NVIDIA A800 PCIe 80GB vs NVIDIA GeForce RTX 3090 Ti 24GB
The A800 delivers 7.8x the FP16 throughput of the GeForce RTX 3090 Ti (312 vs 40 TFLOPS dense). The A800 also carries 56 GB more memory (80 GB vs 24 GB).
NVIDIA A800 PCIe 80GB
Full specs →NVIDIA GeForce RTX 3090 Ti 24GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2022: the A800 on Ampere and the GeForce RTX 3090 Ti on Ampere.
Dense throughput for the A800 against the GeForce RTX 3090 Ti: FP64 9.7 vs 0.6 TFLOPS, FP32 20 vs 40 TFLOPS, FP16 312 vs 40 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 80 GB against 24 GB, fed at 1.9 TB/s versus 1.0 TB/s. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.
Power budgets are 300 W for the A800 and 450 W for the GeForce RTX 3090 Ti. At FP32 that works out to 0.07 against 0.09 TFLOPS per watt.
For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.
Frequently asked questions
Is the A800 faster than the GeForce RTX 3090 Ti?
At FP16 precision the A800 reaches 312 TFLOPS dense against 40 TFLOPS for the GeForce RTX 3090 Ti. The performance table on this page lists every published precision for both GPUs.
Which has more memory, the A800 or the GeForce RTX 3090 Ti?
The A800 carries 80 GB of VRAM versus 24 GB for the GeForce RTX 3090 Ti. Memory bandwidth is 1.9 TB/s for the A800 and 1.0 TB/s for the GeForce RTX 3090 Ti.
How much power do the A800 and the GeForce RTX 3090 Ti draw?
The A800 is rated at 300 W TDP and the GeForce RTX 3090 Ti at 450 W. On FP32 throughput per watt, the GeForce RTX 3090 Ti is the more efficient part.
Can I rent the A800 or the GeForce RTX 3090 Ti in the cloud?
Yes. Live cloud listings tracked by Flopper start at $0.27 per GPU hour. The rental pricing section on this page lists current providers and rates for both GPUs.
Where to Rent
Get Comparison Updates
New GPUs added weekly. Be the first to see how they compare.