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GeForce RTX 4090 vs GeForce RTX 4080

Select up to four GPU Wiki entries to compare matching specifications row by row. The comparison uses the site database and keeps generation-specific specs visibly separate.

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Key Differences

  • GeForce RTX 4090 has more CUDA Cores (16384 vs 9728).
  • GeForce RTX 4090 has more Memory size (24 GB vs 16 GB).
  • GeForce RTX 4090 has more Memory bandwidth (1,010 GB/s vs 716.8 GB/s).
  • Boost clock: GeForce RTX 4090 has 2,520 MHz; GeForce RTX 4080 has 2,505 MHz.
  • TDP / TBP / board power: GeForce RTX 4090 has 450 W; GeForce RTX 4080 has 320 W.
  • GeForce RTX 4090 has more RT Cores (128 vs 76).
Row order:
Muted cells indicate unavailable, not applicable, or not directly comparable specifications.
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 2022-09-20 2022-09-20
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 700 W
Power connectors 1x 16-pin 1x 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

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