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Are there any special PCI E riser with 2 input sources and switch for them?
 

Are there any special PCI E riser with 2 input sources and switch for them?  

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iaomw
(@iaomw)
Active Member
Joined: 3 years ago
 

Hey guys, here is the idea. I want to put the Thuner2 PCB into my mini-ITX PC. So it don't need to modify the box, and also utilize the SFX PSU and GTX 1060 in my PC when the PC is turned off. Maybe that also need to do some mod on PSU.

If there exist such PCI-E riser with 2 input sources, one from PC motherboard and another from Thuner2 PCB. The output will go to my Graphics card. And there is a hardware switch I can switch between them. Then this idea could be fulfilled.

When my PC is turned off. I could simply plug my MacBook Pro to my PC and turn the switch to Thuner2.

You know AKiTiO Node and Mantiz Venus are even larger than a lot mini-ITX case. There are still many empty space even you are using a full sized card. It doesn't make sense and not decent. For their price, they don't even want to modify the PSU, just buy some cheep large SFX then put it it!!! Come on, you can put an entire PC into them!!!

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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igerard
(@igerard)
Estimable Member
Joined: 3 years ago
 

Ha interesting my idea was to setup an eGPU from scratch... PCIe board with two slot, one for a TB3 card and the other one for the GC, plus a good power unit and some cable to power all the components...

But it seems to me very difficult to find the PCIe 2 slots board, the TB3 card is expensive... then at the end I don't know ho to do that ? Maybe get a used PC and reuse a part of the mother board ... 

MBP 2018, Touch Bar, i7 2.6 GHz, 32 GB RAM, 1T SSD, Radeon 560X... very nice!
eGPU : Akitio Node + RX 580 + GTX 980 Ti + Vega64


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mcarver316
(@mcarver316)
Estimable Member
Joined: 3 years ago
 
Posted by: iaomw

 

Hey guys, here is the idea. I want to put the Thuner2 PCB into my mini-ITX PC. So it don't need to modify the box, and also utilize the SFX PSU and GTX 1060 in my PC when the PC is turned off. Maybe that also need to do some mod on PSU.

If there exist such PCI-E riser with 2 input sources, one from PC motherboard and another from Thuner2 PCB. The output will go to my Graphics card. And there is a hardware switch I can switch between them. Then this idea could be fulfilled.

When my PC is turned off. I could simply plug my MacBook Pro to my PC and turn the switch to Thuner2.

You know AKiTiO Node and Mantiz Venus are even larger than a lot mini-ITX case. There are still many empty space even you are using a full sized card. It doesn't make sense and not decent. For their price, they don't even want to modify the PSU, just buy some cheep large SFX then put it it!!! Come on, you can put an entire PC into them!!!

   

Yeah, someone needs to build a motherboard or mini-itx PC with eGPU capability. Or, a PCI card that enables such capability. You plug your Thunderbolt cable and voila, your laptop is now using your mini-PC's discrete graphics (the mini pc only large enough to fit a full size, double width, GPU card). Imagine skull canyon+Akitio in a case the size of an EXP GDC. Imagine stacking 2-4 or more of these bad boys for gpu compute heavy projects!

2015 17" MSI GT73VR-6RF 2xGTX1070 + [email protected] (AKiTiO Node driving Cubix Chassis) + Win10 > 365Gigahashes per second


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De5tr0yer
(@de5tr0yer)
New Member
Joined: 3 years ago
 

As my first post, I must commend this idea.

I joined just yesterday, main reason being I ordered TP Yoga 370, i.e. I have finally lived the day when the eGPU should be natively available for ultraportable Thinkpad users.

Currently, I have DAN A4-SFX case and have though about doing a custom PCB with relays, which would be switching all PCIe lanes for GPU from PC to eGPU mode, but not in a way where the hot-switching functionality would be available.

It is hard to implement clean relay switching to not make a problem for the PC. Moreover, the PCIe hotswap requires a massive amount of work on software side, both in drivers and probably in OS kernel (DSDT-override kind of problems).

The base idea was following:
I would use the notebook 80% of time and it suits all my usual needs, other 20% consist of 15% gaming and 5% heavy-duty jobs. So, 95% of time I need only my notebook with eGPU. If and when I need more power, I would disconnect the eGPU from the notebook and power up my Devil's Canyon small-but-powerful PC in a "normal" way. I would not need the notebook.

