I've been wondering about the safety of using 8-pin to 12VHPWR adapters. A few years back, power adapters had a bad reputation, especially with older cables like 2x Molex to 6-pin or 8-pin not being recommended. The 12VHPWR cable has a notorious history of melting, even with direct connections from the power supply unit (PSU). Since I have a non-modular PSU with 2x 6+2 pin outputs, I'm curious if these adapters are safe or if I should just invest in a new PSU. My current GPU doesn't use the new connector, but I'd like to feel secure in case I decide to upgrade to a 9070 XT or 5070 in the future.
5 Answers
Using an adapter can be as safe as a native 12VHPWR connection. The adapters bundled with GPUs have thicker cables and better manufacturing quality compared to many other adapters out there. When folks warn against them, it often relates to poorly made adapters that could pose a risk.
Most 9070 XTs stick to the older 8-pin connector, so you shouldn't worry too much. But just a heads up, the 12VHPWR connector has a higher failure rate than older ones. It's a bit exaggerated, and many people are fine long-term, but NVIDIA has made some questionable changes that might increase risk for higher wattage. Still, the 9070 XT is significantly faster than the 5070, so consider that when making your choice!
The adapters that come with the GPU are generally safe for that connector. Melting issues mainly affect the highest-end models like the RTX 5090 and 5080. For most setups, you should be just fine with the right adapter.
I’ve seen a lot of RX 9070 XT Sapphire cards having issues with the 12VHPWR melting, even though it's a 300W card. Just be cautious with that advice.
It’s a mixed bag. These adapters can be just as safe as a native cable, but the danger primarily lies within the 12V connector itself. The older PEG connections handle more current and are typically less prone to failure unless the connectors are damaged.
Honestly, they're about as safe as inviting a fire hazard into your home. Just be wary!
Yeah, my budget will likely only stretch to the 5060. Prices of cards in my country are a bit crazy, and I knew not all 9070 XTs have the 12VHPWR, just trying to gauge my options!