NVIDIA Titan Xp 12GB vs NVIDIA Tesla P40 24GB

The Titan Xp is the newer part: Pascal, launched in 2017, against the Tesla P40's Pascal from 2016. Newer architectures typically add lower-precision formats and better throughput per watt, so check the precision rows your workload actually uses.

Dense throughput for the Titan Xp against the Tesla P40: FP32 12 vs 12 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.

Memory is 12 GB against 24 GB, fed at 548 GB/s versus 346 GB/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 250 W for the Titan Xp and 250 W for the Tesla P40. At FP32 that works out to 0.05 against 0.05 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.