Radeon RX 6900 XT vs Radeon RX 7900 GRE
Performance-wise the Radeon RX 7900 GRE is out front, marginally faster, roughly 8% up on the Radeon RX 6900 XT.
Maximum Capacity Reached. Remove a model to add another. (2/2)
Comparable or lower specs
Radeon RX 7900 GRE vs Radeon RX 6900 XT: In-Depth Breakdown
Performance: Radeon RX 7900 GRE vs Radeon RX 6900 XT
The Radeon RX 7900 GRE is marginally faster, around 8% ahead of the Radeon RX 6900 XT. That gap is enough to move it up a tier: the Radeon RX 7900 GRE is comfortable at 4K with upscaling and native 1440p, while the Radeon RX 6900 XT is better matched to 1440p.
Power & Efficiency
The Radeon RX 7900 GRE sips power at 260W next to the Radeon RX 6900 XT's 300W, and still leads on performance-per-watt — quieter, cooler, and gentler on your PSU. Its more modern RDNA 3 architecture on a TSMC N5 process is part of why it does more with each watt.
Memory & Bandwidth
The Radeon RX 7900 GRE's memory is faster — 576 GB/s versus 512 GB/s — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The Radeon RX 7900 GRE is roughly 4 years newer than the Radeon RX 6900 XT (RDNA 3 vs RDNA 2), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: Radeon RX 6900 XT or Radeon RX 7900 GRE?
The Radeon RX 7900 GRE is the faster card. 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 Radeon RX 7900 GRE better than the Radeon RX 6900 XT?
Which is better for 4K gaming, the Radeon RX 6900 XT or the Radeon RX 7900 GRE?
Which should you buy: Radeon RX 6900 XT or Radeon RX 7900 GRE?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon RX 6900 XT | Radeon RX 7900 GRE |
|---|---|---|
| Architecture | RDNA 2 | RDNA 3 |
| Process Node | TSMC N7 | TSMC N5 |
| CUDA Cores (Stream Processors / Stream Processors) | 5,120 | 5,120 |
| Ray Tracing Cores | 80 | 80 |
| Tensor / AI Cores | — | 160 |
Clock Speeds
| Specification | Radeon RX 6900 XT | Radeon RX 7900 GRE |
|---|---|---|
| Base Clock | 1,825 MHz✓ | 1,287 MHz |
| Boost Clock | 2,250 MHz✓ | 2,245 MHz |
Memory
| Specification | Radeon RX 6900 XT | Radeon RX 7900 GRE |
|---|---|---|
| VRAM Capacity | 16 GB | 16 GB |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 256-bit | 256-bit |
| Memory Speed | 16 Gbps | 18 Gbps✓ |
| Bandwidth | 512 GB/s | 576 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 6900 XT | Radeon RX 7900 GRE |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| TDP | 300 W | 260 W✓ |
| Power Connectors | 2x 8-pin | 2x 8-pin |
| Released | Dec 2020 | Feb 2024 |