Best GPUs for Mining CORTEX in 2026: Hashrate and Power Efficiency Compared
Choosing a graphics card for CORTEX mining requires more than looking at the highest hashrate. Power consumption, memory capacity, hardware age and efficiency all affect how practical a GPU may be in a mining rig. This comparison examines eight real GPUs using their CORTEX hashrate, power draw and VRAM.
The figures below are based on Minector’s internal data. Hashrate values are presented exactly as provided, while efficiency is calculated as CORTEX hashrate divided by power draw in watts. Electricity prices, hardware costs, cooling and pool fees are not included, so profitability can vary significantly between locations and mining setups.
CORTEX GPU comparison at a glance
The NVIDIA RTX 5090 delivers the highest CORTEX hashrate in this group at 13.0500. However, the NVIDIA RTX 5070 Ti leads the efficiency ranking because it combines a hashrate of 6.8500 with a power draw of only 185 watts.
| GPU | Manufacturer | Release year | VRAM | Power draw | CORTEX hashrate |
|---|---|---|---|---|---|
| NVIDIA RTX 5090 | NVIDIA | 2025 | 32 GB | 420 W | 13.0500 |
| NVIDIA RTX 4090 | NVIDIA | 2022 | 24 GB | 320 W | 9.3500 |
| NVIDIA RTX 5080 | NVIDIA | 2025 | 16 GB | 240 W | 8.4200 |
| NVIDIA RTX 5070 Ti | NVIDIA | 2025 | 16 GB | 185 W | 6.8500 |
| NVIDIA RTX 4080 Super | NVIDIA | 2024 | 16 GB | 205 W | 6.4200 |
| NVIDIA RTX 4080 | NVIDIA | 2022 | 16 GB | 200 W | 6.2200 |
| AMD Radeon RX 7900 XTX | AMD | 2022 | 24 GB | 290 W | 5.8200 |
| NVIDIA RTX 3090 Ti | NVIDIA | 2022 | 24 GB | 340 W | 5.6500 |
Best CORTEX GPUs ranked by hashrate efficiency
Hashrate-per-watt is a useful way to compare mining hardware when electricity is a major operating cost. The ranking below divides each GPU’s CORTEX hashrate by its stated power draw. A higher figure means more hashrate for each watt consumed, although it does not by itself determine total profitability.
| Rank | GPU | CORTEX hashrate | Power draw | Hashrate per watt |
|---|---|---|---|---|
| 1 | NVIDIA RTX 5070 Ti | 6.8500 | 185 W | 0.03703 |
| 2 | NVIDIA RTX 5080 | 8.4200 | 240 W | 0.03508 |
| 3 | NVIDIA RTX 4080 Super | 6.4200 | 205 W | 0.03132 |
| 4 | NVIDIA RTX 4080 | 6.2200 | 200 W | 0.03110 |
| 5 | NVIDIA RTX 5090 | 13.0500 | 420 W | 0.03107 |
| 6 | NVIDIA RTX 4090 | 9.3500 | 320 W | 0.02922 |
| 7 | AMD Radeon RX 7900 XTX | 5.8200 | 290 W | 0.02007 |
| 8 | NVIDIA RTX 3090 Ti | 5.6500 | 340 W | 0.01662 |
GPU-by-GPU analysis
NVIDIA RTX 5090
The RTX 5090 produces the highest CORTEX hashrate in the comparison, reaching 13.0500. Its 32 GB of VRAM is also the largest memory capacity among the listed GPUs, which provides additional headroom for demanding workloads.
Its main disadvantage is the 420 W power draw. That consumption places it fifth for hashrate-per-watt at 0.03107, so the RTX 5090 is primarily a choice for miners prioritizing maximum output from each GPU rather than the lowest energy use.
NVIDIA RTX 4090
The RTX 4090 records a CORTEX hashrate of 9.3500 with a power draw of 320 W. Its 24 GB of VRAM is suitable for miners who want substantial memory capacity without moving to the RTX 5090.
With efficiency of 0.02922 hashrate per watt, it ranks below the newer RTX 5080 and RTX 5070 Ti in this comparison. It remains a high-output option, but its energy profile should be evaluated carefully against local electricity costs.
NVIDIA RTX 5080
The RTX 5080 reaches 8.4200 at 240 W and ranks second for efficiency at 0.03508. This combination makes it one of the strongest balanced choices in the group, offering considerably more CORTEX hashrate than the RTX 5070 Ti while using less power than the RTX 4090 and RTX 5090.
