NVIDIA GeForce RTX 4090
Expert rating9 / 10
- GPU Brand:
- NVIDIA
- Architecture:
- Ada Lovelace (AD102)
- Tier:
- Flagship
- CUDA Cores:
- 16384
- VRAM:
- 24 GB
- Memory Type:
- GDDR6X
- Ray Tracing Support:
- Yes
- TDP:
- 450 W
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Manufacturer: NVIDIA Last updated: September 11, 2026
NVIDIA GeForce RTX 4090 (Ada Lovelace/AD102/16384 CUDA Cores/24GB GDDR6X/450W TDP/Flagship) Review
The RTX 4090 was the undisputed flagship of the Ada Lovelace generation, and remains one of the most requested cards in price-comparison searches even after the RTX 50-series launched, thanks to a still-massive secondary and clearance market.
16,384 CUDA cores on the full AD102 die give the RTX 4090 a commanding lead over every other Ada card, and it still trades blows with several RTX 50-series cards in non-ray-traced workloads.
The Full AD102 Die
16,384 CUDA cores on the full AD102 die give the RTX 4090 a commanding lead over every other Ada card, and it still trades blows with several RTX 50-series cards in non-ray-traced workloads.
A Creator and AI Workhorse
Beyond gaming, the RTX 4090's 24GB of GDDR6X VRAM and CUDA core count made it the go-to consumer card for local AI model training, Stable Diffusion, and heavy video rendering work throughout its generation.
Comparison to Alternatives
Against the RTX 5080, the RTX 4090 often matches or beats it in raw rasterization thanks to its larger 24GB frame buffer, even though the 50-series card has newer architecture advantages. Against the AMD Radeon RX 7900 XTX, the 4090 leads clearly across the board, though at nearly double the price.
Specifications
Platform
| GPU Brand | NVIDIA |
|---|
Performance
| VRAM | 24 GB |
|---|---|
| Memory Type | GDDR6X |
| Boost Clock | 2520 MHz |
| Ray Tracing Support | Yes |
Physical & Power
| TDP | 450 W |
|---|
Silicon
| Architecture | Ada Lovelace (AD102) |
|---|---|
| Shader Units | 16384 |
Memory
| Memory Bus Width | 384 bit |
|---|
Market and workstation
| MSRP | 1599 USD |
|---|
| Brand | NVIDIA |
|---|---|
| Model | GeForce RTX 4090 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating9 / 10
The Ada generation's flagship, still competitive with current-gen cards thanks to a 24GB frame buffer and the full AD102 die.
Best for
- Buyers who want the largest VRAM buffer and top-tier rasterization performance available in the Ada generation.
Not for
- Anyone without a high-wattage PSU and case airflow to match a 450W card.
FAQs
What are the key specifications of the NVIDIA GeForce RTX 4090 (Ada Lovelace/AD102/16384 CUDA Cores/24GB GDDR6X/450W TDP/Flagship)?
The NVIDIA GeForce RTX 4090 (Ada Lovelace/AD102/16384 CUDA Cores/24GB GDDR6X/450W TDP/Flagship) is a graphics card from NVIDIA. Key specs: GPU Brand NVIDIA, Architecture Ada Lovelace (AD102), CUDA Cores 16384, Boost Clock 2520, VRAM 24 GB.
Who is the NVIDIA GeForce RTX 4090 (Ada Lovelace/AD102/16384 CUDA Cores/24GB GDDR6X/450W TDP/Flagship) best suited to?
It suits buyers who want the largest vram buffer and top-tier rasterization performance available in the ada generation..
What are the drawbacks of the NVIDIA GeForce RTX 4090 (Ada Lovelace/AD102/16384 CUDA Cores/24GB GDDR6X/450W TDP/Flagship)?
It is a poor fit for anyone without a high-wattage psu and case airflow to match a 450w card..
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