Hello, recently I just bought 5080 gpu. However, the provided 12vhpwr adapter cable looks ugly & horrible after setup on my desktop PC. I saw taobao selling such direct 16pin to dual 8 pin power cable (up to 600w) and I bought it. May I know what are the differences between these two cable (Direct connect vs expansion cable?) in term of stability, reliability etc...

This post has been edited by kc9988: May 8 2025, 05:35 PM


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Unless you're trying to start a fire in your PC, I wouldn't recommend it.

Each 8-pin PCIe cable delivers up to 150W.
Using 3 x 8-pin cables gives you up to 450W of power.
Switching to just 2 x 8-pin limits you to 300W — less than the estimated 350W draw of the RTX 5080.

Cutting corners with power delivery is never a good idea.

Want a cleaner-looking build? Do it right: get an ATX 3.0 PSU with a native 16-pin 12VHPWR cable. It's safer, more efficient, and looks a whole lot better.

With all the issue on 12VHPWR cables/connector you still dare to use TB capalang cable kah? Is your RM 5000+ GPU worth it? If your PSU is modular type why not get the PSU OEM direct cable kit.

Use the stock one. Don't bother about others, they are potential fire hazard.
P/S: Single 8 pin only deliver up to 150W. 5080 is configured to use 360W on stock (and higher on OC variants), so having 2x 8 pin + 75W PCI-E x16 is insufficient, that's why the stock comes with 3x 8 pins to support up to 450W from the cable alone. If the connector is designed with standard specification in mind, the card will detect the available power via the 4 pins on top and proceed to stop booting due to not meeting the 450W requirement. Well since it is from taobao, who knows the manufacturer decided to trick the GPU that it has 4x 8 pins, then the GPU will boot happily, overcurrent happens and start melting your connector / cables.

This post has been edited by kingkingyyk: May 8 2025, 08:06 PM

I would recommend using the included adapter. Warranty does not cover third party connectors.

PSA on the above TB cable: It is sus on so many levels
1. That its setup to draw max 600W from just 2 PCIE connection will overload it kawkaw, as each PCIE has safe limit of 150W hence why for 5090 that draws 600W does need 4x PCIE (150W x 4). By draw the max load this cable is overload the connector by 2X factor drawing 300W each. That is way over the design limit of this connector.

2. By right having only 2 PCIE connection meant the 12VHWPR would be limited to 300W as not all the sense pins are plugged but how does it draw 600W? Look closely the 2nd pic, the sense pin wires are looped to bypass the safety limits of 12VHPWR connector. When anything bypass safety features, YOU ARE AT RISK HERE!

3. Also look closely 2nd pic, you can see not all the 8pin connection is wired, it is actually wired for 6pin PCIE connections. This should only draw 75W per socket meaning for this cable the safe limit is actually 150W but its now forced to draw 600W or 4X the load! Holy crap!

If your OEM squid connector isnt melting your 12VHPWR socket, this capalang cable surely will. Throw this into thrashbin right now. Its a fire hazard.

...especially with an expensive GPU like this

kc9988 Unless you hate money and want to start a fire, please do not subject your expensive card with cables like this

This post has been edited by chocobo7779: May 10 2025, 10:20 PM