In either way, my external monitor will always be connected to the dGPU (eGPU) and nothing will be connected to the PC mainboard, so the usage of the Intel iGPU for showing picture is for me not relevant. I am currently using iGPU only for QuickSync anyways.

DAN case has more than enough place underneath the GPU to accomodate full blown PCB solution with switching.

The main problem with the idea is cost of a single and clean switching solution, due to PCB development and of course soldering of components.
Moresoever, the Thunderbolt DIY kits such as ones for PCIex/mSATA/m.2 are, AFAIK, non-existent. ( http://www.hwtools.net/eGPU.html)
Finished solution taken out of the AKiTiO enclosures have unsuitable dimensions to keep everything clean.

While at it, it would be nice to make a daisy-chain TB3 connector, a few shared (PC and eGPU) USB3.0 or even USB2.0 connectors and a Gbit LAN connector, such as some enclosures already have (XG2, Mantiz, etc.).

Let me know what You guys think about the idea.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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iaomw
(@iaomw)
Active Member
Joined: 3 years ago
 
Posted by: De5tr0yer

 

As my first post, I must commend this idea.

I joined just yesterday, main reason being I ordered TP Yoga 370, i.e. I have finally lived the day when the eGPU should be natively available for ultraportable Thinkpad users.

Currently, I have DAN A4-SFX case and have though about doing a custom PCB with relays, which would be switching all PCIe lanes for GPU from PC to eGPU mode, but not in a way where the hot-switching functionality would be available.

It is hard to implement clean relay switching to not make a problem for the PC. Moreover, the PCIe hotswap requires a massive amount of work on software side, both in drivers and probably in OS kernel (DSDT-override kind of problems).

The base idea was following:
I would use the notebook 80% of time and it suits all my usual needs, other 20% consist of 15% gaming and 5% heavy-duty jobs. So, 95% of time I need only my notebook with eGPU. If and when I need more power, I would disconnect the eGPU from the notebook and power up my Devil's Canyon small-but-powerful PC in a "normal" way. I would not need the notebook.

In either way, my external monitor will always be connected to the dGPU (eGPU) and nothing will be connected to the PC mainboard, so the usage of the Intel iGPU for showing picture is for me not relevant. I am currently using iGPU only for QuickSync anyways.

DAN case has more than enough place underneath the GPU to accomodate full blown PCB solution with switching.

The main problem with the idea is cost of a single and clean switching solution, due to PCB development and of course soldering of components.
Moresoever, the Thunderbolt DIY kits such as ones for PCIex/mSATA/m.2 are, AFAIK, non-existent. ( http://www.hwtools.net/eGPU.html)
Finished solution taken out of the AKiTiO enclosures have unsuitable dimensions to keep everything clean.

While at it, it would be nice to make a daisy-chain TB3 connector, a few shared (PC and eGPU) USB3.0 or even USB2.0 connectors and a Gbit LAN connector, such as some enclosures already have (XG2, Mantiz, etc.).

Let me know what You guys think about the idea.

   

Thanks, that's a great idea. My first idea is also hot switch. But feels like it's too difficult for me with zero background, as you might know MS did a lot work for that hot switch thing on Surface Book, but it's still not very good and reliable. So a hardware switch which works on PC turn off might be easier as first step, unfortunately there is no such product on market.

But that's not your case, you can move forward, nice to see somebody is actually working on that. Except Razer core, other cases are neither too weak nor too stupid cumbersome. Maybe u can get some idea how Razer extend USB port and ethernet after looking at their PCB.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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iaomw
(@iaomw)
Active Member
Joined: 3 years ago
 

http://www.orbitmicro.com/global/eeerxb16-p-766.html

Looks like there are some multi-input PCI E riser, but not what I am looking for. 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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vava726
(@vava726)
Estimable Member
Joined: 3 years ago
 
Posted by: iaomw

 

http://www.orbitmicro.com/global/eeerxb16-p-766.html

Looks like there are some multi-input PCI E riser, but not what I am looking for. 

   

Buying 2 of them yuo can create a multiplexer without any switch

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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crowsodown24
(@crowsodown24)
Active Member
Joined: 3 years ago
 

Any luck?

 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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