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GeForce RTX 4090 vs GeForce RTX 4080

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Key Differences

  • No game was measured on every one of these cards on one shared test system, so there is no speed comparison to make.
  • RTX 4090 has the most memory: 24 GB against 16 GB.
  • RTX 4090 has the most memory bandwidth: 1,010 GB/s against 716.8 GB/s.
  • RTX 4080 draws the least power: 320 W against 450 W.
Spec GeForce RTX 4090 GeForce RTX 4080
Overview
Product name NVIDIA GeForce RTX 4090 NVIDIA GeForce RTX 4080
Architecture Ada Lovelace Ada Lovelace
Generation / family GeForce RTX 40 Series GeForce RTX 40 Series
GPU codename AD102 AD103
Launch date 2022-10-12 2022-11-16
Market segment Desktop, Flagship in GeForce RTX 40 Series Desktop, High End in GeForce RTX 40 Series
Board type / entry type Reference GPU Reference GPU
GPU
Process node TSMC 5 nm TSMC 5 nm
Die size 609 mm² 379 mm²
Transistor count 76.3 billion 45.9 billion
GPU chip AD102 AD103
SM / multiprocessor count 128 76
CUDA Cores 16384 9728
Tensor Cores 512 304
RT Cores 128 76
ROPs 176 112
TMUs 512 304
Clocks
Base / Core clock 2,235 MHz 2,205 MHz
Boost clock 2,520 MHz 2,505 MHz
Memory clock 1,313 MHz 1,400 MHz
Memory
Memory size 24 GB 16 GB
Memory type GDDR6X GDDR6X
Memory bus width 384-bit 256-bit
Memory bandwidth 1,010 GB/s 716.8 GB/s
Bus / Interface
Bus interface PCIe 4.0 x16 PCIe 4.0 x16
AGP / PCI / PCIe distinction PCIe PCIe
Power
TDP / TBP / board power 450 W 320 W
Recommended PSU 850 W 750 W
Power connectors 1x PCIe Gen 5 16-pin 1x PCIe Gen 5 16-pin
Slot width Triple-slot, 304 mm length, 61 mm width Triple-slot, 310 mm length, 61 mm width
Display / Media
Display outputs 1x HDMI 2.1, 3x DisplayPort 1.4a 1x HDMI 2.1, 3x DisplayPort 1.4a
Features
DirectX support DirectX 12.2 DirectX 12.2
OpenGL support OpenGL 4.6 OpenGL 4.6
Vulkan support Vulkan 1.4 Vulkan 1.4
CUDA support 8.9 8.9
Shader Model 6.8 6.8
Ray tracing support Hardware RT units present Hardware RT units present
Performance / Benchmarks
FP32 throughput 82.58 TFLOPS 48.74 TFLOPS
FP16 throughput 82.58 TFLOPS 48.74 TFLOPS
Muted cells indicate unavailable, not applicable, or not directly comparable specifications.

Frame rates compare runs of the same game at the same quality preset on one test system. DLAA counts as native resolution, because it applies anti-aliasing at full render resolution rather than upscaling; DLSS and FSR upscaling are never counted as native. Where a capture named ray tracing without a readable on or off value, it is read as on.

Measured game results

Gaming benchmarks

Reviewed FPS from games these cards were measured on under one shared test system and resolution. Every game is compared against itself, so each result is a like-for-like pair. These results are separate from theoretical compute specifications.

No shared approved gaming benchmark yet

The selected GPUs do not currently share reviewed measurements from the same game, test system and resolution. No result was estimated or filled in.