The Calculator 
## What DeepSeek V4.1 Flash actually costs to run **A million tokens of context costs 0.87 GiB.** That is the whole story, and it is the first time we have run these numbers and found the context column boring. DeepSeek publishes the figure directly in the model card: the global KV cache is **890 bytes … Read more
Can your GPU run Qwopus 3.8 27B Flash? An RTX 5080 runs Qwopus 3.8 27B Flash only by giving up quality. Q4_K_M, the rung most people download, wants 17.1 GiB at 4K and 18.9 GiB at 32K against the 15.2 GiB a 16 GB card hands a process, so it misses at every context length … Read more
Can You Run Qwen 3.8 Flash Next NVFP4 on One Machine? Yes, on a single DGX Spark, and the reason is the most useful thing on this page: you never load two fifths of it. NVIDIA’s own build is 132.68 GB of weights, which is 123.57 GiB. A Spark has a 128 GB unified pool … Read more
What Does Mixed Precision Quantization Do to the Gigabytes? It moves the big tolerant part of the model down to 4 bits and leaves the small fragile part alone, and on a Mixture of Experts model that is most of the weight for almost none of the damage. GLM-5.3-Flash goes from 328 GB as Z.ai … Read more
Which GGUF Quant Should You Download? Take the largest four-bit build that leaves room for your context. On Qwen 3.8 27B that is roughly 14 to 19 GB to download depending on who built it, and every campaign that measured a real task this month agrees it performs like the full-precision model. Below that the … Read more
How Much VRAM Does GLM 5.3 Need? The short answer, now that the weights are public: 254 GB at 2-bit, 467 GB at 4-bit, and 1.51 TB if you want the model as the lab trained it. Z.ai released GLM 5.3 on August 28, 2026 at 14:48 UTC, two weeks after the API launch, and … Read more
Two numbers sit on this page and they are not the same kind of number. The estimator gives you a bandwidth ceiling for one card and one model, derived from arithmetic you can check. The table under it holds measured LLM tokens per second figures other people published on real hardware, each one attributed to … Read more
GLM 5.3 Flash VRAM Requirements: The Short Answer Running Z.ai’s newest frontier MoE takes 186 GiB at Q4_K_M, 129 GiB at Q3_K_M, and still 101 GiB at the bottom of the quant ladder. No gaming card on the market holds any of those numbers. The only measured runs published so far are on DGX Sparks, … Read more
Qwen3.8 Flash Next VRAM: 180B Total, 6B Active Qwen shipped the architecture that Qwen4 will be built on, and it breaks the way you are used to sizing a model. The card says: 125B parameters with 6B activated, plus 51B of n-gram embedding and 4B of MTP. That adds to 180B, and Hugging Face's own … Read more
M5 Ultra Mac Studio: What 512 GB at 1.2 TB/s Runs Apple announced the M5 Ultra Mac Studio and the M6 Mac mini today, with pre-orders open now and machines arriving 22 September. For local models the number that matters is not the 512 GB. It is the 1.2 TB/s. Here is why, and it … Read more
