NVIDIA GeForce RTX 3090
VRAM
24 GB
Memory
GDDR6X
Bandwidth
936 GB/s
FP16
142 TF
TDP
350 W
Memory and compute
Architecture and power
Notes
FP16 dense tensor with FP16 accumulate. Budget 24GB self-host option on the used market.
Models that may fit on NVIDIA GeForce RTX 3090
Estimates based on INT8 quantization. Actual fit depends on framework and batch size.
More GPUs by NVIDIA
The manufacturer's other cards in the catalog, largest memory first, with bandwidth and power where published.
Frequently asked questions about NVIDIA GeForce RTX 3090
Answered from the entry's own figures: memory, which models fit, bandwidth, power and the card's class.
NVIDIA GeForce RTX 3090 has 24 GB of GDDR6X at 936 GB/s. At INT8 a model's weights take about one byte per parameter, so the card holds roughly a 19B-parameter model with room for context; larger models need several cards or a lower precision.
From the catalog's estimates at INT8, NVIDIA Nemotron Nano 12B V2 VL BF16, Qwen 2.5 14B Instruct, Gemma 3 12B and Moonlight 16B A3B Instruct fit on a single NVIDIA GeForce RTX 3090 with their default context. The list on this page shows the estimated memory each takes; the capacity planner sizes any model against this card for your own context length, batch size and request rate.
936 GB/s. Bandwidth bounds how fast a model generates tokens, because every token reads the whole set of weights and the KV cache from memory; at this rate a 19B model at INT8 could be read on the order of 49 times a second on one card, before batching and framework efficiency.
NVIDIA GeForce RTX 3090 has a TDP of 350 W, in the PCIe form factor. Budget the TDP per card plus host overhead when sizing a server's power and cooling.
NVIDIA GeForce RTX 3090 is a consumer card from the gaming line, the lowest price per card and no inter-card link, built on the Ampere architecture and released in 2020. It has no multi-GPU interconnect, so a model must fit on one card or be split over the slower PCIe bus.
Specifications from the manufacturer's published material; a figure that is not published is shown as such, and a derived one is explained in the notes.
Added Jul 30, 2026 · Last updated Jul 30, 2026
Explore more
Companion tools that draw on the same catalog and routing engine.
Put intelligence in the middle.
One gateway in front of every model, with your policies applied and every decision on record. Start with $5 of credit and 5,000 routing decisions a month, no card required.