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Dev tools · April 8, 2026

OS Megakernel that match M5 Max Tok/w at 2x the Throughput on RTX 3090

Hey there, we fused all 24 layers of Qwen3.5-0.8B (a hybrid DeltaNet + Attention model) into a single CUDA kernel launch and made it open-source for everyone to try it. On an RTX 3090 power-limited to 220W: - 411 tok/s vs 229 tok/s on M5 Max (1.8x) - 1.87 tok/J, beating M5 Max efficiency - 1.55x faster decode than llama.cpp on the same GPU - 3.4x faster prefill The RTX 3090 launched in 2020. Everyone calls it power-hungry. It isn't, the software is. The conventional wisdom NVIDIA is fast but thirsty. Apple Silicon is slow but sips power. Pick a side. With stock frameworks, the…

OS Megakernel that match M5 Max Tok/w at 2x the Throughput on RTX 3090 launched on April 8, 2026 with 6 votes, #1,677 of 21,248 launches that month and more than 75% of that year's launches.

Visit github.com ↗Alternativestop 8% of April 2026

What it does

LLM speculative inference server for heterogeneous hardware & consumer GPUs - Luce-Org/lucebox

In the maker’s words, at launch

Hey there, we fused all 24 layers of Qwen3.5-0.8B (a hybrid DeltaNet + Attention model) into a single CUDA kernel launch and made it open-source for everyone to try it. On an RTX 3090 power-limited to 220W: - 411 tok/s vs 229 tok/s on M5 Max (1.8x) - 1.87 tok/J, beating M5 Max efficiency - 1.55x faster…

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