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posted by martyb on Sunday October 10 2021, @01:22PM   Printer-friendly

High Power PCIe Gen5 power connector for next-gen GPUs pictured, up to 600W

Earlier this week [we published] an article about the upcoming flagship GeForce RTX 3090 Ti graphics card, which is now set to launch in January. The graphics card is supposedly the first card to feature a PCIe Gen5 power connector, a new standard that will ultimately solve one of the biggest drawbacks of the current 8-pin power connector, an insufficient power it can provide (up to 150W).

Igor Wallossek from Igor'sLAB managed to obtain the schematics and the information on the new connector, confirming that there is indeed a new standard coming, possibly to all new graphics cards in 2022.

Just as we said, the power connector has 16 lanes in total (12 power and 4 signal lanes), but it's not a MicroFit Molex standard, but something entirely new. The standard [as defined] has smaller spacing than existing connectors, a change from 4.2 mm to 3.0 mm. The connector has a width of 18.85 mm, so it is not exactly small, but much smaller than dual or triple 8-pin connector configuration. This will greatly simplify the circuit and PCB design process, not to mention all the space that will be saved.

The PCI-SIG specs define that each pin can sustain up to 9.2A, which means a total of 55.2 A at 12V. This gives a maximum power of 662W, but the specs officially go up to 600W, Igor notes. Along with twelve pins for power, there are [an] additional 4 signal lanes right underneath the connector. At this moment it is unclear what [their purpose is] or whether they are required or optional.

Also at Wccftech.


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  • (Score: 2) by takyon on Sunday October 10 2021, @08:54PM

    by takyon (881) <reversethis-{gro ... s} {ta} {noykat}> on Sunday October 10 2021, @08:54PM (#1185975) Journal

    Tier speculation table for RDNA 3 and RDNA 4. [wccftech.com]

    To address your comment:

    1. 4K or 8K, multi-monitor or ultra-wide possible. Anything above that probably only makes sense for VR.
    2. The argument for 1000 Hz has been made. [blurbusters.com]
    3. The industry will switch from pursuing rasterization gains to accelerating real-time raytracing and other things.
    4. The budget gamer who sticks to 1080p while the bleeding edge is attempting 8K or whatever is the real winner. APUs are improving to the point where the Steam Deck is targeting 720p30 on a handheld with Van Gogh, while laptops and desktops should be able to do 1080p reasonably well with Rembrandt. That's just next year.
    5. The 600 Watt power connector is not necessarily intended to result in consumer GPUs using 600 Watts. It looks like a one-size-fits-all solution for power delivery, and is more compact than a dual cable.

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