Problem about the new graphics card's power needing to match the motherboard specs and fitting into the case.
Problem about the new graphics card's power needing to match the motherboard specs and fitting into the case.
My situation involves a Lian Li O11D Mini with only SFX power supplies. The motherboard here is an MSI Z590 Unify (full ATX). The power supply uses a Corsair SF750 Platinum. The graphics card is a Sapphire RX7800XT with 2x8 pin power.
The problem is that the motherboard has a 6 pin connector for PCI supplemental power at the bottom. Using this cable removes the correct length needed for the other connector (each PCI cable has two 6x2 connectors) to reach the graphics card. Even with another cable, I had to rearrange things to get it connected properly. Right now, I’m using one cable plus a daisy chained plug, which isn’t the best setup.
I haven’t found any instructions in the manual or online about whether this supplemental cable needs to be connected to the motherboard. I’m unsure if the PCI slot supports 75W and don’t know if the other power cable affects that.
I’d prefer not to buy a full extension kit just to fix this issue, especially since searching for 8 pin extensions only gives me questionable KnM cables. Could it be possible to buy just a 2x8 pin PCI power extension cable at a lower price?
Reference: Antec has a complete kit for $20
The highest power usage from the connectors is noted by GIGABYTE Global. This information helps ensure a smooth experience with GIGABYTE products and services. Visit www.gigabyte.com for more details.
I went ahead and contacted MSI support. The connector at the bottom of the board is there for "having multiple high power GPU".
Never mind that there is only one slot on this board...They did not add that it actually increased the power on the slot, so really not even sure why it is there if that is the only use case. This board does have quite a few M.2 slots down there, so who knows.
They did tell me that the motherboard can be powered without it, so if I can get it to reach I may try to reroute it.
Corsair has a kit available, but it is darned high for what it is. I was considering trying to find something along the lines of "Cable Mod" or other reputable company making the universal side for the connector hardware side. The issue being that I cannot seem to find the 2x8 cable outside of the whole kit that I don't really want. Price wise I might just go that route.
they could be anticipating a dual-chip GPU... this has happened before.
it seems designed for crossfire, ensuring each GPU receives the expected power and preventing any single one from dominating.
still, that’s not useful on your board... what were they trying to achieve that day?
wouldn’t it work with a 6+2 cable (since both cables have two connectors), or would that still not connect to the GPU?
The problem with the stock cabling involves length and the placement of the power supply inside the case. It’s positioned in the upper back area when viewed from the front. To reach a cable, I had to insert it into the lowest right spot on the PSU and extend it along the card’s end. It was nearly successful. Even without the other cable, or using a different location, the cable was either too short or an unused connector was left hanging while handling another connector for extra length.
I plan to contact Corsair to check if they can provide a suitable solution directly. I’m not concerned about the PSU cabling and prefer avoiding a full extension kit in the back panel.
Thanks for your advice.
PSU in 2nd chamber? i hadn't looked at that case before.
what layout you using as "end of card" confuses me as I can see PSU goes behind MB tray.
Lian Li O11 Dynamic Mini chassis review (Page 10)
This time, we’re checking out the Lian Li O11D Mini, a smaller version of the well-known O11D series. We reviewed the regular version over 2.5 years ago, and it earned our “Recommended” award. This time, it’s a smaller case, but still a very spacious one. It looks like an ITX/mATX chassis, but...
www.guru3d.com
I stop helping if you waiting on Corsair
The link illustrates the position of the PSU in the upper back area, positioned behind the motherboard tray. The power connectors are located on the outer edge, extending all the way to the end away from the outputs. The modular cable connectors are slightly too short for me to reach the GPU, due to the wire routing and the size of the ATX board.
Corsair offers a kit with individually wrapped 8-pin connectors that don’t require daisy chaining. These are just over 2 feet long, which should allow sufficient reach. They serve as replacements for the standard type 4 cables. Priced at $30 for a pair, they aren’t the most economical option, but they are official and come with a warranty from Corsair.
It makes sense because it's built for smaller scenarios, and then complaints arise about cables being too long. Only actual extra cables are relevant. The issue really comes down to whether those cables should be included free or require ordering. I think it depends on the typical case sizes in that format—patterns seem aimed at smaller ones, so longer cables just need more space. Charging bigger boards more likely reduces costs compared to extra cables most users won't need.