Its 16 GB of VRAM is lower than the capacity of the RTX 5090, RTX 4090, RX 7900 XTX and RTX 3090 Ti. For the CORTEX figures presented here, however, it offers a strong blend of output and power efficiency.
NVIDIA RTX 5070 Ti
The RTX 5070 Ti is the efficiency leader, producing 6.8500 at 185 W. Its calculated result of 0.03703 hashrate per watt is the highest among all eight GPUs.
Although it does not match the larger cards in absolute hashrate, its 16 GB of VRAM and low power draw may make it attractive for energy-conscious mining builds. It is particularly relevant where electricity costs are high or where heat output must be kept under control.
NVIDIA RTX 4080 Super and RTX 4080
The RTX 4080 Super delivers 6.4200 at 205 W, while the RTX 4080 reaches 6.2200 at 200 W. Their efficiency results are 0.03132 and 0.03110 respectively, placing both below the RTX 5070 Ti and RTX 5080 but above the RTX 4090.
Both models include 16 GB of VRAM. The 4080 Super has a slightly higher hashrate, while the standard RTX 4080 uses 5 W less power in the supplied data. The practical choice between them depends on acquisition cost, availability and the miner’s preference for output or lower stated consumption.
AMD Radeon RX 7900 XTX
The RX 7900 XTX is the only AMD GPU in this comparison. It produces a CORTEX hashrate of 5.8200 with a 290 W power draw and includes 24 GB of VRAM.
Its efficiency is 0.02007 hashrate per watt, ranking seventh. That result is lower than every NVIDIA card listed except the RTX 3090 Ti, based on the supplied CORTEX data.
NVIDIA RTX 3090 Ti
The RTX 3090 Ti records 5.6500 at 340 W and has 24 GB of VRAM. It ranks last for efficiency at 0.01662 hashrate per watt.
The card may still be considered when used hardware is readily available, but its combination of the lowest listed efficiency and high power draw makes energy costs especially important. Older hardware should also be inspected carefully for cooling condition and previous operating history.
How to choose a CORTEX mining GPU
Start by deciding whether your priority is maximum hashrate or energy efficiency. The RTX 5090 is the output leader, while the RTX 5070 Ti is the efficiency leader. The RTX 5080 sits between those goals, providing the second-best efficiency and the third-highest hashrate.
VRAM is another consideration when comparing long-term hardware value. The RTX 5090 offers 32 GB, four GPUs provide 24 GB, and the RTX 5080, RTX 5070 Ti, RTX 4080 Super and RTX 4080 each provide 16 GB.
Before purchasing, miners should also account for electricity pricing, ventilation, power-supply capacity, GPU availability and the cost of the complete rig. A higher hashrate-per-watt result can help reduce operating pressure, but actual returns depend on changing CORTEX conditions, coin prices, network factors and pool fees.
Conclusion
The best CORTEX mining GPU depends on the goal of the rig. The NVIDIA RTX 5090 is the clear hashrate champion at 13.0500, but its 420 W power draw reduces its efficiency ranking. For the best hashrate-per-watt result, the NVIDIA RTX 5070 Ti leads at 0.03703.
The NVIDIA RTX 5080 is the strongest middle-ground option in this data set, combining 8.4200 hashrate with 240 W and an efficiency result of 0.03508. The RTX 4080 Super and RTX 4080 also remain balanced choices, while the RX 7900 XTX and RTX 3090 Ti rank lower on the supplied efficiency figures.
Frequently Asked Questions
Which GPU has the highest CORTEX hashrate?
The NVIDIA RTX 5090 has the highest listed CORTEX hashrate at 13.0500. It also has 32 GB of VRAM, but its power draw is 420 W.
Which GPU is most efficient for CORTEX mining?
The NVIDIA RTX 5070 Ti ranks first for hashrate-per-watt at 0.03703. It produces 6.8500 at a stated power draw of 185 W.
Is the RTX 5080 better than the RTX 4090 for efficiency?
Based on the supplied data, yes. The RTX 5080 reaches 0.03508 hashrate per watt, compared with 0.02922 for the RTX 4090. The RTX 5080 also uses 240 W, while the RTX 4090 uses 320 W.
Does more VRAM always mean better CORTEX mining performance?
No. VRAM capacity is an important hardware specification, but it does not automatically determine hashrate or efficiency. In this comparison, GPUs with 16 GB, 24 GB and 32 GB of VRAM appear across different positions in both the hashrate and efficiency rankings.
