Clevo X170SM-G and X170KM-G RTX MXM 3.0 and 3.1 compatibility issues

[SuperMG]

Hello.

 

This could be the best upgrade ever in MXM terms if someone can help me.

 

I tested the RTX 4070 MXM and RTX 3080 (X-VSION) without any heatsinks to see if it displays something on the X170SM-G.

 

 

Nothing. Backlight mod is on. I can change the brightness of the display but there's nothing on the screen.

 

Both of the cores are cold in the touch.

 

These GPU worked in a P775TM1, M17X R4 120Hz and P870TM1 (Also the Precision M4800 with the 4070).

 

These P775 and P870 work with any RTX 20XX and 30XX from Clevo. So they use eDP in DP_D like on the X170SM-G, meaning they are electrically compatible. 

 

So my 4070, 4090 are working in my P775TM1.

 

The RTX 3080 Clevo also works in my P775TM1. 

 

So what's the catch there? If SM/KM Clevo cards work in P870/P775, in reverse, why can't standard MXM cards work in the X170?

 

Even my Quadro P3000 UEFI doesn't display. The laptop refuses to boot with it but with the RTX 4070 and 3080 it boots (no display).

 

That could actually help me answer some questions:

Did any of you try a standard MXM 3.0/3.1 card like a GTX 1070, GTX 980M UEFI, Quadro P3000, P4000, P5000 in the X170 laptop?

 

If none of you can't get these cards to work in the SM-G then what's wrong? Help please.

Will the KM accept the standard RTX, Quadro better than the SM-G?

 

 

This X170SM motherboard I was using has an issue with the dual channel and it's coming from the PCH, so are the PCIE PEG lines impacted? It displayed with an RTX 3080 Clevo before..

 

I hope I didn't waste tons of money in the heatsink because of that...

 

Edit: someone confirmed the X170 (maybe SM) not being able to work with standard mxm cards. Dunno if the KM has the same issue or not.

Edited August 22 by SuperMG

[Kronki705]

Did the X-VSION fully work in the P775TM1 (POST, display) ? Did you power it fully with the MXM slot? I've heard the 3080 plops right in with the right heatsink and a .inf mod, but a card from a whole other vendor and a completely different board layout working?? If this is one chinese madlad away from having a heatsink and working, you struck gold.

[SuperMG]

1 hour ago, Kronki705 said:

Did the X-VSION fully work in the P775TM1 (POST, display) ? Did you power it fully with the MXM slot? I've heard the 3080 plops right in with the right heatsink and a .inf mod, but a card from a whole other vendor and a completely different board layout working?? If this is one chinese madlad away from having a heatsink and working, you struck gold.

Yes

 

4090: 19.8-20k graphics score in TimeSpy. 

 

Shows BIOS page. 1x DP, HDMI, eDP work.

 

I'm waiting for the ultimate watercooling heatsink for 9900KS and RTX 40XX. The RTX 40XX with the current 3 heatpipes custom heatsink works so well. My CPU heatsink at the moment is crap and could handle max 155W before throttling. Might upgrade the CPU fan too.

 

I sell an RTX 4070 MXM too, works with P775TM.

[SuperMG]

News.

 

Same issue is happening on a working X170KM board!?

 

GPU die is cold. Laptop can boot without display. RAM and CPU OK.

 

This is definitely a power related (E1 to E4 pins) issue or something in the RSVD pins that's triggering the GPU to work.

 

I need to find the schematics for the X170 but where... I need to compare the P570WM3 to the X170 and the P775 to the X170 and see the real differences.

 

I don't know what Clevo did. I don't think it's a BIOS issue. Correct me if I'm wrong 

[AGI]

On 8/27/2026 at 6:06 AM, SuperMG said:

新闻。

 

同样的问题也发生在一个X170KM千米的主板上！？

 

GPU芯片是冷的。笔记本电脑可以在没有显示器的情况下启动。RAM和CPU正常。

 

这肯定是一个与电源相关的(E1到E4引脚)问题，或者是RSVD引脚中的某个东西触发了GPU工作。

 

我需要找到X170的原理图，但是在哪里...我需要将P570WM3与X170以及P775与X170进行比较，看看真正的区别。

 

我不知道克莱沃做了什么。我不认为这是BIOS的问题。如果我错了，请纠正我

Hi! I recently acquired an X170KM-G myself, and I'm also interested in installing a standard MXM GPU. Clevo's proprietary MXM cards are simply too expensive.

 

How has your research been progressing? Have you made any further progress?

 

Have you ever tried the standard industrial MXM RTX 3080 card from Aetina International? It has a separate power connector that needs to be adapted to a 9-pin connector. I think it could be a good candidate for testing whether the compatibility issue is related to the power supply.

 

However, we would first need to modify or make a custom power cable for it.

 

At this point, your forum thread seems to be the only detailed information I've been able to find worldwide about this particular compatibility issue with the X170KM-G.

 

I'd really appreciate it if you could share any further findings or progress. Thanks!

[SuperMG]

1 hour ago, AGI said:

Hi! I recently acquired an X170KM-G myself, and I'm also interested in installing a standard MXM GPU. Clevo's proprietary MXM cards are simply too expensive.

 

How has your research been progressing? Have you made any further progress?

 

Have you ever tried the standard industrial MXM RTX 3080 card from Aetina International? It has a separate power connector that needs to be adapted to a 9-pin connector. I think it could be a good candidate for testing whether the compatibility issue is related to the power supply.

 

However, we would first need to modify or make a custom power cable for it.

 

At this point, your forum thread seems to be the only detailed information I've been able to find worldwide about this particular compatibility issue with the X170KM-G.

 

I'd really appreciate it if you could share any further findings or progress. Thanks!

Hello, I just gave up.

 

It doesn't work because the MXM slot doesn't fully power the standard MXM cards. 

 

You either need to take the power from the external power connector and inject it into your MXM power pins slot. Be careful with the 5V, 12V and GND.

 

It's very risky and no one tried it because you could damage your GPU and motherboard. They cost a lot of money in parts...

 

The fact that the Clevo RTX Ampere work in P870TM, P775TM is wild. Because P870 and P775 work with standard cards.

 

No, it's not about a VBIOS problem. I tested a standard RTX 3080 MXM, same Ampere generation card and I get the same issues as on P3000, RTX 5000, RTX 4070, 4080 and 4090, no display.

 

I also suspect something else, maybe there's one pin in the RSVD section that checks if the card is a valid Clevo RTX Ampere or not. Maybe I'm wrong.