ZOTAC GeForce RTX 4090 AMP Extreme 24GB GDDR6X
Sapphire Radeon RX 7900 XTX NITRO+ 24GB GDDR6 Silver
What Buyers Say
ZOTAC GeForce RTX 4090 AMP Extreme 24GB GDDR6X
The Zotac RTX 4090 is a powerhouse for gaming, rendering, and machine learning, delivering top-tier performance with high frame rates and cool temperatures. However, it's plagued by significant issues like a buggy LED software, fan rattling, and compatibility problems with some motherboards, especially for the high price. Most users praise its speed and quiet operation, but a few report frustrating stuttering and cold boot BIOS issues. Overall, it's a beast if you can afford it and have the right setup.
Pros
- Top-notch 4K gaming performance
- Excellent for rendering and machine learning
- Runs cool under heavy load (60-70°C)
- Minimal coil whine
- Quiet fans in most conditions
Cons
- Extremely high price ($1,700+)
- Bulky size, may not fit standard cases
- Buggy LED software with flashing issues
- Fan rattling noise on some units
- Occasional frame rate stutters
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
Scores
Specifications
| ZOTAC GeForce RTX 4090 AMP Extreme | Sapphire Radeon RX 7900 XTX NITRO+ | |
|---|---|---|
| Chipset | ||
| GPU Chipset | GeForce RTX 4090 | Radeon RX 7900 XTX |
| Brand | NVIDIA | AMD |
| Architecture | Ada Lovelace | RDNA 3 |
| Class | consumer | consumer |
| Process | 5 | 5 |
| Memory | ||
| VRAM | 24 GB | 24 GB |
| Memory Type | GDDR6X★ | GDDR6 |
| Memory Bus | ||
| Bandwidth | ||
| Compute | ||
| CUDA Cores | No data | |
| Stream Processors | No data | |
| Tensor Cores | ||
| RT Cores | 76 | 96★ |
| Base Clock | ||
| Boost Clock | ||
| FP16 TFLOPS | ||
| FP32 TFLOPS | 32.97999954223633 | 61.38999938964844★ |
| Performance | ||
| PassMark G3D | ||
| GPU Compute | ||
| Power & Cooling | ||
| TDP | 450 | 339★ |
| Recommended PSU | 1,000 | 800★ |
| Power Connectors | 1 x 12VHPWR | 3 x 8-Pin |
| Cooler | Triple Fan | Triple Fan |
| Fans | 3 | 3 |
| Connectivity | ||
| Interface | PCI Express 4.0 | PCI Express 4.0 x16 |
| DisplayPort | 3★ | 2 |
| HDMI | 1 | 2★ |
| USB-C | — | 1★ |
| Max Displays | 4 | 4 |
| Max Resolution | 8K (7680x4320) at 60Hz | 7680 x 4320 |
| Physical | ||
| Length | 355 | 320★ |
| Slot Width | 3.5★ | 4 |
| Form Factor | Full Height | ATX |
| Weight | 3.17 kg | 1.00 kg★ |
| Features | ||
| Ray Tracing | ✓ | ✓ |
| Upscaling | DLSS | FSR 3.1 |
| AV1 Encode | — | ✓★ |
| VR Ready | ✓★ | — |
| DirectX | 12 Ultimate | 12 Ultimate |
| RGB | ✓ | ✓ |
Pros & Cons
ZOTAC GeForce RTX 4090 AMP Extreme 24GB GDDR6X
- Strong rt (99th percentile)99th %ile
- Strong compute (97th percentile)97th %ile
- Strong raster (97th percentile)97th %ile
- Strong vram (93rd percentile)93rd %ile
- Below average affordability (4th percentile)4th %ile
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
Verdict
Scores 96 overall, wins 8 of 8 usage categories and 14 of 40 specs.