![]() 24 Overclocker Buildzoid of Actually Hardware Overclocking, posts a video criticizing the new 12VHPWR connector noting that the new connector drastically reduces the number of pins and wires carrying power. ![]() Bitziopoulos concludes the 12VHPWR connector doesn’t seem to be an issue in his testing. ![]() It should be noted that the test used a native 12VHPWR cable on an ATX 3.0 power supply rather than Nvidia’s adapter. He is unable to damage the cable while seeing only a small thermal variance. 24 A few hours after the initial melting report on Reddit, renowned power supply reviewer and the principle behind PSU certification company Cybenetics, Aristeidis Bitziopoulos, attempts to replicate the melting 12VHPWR connector by subjecting it to 600 watt loads for more than 90 minutes. The Reddit post immediately goes viral on the high-profile graphics card with many assuming the new connector to be at fault. A second report of a melted dongle is received as well on that day with damage to the adapter cable and an Asus RTX 4090 TUF Gaming OC Edition occurring. ![]() Both Nvidia and Gigabyte reach out to the owner who reports a replacement card has been received. The GPU appears to be a Gigabyte 4090 Gaming OC using an Nvidia-branded 12VHPWR adapter cable. 24 The first report of a melted 12HPWR connector is posted on the Nvidia sub-reddit. VideoCardz later amends its report to say that while 30 cycles appears very low, many Molex connectors introduced over the last 20 years have had similar mating cycles. 22 VideoCardz’s editor Wh圜ry reports that GPU maker Zotac’s guidance on the new 12VHPWR connector is rated for 30-insertion cycles which raises alarms as to the lifespan and durability of the new connector. In general, however, ATX 3.0 power supplies PCWorld have seen indicate the cables to be identical on both ends. It’s worth pointing out that the internal report seems to refer to the connection on the PSU side-not the GPU side. 14 The full email and additional details from the PCI-SIG are reported by Stephen Burke of Gamers Nexus and notes that “failures have been observed in certain cable routing conditions from PSUs and test boards that generate side load on the interface.” Burke said the report-apparently created by Nvidia-from PCI-SIG showed three different manufacturers have been tested with 10 sample assemblies with failures manifesting from 10 hours to 30 hours with melting. 10 Hassan Mujtaba of WCCFTech reports of an alert issued from PCI-SIG to members of a “thermal variance, which could result in safety issues under certain safety conditions.” The member alert advises vendors to “work closely with their connector vendors and exercise due diligence in using high-power connections” ![]() We’ll update this story as new information is released. There’s also the possibility that not fully inserting the cable may cause increased resistance and enough heat to melt the connectors. Nvidia officials have declined to comment while it investigates, but the latest development seem to point to bad 12VHPWR adapter cables. With this fast-moving, confusing, and also very serious situation, PCWorld has decided to round up the facts you need to know to help separate fact from fiction. $1599.99 at Best Buy | Not Available at Amazon ![]()
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