 2 to 3 months now with no issues. It is possible you will be able to find a bios for it on techpowerup just make sure you keep a backup of your existing gpu bios. All laptop tgp currently only go up to 165w currently motherboard will most likely be fine but its a risk you take. Ive been playing games such as cyperpunk, hitman 3 and resident evil village no crashes and temps for gpu sitting around 85 max.

 

[Jimbo Mahoney]

What you're describing is partially true, but there are two limits on the GPU power:

1) Permanent / upper limit defined by the vBIOS.
2) Temporary / dynamic limit defined by the total power draw at any moment in time.

So it depends what you're currently limited by.

I'll give an example from my Ryzen Legion 3070 with 130W vBIOS (apologies if you are already aware of how this works):

If I run a GPU-only stress test, I can see the power draw in MSI Afterburner shoot straight up to 130 W (interestingly, when I first got the laptop, it only went to something like 125W, but an nVidia driver update resolved that).
If I then run something like Prime95 to stress the CPU, which will temporarily go to something like 90W (I forget the exact values), then I'll see the GPU power drop to something like 110W.

However, what I think you're suggesting / hoping is that if you limit the CPU TDP, then you'll get more GPU power.

This is only true if you're seeing major TDP throttling on the GPU.

In my experience (2060 85W vBIOS flashed to 115W; 3070 w/Ryzen and 3070 w/i7), the GPU vBIOS is the only limit of interest.

I've not managed to get more performance from benchmarks or games by using things like ThrottleStop (Intel) or AMD APU Tuning to limit the CPU TDP.

In addition, I've found that the limits on all three laptops have been:

1) CPU thermally limited (especially i7. The Ryzen is probably the "coolest")
2) GPU power limited
3) Total power limited in stress tests, but not games or benchmarks

Repasting has helped with issue #1 and vBIOS flash has helped with issue #2, although I've not bothered with the 3070s because I believe the max vBIOS available is 140W and both mine are already at 130W.

The 2060 was very worthwhile flashing because at stock, it was only 85W, so 115W was quite a boost.

 

[Ragnaraz]

@Jimbo Mahoney
Man, I wish I could get another 10W or so out of my GPU. My power block is 200w, and I have seen a 240w version too.

Thermally, I've overhauled my laptop massively and it's due a repaste because ASUS suck... anyway, my thermals are now much better. If my mobo and VRMs could deal with a 110w draw the extra 15w of power sould be a nice gain on the A15. Not surprised OC dropped it from their line up the FA506QR is a **** show.
Im going to make another thread on here about my journey so people can read and maybe take something from it.