Powering a PCI-e riser with a 12v power brick
- Thread starter cleveland
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Should work fine, just get a brick capable of providing 75W at the very least (which translates to 6.25A - I'd add at least 30W/2.5A on top of that for safety) and either find one with a 6-pin Mini-fit connector or mod/adapt one to the required connector. This would ideally be a relatively high quality brick, as there'd be minimal filtering of the power going into the GPU from it, and noisy power could lead to instability or even hardware damage (not all power bricks conform to ATX power specs, after all).
That riser is pretty much only suitable for mining, though. It's a PCIe x1 riser, so it would bottleneck even a low-end GPU when gaming. There are x4 or x8 options that would be far better.
That riser is pretty much only suitable for mining, though. It's a PCIe x1 riser, so it would bottleneck even a low-end GPU when gaming. There are x4 or x8 options that would be far better.
I'm assuming you want to route it out of a relatively small opening - please correct me if I'm wrong here
Here's an x4 riser, available in various lengths. It doesn't have a power input, though, but I think it has the mounting holes for a 4-pin power plug - you could likely solder it yourself, or look around for a version with it already attached. x4 is likely the best compromise between a compact/easily routed cable and performance - an x8 cable would be twice the width.
Perhaps my riser is one of the few options that provide the thinnest data cable with x4 lines connected:
https://smallformfactor.net/forum/threads/project-cpr-customizable-pci-e-riser-up-to-x16.6120/
Whoa. That looks amazing. Really love the mid-cable disconnect option too. How on earth did you get the cable that thin? And are these available for purchase?Perhaps my riser is one of the few options that provide the thinnest data cable with x4 lines connected:
https://smallformfactor.net/forum/threads/project-cpr-customizable-pci-e-riser-up-to-x16.6120/
Ordered from the Chinese) They make a lot of interesting pieces!
I just had the last sample with a cable length of 100 cm
I guess @Valantar asked about the availability of your riser. But, if I'm wrong on my guessing, I'll be the one asking here: are your riser available for purchase?
I'm assuming you want to route it out of a relatively small opening - please correct me if I'm wrong here
I'm interested in building the most simple eGPU possible. The riser you linked is good, but not enough for my needs, since there's no power correction on board and the cable looks really frail.
Yes. Details I think can be discussed in personal correspondence.I guess @Valantar asked about the availability of your riser. But, if I'm wrong on my guessing, I'll be the one asking here: are your riser available for purchase?
I doubt that the cable is actually that thin - photos I've seen of other variants from the same brand look far thicker. I suspect it's just the render making it look less durable than reality. Given that cheaper risers than this use relatively thick ribbon cables, I don't see any reason to suspect this to be less durable than those, at least. As for the power issue, as I said there are powered versions out there, I just couldn't find one in the minute I spent looking this up
Still @kotproger 's version does look far superior (but probably more expensive too!).
That looks sweet! Not cheap, though. Also illustrates how ADT-link's flex cables definitely aren't as thin and flimsy as renders might make them lookYou might be interested in this solution.
Can be powered by both ATX and DC (Dell 8pin 220w DC Brick.) power supplies.
Final cabling might look like this
BTW, does Dell actually sell a 12V 220w brick? Do you have a part number?
Sweet Jesus! That's EXACTLY what i was looking for!You might be interested in this solution.
Can be powered by both ATX and DC (Dell 8pin 220w DC Brick.) power supplies.
Final cabling might look like this
Thanks a lot, @dfrgu! The only one complaining about your finding is my bank account! LOL
Yes they do.That looks sweet! Not cheap, though. Also illustrates how ADT-link's flex cables definitely aren't as thin and flimsy as renders might make them look
BTW, does Dell actually sell a 12V 220w brick? Do you have a part number?
P/N N112H, available from lots of merchants. It's made for their USFF OptiPlex Desktops.
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