Developer79

Hi everyone, Unfortunately, the mod requested by DJDan is very complex. It also requires a good understanding of the P870xx series architecture. Nevertheless, Rainer is right, and I agree with him. Everyone wants extensions and modifications without realizing how much time, work, and money it all costs! My GFX extension for the two MXM ports (MXM board) automatically supports x16 lanes. That would be the easiest way to implement 16-lane support on the P870xx. But then you can also install the latest graphics cards—provided they fit geometrically—from practically all current manufacturers like Nvidia, AMD, and Intel. I think that’s quite something. I’m currently developing the internal flex PCBs for the display and external display. I’d like to extend my thanks once again to Darius. He was the only one who provided me with the RTX 5070 Ti for the project! Thanks also to everyone in the forum for all the support for my projects! And Rainer has also played a huge role in my projects and their practical implementation. That was very important for the further insights and next versions of my boards!!! Greetz Developer79

I'm still working on developing the cables! I'll be able to tell you more in two weeks.

The CPU uses lanes—16 directly in the case of the 9900KS variant! Newer models use more. Additionally, the chipset generates even more lanes. This depends on the DMI speed. As mentioned, newer chipsets offer more lanes. The P870xx uses the same number of lanes for almost all model variants. In my opinion, the P870xx has enough lanes 🙂

Hi, I think only later Intel chipsets, starting around the 700–900 series, support more than 16 lanes!!! The older Z370 and earlier models only support 16 lanes. A manufacturer like Clevo could have included automatic detection, but they didn’t. In any case, my board supports the full 16 lanes...which is probably what most people here want 🙂

In the picture, you can see how the two ports are configured. These ports transmit the DisplayPort signal from the desktop graphics cards to the internal display and an external DisplayPort! Unfortunately, this was the only signal configuration possible because the MXM board could only handle that much! With the cables connecting the desktop graphics card to my board, full integration of the desktop graphics card into the P870xx series is possible!!!

For example, I use an Nvidia A400 at work. You could install that as well. Or Intel Arc cards. Depending on the available power, you can install many different cards. So all the major manufacturers—Nvidia, AMD, or Intel... The power target shouldn't be too high. Over 500W. But I think it’s clear to everyone that 500W is excessive for a laptop! 300–400W is more than enough to outperform today’s latest gaming laptops 🙂

That's right—that's how it's all set up. This allows you to use the laptop's existing cables, so you don't have to worry about that.... It might be hard to see from above, but there are two rows. That means, depending on the GPU's performance level, you can connect two cables and utilize the full GPU power of the P870xx—up to 450W!

No, these are just the latest parts and versions! I'm still working on the cables, etc.

My latest boards for second CPU control for all P870xx models!

My newest sets: MXM- and Powerboard

Since I do everything myself and currently have less time, everything is taking a little longer. I would like to have the cables ready by the end of the month. Everything else is still in progress. As I said, I'm not a big company with a huge budget. I develop as I have money and time.

Yes, I developed everything with my CAD programs! It's not all finished yet, but yes, that's how I develop!

I would say I'm taking it step by step! Right now, I'm developing the cables with Flex-PCB!

Take a look at the pictures to see what the RTX5070Ti desktop looks like in the P870xx. Then you'll know that my solution of using two different graphics cards, MXM and a normal desktop card, won't work!!!! It's either one or the other!!!

However, the standard MXM specification is acceptable, but the Clevo format is not compatible. Only other manufacturers are compatible, but the question then arises as to how compatible the pins are with the motherboard.

No GTX1080 from Clevo will fit in there. That said, I would recommend the RTX3070 or something similar! Unfortunately, there is so little space that only other manufacturers are using new graphics chips! I don't have any good ideas yet...

I'll let you know when I'm ready! :-) Well, you can't do much with that...

I can only agree with some of the previous speakers. Unfortunately, genuine DTRs are completely extinct these days. This has mainly to do with Nvidia's contracts. I know from reliable sources that they want to control everything and only tolerate soldered variants, especially for laptops. The only exception Nvidia makes is for industrial devices and military technology. Clevo was really the last major milestone in terms of BIOS and MXM standards. I had the ideas for my P870xx projects years ago because Clevo was still doing real high-end development with the greatest possible flexibility. I would like to thank the people in the forum for their support. I hope my desktop extension will be fully operational soon.

Hi, this is what the RTX5070Ti looks like in the P870xx! I've now measured all the lengths and will be able to make the cables soon... I'll do the routing soon, I mean! best regards

Hi, I took apart the RTX5070Ti to measure the DisplayPort cables. On the PCB, you can clearly see how the DisplayPort channels are routed, and the manufacturers pay close attention to the routing of the channels! The chip also looks like new! Thanks again to Darius!

I'm also testing G-Sync for desktop cards. I took this possibility into account when developing my MXM board. I'll get back to you on this topic.

Hello Darius, Thank you very much again for your help with the graphics card. It has now arrived and looks like new!!! Now I can build it in peace and implement this card in the P870xx. 1. I'll measure the PCB for the DisplayPort channels and route the cables. 2. Design the brackets for the card. 3. Develop cooling—water or vapor chamber. Let's see what ideas I come up with. Best regards, Ralf

Hi, Many thanks to Darius. I'll pick up the card on Monday and continue building and developing. The first small subproject is the internal and external cable so that an internal display and an external display can be connected. I've already developed the schematic and, with Darius's help, I can now determine the exact length of the FlexPCB and start routing once I know the exact geometric ratios. The cables should work for all future generations. The second project will be the cooling system. In the short term, it will be water cooling, but there is also the option of making a vapor chamber like the original. However, I don't know the exact costs for that yet. That's all from me for now. Thanks for your support.

You can only try it out and use trial and error! To be honest, I don't really understand the need for Gsync. It's supposed to be a synchronization technology, but I think that if the graphics card, display, and CPU are good, this technology isn't really necessary. Sure, you can talk about personal preferences, but I think that's all it is!

Hi maro, just use the latest WQHL driver. That should do the trick!