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NVIDIA GeForce RTX 3080 Ti: Details about 20 GB VRAM cards revealed by BIOS leak

The GeForce RTX 3080 Ti with 20 GB of VRAM is very different from the 12 GB card of the same name. (Image source: NVIDIA)
The GeForce RTX 3080 Ti with 20 GB of VRAM is very different from the 12 GB card of the same name. (Image source: NVIDIA)
NVIDIA may have released the RTX 3080 Ti as a 12 GB card, but it and AIBs were developing 20 GB cards. A leaked BIOS has confirmed a few aspects about the unreleased variant, including its ludicrous 450 W power limit.

The GeForce RTX 3080 Ti is one of NVIDIA's stranger Ampere graphics cards. Launched in June for US$1,199, the GeForce RTX 3080 Ti offers 12 GB of GDDR6X VRAM with a GA102 GPU. Essentially, the GeForce RTX 2080 Ti successor is a scaled-back GeForce RTX 3090 with half the VRAM. However, NVIDIA developed a 20 GB version at some stage, hands-on photos of which leaked last month.

Now, more of these rogue cards have started appearing in the wild. For example, someone has shared the BIOS for a Gigabyte model on TechPowerUP GPU-Z, a screenshot of which we have embedded below. The publication reveals the card as the Gigabyte RTX 3080 Ti AORUS Xtreme 20G (GV-N308TAORUS X-20GD), matching last month's leak.

The GeForce RTX 3080 Ti 20 GB carries the Device ID '10DE 2205', which PCI ID databases have referred to as the GeForce RTX 3080 and RTX 3080 Ti interchangeably. Incidentally, GPU-Z states that the card has a 1,335 MHz GPU clock that it can boost to 1,665 MHz and 20 GB of GDDR6X VRAM pegged at 1,188 MHz. The card has a 450 W power limit too, which is higher than Gigabyte's RTX 3090 GAMING OC. 

While GPU-Z does not report this, the GeForce RTX 3080 Ti 20 GB must have a 320-bit memory bus, rather than the 384-bit bus that retail cards have. Accordingly, the GeForce RTX 3080 Ti 20 GB is a derivative of the GeForce RTX 3080, not the GeForce RTX 3090. Ultimately, it seems likely that these 20 GB cards are the GeForce RTX 3080 configurations that NVIDIA cancelled last year.

Unsurprisingly, NVIDIA has not published any display drivers for these RTX 3080 Ti 20 GB cards. A Russian YouTuber (КОЛЯ МАЙНЕР) has demonstrated that his GAMING OC model can mine Ethereum though, and without a Lite Hash Rate (LHR) getting in its way.

(Image source: TechPowerUP)
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Alex Alderson
Alex Alderson - Senior Tech Writer - 5721 articles published on Notebookcheck since 2018
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.
contact me via: @aldersonaj
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 09 > NVIDIA GeForce RTX 3080 Ti: Details about 20 GB VRAM cards revealed by BIOS leak
Alex Alderson, 2021-09-10 (Update: 2021-09-10)