GPU memory and RAM
GPU memory usually limits model size; RAM supports apps, data, and model offload.
Component overview
PNY NVIDIA RTX PRO 5000 72GB Blackwell Small Box
PNY graphics card
CategoryGraphics cardsBrandPNY
Technical specifications
Brand
PNY
Verified manufacturer part number
VCNRTXPRO5000-72-SB
Release
2025 Q1
VRAM
72GB GDDR7 ECC
Architecture
Blackwell
Display Power
300W
Connector Standard
1x PCIe CEM5 16-pin
Minimum PSU
700W
Dual GPU Capable
No
Memory Bus
384-bit
Bandwidth
1344 GB/s
CUDA Cores
14080
Tensor Cores
440
RT Cores
110
Base / Boost Clock
1740 / 2377 MHz
TDP
300W
PCIe Generation
PCIe 5.0
Slot Width
2-slot
Length
267mm
Power Connectors
1x PCIe CEM5 16-pin
Recommended PSU
700W
FP32
65 TFLOPS
Inference Notes
Exact PNY Small Box SKU VCNRTXPRO5000-72-SB with 72GB ECC in one GPU. Two independent Estonian retailer offers were verified; Small Box accessories, current stock, and price are rechecked before quote.
70B-class target requires validation
Selected 70B-class Q4 models need high VRAM or Apple unified memory, short-to-moderate context, and runtime validation.
70B-class fit is still context and runtime sensitive; validate the exact model, quantization, backend, and prompt length before relying on it.
AI terms in plain language
CUDA
NVIDIA’s software layer for many AI tools. Macs and AMD GPUs do not run CUDA workflows the same way.
Apple unified memory
Memory shared by the CPU, GPU, macOS, and apps; it is not the same as NVIDIA VRAM.
7B / 8B / 14B / 70B
Approximate model size in billions of parameters; larger models usually need more memory.
Quantized models
Lower-precision models, such as Q4, that use less memory with possible quality or speed tradeoffs.
Context length
How much text the model can keep in mind at once. Longer context uses more memory.
Inference
Running an existing model for chat, coding help, summaries, or document workflows.
Fine-tuning vs adapter tuning
LoRA and QLoRA train small adapters and need fewer resources than full fine-tuning.
Throughput (tokens/s)
Model output speed. Compare the same model, quantization, context, runtime, and user count; prompt processing is a separate measurement.
Price estimate history
Uses market prices where available and reference estimates otherwise.
Component estimate: €10,401·Reference estimate·Quote estimate: €12,559·Component service and order handling: +15%
Low€9,423High€10,401Avg€9,9987 data points
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Pricing & Purchase
Component estimate€10,401
Reference estimateLatest graph value: €10,401
Planning estimate with component service€12,559
€12,559
Estimated total. Final price confirmed before ordering.
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Support and questions continue through the order or quote email thread.
Local AI examples
Local AI examples
Good fit for private chatGood fit for coding helpGood fit for document summaries70B-class models need strict caveats
Recommended model
Llama 3.3 70B Instruct
A clear upper-limit example for checking whether a machine can attempt a 70B-class model.
Comfortable GPU fit
Usable
ollama run llama3.3:70b
Likely good memory headroom for this quantized model at normal context sizes.
- 128GB system/unified memory available
- 72GB effective accelerator memory for model weights and cache
Qwen3.6 35B-A3B
Coding agents, repository analysis, and complex local assistant workflows
A capable MoE model that gives 32GB and 48GB workstations a meaningfully heavier coding target.
Expected experience: Usable
Likely good memory headroom for this quantized model at normal context sizes.
- 128GB system/unified memory available
Gemma 4 12B
Private assistant chat, document understanding, and image or audio analysis
A current multimodal everyday model that makes good use of a 16GB GPU.
Expected experience: Fast
Likely good memory headroom for this quantized model at normal context sizes.
- 128GB system/unified memory available
Expandable technical details
Assumptions
- GPU VRAM assumption: 72GB from PNY NVIDIA RTX PRO 5000 72GB Blackwell Small Box.
- Assumed RAM: 128GB.
- Ratings include model weights, estimated KV cache, runtime overhead, and safety margin for one local model running at a time. Treat them as fit guidance, not a speed guarantee.
- GPU product pages assume a sensible amount of system RAM for this VRAM class. Complete build pages show page-specific RAM fit.
Llama 3.3 70B Instruct technical details
Family: Meta Llama 3.3
Parameters: 70.60B
Structure: 70.6B dense
License: Llama 3.3 Community License; allowed with terms; gated access. For guidance only; review the model licence before commercial use.
