Four RTX 5090s, 9.62 seconds p99: ZisK says it can meet Ethereum’s real-time proving target with one-third the GPU count flagged in February. The catch: the block set, proof size and full-system power are still undisclosed, so the result is not yet comparable. https://cryptoslate.com/ethereums-12-gpu-proving-problem-just-got-a-4-gpu-answer/(CryptoSlate)