90 or 180 degrees riser?

[kitnoman]

So I have a lian li lancool 2 mesh and I want to set the gpu into up right position.  What is the best riser for this?

 

[Bombastinator]

Something longer than either of those two I think.  The difference seems to be one of them points sideways and the other doesn’t.  You’re going to have to wrap the cable across the back of the card, which argues for a 90°.  The problem is if it bends in the wrong direction you’re hosed.  There seems to be enough room for the 180° to be bent around, but it’s a pretty tight bend and I don’t know if a pciex16 can do it or not. Looking at it I think the 90° is pointing in the correct direction, but I don’t think either are long enough which makes it academic.

Edited May 9, 2022 by Bombastinator

[RONOTHAN##]

Ideally you'd want a PCIe riser that's 180 in the opposite direction (I.E. the cable will naturally rest on the backplate of the card when it's connected), though in my 10 minutes of google I haven't been able to find one. 

 

As said above, odds are neither of those cables will be long enough to reach that though. You'd be better off rotating the GPU 180 and having the IO coming out the top of the card since then you'd have a clean run for the riser and the 180 cable (option B). 

[tkitch]

how would the card in that position work?  No external plugs?

 

the problem will be getting the PCIE Cable to do a non-flat 90 degree turn.  They don't like that.

[Bombastinator]

-deleted- misunderstanding of statement error. 

[kitnoman]

7 hours ago, RONOTHAN## said:

Ideally you'd want a PCIe riser that's 180 in the opposite direction (I.E. the cable will naturally rest on the backplate of the card when it's connected), though in my 10 minutes of google I haven't been able to find one. 

 

As said above, odds are neither of those cables will be long enough to reach that though. You'd be better off rotating the GPU 180 and having the IO coming out the top of the card since then you'd have a clean run for the riser and the 180 cable (option B). 

 

8 hours ago, Bombastinator said:

Something longer than either of those two I think.  The difference seems to be one of them points sideways and the other doesn’t.  You’re going to have to wrap the cable across the back of the card, which argues for a 90°.  The problem is if it bends in the wrong direction you’re hosed.  There seems to be enough room for the 180° to be bent around, but it’s a pretty tight bend and I don’t know if a pciex16 can do it or not. Looking at it I think the 90° is pointing in the correct direction, but I don’t think either are long enough which makes it academic.

 

I can't find anything locally for me to see and the only thing that available are online, so I can only guesstimate. I found around 5 available length 20cm, 30cm,40cm, 60cm,80cm. I also found a 100cm, but for some reason it's too expensive, so no go with that. In you guys opinion, with the three bends that I would be needing, does it need 2 or 3 40cm/60cm pcie so that the other end would correctly align towards the mother board?

 

 

 

6 hours ago, tkitch said:

how would the card in that position work?  No external plugs?

 

the problem will be getting the PCIE Cable to do a non-flat 90 degree turn.  They don't like that.

Do you mean the displayport? my table has a hole that's positioned directly below the front of my case, so I would be drilling a hole at the bottom of the case, right side of hdd drive and add some grommets(to look presentable). I found several types of pcie cable, some can be flatly bent. I'm just trying to imagine if it would align correctly after those bends.

[tkitch]

2 hours ago, kitnoman said:

Do you mean the displayport? my table has a hole that's positioned directly below the front of my case, so I would be drilling a hole at the bottom of the case, right side of hdd drive and add some grommets(to look presentable). I found several types of pcie cable, some can be flatly bent. I'm just trying to imagine if it would align correctly after those bends.

 

Not really, and def not:

 

1)  Are you going to drill 1.5"-2" holes through the PC case so you can get a DP Cable out of the tower?  Your entire GPU is in the middle of the case, so you can't get a cable to it from outside.

 

2)  Take a CVS Reciept and try to run it in the case to where you want it to go, it's NOT a simple little run, because PCIE Cables don't like a lot of folding.

[thrasher_565]

11 hours ago, RONOTHAN## said:

Ideally you'd want a PCIe riser that's 180 in the opposite direction (I.E. the cable will naturally rest on the backplate of the card when it's connected), though in my 10 minutes of google I haven't been able to find one. 

 

As said above, odds are neither of those cables will be long enough to reach that though. You'd be better off rotating the GPU 180 and having the IO coming out the top of the card since then you'd have a clean run for the riser and the 180 cable (option B). 

my guess cables will be at the bottom hidden...

[thrasher_565]

3 hours ago, kitnoman said:

 

 

I can't find anything locally for me to see and the only thing that available are online, so I can only guesstimate. I found around 5 available length 20cm, 30cm,40cm, 60cm,80cm. I also found a 100cm, but for some reason it's too expensive, so no go with that. In you guys opinion, with the three bends that I would be needing, does it need 2 or 3 40cm/60cm pcie so that the other end would correctly align towards the mother board?

 

 

 

Do you mean the displayport? my table has a hole that's positioned directly below the front of my case, so I would be drilling a hole at the bottom of the case, right side of hdd drive and add some grommets(to look presentable). I found several types of pcie cable, some can be flatly bent. I'm just trying to imagine if it would align correctly after those bends.

there are server 90 and 180 but i dont no how well they work. i have one and have not tested it yet. if your gpu is gen 4 then i don think there will be a server 90 for that yet.

 

[Bombastinator]

3 hours ago, tkitch said:

 

Not really, and def not:

 

1)  Are you going to drill 1.5"-2" holes through the PC case so you can get a DP Cable out of the tower?  Your entire GPU is in the middle of the case, so you can't get a cable to it from outside.

 

2)  Take a CVS Reciept and try to run it in the case to where you want it to go, it's NOT a simple little run, because PCIE Cables don't like a lot of folding.

I like the idea of using a long receipt as a test standin.  If one of those isn’t available I would choose recycled construction paper as it tears easily.  If you tear or crease it you’ve failed.  The problem with those cables is they don’t behave like IDE ribbon cables. They’re multiple times as thick, for one, and they don’t want to be creased at all, if you crease one it will stop working.  Big gentle low stress arcs is the only hope. 

[Ravendarat]

Id suggest trying to find a riser cable that's not solid but instead cut into ribbons as it will bend easier such as the ones you have pictured. Also depending on your GPU you might need to make sure its gen4, whatever cable you find that works for you is almost definitely gonna be on the more expensive side of riser cables available. Doing mods is cheap, doing mods CORRECTLY often isnt

[PriitM]

16 hours ago, Ravendarat said:

Id suggest trying to find a riser cable that's not solid but instead cut into ribbons as it will bend easier such as the ones you have pictured. Also depending on your GPU you might need to make sure its gen4, whatever cable you find that works for you is almost definitely gonna be on the more expensive side of riser cables available. Doing mods is cheap, doing mods CORRECTLY often isnt

Yep, been thinking of modding a PCI-e connector from ribbon to round cables. 4x cables with 20 conductors should cover the whole 82 pins. Or even if that is needed, could be done by 2x20 conductors. Then again, I know nothing about such high speed/high fidelity cable design...and could mess up everything real bad.