Sapphire Radeon RX 7900 XTX NITRO+ 24GB GDDR6 Silver
ASRock Radeon RX 6600 XT Challenger D 8GB GDDR6 Black
Grab the ASRock Challenger D if you're on a tight budget and just want smooth 1080p gaming at high settings without breaking the bank.
Get the Sapphire NITRO+ if you want top-tier 4K gaming, ray tracing, or AI workloads, and you have a beefy 850W+ PSU to feed it.
Key Differences
- VRAM is 8GB vs 24GB. That's not just a spec bump, it's the difference between running modern 4K textures comfortably and hitting a wall in a year or two.
- The Sapphire has 6144 stream processors vs 2048 on the ASRock, and 96 RT cores vs 32. In real terms, the Sapphire scores 91/100 for 4K gaming while the ASRock manages 28/100.
- Memory bandwidth is 960 GB/s on the Sapphire vs 256 GB/s on the ASRock. The 384-bit bus on the Sapphire means it can actually feed those 24GB of VRAM without choking.
- Power draw is a real trade-off. The Sapphire needs an 850W+ PSU and pulls way more juice, while the ASRock is far more modest. Your electricity bill will notice the difference.
- Customer sentiment is strong for both, but the Sapphire has 688 reviews at 4.4/5 with owners praising the quiet operation and compact size for a high-end card. The ASRock has just 8 reviews, and some users hit driver headaches when switching from Nvidia.
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
ASRock Radeon RX 6600 XT Challenger D 8GB GDDR6 Black
No customer feedback yet
Scores
Specifications
| Sapphire Radeon RX 7900 XTX NITRO+ | ASRock Radeon RX 6600 XT Challenger D | |
|---|---|---|
| Chipset | ||
| GPU Chipset | Radeon RX 7900 XTX | Radeon RX 6600 XT |
| Brand | AMD | AMD |
| Architecture | RDNA 3 | RDNA 2 |
| Class | consumer | consumer |
| Process | 5★ | 7 |
| Memory | ||
| VRAM | 24 GB★ | 8 GB |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | ||
| Bandwidth | ||
| Compute | ||
| Stream Processors | ||
| Tensor Cores | No data | |
| RT Cores | 96★ | 32 |
| Base Clock | ||
| Boost Clock | ||
| FP16 TFLOPS | ||
| FP32 TFLOPS | 61.38999938964844★ | 10.600000381469727 |
| Performance | ||
| PassMark G3D | ||
| GPU Compute | ||
| Power & Cooling | ||
| TDP | 339 | 160★ |
| Recommended PSU | 800 | 500★ |
| Power Connectors | 3 x 8-Pin | 1 x 8-pin |
| Cooler | Triple Fan★ | Dual Fan |
| Fans | 3★ | 2 |
| Connectivity | ||
| Interface | PCI Express 4.0 x16 | PCI Express 4.0 |
| DisplayPort | 2 | 3★ |
| HDMI | 2★ | 1 |
| USB-C | 1★ | — |
| Max Displays | 4 | 4 |
| Max Resolution | 7680 x 4320 | 7680 x 4320 |
| Physical | ||
| Length | 320 | 269★ |
| Slot Width | 4 | 2★ |
| Form Factor | ATX | Full Height |
| Weight | 1.00 kg | 0.64 kg★ |
| Features | ||
| Ray Tracing | ✓ | ✓ |
| Upscaling | FSR 3.1 | FSR |
| AV1 Encode | ✓★ | — |
| 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 (19th percentile)19th %ile
ASRock Radeon RX 6600 XT Challenger D 8GB GDDR6 Black
- Strong efficiency (66th percentile)
- Below average vram (31st percentile)
- Below average compute (33rd percentile)
Pricing
Verdict
Scores 96 overall, wins 8 of 8 usage categories and 19 of 38 specs.
