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GeForce GTX 980M voltage regulator mod


DoenerBoy123
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Hello guys,

 

I have some questions regarding the GeForce GTX 980M. I'm using this card for 2 almost two years now and it's still impressive how much power this card has, especially if you think about the age. I was first using this card in my M17x R4 until I got a M18x R2 for an outstandingly cheap price. I upgraded the M18x with the 980m from the M17x and everything worked fine. As the cooling is better than the 17 I flashed an unlocked vBios(svl7's bios) to get the full potential out of this card. This was working fine for the last two weeks until yesterday. I played GTA V for two hours. Temperature was fine and the card pulled around 110-120w. Then suddenly the screen went black and the overcurrent protection of the PSU(330W Dell/Delta) took place. After a few minutes of measuring I found the GPU, specifically one of the MOSFETs to be the culprit. I replaced the MOSFET with one I found on a K2100M I had lying around(it's the same part, CSD87350D). The card works perfectly fine again and beside the MOSFET luckily noting else was damaged.

 

Long story short: How much can the power stage withstand with three MOSFETs and does it make sense to add the other three "missing" ones? And how much current can the MXM port of the M18x R2 deliver without being damaged? 

Alienware Area 51 ALX R5 3600 32GB 3200MHz RTX 2080 Ti FE

Alienware M18x R2 I7 3840QM 4.2GHz 16GB 1600MHz GTX 1070(Zotac MXM, will add the missing MOSFETs to use the 115W MSI vBios)

Alienware M17x R4 I7 3630QM 16GB 1600MHz GTX 980M 8GB(modded to six MOSFET to increase the 'power limit')

MacBook Pro Retina I7 3820QM 16GB 1600MHz GT650M (for school)

And lot's of other stuff in my hobby corner (old Clevo's 'n' stuff like that)😄

 

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5 hours ago, DoenerBoy123 said:

Hello guys,

 

I have some questions regarding the GeForce GTX 980M. I'm using this card for 2 almost two years now and it's still impressive how much power this card has, especially if you think about the age. I was first using this card in my M17x R4 until I got a M18x R2 for an outstandingly cheap price. I upgraded the M18x with the 980m from the M17x and everything worked fine. As the cooling is better than the 17 I flashed an unlocked vBios(svl7's bios) to get the full potential out of this card. This was working fine for the last two weeks until yesterday. I played GTA V for two hours. Temperature was fine and the card pulled around 110-120w. Then suddenly the screen went black and the overcurrent protection of the PSU(330W Dell/Delta) took place. After a few minutes of measuring I found the GPU, specifically one of the MOSFETs to be the culprit. I replaced the MOSFET with one I found on a K2100M I had lying around(it's the same part, CSD87350D). The card works perfectly fine again and beside the MOSFET luckily noting else was damaged.

 

Long story short: How much can the power stage withstand with three MOSFETs and does it make sense to add the other three "missing" ones? And how much current can the MXM port of the M18x R2 deliver without being damaged? 

Due to the age of some details I do not remember too well, the complementary MOSFET is indeed useful, but do not expect it can work for a long time at high power consumption. The card's default state gives 110W of power consumption is relatively safe, different manufacturers of materials also vary so it is impossible to generalize. Replacement of better MOSFETs and inductors may be able to make it work at 130W, in fact I know someone really did, but in the end his 980M or burned up. There is a reference example, HP's P5200 C version is basically the end of this type of standard MXM card, it can withstand the maximum power consumption is 150W, more than this will burn, I have burned a P5200.

493769640_980mv2(2).thumb.jpg.8e817e8eb90d17a036f590abe4cbdb3f.jpg339371068_980mv2(1).thumb.jpg.caf99c9d6485f79808c03e97608b77e3.jpg1350549630_980mv2(3).thumb.jpg.cf796f73f43212c5963ad796a79f0616.jpg1422403314_P520004.thumb.jpg.6b9c8cc1c13ea904bbfcb1ac9791c0c5.jpg1458745782_P520001.thumb.jpg.c2b972d73ded398088ea2a990168f4af.jpg1320450905_p520003.thumb.jpg.a3f5049ccb624ca659c0ee8b79180683.jpg384639180_p520002.thumb.jpg.c6600ce346d243158b3e74c77ee4d07b.jpg

 

 

 

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yep classic tale of the 980M and its wimpy power delivery...im actually using a premamod vbios with an undervolt applied to the core to max 1.00V to curb the power consumption at stock and make the card last longer. not in the mood for a burned gpu...

Mine: Hyperion "Titan God of Heat, Heavenly Light, Power" (2022)
AMD Ryzen 9 7950X / Asus ROG Crosshair X670E Extreme / MSI Geforce RTX 4090 Suprim X / G.Skill Trident Z5 RGB DDR5-6600 2x16 GB / Seagate Firecuda 530 4 TB / 2x Samsung 860 Evo 4 TB / Arctic Liquid Freezer II 420 / Seasonic TX-1600 W Titanium / Phanteks Enthoo Pro 2 TG / Samsung Odyssey Neo G8 32" UHD 240 Hz / Ducky One 3 Daybreak Fullsize Cherry MX Brown / Corsair M65 Ultra RGB

 

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On 9/16/2022 at 7:25 PM, MS-16L13 said:

Due to the age of some details I do not remember too well, the complementary MOSFET is indeed useful, but do not expect it can work for a long time at high power consumption. The card's default state gives 110W of power consumption is relatively safe, different manufacturers of materials also vary so it is impossible to generalize. Replacement of better MOSFETs and inductors may be able to make it work at 130W, in fact I know someone really did, but in the end his 980M or burned up. There is a reference example, HP's P5200 C version is basically the end of this type of standard MXM card, it can withstand the maximum power consumption is 150W, more than this will burn, I have burned a P5200.

493769640_980mv2(2).thumb.jpg.8e817e8eb90d17a036f590abe4cbdb3f.jpg339371068_980mv2(1).thumb.jpg.caf99c9d6485f79808c03e97608b77e3.jpg1350549630_980mv2(3).thumb.jpg.cf796f73f43212c5963ad796a79f0616.jpg1422403314_P520004.thumb.jpg.6b9c8cc1c13ea904bbfcb1ac9791c0c5.jpg1458745782_P520001.thumb.jpg.c2b972d73ded398088ea2a990168f4af.jpg1320450905_p520003.thumb.jpg.a3f5049ccb624ca659c0ee8b79180683.jpg384639180_p520002.thumb.jpg.c6600ce346d243158b3e74c77ee4d07b.jpg

 

 

 


Thanks for the info! Have you just add the additional MOSFETs or did you replace all with matched ones?

Alienware Area 51 ALX R5 3600 32GB 3200MHz RTX 2080 Ti FE

Alienware M18x R2 I7 3840QM 4.2GHz 16GB 1600MHz GTX 1070(Zotac MXM, will add the missing MOSFETs to use the 115W MSI vBios)

Alienware M17x R4 I7 3630QM 16GB 1600MHz GTX 980M 8GB(modded to six MOSFET to increase the 'power limit')

MacBook Pro Retina I7 3820QM 16GB 1600MHz GT650M (for school)

And lot's of other stuff in my hobby corner (old Clevo's 'n' stuff like that)😄

 

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