GeForce RTX 4090 vs Radeon RX 7800 XT
Performance-wise the GeForce RTX 4090 is out front, dramatically faster, roughly 95% up on the Radeon RX 7800 XT.
Maximum Capacity Reached. Remove a model to add another. (2/2)
Comparable or lower specs
GeForce RTX 4090 vs Radeon RX 7800 XT: In-Depth Breakdown
Performance: GeForce RTX 4090 vs Radeon RX 7800 XT
The GeForce RTX 4090 is dramatically faster, around 95% ahead of the Radeon RX 7800 XT. That gap is enough to move it up a tier: the GeForce RTX 4090 is comfortable at 4K and high-refresh 1440p, while the Radeon RX 7800 XT is better matched to 1440p.
Power & Efficiency
The Radeon RX 7800 XT is the lighter draw at 263W against the GeForce RTX 4090's 450W, making it the easier card to power and cool. The GeForce RTX 4090 draws more in absolute terms but squeezes out more performance per watt, so budget for a beefier PSU if you go that route.
VRAM & Future-Proofing
The GeForce RTX 4090's 24GB (vs 16GB on the Radeon RX 7800 XT) gives it more room for 4K textures and memory-hungry creative or AI workloads.
Features & Ecosystem
Beyond raw numbers, the GeForce RTX 4090 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 7800 XT offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: GeForce RTX 4090 or Radeon RX 7800 XT?
The GeForce RTX 4090 is the faster card by about 95%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.
Frequently Asked Questions
Is the GeForce RTX 4090 better than the Radeon RX 7800 XT?
Which is better for 4K gaming, the GeForce RTX 4090 or the Radeon RX 7800 XT?
Does the GeForce RTX 4090 have enough VRAM advantage to matter?
Which should you buy: GeForce RTX 4090 or Radeon RX 7800 XT?
Technical Specifications Comparison
Architecture & Cores
| Specification | GeForce RTX 4090 | Radeon RX 7800 XT |
|---|---|---|
| Architecture | Ada Lovelace | RDNA 3 |
| Process Node | TSMC 4N | TSMC N5 |
| CUDA Cores (CUDA Cores / Stream Processors) | 16,384✓ | 3,840 |
| Ray Tracing Cores | 128✓ | 60 |
| Tensor / AI Cores | 512✓ | 120 |
Clock Speeds
| Specification | GeForce RTX 4090 | Radeon RX 7800 XT |
|---|---|---|
| Base Clock | 2,235 MHz✓ | 1,800 MHz |
| Boost Clock | 2,520 MHz✓ | 2,430 MHz |
Memory
| Specification | GeForce RTX 4090 | Radeon RX 7800 XT |
|---|---|---|
| VRAM Capacity | 24 GB✓ | 16 GB |
| Memory Type | GDDR6X | GDDR6 |
| Memory Bus | 384-bit✓ | 256-bit |
| Memory Speed | 21 Gbps✓ | 19.5 Gbps |
| Bandwidth | 1,008 GB/s✓ | 624 GB/s |
Connectivity & Power
| Specification | GeForce RTX 4090 | Radeon RX 7800 XT |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| TDP | 450 W | 263 W✓ |
| Power Connectors | 1x 16-pin | 2x 8-pin |
| Released | Sep 2022 | Aug 2023 |
Related Reading
GDDR5 vs GDDR6 vs GDDR6X vs GDDR7: Which VRAM Generation Actually Matters for Your GPU?
Not all VRAM is created equal. GDDR5, GDDR6, GDDR6X, GDDR7 — we break down what each generation actually delivers in bandwidth, power, and real-world impact so you can stop guessing and start buying smarter.
The Unrivaled Apex: NVIDIA GeForce RTX 5090 Deep Dive
The RTX 5090 redefines what is possible in consumer graphics. We explore why the Blackwell flagship remains in a league of its own.
Used RTX 4080 vs New RTX 5070 Ti: Which 16GB Card Should You Buy?
Two 16GB cards, two very different propositions: raw Ada rasterization with used-market risk, or a newer feature set and a warranty. Here's the decision, spec by spec.