Sapphire Radeon RX 7900 XTX NITRO+ 24GB GDDR6 Silver
ASUS GeForce RTX 5080 PRIME 16GB GDDR7
Buy the Sapphire if you want 4K gaming with headroom to spare, 24GB of VRAM for longevity, and a card that owners consistently describe as quiet and cool under load.
Buy the ASUS if you want the best ray tracing and DLSS support right now, and you're okay paying a premium for 16GB of GDDR7 that might feel tight in a couple years.
Key Differences
- VRAM is the big one: 16GB on the ASUS vs 24GB on the Sapphire. Owners of the ASUS already call the 16GB ceiling a concern, while Sapphire buyers specifically praise the 24GB for future-proofing.
- Ray tracing and upscaling are where the ASUS pulls ahead. It scores 99 vs 90 in ray tracing and has 336 tensor cores vs 192, so if you care about DLSS and RT performance, the Nvidia card is the clear pick.
- Raw compute tells a different story than gaming benchmarks. The Sapphire crushes FP16 at 122.8 TFLOPS vs 56.3, and edges out FP32 too. For content creation or compute-heavy work, the Sapphire has more muscle.
- Customer sentiment favors the Sapphire: 88/100 vs 82/100. ASUS owners complain about the price being above MSRP and mediocre overclocking headroom, while Sapphire owners mostly just warn you need an 850W+ PSU.
- Power draw is close but the Sapphire is slightly more efficient at 339W vs 360W TDP, despite having more VRAM and a wider 384-bit memory bus.
What Buyers Say
Sapphire Radeon RX 7900 XTX NITRO+ 24GB GDDR6 Silver
The Sapphire Nitro+ RX 7900 XTX earns strong praise for its blistering 4K performance, quiet operation, and reliable cooling. Most verified buyers highlight its compact size relative to competing high-end cards, the generous 24GB VRAM, and the absence of coil whine as major pluses. A few reviewers note that coil whine can occasionally occur, and the card demands a robust 850W+ PSU, but overall sentiment is overwhelmingly positive.
Pros
- Excellent 4K gaming performance
- Very quiet operation
- Efficient cooling with low temperatures
- Compact size for a high-end card
- 24GB VRAM for longevity
Cons
- High power consumption
- Occasional coil whine
- Requires 850W+ PSU minimum
- Large 4-slot design
ASUS GeForce RTX 5080 PRIME 16GB GDDR7
The ASUS Prime RTX 5080 delivers impressive gaming performance with excellent cooling and very quiet operation, earning high marks from most users. While many reviewers praise its compact size, solid build, and 0dB fan mode, a recurring concern is the high price — especially above MSRP — and the limited 16GB VRAM. Overall, it's seen as a worthy upgrade from 30-series cards for mainstream gamers, but not a value leader at its current street price.
Pros
- Excellent gaming performance
- Very quiet operation
- Compact SFF-friendly design
- Effective cooling
- Solid build quality
Cons
- High price above MSRP
- Limited 16GB VRAM
- Plastic build components
- No anti-sag bracket included
- Mediocre overclocking headroom
Scores
Specifications
| Sapphire Radeon RX 7900 XTX NITRO+ | ASUS GeForce RTX 5080 PRIME | |
|---|---|---|
| Chipset | ||
| GPU Chipset | Radeon RX 7900 XTX | GeForce RTX 5080 |
| Brand | AMD | NVIDIA |
| Architecture | RDNA 3 | Blackwell |
| Class | consumer | consumer |
| Process | 5 | 5 |
| Memory | ||
| VRAM | 24 GB★ | 16 GB |
| Memory Type | GDDR6 | GDDR7★ |
| Memory Bus | ||
| Bandwidth | ||
| ECC | — | ✗ |
| Compute | ||
| CUDA Cores | No data | |
| Stream Processors | No data | |
| Tensor Cores | ||
| RT Cores | 96★ | 84 |
| Base Clock | ||
| Boost Clock | ||
| FP16 TFLOPS | ||
| FP32 TFLOPS | 61.38999938964844★ | 56.279998779296875 |
| Performance | ||
| PassMark G3D | ||
| GPU Compute | ||
| Power & Cooling | ||
| TDP | 339★ | 360 |
| Recommended PSU | 800★ | 850 |
| Power Connectors | 3 x 8-Pin | 1 x 16-Pin |
| Cooler | Triple Fan | Triple Fan |
| Fans | 3 | 3 |
| Connectivity | ||
| Interface | PCI Express 4.0 x16 | PCI Express 5.0 x16 |
| DisplayPort | 2 | 3★ |
| HDMI | 2★ | 1 |
| USB-C | 1★ | — |
| Max Displays | 4 | 4 |
| Max Resolution | 7680 x 4320 | 7680 x 4320 |
| Physical | ||
| Length | 320 | 306★ |
| Slot Width | 4 | 2.5★ |
| Form Factor | ATX | ATX |
| Weight | 1.00 kg★ | 1.34 kg |
| Features | ||
| Ray Tracing | ✓ | ✓ |
| Upscaling | FSR 3.1 | DLSS 4.0 |
| AV1 Encode | ✓ | ✓ |
| VR Ready | — | ✓★ |
| DirectX | 12 Ultimate | 12 Ultimate |
| RGB | ✓ | ✓ |
Pros & Cons
Sapphire Radeon RX 7900 XTX NITRO+ 24GB GDDR6 Silver
- Strong connectivity (99th percentile)99th %ile
- Strong rt (96th percentile)96th %ile
- Strong compute (96th percentile)96th %ile
- Strong ai (95th percentile)95th %ile
- Below average affordability (16th percentile)16th %ile
ASUS GeForce RTX 5080 PRIME 16GB GDDR7
- Strong social proof (99th percentile)99th %ile
- Strong rt (98th percentile)98th %ile
- Strong feature (96th percentile)96th %ile
- Strong raster (94th percentile)94th %ile
- Below average affordability (21st percentile)
Pricing
Sapphire Radeon RX 7900 XTX NITRO+ 24GB GDDR6 Silver
ASUS GeForce RTX 5080 PRIME 16GB GDDR7
No current pricing available
Verdict
Both products are closely matched - Sapphire Radeon RX 7900 XTX NITRO+ wins 12 specs while ASUS GeForce RTX 5080 PRIME wins 10.
