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Build for

Llama 3.2 3B

Hardware requirement

Estimated

Running Llama 3.2 3B as Q4_K_M in Ollama at ~8,192 tokens of context.

VRAM to run on GPU
4 GB
8 GB class card
System RAM
16 GB
recommended
Storage
2 TB
NVMe recommended
GPU importance
Critical
memory-bound workload
How this is calculated
Model weights
derived
1.9 GB 3.213 billion parameters × 0.58 bytes/param (Q4_K_M) ≈ 1.9 GB.
KV cache (context memory)
derived
0.9 GB 8,192 tokens × 28 layers × 2 × 8 KV heads × 128 head dim × 2 bytes ≈ 0.9 GB. Grows with context length.
Runtime overhead
estimate
1 GB Fixed VRAM overhead for Ollama (activations, CUDA context, fragmentation headroom).
Total VRAM to run fully on GPU
estimate
3.8 GB Weights + KV cache + overhead. This is what you need to keep the whole model on the graphics card for full speed.
Recommended system RAM
estimate
16 GB Headroom to load the model, run the OS, and hold any layers offloaded from the GPU. Rounded up to a standard kit size.
Storage
estimate
2 TB NVMe recommended Local model files are large (often tens of GB each). An NVMe SSD keeps load times reasonable.

Memory figures are estimates derived from published model facts using a fixed method. They are not benchmarks. We do not publish tokens-per-second figures because we have no measured source for them.

Recommended builds

Minimum

"It runs."

$520 reference total

Runs Llama 3.2 3B (Q4_K_M) in Ollama fully on the GPU at ~8K context.

GPU VRAM
8 GB
Est. draw
308 W
PSU headroom
111%
Compatibility: Incompatible
  • This model needs about 4 GB of VRAM under lean settings. The MSI GeForce RTX 4060 VENTUS 2X BLACK OC (8 GB) is the most affordable card that holds the whole model on the GPU.

  • Processor
    AMD Ryzen 5 7500F
    $0

    Local AI inference runs on the GPU, so a capable budget CPU like the AMD Ryzen 5 7500F keeps costs down without holding the model back.

  • Matches the CPU socket (AM5) and DDR5 memory; a solid value board with room to expand.

  • This model wants about 16 GB of system RAM; the 16 GB DDR5 kit covers it with headroom for the OS and offload.

  • Storage
    Crucial P3 Plus
    $62

    1 TB of NVMe — local model files are large (tens of GB each), and NVMe keeps load times short.

  • Keeps the CPU cool and quiet under sustained load; compatible with the chosen socket.

  • Power Supply
    MSI MAG A650BN
    $55

    Estimated system draw is about 308 W; the 650 W unit leaves headroom for GPU power spikes and efficiency.

  • Fits the motherboard form factor and has clearance for the graphics card (360 mm).

4 of 8 parts have live offers.

Recommended

Your pick

"The build we would buy."

$628 reference total

Runs Llama 3.2 3B (Q4_K_M) in Ollama fully on the GPU at ~8K context.

GPU VRAM
8 GB
Est. draw
308 W
PSU headroom
111%
Compatibility: Incompatible
  • This model needs about 4 GB of VRAM. The MSI GeForce RTX 4060 VENTUS 2X BLACK OC (8 GB) holds it with comfortable headroom for longer context and running other apps alongside it.

  • Processor
    AMD Ryzen 5 7500F
    $0

    The AMD Ryzen 5 7500F is a modern DDR5 platform — plenty for feeding the GPU, prompt processing, and everyday work, with an upgrade path.

  • Matches the CPU socket (AM5) and DDR5 memory; a solid value board with room to expand.

  • This model wants about 16 GB of system RAM; the 16 GB DDR5 kit covers it with headroom for the OS and offload.

  • Storage
    Samsung 990 Pro
    $170

    2 TB of NVMe — local model files are large (tens of GB each), and NVMe keeps load times short.

  • Keeps the CPU cool and quiet under sustained load; compatible with the chosen socket.

  • Power Supply
    MSI MAG A650BN
    $55

    Estimated system draw is about 308 W; the 650 W unit leaves headroom for GPU power spikes and efficiency.

  • Fits the motherboard form factor and has clearance for the graphics card (360 mm).

4 of 8 parts have live offers.

Max performance

"For users who value performance over budget."

$7,154 reference total

Runs Llama 3.2 3B (Q4_K_M) in Ollama fully on the GPU at ~8K context.

GPU VRAM
32 GB
Est. draw
983 W
PSU headroom
63%
Compatibility: Unknown
  • $2,000

    The most VRAM available here (32 GB) — maximum context and headroom, well above the ~4 GB this model needs.

  • $2,700

    The AMD Threadripper 3990X handles heavy multitasking, data prep, and CPU-side tokenization alongside a top GPU.

  • Matches the CPU socket (AM4) and DDR4 memory; a solid value board with room to expand.

  • This model wants about 16 GB of system RAM; the 16 GB DDR4 kit covers it with headroom for the OS and offload.

  • Storage
    Samsung 990 Pro
    $170

    2 TB of NVMe — local model files are large (tens of GB each), and NVMe keeps load times short.

  • Keeps the CPU cool and quiet under sustained load; compatible with the chosen socket.

  • $460

    Estimated system draw is about 983 W; the 1600 W unit leaves headroom for GPU power spikes and efficiency.

  • Fits the motherboard form factor and has clearance for the graphics card (435 mm).

5 of 8 parts have live offers.

Totals are the sum of current reference prices for each part, not live retailer pricing. Component choices are made purely on technical fit. We may earn a commission when you buy through links on this site. It never changes the price you pay, and it never affects which hardware we recommend. Learn more.