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NVIDIA GeForce RTX 4080 rumored specs: same 16GB GDDR6X, now at 21Gbps

The latest rumored specs on NVIDIA's new GeForce RTX 4080: the same 16GB of GDDR6X memory, but at 21Gbps (previous rumors: 18Gbps)

@anthony256
Published Jul 4, 2022 3:21 AM CDT   |   Updated Wed, Jul 27 2022 2:35 AM CDT

The rumored specifications on NVIDIA's next-gen GeForce RTX 40 series graphics cards are running hot today, with the latest leaks pulling up the GDDR6X memory bandwidth on the GeForce RTX 4080.

NVIDIA's new GeForce RTX 4080 rumored specs haven't changed much, with leaker "kopite7kimi" teasing the AD103-300-A1 GPU and 420W of TDP -- unchanged rumored specs here -- but the 16GB of GDDR6X is reportedly being cranked up to 21Gbps, up from previous rumors pegging it at 18Gbps.

The current-gen Ampere-based GeForce RTX 3080 in its original 10GB GDDR6X (not in the second "LHR" Lite Hash Rate version) form saw the 10GB of GDDR6X memory clocked at 19Gbps. NVIDIA's new GeForce RTX 4080 graphics card with 16GB of GDDR6X memory at 21Gbps is a better rumor to hear, up from the 18Gbps GDDR6X (lower clocks than the RTX 3080).

NVIDIA is reportedly dropping the GeForce RTX 4080 and its 16GB of GDDR6X memory at 21Gbps on a lower 256-bit memory bus (the RTX 3080 10GB has a 320-bit memory bus) which drops the RTX 4080 down to 672GB/sec of memory bandwidth, down from the 760GB/sec memory bandwidth on the RTX 3080 10GB.

GeForce RTX 4080 (new rumored specs)

  • GPU: AD103-300-A1
  • GPU clocks: Unknown
  • CUDA cores: 10240
  • SMs: 80
  • VRAM: 16GB GDDR6 @ 21Gbps (previous rumor @ 18Gbps)
  • Memory bus: 256-bit
  • TDP: 420W or so
NVIDIA GeForce RTX 4080 rumored specs: same 16GB GDDR6X, now at 21Gbps 506 | TweakTown.com

GeForce RTX 4090 (very latest rumored specs)

  • GPU: AD102-300
  • GPU clocks: base 2235, boost 2520, actual max 2750+
  • CUDA cores: 16384 (up from 16128)
  • SMs: 128 (up from 126)
  • VRAM: 24GB GDDR6X @ 21Gbps
  • Memory bus: 384-bit
  • TDP: 450W or so

GeForce RTX 4080 (new rumored specs)

  • GPU: AD103-300-A1
  • GPU clocks: Unknown
  • CUDA cores: 10240
  • SMs: 80
  • VRAM: 16GB GDDR6 @ 21Gbps (previous rumor @ 18Gbps)
  • Memory bus: 256-bit
  • TDP: 420W or so

GeForce RTX 4070 (new rumored specs)

  • GPU: AD102-275 (used to be AD104-400)
  • CUDA cores: 7168
  • SMs: 56
  • VRAM: 12GB GDDR6 (up from 10GB GDDR6) @ 18Gbps
  • Memory bus: 192-bit (up from 160-bit)
  • TDP: 300W or so
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NEWS SOURCE:twitter.com

Anthony joined the TweakTown team in 2010 and has since reviewed 100s of graphics cards. Anthony is a long time PC enthusiast with a passion of hate for games built around consoles. FPS gaming since the pre-Quake days, where you were insulted if you used a mouse to aim, he has been addicted to gaming and hardware ever since. Working in IT retail for 10 years gave him great experience with custom-built PCs. His addiction to GPU tech is unwavering.

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