Thunderbolt 3 external drive slot + M.2/NGFF adapter?
 
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Thunderbolt 3 external drive slot + M.2/NGFF adapter?  

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Paul Chen
(@paul_chen)
Eminent Member
Joined: 4 years ago
 

Very elegant @joevt

For the power supply, i'll be following the guide from here once i get all my components.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@paul_chen Where does the ground go from AC input or will you use a C8 two prong instead of C6 or C14 three prongs? Since you only need 12V, you don't need the Plug-in DC Board, right? 3.3V will come from the Thunderbolt port. My M.2 adapter gets 3.3V from 5V. I'll try a different adapter when I get different parts.

In my previous pictures, you see that the x16 PCIe slot is hanging off the graphics card x16 connector instead of supporting the graphics card. You can add standoffs and mount the right angle x16 PCIe slot like a motherboard. I think 11 mm is the minimum length for the standoff (depends on the thickness of the motherboard assuming PCIe slot heights are standard because the standoffs are being used to accomodate the under-hang of the PCIe card bracket). The right angle adapter only has 3 holes so I drilled a fourth for stability. The fourth hole is under the x16 PCIe slot retaining apparatus which makes inserting a screw difficult, so you can either cut off that part of the PCIe x16 slot, or use a male/female standoff and use a nut to attach it (use a screw for female/female standoffs). The following pictures show the 4 standoffs - M3 male/female 9 mm with M3 2.4 mm wide nuts. The picture showing the front is using a single slot card (in this context, front is the side with the DisplayPort ports, bottom is the PCIe slot).

Standoffs side
Standoffs

The picture showing the side of an old GPU illustrates how much space is under the GPU behind the x16 slot. If you want to place a power supply there, then longer standoffs will be required. For a power supply like the Mean Well, It might be the best location to minimize volume increase of the entire enclosure because you'll need only a few extra millimeters. Next best place might be behind the entire GPU. Third best is above the GPU (but awkward). And last would be beside the GPU.

 

Mac mini (2018), Mac Pro (Early 2008), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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Paul Chen
(@paul_chen)
Eminent Member
Joined: 4 years ago
 

@joevt, you just connect a ring terminal to ground, not connected to anything afaik. If you look at Jhack pure's kit, that's what it looks like http://j-hackcompany.com/?product=160w-internal-power-supply-for-pure-chassis#configuration

 

Also remember that the mean well power supplies will require some air flow. Eg. EPP-200-12 is rated for 140W without air flow and 200W with 10CFM, luckily the PSU comes with fan connectors so you can add one if you need it.

This post was modified 2 years ago

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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ukalele94
(@ukalele94)
New Member
Joined: 2 years ago
 

@joevt

Can you verify that you do not need the 5v for the r43sl. I have an atx power supply that I can take from another project and add wire to the 12v and ground if it will work without the 5v

Dell latitude 7390 2 in 1, xfx radeon rx 580


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nando4
(@nando4)
Noble Member Admin
Joined: 5 years ago
 

@ukalele94, the R43SL takes 12V input to drive the PCIe slot from the 4-pin floppy header. 5V (red) is never used.

https://pinouts.ru/Slots/pci_express_pinout.shtml

Do note that you'll need up to 75W to drive the slot so ensure you use both GND pins on the floppy header.

Yes, have tested it.  Was driving a ADT-Link R43SL with a Dell DA-2 using a custom cable with 12V-GND-GND inputs.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M.2 (ADT-Link R43SG) + Win10 1803 // compares M.2 vs TB3 performance inc unoptimized H-CPU BIOS [build link]  


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ukalele94
(@ukalele94)
New Member
Joined: 2 years ago
 

@nando4

Thank you, that is good to know! not I just need to either solder wires directly or buy a connector. I will be 3d printing a case that I can connect a power supply to the outside with cables split to power the GPU and the 12v for the PCB itself. hoping it will turn out well, we shall see

Dell latitude 7390 2 in 1, xfx radeon rx 580


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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@paul_chen For a 2" wide power supply, you could put a couple 50mm fans at the end of the enclosure. 60mm if the power supply is enclosed (enclosed Mean Well power supplies are 10 or 11 mm wider).

If you get a larger 3" wide power supply, then a single 80mm fan would fit at the end of the enclosure. At this width, there might be no benefit to placing the power supply under the GPU because the height of the power supply plus the width of the GPU could be less than the width of the power supply. In that case, you might as well choose a Flex ATX power supply since the side of the GPU allows for deeper and wider power supplies.

In either of those two cases, an additional fan could be placed on the side of the GPU if the power supply is not as long as the GPU.

Two other orientations exist where the height of the power supply is matched with the width of the GPU so that the width of the enclosure is unchanged but the enclosure is lengthened or made taller by the width of the power supply - the latter orientation being similar to the Sonnet Echo Express III-D except narrower.

@ukalele94 Check out the posts at akitio-thunder-2-barrel-plug-bypass for discussion of appropriate DC power connectors.

 

Mac mini (2018), Mac Pro (Early 2008), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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wimpzilla
(@wimpzilla)
Honorable Member
Joined: 5 years ago
 

@joevt

Really cool setup i love it, congrats.

 

2012 13-inch Dell Latitude E6320 + R9 270X@4Gbps-mPCIe (EXP GDC 8.4) + Win10
E=Mc²

 
2012 15" Lenovo ThinkPad T530 [2nd,4C,Q] + R9 270X @ 4Gbps-mPCIe2 (EXP GDC 8.4) + Win10 [build link]  


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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

I got some 90° USB-C adapters (discussed in the 90 Degree Angle USB-C adapter thread) from Amazon to try a different arrangement. With one adapter, the Thunderbolt connection can be perpendicular to the graphics card. With three (shown in the picture), the Thunderbolt connection can be in the same direction as the GPU DisplayPort connections and can be positioned behind the GPU back plate (other side from the GPU fans) so the width of the GPU is no longer a factor (as it was in my previous arrangement where the enclosure was on the side of the GPU fans).

Sadly, there isn't enough room between my enclosure's Thunderbolt port and the GPU PCIe bracket even when I use the white M.2 to PCIe x4 adapter which has the PCIe slot further away from the M.2 slot (and therefore closer to my enclosurer's Thunderbolt port). The picture below shows the difference between the previous M.2 to PCIe x4 adapter I linked and the white adapter. the product page for the white adapter shows an open ended PCIe x4 slot but the one I received was not open ended (does not accomodate an x16 PCIe card) so I used the smallest Dremel engraving cutter (left most bit in the picture) to make it open ended (start from the bottom of the slot, poke a hole, then move up to the top of the slot, 10000 rpm if you're patient, 15000 rpm if you're careful - it could drift).

M.2 Fit Fail
M.2 Compare
Dremel

Mac mini (2018), Mac Pro (Early 2008), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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Paul Chen
(@paul_chen)
Eminent Member
Joined: 4 years ago
 

@joevt, wow, nice and compact... 

 

I was just planning to get something like this

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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