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ZOTAC Mentions that ATX 12VHPWR Adapter can Connect-Disconnect 30x only
Hah, that's an interesting find alright; few power supplies have native 12+4 pin ATX 12VHPWR connectors; early adopters of the GeForce RTX 4090 graphics card will require an adapter cable to convert the 8-pin PCIe power connectors into a single 12VHPWR connector.
Some premium overclocked RTX 4090 cards, such as the ZOTAC RTX 4090 AMP Extreme, including adapters that convert up to four 8-pin PCIe to a 12VHPWR, allowing the card to deliver up to 600 W of power. According to the ZOTAC AMP Extreme product page, you can read this:
4x 8-pin-to-12VHPWR cable (Limited service life with up to 30 connect / disconnects)
Perhaps this is a limitation set by NVIDIA for the maximum number of connection cycles the adapter can handle before compromising its safety as that connector is rather thin in plastic. The adapter in the image bears an NVIDIA logo, indicating that it is supplied directly by NVIDIA to AIC partners for custom-designed cards (and not counting on them to develop their own adapters). The 12VHPWR connector appears small, but it is capable of delivering 600 W continuously and 200% excursions, totaling 1200 W.
BenchAndGames
Senior Member
Posts: 251
Joined: 2011-07-27
Senior Member
Posts: 251
Joined: 2011-07-27
#6053504 Posted on: 09/22/2022 08:10 PM
It is definitely something very serious and would have to be considered. I personally will be far from these adapters in case I buy a GPU with the new 16 pin connector, I would better buy a new ATX 3.0 power supply
It is definitely something very serious and would have to be considered. I personally will be far from these adapters in case I buy a GPU with the new 16 pin connector, I would better buy a new ATX 3.0 power supply
Odarnok
Member
Posts: 79
Joined: 2016-08-04
Member
Posts: 79
Joined: 2016-08-04
#6053509 Posted on: 09/22/2022 08:24 PM
These adapters are intrinsically illegal.
If you use one of them and you have a house fire... all insurance companies will laugh before your face
These adapters are intrinsically illegal.
If you use one of them and you have a house fire... all insurance companies will laugh before your face
Astyanax
Senior Member
Posts: 15740
Joined: 2018-03-21
Senior Member
Posts: 15740
Joined: 2018-03-21
#6053515 Posted on: 09/22/2022 08:33 PM
its not like the 8 pin microfits have much better.
"without context that's not necessarily a useful piece of information. Mini-fit plus connectors (similar to PCIe power) only are rated to 75 cycles on an entry-level connector."
its not like the 8 pin microfits have much better.
"without context that's not necessarily a useful piece of information. Mini-fit plus connectors (similar to PCIe power) only are rated to 75 cycles on an entry-level connector."
Reddoguk
Senior Member
Posts: 2578
Joined: 2010-05-26
Senior Member
Posts: 2578
Joined: 2010-05-26
#6053586 Posted on: 09/23/2022 12:12 AM
If the pin layout is on top of the gfx card like most are then there's no way you could bend that 4-1 cable tight enough to hide the 4 x 8 pins around the back of the case.
This is why i would need a new PSU cause i really don't like the look of that 4-1 cable.
30 cycles should be plenty, in 18 months i've only pulled the gfx card out once and that was a few weeks ago to check if it needed cleaning but only the back plate was dusty.
There's no way you could bend that cable near the 1 plug so that means you'd have to bend near the middle and the 4x8 will be seen inside the case.
If the pin layout is on top of the gfx card like most are then there's no way you could bend that 4-1 cable tight enough to hide the 4 x 8 pins around the back of the case.
This is why i would need a new PSU cause i really don't like the look of that 4-1 cable.
30 cycles should be plenty, in 18 months i've only pulled the gfx card out once and that was a few weeks ago to check if it needed cleaning but only the back plate was dusty.
There's no way you could bend that cable near the 1 plug so that means you'd have to bend near the middle and the 4x8 will be seen inside the case.
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Yeah Steve mentioned Nvidia did extensive testing of 8 pin to 12 pin adaptors an major fail points was 40 connect/disconnects and excessive bending of the cables, caused the cable to catch fire an burn peaking at 200c + on thermal camera at the failed point.