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Buying decision · lowest current full-VRAM price

Cheapest GPU for Mixtral 8x7B Instruct
Q4 · 8K (default)

Ranked by lowest fresh Amazon-matched board-partner SKU price among GPUs that fully fit this exact workload. This is not a speed ranking and not a “best GPU” list. Query combinations are not indexed.

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Requirement

Model
Mixtral 8x7B Instruct
Quantization · context
Q4 · 8K
Required VRAM
31.3 GB
Calculator
v1.0.0

3 canonical GPUs fully fit. 1 of them have a fresh current price. 2 compatible GPUs have no current price.

Formula: MIN(live fresh Amazon-matched board-partner SKU price) WHERE compatibility = FITS_IN_VRAM. Sort: price ASC, advertised VRAM ASC, canonical GPU id ASC. Prices are the lowest fresh Amazon-matched board-partner SKU, not MSRP or a street-price average.

Among 1 canonical GPUs with a fresh matched Amazon offer currently available in RigForAI. Ranked 1. Unpriced compatible: 2. This is not the entire US market — only canonical GPUs with a fresh matched Amazon offer currently in RigForAI.

Cheapest currently available full-VRAM GPU

#1 of 1 currently priced full-fit GPUs

NVIDIA RTX 6000 48 GB

Advertised VRAM
48 GB
Usable VRAM
43.2 GB
Headroom
11.9 GB
Compatibility
FITS_IN_VRAM
Current fresh Amazon price
$20888.00
Winning physical SKU
HP NVIDIA RTX 6000 Ada 48 GB 4DP Graphics
HP
ASIN B0CTP2HHBN
Offer fetched
2026-08-14 20:19 UTC

Check price on Amazon

Why it ranks first

  • FITS_IN_VRAM for this model, quantization, and context
  • current fresh matched Amazon offer (EXACT/HIGH, not a bundle)
  • lowest price among 1 eligible priced GPUs
  • price ASC, advertised VRAM ASC, canonical GPU id ASC.

Build a complete PC around this option. GPU-only price is not a complete-build cost.

Compatible — current price unavailable

These GPUs calculate as a full VRAM fit. They are not inserted into the current-price ranking because RigForAI has no fresh matched Amazon offer for them. That is not the same as too expensive or incompatible.

Supported llama.cpp decode per current $1,000

Not ranked here: comparable published MEDIUM-or-higher-confidence llama.cpp decode predictions with a fresh price are unavailable for this workload. Raw Phase 5 estimates may still appear on GPU and comparison pages.

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