NVIDIA has apparently used the new 12V-2x6 power connectors on its GeForce RTX 4070 FE GPUs instead of the 12VHPWR design.
NVIDIA Sneakily Used 12V-2x6 Connectors Instead of 12VHPWR On GeForce RTX 4070 Founder Edition GPUs
A few days ago, it was reported that PCI-SIG had a new CEM 5.1 specification designed around the existing 12VHPWR connector. This new connector standard was termed as the 12V-2x6 design and was said to feature various little changes and conformality with the ATX 3.1 standard to avoid all of the issues encountered on the initial 12VHPWR designs
Taking a closer look at the GeForce RTX 4070 FE from NVIDIA, Igor's Lab has now discovered that the card may already be using the newer 12V-2x6 pin power connector and the difference is visible from the four sense pins at the bottom of the primary 12-pin port. The difference is that while the older CEM 5.0 specification had a 0.45mm offset for the four sense pins, the new CEM 5.1 spec has modified that to a 1.7mm inward offset.
The same is the case with the MSI GeForce RTX 4070 Gaming X Trio custom variant which features a shortened 1.7mm offset but the connector itself has the 12VHPWR H+ label. There are supposed to be two connectors, the H+ and H++ so the proper design still hasn't been made available but it is stated that ASTRON would be mass-producing it but it is very interesting that a non-finalized design is already making its way to consumer GPUs.
12VHPWR vs 12V-2x6 Power Connectors For GPUs (Image Credits: Igor's Lab)
It may be possible that this new revision can reduce a lot of melting issues associated with the older connectors. The new 12V-2x6 power connector will be featuring design spec for 150-300W cards too so future RTX 4050 & RTX 4060 series cards can also make use of that instead of the 8-pin plugs that are currently in use.
The NVIDIA GeForce RTX 4070 was also the first card that saw both 12VHPWR and standard 8-pin connector configurations with most AIBs opting to use the standard power plugs. PSU vendors have told us that they already have 12V-2x6 designs in the works & MSI is one of them who is already offering them as part of its updated GL series lineup. The new ATX 3.1 specifications are expected to be further detailed by Intel in the coming months.