Native context: 131,072 tokens
Quantization: Q4_K_M
Approx. Q4 weights: 42.5 GB
Default estimate: 51 GB @ 4,096 tokens
Weights / KV / runtime / margin: 42.5 GB / 3 GB / 1.5 GB / 4 GB
CPU/RAM fallback: Not recommended
VRAM: 48 GB minimum / 64 GB recommended
RAM: 64 GB minimum / 96 GB recommended
Current run mode: Comfortable GPU fit
Expected experience: Usable
Full GPU offload: Often limited
Context warning: The Q4 weights alone use about 42.5GB before KV cache, runtime overhead, and desktop headroom.
| Context | Weights | KV | Runtime | Margin | Estimated GPU memory |
|---|---|---|---|---|---|
| 4K | 42.5 GB | 3 GB | 1.5 GB | 4 GB | 51 GB |
| 8K | 42.5 GB | 6 GB | 1.5 GB | 4 GB | 54 GB |
| 16K | 42.5 GB | 12 GB | 1.5 GB | 4.5 GB | 60.5 GB |
| 32K | 42.5 GB | 24 GB | 1.5 GB | 5.5 GB | 73.5 GB |
Swipe the table sideways to inspect every memory estimate.
Qwen3.6 35B-A3B technical details
Family: Qwen3.6
Parameters: 35B
Structure: 35B total / 3B active MoE
License: Apache License 2.0; allowed. For guidance only; review the model licence before commercial use.
Native context: 262,144 tokens
Extended context: 1,010,000 via YaRN; not a default fit assumption
Quantization: Q4_K_M
Approx. Q4 weights: 24 GB
Default estimate: 31.5 GB @ 8,192 tokens
Weights / KV / runtime / margin: 24 GB / 2.5 GB / 2 GB / 3 GB
CPU/RAM fallback: Not recommended
VRAM: 32 GB minimum / 48 GB recommended
RAM: 64 GB minimum / 64 GB recommended
Current run mode: Comfortable GPU fit
Expected experience: Usable
Full GPU offload: Only when the memory estimate and context fit
Context warning: Long repository context can use the remaining headroom quickly, especially on 32GB GPUs.
| Context | Weights | KV | Runtime | Margin | Estimated GPU memory |
|---|---|---|---|---|---|
| 4K | 24 GB | 1.5 GB | 2 GB | 3 GB | 30.5 GB |
| 8K | 24 GB | 2.5 GB | 2 GB | 3 GB | 31.5 GB |
| 16K | 24 GB | 5 GB | 2 GB | 3.5 GB | 34.5 GB |
| 32K | 24 GB | 10 GB | 2 GB | 4 GB | 40 GB |
Swipe the table sideways to inspect every memory estimate.
Gemma 4 12B technical details
Family: Google Gemma 4
Parameters: 11.95B
Structure: 11.95B dense
License: Apache License 2.0; allowed. For guidance only; review the model licence before commercial use.
Native context: 262,144 tokens
Quantization: Q4_0 QAT
Approx. Q4 weights: 7.2 GB
Default estimate: 11.5 GB @ 8,192 tokens
Weights / KV / runtime / margin: 7.2 GB / 1.5 GB / 1.2 GB / 1.5 GB
CPU/RAM fallback: Not recommended
VRAM: 12 GB minimum / 16 GB recommended
RAM: 24 GB minimum / 32 GB recommended
Current run mode: Comfortable GPU fit
Expected experience: Fast
Full GPU offload: Only when the memory estimate and context fit
Context warning: Its large context window still requires substantial KV-cache headroom.
| Context | Weights | KV | Runtime | Margin | Estimated GPU memory |
|---|---|---|---|---|---|
| 4K | 7.2 GB | 1 GB | 1.2 GB | 1.5 GB | 11 GB |
| 8K | 7.2 GB | 1.5 GB | 1.2 GB | 1.5 GB | 11.5 GB |
| 16K | 7.2 GB | 2.5 GB | 1.2 GB | 1.5 GB | 12.5 GB |
| 32K | 7.2 GB | 5 GB | 1.2 GB | 2 GB | 15.5 GB |
Swipe the table sideways to inspect every memory estimate.
Research sources
Researched: 2026-07-30
Local AI performance is approximate. Results depend on quantization, context length, backend, drivers, and whether the model plus KV cache fits in VRAM or Apple unified memory.
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