> ## Documentation Index > Fetch the complete documentation index at: https://docs.gamerhash.com/llms.txt > Use this file to discover all available pages before exploring further. # GPU contributors > How to think about GPU contribution as a primary use case — beyond casual gaming. Gamers contribute incidentally. **GPU contributors run hardware specifically to participate in the network**: dedicated workstations, multi-GPU rigs, or repurposed mining setups. Different goals, different optimisation. ## Who this is for * Former PoW miners who own RTX hardware and want to redeploy it for AI yield. * Power users with 24+ GB VRAM cards, prosumer workstations, or ML rigs that sit idle outside business hours. * Small operators with 2–10 GPUs looking for stable side income. ## Why GPU contribution beats PoW mining * **Pay scales with demand**, not with hash difficulty. As API and platform usage grow, contributor pay grows. PoW pay falls as more miners join. * **No algorithm tuning**, no protocol forks to chase, no electricity arbitrage games. The AI App handles dispatch. * **GUSD pays per workload completed** — predictable, internal, no exposure to coin-price volatility while you wait to convert. * **GHXP rewards consistency**, not raw hash rate. Long-running, GHX-holding accounts compound their share. ## Optimisation playbook **Maximize uptime.** Most pay comes from being online when a workload arrives. Configure auto-start, disable sleep, monitor stability. **Pick the right cards.** 24 GB+ VRAM unlocks the highest-paying tiers (large LLMs, video gen). RTX 4090 / 5090 / Blackwell pro cards are the sweet spot for new investment. **Hold GHX for the boost.** The GHXP boost is the cheapest yield multiplier in the system — it's free, it stacks, and you don't lock the GHX. Hold it in MetaMask or in your in-app GHX wallet, run the app, get more GHX per workload. **Stake your GHX.** Don't let GHX you're holding for the boost sit idle. Put it on [staking.gamercoin.com](https://staking.gamercoin.com) — up to **25% APR** on Ethereum, BNB Chain, or Solana. Staked GHX still counts for the boost (verify in the dashboard). **Run multiple machines on one account.** GHXP and earnings consolidate per account, not per machine. Faster GHXP level progression. ## The numbers conversation There's no fixed APR on the earning side. Per-machine yield depends on demand, GPU class, and GHXP level. The honest framing: * A modern RTX 4070 with 12 GB will earn modestly when network demand is moderate. * A 4090 with high uptime and level will earn meaningfully more. * All of it scales with platform API and partnership volume — which is the variable you're betting on. The platform publishes monthly community updates on [Medium](https://medium.com/we-are-the-gamerhash) with workload volume signals. That's the right place to read the room before scaling up. ## What to watch out for * **Electricity cost.** Shared with PoW logic — at peak rates this matters. Schedule earning during off-peak hours if your tariff is time-of-use. * **Driver stability.** Long-running inference exposes driver bugs. Stick to NVIDIA Studio drivers; report crashes to the support channel. * **Heat / hardware longevity.** AI inference is GPU-intensive. Good airflow matters. Undervolting is supported and recommended for 24/7 operation. ## Related Mechanics of GUSD, GHXP, levels, and payouts. Pair contribution with token yield.