GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
Market Value Leader
Only verified data for Radeon RX 6600 is available. Benchmarks for other models are currently being processed.
The GeForce RTX 4090 is dramatically faster than the Radeon RX 6600, leading by roughly 380% in our performance index.
Maximum Capacity Reached. Remove a model to add another. (2/2)
Comparable or lower specs
GeForce RTX 4090 vs Radeon RX 6600: In-Depth Breakdown
Performance: GeForce RTX 4090 vs Radeon RX 6600
The GeForce RTX 4090 is dramatically faster, around 380% ahead of the Radeon RX 6600. 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 6600 is better matched to 1080p.
Power & Efficiency
The Radeon RX 6600 pulls less power (132W vs 450W), so it's the easier card to cool and the lighter load on your PSU. The faster GeForce RTX 4090 draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it. Its more modern Ada Lovelace architecture on a TSMC 4N process is part of why it does more with each watt.
VRAM & Future-Proofing
With 24GB against 8GB, the GeForce RTX 4090 has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6600's 8GB can fall short.
Features & Ecosystem
Beyond raw numbers, the GeForce RTX 4090 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 6600 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 6600?
The GeForce RTX 4090 is the faster card by about 380%. 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 6600?
Which is better for 4K gaming, the GeForce RTX 4090 or the Radeon RX 6600?
Does the GeForce RTX 4090 have enough VRAM advantage to matter?
Technical Specifications Comparison
Architecture & Cores
| Specification | GeForce RTX 4090 | Radeon RX 6600 |
|---|---|---|
| Architecture | Ada Lovelace | RDNA 2 |
| Process Node | TSMC 4N | TSMC N7 |
| CUDA Cores (CUDA Cores / Stream Processors) | 16,384✓ | 1,792 |
| Ray Tracing Cores | 128✓ | 28 |
| Tensor / AI Cores | 512 | — |
Clock Speeds
| Specification | GeForce RTX 4090 | Radeon RX 6600 |
|---|---|---|
| Base Clock | 2,235 MHz✓ | 1,626 MHz |
| Boost Clock | 2,520 MHz✓ | 2,491 MHz |
Memory
| Specification | GeForce RTX 4090 | Radeon RX 6600 |
|---|---|---|
| VRAM Capacity | 24 GB✓ | 8 GB |
| Memory Type | GDDR6X | GDDR6 |
| Memory Bus | 384-bit✓ | 128-bit |
| Memory Speed | 21 Gbps✓ | 14 Gbps |
| Bandwidth | 1,008 GB/s✓ | 224 GB/s |
Connectivity & Power
| Specification | GeForce RTX 4090 | Radeon RX 6600 |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x8 |
| TDP | 450 W | 132 W✓ |
| Power Connectors | 1x 16-pin | 1x 8-pin |
| Released | Sep 2022 | Oct 2021 |
Related Reading
Why Amazon Is Flooded With Cheap, Off-Brand RX 580 Graphics Cards
Brands like AISURIX, Peladn, and MLLSE sell an 8GB RX 580 for under $100. Here's the truth about ex-mining silicon, the 'RX 580 2048SP' trick, and whether you should buy one.
The Budget Hero: Intel Arc A750 Real-World Review
Is the Intel Arc A750 still the king of budget 1080p gaming? We look at how years of driver maturity have transformed this GPU.