Quadro P4000 8GB

The Quadro P4000 8GB is a Pascal-generation NVIDIA GPU built on the GP104 architecture, manufactured on a TSMC 16nm process node with 7.2 billion transistors. Released in 2017, it delivers 5.3 TFLOPS of FP16 throughput and 5.3 TFLOPS BF16 — the two precision formats most commonly used for transformer model training and inference. The GP104 architecture represents NVIDIA's approach to balancing compute throughput, memory bandwidth, and power efficiency for data center AI workloads. At 105W TDP, the Quadro P4000 8GB sits in the low-power tier (105W), enabling high-density deployments and edge inference scenarios.

Memory capacity is 8GB of GDDR5 with 243 GB/s bandwidth. This determines which models can run without quantization: approximately 4B parameters at FP16 (2 bytes/param), 8B at INT8 (1 byte/param), or up to 16B parameters at INT4/GGUF quantization (0.5 bytes/param). These figures are theoretical maximums — actual capacity is reduced by KV cache, framework overhead, and activation memory, typically by 10–20% for inference and 30–40% for training. The arithmetic intensity ceiling is approximately 22 FLOP/byte (5.3 TFLOPS ÷ 243 GB/s). Most autoregressive LLM inference falls well below this threshold, making the 243 GB/s memory bandwidth the binding constraint on tokens-per-second throughput rather than raw TFLOPS.

The Quadro P4000 8GB uses PCIe 3.0 for host connectivity. Without NVLink, VRAM cannot be pooled across multiple cards — the single-card 8GB capacity is the hard ceiling for model size without model sharding over slower PCIe. For workloads that exceed 8GB, the alternative is pipeline parallelism (splitting model layers across cards) rather than tensor parallelism, which introduces inter-card communication overhead at each layer boundary. This makes the Quadro P4000 8GB best suited for workloads that fit within a single card's VRAM budget.

The primary workloads for the Quadro P4000 8GB are Legacy inference, Ultra-budget workloads, Small model experimentation. Legacy Pascal professional GPU. Very low cost per hour. 8GB GDDR5 limits to very small models. Suitable only for lightweight inference or experimentation. Key limitations to factor into your evaluation: Legacy Pascal — no Tensor Cores, no FP16 hardware acceleration; GDDR5/5X memory — very low bandwidth; Very limited AI throughput — suitable only for legacy or tiny workloads. When comparing this GPU against alternatives at similar price points, the most important metrics are memory bandwidth (for inference throughput), VRAM capacity (for model size), and FP16/BF16 TFLOPS (for training speed). Raw TFLOPS figures can be misleading for inference — a GPU with lower TFLOPS but higher memory bandwidth will often outperform a higher-TFLOPS card on tokens-per-second for memory-bound autoregressive generation.

In the broader GPU market, the Quadro P4000 8GB is a 9-year-old design that is increasingly being replaced by newer architectures in cloud deployments, though it remains available at competitive rental rates. CUDA compatibility is a significant advantage: the Quadro P4000 8GB benefits from the full NVIDIA software ecosystem including cuDNN, TensorRT, FlashAttention, and all major inference frameworks (vLLM, TGI, TensorRT-LLM). CUDA's maturity means optimized kernels are available for virtually every model architecture. For cloud rental, availability varies significantly by provider — some specialize in this GPU tier while others may have limited stock. Compare on-demand and spot pricing across providers using the rental comparison table on this page, and factor in region availability if latency is a concern for your inference workload.