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Corsair Now Offers 12VHPWR Connector Modular Cable Capable of Delivering Up to 600W
The cable is compatible with PCI Express 5.0 which conforms to the ATX 3.0 standard, also used for the power supply of the latest high-end graphics cards. When connected to a CORSAIR power supply unit of 1200W or more, the full power of 600W can be supplied.
CORSAIR introduced a power modular cable "600W PCIe 5.0 12VHPWR Type-4 PSU Power Cable" with a 12VHPWR connector compatible with the current full modular power supply unit on September 22, 2022 (local time).
The 12VHPWR connection cable is compatible with PCI Express 5.0 and corresponds to the ATX 3.0 standard, and it is also used to power the latest GPU "GeForce RTX 4090." The graphics card has an adapter that transforms the PCI Express 8pin to 12VHPWR connector, but if you use the cable introduced this time, you can connect to the current high-end graphics card without using an adapter. The new power modular cable is backwards compatible with all current CORSAIR Type-4 full modular power supply devices. A single cable may offer up to 600W of power, and when linked to a 1200W or higher CORSAIR power supply unit, full power of 600W can be given. Furthermore, power supply units of 1000W or more can be supplied with up to 450W, while models of 750W or more can be supplied with up to 300W.
Global shipments will begin on September 29th.
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Dragam1337
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#6055023 Posted on: 09/27/2022 12:55 PM
Yes, it does seem like a rather stupid decision.
600w going through a single cable!...
Yes, it does seem like a rather stupid decision.
Kaarme
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Posts: 3363
Joined: 2013-03-10
#6055039 Posted on: 09/27/2022 01:33 PM
Doesn't make a lot of sense to me.
Corsair are saying that their cable can handle 263W per 8pin cable (75W from PCIE slot) and that's assuming the load is spread evenly between the 2 cables and I don't see any mechanism to do that.
Cables can't have any mechanisms to control anything. It's all up to the GPU. If the GPU tries to draw too much, the PSU's overcurrent protection (OCP) will cut the power off (or if it's a Gigabyte PSU, it will explode, which also cuts the power, just with more violence). Graphics cards with external power connectors have existed for a long time, so the card manufacturers would know how to balance the power draw per cable. However, neither the GPU nor the PSU would know if the cable is or an adapter is insufficient. That can lead to those parts melting or catching fire. Then it's just poor engineering, which is hardly uncommon, unfortunately. We have all heard about graphics cards' power spikes (well above what the card's wattage is supposed to be) tripping the PSU OCP, for example. At least power spikes don't melt cables.
Doesn't make a lot of sense to me.
Corsair are saying that their cable can handle 263W per 8pin cable (75W from PCIE slot) and that's assuming the load is spread evenly between the 2 cables and I don't see any mechanism to do that.
Cables can't have any mechanisms to control anything. It's all up to the GPU. If the GPU tries to draw too much, the PSU's overcurrent protection (OCP) will cut the power off (or if it's a Gigabyte PSU, it will explode, which also cuts the power, just with more violence). Graphics cards with external power connectors have existed for a long time, so the card manufacturers would know how to balance the power draw per cable. However, neither the GPU nor the PSU would know if the cable is or an adapter is insufficient. That can lead to those parts melting or catching fire. Then it's just poor engineering, which is hardly uncommon, unfortunately. We have all heard about graphics cards' power spikes (well above what the card's wattage is supposed to be) tripping the PSU OCP, for example. At least power spikes don't melt cables.
southamptonfc
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Posts: 2547
Joined: 2006-04-10
#6055041 Posted on: 09/27/2022 01:33 PM
Electrically, that is no different to an adapter which connects to 2x8pin pcie cables.
The pcie 8 pin cables are wired directly to the corresponding 12 pin cables, so i'm guessing it will be administrated by the power controller on the gpu.
Electrically, that is no different to an adapter which connects to 2x8pin pcie cables.
Solfaur
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#6055049 Posted on: 09/27/2022 01:50 PM
IMO it's best to just wait out for proper ATX 3.0 PSUs to show up, than to mess with cables and adapters. As far as I understand the first ones will be out by the end of the year, just in time for RDNA3 cards to be out, along with sufficient testing of the 4090s. The last thing I would want after spending a fortune is to have constant fear of potential fire hazard.
IMO it's best to just wait out for proper ATX 3.0 PSUs to show up, than to mess with cables and adapters. As far as I understand the first ones will be out by the end of the year, just in time for RDNA3 cards to be out, along with sufficient testing of the 4090s. The last thing I would want after spending a fortune is to have constant fear of potential fire hazard.
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Doesn't make a lot of sense to me.
Corsair are saying that their cable can handle 263W per 8pin cable (75W from PCIE slot) and that's assuming the load is spread evenly between the 2 cables and I don't see any mechanism to do that.
The pcie 8 pin cables are wired directly to the corresponding 12 pin cables, so i'm guessing it will be administrated by the power controller on the gpu.