Most transcription APIs charge by the minute. At seven pence per audio hour, self-hosting Whisper Large-v3 on the cheapest GPU in the rack changes that equation entirely. We benchmarked OpenAI’s 1.5-billion-parameter speech model on the RTX 3050 via GigaGPU to find out where the performance floor sits.
Transcription Speed
| Metric | Value |
|---|---|
| Real-Time Factor (lower = faster) | 0.28 |
| Processing speed | 3.6x real-time |
| Audio hours processed per GPU-hour | 3.6 |
| Precision | FP16 |
| Performance rating | Good |
Benchmark conditions: FP16 inference, single-stream processing, 16kHz input audio, English language. faster-whisper backend with CTranslate2 optimisation.
VRAM on a Tight Budget
| Component | VRAM |
|---|---|
| Model weights (FP16) | 3.1 GB |
| Audio buffer + runtime | ~0.5 GB |
| Total RTX 3050 VRAM | 6 GB |
| Free headroom | ~2.9 GB |
Whisper Large-v3’s 3.1 GB model fits on the 3050 with room to spare for a single concurrent stream. The 2.9 GB headroom is not enough for multi-stream processing or co-hosting a second model, but for dedicated transcription duties the 3050 handles it cleanly.
Transcription Economics
| Cost Metric | Value |
|---|---|
| Server cost | £0.25/hr (£49/mo) |
| Cost per audio hour | £0.070 |
| Audio hours per £1 | 14.3 |
Seven pence per hour of transcribed audio. Compare that to commercial APIs charging £0.30-0.90 per audio hour. Even at modest 3.6x real-time speed, the RTX 3050 pays for itself within the first month of regular use. See all GPU benchmarks for faster options.
When the 3050 Makes Sense for Whisper
Podcast transcription backlogs. Meeting notes for small teams. Internal documentation from recorded calls. Anything where latency tolerance is measured in minutes rather than seconds, the 3050 at £49/mo delivers. For real-time or near-real-time needs, step up to the RTX 4060 at 6.2x speed. Full comparison in our best GPU for Whisper guide.
Quick deploy:
docker run --gpus all -p 9000:9000 ghcr.io/fedirz/faster-whisper-server:latestRelated: Whisper hosting guide, all benchmarks, Stable Diffusion hosting.
Deploy Whisper Large-v3 on RTX 3050
Order this exact configuration. UK datacenter, full root access.
Order RTX 3050 Server
