RTX 5090 vs RTX 4090
Manufacturer specifications of the RTX 5090 and the RTX 4090, side by side, per GPU. A value the manufacturer does not publish for the exact model is marked as such, never estimated.
NVIDIA GeForce RTX 5090 32GB
Blackwell
- GPU memory
- 32 GB
- Memory bandwidth
- 1,792 GB/s
Live price on EverXCloud · from $0.69 per GPU-hour
Suited workloads
NVIDIA GeForce RTX 4090 24GB
Ada Lovelace
- GPU memory
- 24 GB
- Memory bandwidth
- 1,008 GB/s
Live price on EverXCloud · from $0.33 per GPU-hour
Suited workloads
Key differences
- The RTX 5090 has 1.3× the GPU memory of the RTX 4090 (32 GB vs 24 GB).
- The RTX 5090 has 1.8× the memory bandwidth of the RTX 4090 (1,792 vs 1,008 GB/s), which usually sets the pace of LLM token generation.
Specifications
| Specification | RTX 5090 | RTX 4090 |
|---|---|---|
| GPU memory | 32 GB (higher) | 24 GB |
| Memory type | GDDR7 | GDDR6X |
| Memory bandwidth | 1,792 GB/s (higher) | 1,008 GB/s |
| Max power | 575 W | 450 W |
| Architecture | Blackwell | Ada Lovelace |
| Interconnect | PCIe 5.0 | PCIe 4.0 |
The higher value of each measured row is shown in bold. Manufacturer specifications, per GPU. Tensor throughput is shown without sparsity. Values the manufacturer does not publish for this exact model are left out.
What fits in memory, on one GPU
| Workload | RTX 5090 | RTX 4090 |
|---|---|---|
| LLM inference, 16-bit | ≈ 10B parameters | ≈ 9B parameters |
| LLM inference, 4-bit | ≈ 40B parameters | ≈ 30B parameters |
| Full training, mixed precision | ≈ 1B parameters | ≈ 1B parameters |
Cautious estimates counting 80% of memory for model weights; context length, batch size and framework change the real limit. Several GPUs together hold larger models.
RTX 5090 vs RTX 4090: frequently asked questions
Which has more memory, the RTX 5090 or the RTX 4090?
The RTX 5090 has 32 GB of GPU memory, against 24 GB for the RTX 4090.
Which is faster for LLM inference, the RTX 5090 or the RTX 4090?
Generating tokens is usually bound by memory bandwidth, and the RTX 5090 has 1.8× the bandwidth of the RTX 4090. Memory size then decides which models fit. Measure your own model before a large run.
Can I rent the RTX 5090 and the RTX 4090 by the hour?
Yes, when sellers list them on the EverXCloud spot exchange: you buy GPU hours at the live price from a prepaid balance in euros, US dollars or pounds. Prices are shown excluding tax and EverXCloud is the merchant of record for every rental.
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