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GeForce RTX 4080 vs GeForce RTX 4090

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 4080 has 2,505 MHz; GeForce RTX 4090 has 2,520 MHz.
  • TDP / TBP / board power: GeForce RTX 4080 has 320 W; GeForce RTX 4090 has 450 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 4080 GeForce RTX 4090
Overview
Product name NVIDIA GeForce RTX 4080 NVIDIA GeForce RTX 4090
Architecture Ada Lovelace Ada Lovelace
Generation / family GeForce RTX 40 Series GeForce RTX 40 Series
GPU codename AD103 AD102
Launch date 2022-09-20 2022-09-20
Market segment Desktop, High End in GeForce RTX 40 Series Desktop, Flagship in GeForce RTX 40 Series
Board type / entry type Reference GPU Reference GPU
GPU
Process node TSMC 5 nm TSMC 5 nm
Die size 379 mm² 609 mm²
Transistor count 45.9 billion 76.3 billion
GPU chip AD103 AD102
SM / multiprocessor count 76 128
CUDA Cores 9728 16384
Tensor Cores 304 512
RT Cores 76 128
ROPs 112 176
TMUs 304 512
Clocks
Base / Core clock 2,205 MHz 2,235 MHz
Boost clock 2,505 MHz 2,520 MHz
Memory clock 1,400 MHz 1,313 MHz
Memory
Memory size 16 GB 24 GB
Memory type GDDR6X GDDR6X
Memory bus width 256-bit 384-bit
Memory bandwidth 716.8 GB/s 1,010 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 320 W 450 W
Recommended PSU 700 W 850 W
Power connectors 1x 16-pin 1x 16-pin
Slot width Triple-slot, 310 mm length, 61 mm width Triple-slot, 304 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 48.74 TFLOPS 82.58 TFLOPS
FP16 throughput 48.74 TFLOPS 82.58 TFLOPS

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