NVIDIA GeForce RTX 3090 Ti vs NVIDIA GeForce RTX 4080 — GPU Comparison (Jul 2026)
NVIDIA GeForce RTX 3090 Ti (24GB GDDR6X, 40 TFLOPS FP16, Ampere) vs NVIDIA GeForce RTX 4080 (16GB GDDR6X, 48.7 TFLOPS FP16, Ada Lovelace)
Bottom Line: NVIDIA GeForce RTX 3090 Ti vs NVIDIA GeForce RTX 4080
NVIDIA GeForce RTX 3090 Ti and NVIDIA GeForce RTX 4080 are closely matched — each leads in several categories, so the right pick depends on your priorities.
Where NVIDIA GeForce RTX 3090 Ti leads
- VRAM (24 GB vs 16 GB)
- Memory Bandwidth (1,008 GB/s vs 717 GB/s)
Where NVIDIA GeForce RTX 4080 leads
- FP16 (48.7 TFLOPS vs 40 TFLOPS)
- FP32 (24.4 TFLOPS vs 20 TFLOPS)
- TDP (320W vs 450W)
Choose NVIDIA GeForce RTX 3090 Ti for Training, fine-tuning, rendering. Choose NVIDIA GeForce RTX 4080 for Gaming, inference, fine-tuning.
Frequently Asked Questions
Is NVIDIA GeForce RTX 3090 Ti or NVIDIA GeForce RTX 4080 better?
It is close — NVIDIA GeForce RTX 3090 Ti and NVIDIA GeForce RTX 4080 each lead in several categories. Compare the points that matter most to you below.
Which has a better FP16, NVIDIA GeForce RTX 3090 Ti or NVIDIA GeForce RTX 4080?
NVIDIA GeForce RTX 4080 (48.7 TFLOPS vs 40 TFLOPS).
Which has a better VRAM, NVIDIA GeForce RTX 3090 Ti or NVIDIA GeForce RTX 4080?
NVIDIA GeForce RTX 3090 Ti (24 GB vs 16 GB).
|
NVIDIA GeForce RTX 3090 Ti
24GB GDDR6X · Ampere
|
NVIDIA GeForce RTX 4080
16GB GDDR6X · Ada Lovelace
|
||
|---|---|---|---|
| Specifications | |||
| Manufacturer | NVIDIA | NVIDIA | |
| Architecture | Ampere | Ada Lovelace | |
| VRAM | 24 GB GDDR6X | 16 GB GDDR6X | |
| Memory Bandwidth | 1,008 GB/s | 717 GB/s | |
| FP16 (Tensor) | 40.0 TFLOPS | 48.7 TFLOPS | |
| FP32 | 20.0 TFLOPS | 24.4 TFLOPS | |
| TDP | 450W | 320W | |
| Release Year | 2022 | 2022 | |
| Segment | Consumer | Consumer | |
| Best For | Training fine-tuning rendering | Gaming inference fine-tuning | |
| Cloud Pricing | |||
| Cheapest On-Demand | — | — | |
| Cheapest Spot | — | — | |
| Providers | 0 | 0 | |
NVIDIA GeForce RTX 3090 Ti
NVIDIA GeForce RTX 4080