Rumor mill: According to business sources, Nvidia has shared its reference boards for the flagship RTX 4000-series GPUs, which could be referred to as the RTX 4080, 4080 Ti, 4090, or 4090 Ti, with its OEM companions. It hasn’t delivered the GPUs themselves but, however the boards are geared to devour 600W of energy.
Several leakers with good observe information have not too long ago stated that they expect the RTX 4080 or 4090 to have a 600W TBP (complete board energy). A better-end mannequin, both the RTX 4090 Ti or some particular version card, may devour over 800W. But they’ve additionally hooked up a number of disclaimers to these numbers, noting that it is too early for actual particulars to have been finalized.
Igor’s Lab stories that Nvidia has informed OEMs to check the reference boards used to assist them design their PCBs and coolers on the full 600W. Not each 4080 or 4090 will essentially devour 600W out of the field, however at the very least some will turbo or overclock into that energy bracket.
Igor’s Lab acquired an image of a reference board from a Chinese OEM and confirmed its authenticity with two different sources (above). One standout characteristic was the twelve slots for reminiscence modules, which point out that the GPU can have both 12 GB or 24 GB of GDDR6X reminiscence, probably the latter.
It additionally had a powerful 24 voltage converters, up from 20 on the Founder’s Edition RTX 3090 PCB (shared between the GPU and reminiscence). It used UPI Semi’s UP9512 controllers able to eight phases, so three controllers per part.
All these converters and modules are fed by one 12VHPWR connector, also referred to as the PCIe 5.0 energy plug, which may ship 600W alone. Igor’s Lab notes that OEMs are designing PCBs that use the complete 600W, however, as talked about, that is a ceiling, not a mean. Each 12VHPWR connector will include an adaptor with 4 6+2 pin Molex plugs, despite the fact that most energy provides do not include that many cables.
The insiders count on Nvidia to reuse the 3090’s three-slot air cooler for the 4080 and 4090. Meanwhile, producers are reportedly making ready 3.5-slot air coolers and contemplating water-cooled options just like what AMD used for the RX 6900 XT LC.
In a possible first, the 3090 Ti and 4080 are allegedly pin-compatible, which means they will use the identical PCB designs. Igor’s Lab speculates that OEMs could be utilizing the 3090 Ti to check their 4080 coolers and PCBs. So the 3090 Ti and the 4080 would possibly share elements.
At the very least, the 3090 Ti is the trial run for the 12VHPWR connector. Rumors point out that the 3090 Ti will devour 400-500W relying on the mannequin, a spread that appears loopy in comparison with the RTX 3000-series however tame in comparison with the rumored figures for the RTX 4080 and 4090.
Image Credit: Thomas Foster