Radeon RX 6900 XT
AMDconsumer| Overview | |
|---|---|
| Architecture | RDNA 2 (2020) |
| Launch date | 2020-12-08 |
| Transistor count | 26.8B |
| GPU target (gfx) | gfx1030 |
| Memory | |
| VRAM | 16 GB GDDR6 |
| Memory bandwidth | 512 GB/s |
| Cache | 128 MB |
| Compute — vector | |
| FP32 | 23.04 TFLOPS |
| FP16 | 46.08 TFLOPS |
| Cores & clocks | |
| Compute Units | 80 |
| Shader cores | 5,120 |
| Peak clock | 2,250 MHz |
| Board & system | |
| TDP | 300 W |
| Interconnect | PCIe only (no Infinity Fabric multi-GPU link) |
Compatible ROCm versions
fp16TFLOPS and fp8TFLOPS are both intentionally omitted, not just unconfirmed — RDNA 2 has no dedicated matrix/AI-accelerator cores at all (those were introduced with RDNA 3), so there's no matrix-throughput figure to report that's methodologically comparable to every other entry in this collection. AMD's own product page confirms this by omission: it lists only "Peak Half Precision (FP16 Vector) Performance: 46.08 TFLOPs" (packed-math vector rate, 2x FP32, not a matrix/tensor figure, captured here as fp16TFLOPSVector) with no "FP16 Matrix" row at all, unlike every RDNA3/RDNA4 card in this collection. Included anyway (unlike, say, a card with zero ROCm support) because ROCm officially supports gfx1030 and this site's whole point is covering the ROCm side other trackers skip — VRAM/bandwidth/TDP are still useful even without a compute-throughput number.
No pcieGen or eccSupport field — AMD's consumer Radeon spec page doesn't publish a PCIe bus generation or ECC-support line the way Instinct pages do (only "Additional Power Connector: 2x8-Pin" under General); left unconfirmed rather than assumed. formFactor similarly omitted — the page's "Board Type: Component" isn't a meaningful form-factor label like Instinct's "OAM Module"/"PCIe Add-in Card". Source: amd.com/en/products/graphics/desktops/radeon/6000-series/amd-radeon-rx-6900-xt.html ("Expand All" spec accordion), pulled 2026-09-01.