Your recommended build
Sized to run Qwen3.5-397B as cheaply as honestly possible — exactly enough memory, nothing wasted.
The memory math, shown:
397B params × 1 GB = 397 GB
+ 20% working roomiExtra memory on top of the raw model weights, reserved for what a model needs while actually generating text — things like the KV cache and activation buffers. Real deployments almost never fit with zero headroom.
= 476.4 GB required
1x 8x H100 SXM server
Built on the SXMiA physical GPU form factor used in datacenter servers, built for maximum power and NVLink bandwidth — different from the PCIe card format used in desktops and workstations. GPU form factor.
Combined memory
640 GB
Combined price
$250,000
Combined power
5,600 W
Power, in real terms: about 4.7x
an average home's continuous draw. Run flat-out for a day, it would use about
134 kWh — roughly
1.5x the capacity of an electric car
battery, every 24 hours.