See How Decibe Works
This is a real example of a completed Decibe decision. A user asked: “Which GPU should I buy for my Ubuntu workstation — RTX 4090, RX 7900 XTX, or Arc A770? Budget is $1,500, mainly for Ollama and ComfyUI.”
Go with the RTX 4090
Based on your priorities, the RTX 4090 is the strongest match. You consistently favored raw performance and future-proofing over cost savings, and your fast response times on VRAM and CUDA questions show strong conviction. While the RX 7900 XTX offers better price-to-performance, your use case — running large Ollama models and ComfyUI workflows — benefits directly from the 4090's 24GB VRAM and superior CUDA ecosystem support.
Decision Path
Next Steps
- 1Check current pricing — the RTX 4090 fluctuates between $1,499 and $1,799 depending on the model and retailer.
- 2Verify your PSU has at least 850W with a 12VHPWR connector (or use the included adapter).
- 3Measure your case clearance — the 4090 is a triple-slot card, typically 336mm+ in length.
- 4Consider the ASUS TUF or MSI Suprim X variants for better thermals and noise at similar prices.
Want a better decision? Consider these
Would you consider a used or refurbished 4090 to save $200–400?
How important is noise level — would you trade 5% performance for a near-silent card?
Are you planning to run models larger than 70B parameters in the next 12 months?
Each bit represents one binary trade-off answer. This compact pattern encodes the user's full preference profile for this decision.
The 6 Questions Asked
When it comes to GPU selection, which matters more?
Response time: 1.4s — strong conviction
For your ML workloads, what's more important?
Response time: 1.2s — strong conviction
How do you feel about software ecosystem?
Response time: 1.8s — strong conviction
How do you approach tech purchases?
Response time: 2.1s — moderate certainty
How do you weigh power consumption?
Response time: 4.7s — genuine deliberation
Your $1,500 budget — how firm is it?
Response time: 2.3s — moderate certainty
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How to read this result
Every Decibe decision follows the same structure. You describe what you're deciding, and our AI generates a tailored set of binary trade-off questions. Each question forces a choice between two competing priorities — there are no “both” or “neither” options, because genuine trade-offs reveal genuine preferences.
The confidence score reflects how consistent and decisive your answers were. Higher confidence means your preferences pointed clearly in one direction. Lower confidence suggests genuine ambivalence — which is itself useful information.
The decision fingerprint is a binary encoding of your answers: each bit is one question, 0 or 1. Two people with the same fingerprint on the same decision would get the same recommendation. The fingerprint also enables anonymous pattern matching — over time, Decibe learns which question sequences produce the most decisive results.
Response timeis measured for every answer. Research in preference learning shows that faster responses correlate with stronger conviction. Decibe factors this into the recommendation — a quick, confident “A” carries more weight than a slow, uncertain one.
Ready to make a decision? Try Decibe now — it takes about 60 seconds.