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July 8th, 2025 14:17
17 R1, gtx 1070m upgrade problem
So i have a problem that I need help with.
I upgraded my alienware 17 r1 2014 with a gtx 1070m with a 330w charger and my mosfet chips for the power connector were getting scorching hot and burned out when playing games.
I replaced the board with a new one but the problem persists
I tried the 240w charger but the are still hot.
I can't find anyone that had the same problem with the upgrade and to be honest I'm a little lost here and would need some help.
I was thinking of taking the laptop to my laptop technician and asking him to replace the chips in the new board with more powerfull ones if that would fix the problem
My specs are
Intel i7-4900MQ
Gtx 1070m (previously gtx 780m)
32GB RAM
330w charger
60hz screen
Motherboard 5RWOM 2XJJ7 41W46 LA-9331P
VAS00-01
Here is the picture of the old board with the burned chips
mattyb3
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1.6K Posts
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July 8th, 2025 22:37
I have had one 17 where the chips on the opposite side from where the DC jack plugs into the board burst into flames but that was a stock 17, no 1070 upgrade. I only ever put a 1070 into my M18x R2 and I haven't seen anyone with your exact issue after doing a 1070 upgrade.
Does it get hot without the 1070 installed? If you've tried different power supplies and different boards then it must be an issue with that 1070. It doesn't make a whole lot of sense though. Many people have done this upgrade and had good results.
Leorak.45
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July 8th, 2025 22:44
@mattyb3 I'll try and benchmark it tomorrow without the gpu but even if it's the problem I doubt that it will get hot enough without the gpu drawing power
I'll probably try to change the stock mosfet chips(SI7149DP) to upgraded ones(FDMC7660) that have better heat dissipation and are generally better because it looks like my board can't handle it for some reason
I also think the gpu is a 1070mxm
mattyb3
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1.6K Posts
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July 10th, 2025 01:03
The mosfets they started using in the 17 R1 and the 18 were far weaker than the ones in the previous systems. I've seem people blowing these boards up for many years. The 18's really had problems.
Still, you seem to be having a different issue than just that since lots of people have put 1070's in these laptops or even higher power draw cards without too much issue.
I hope you work it out.
Leorak.45
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3 Posts
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July 10th, 2025 01:16
@mattyb3 i tried unplugging the gpu and benchmarking the cpu for some time and they still got very hot
Not as hot when the 1070m was installed but still
Also I noticed that the top right mosfet chip is already starting to go because is turning a slight brown color so I stopped all testing altogether.
I definitely have to upgrade the mosfet chips but tbh I got no clue which ones I should put in that will fit and be enough to support my sistem
Also on the chips there are markings (6405 ba3k10) if that is any help
I just need help finding a good replacement