NETSPHERE

The hardware

Two watercooled hosts carry the estate; a Spark, a workstation and eight microphone satellites hang off it. Anything tagged measured was read off the running machine.

NT inference Thermaltake W200 · dual loop
Core
CPU
AMD Ryzen Threadripper PRO 9985WXmeasured 64 cores / 128 threads
Motherboard
ASUS Pro WS WRX90E-SAGE SE
Memory
96 GB DDR5-6400 — 768 GB total
Graphics
GPUs
NVIDIA RTX PRO 6000 Blackwell Workstation Editionmeasured 96 GB GDDR7 each — 384 GB of VRAM in one chassis
Storage
Boot
Micron 7450 Pro 480 GB NVMe
Model store
Kingston DC3000ME 7.68 TB U.2 NVMemeasured 9.3 GB/s sequential read, O_DIRECT
Array
Micron 7450 Pro 3.84 TB U.3 NVMe
Cooling — dual loop
Distribution
Singularity Computers Axiom Dual Loop Distribution Plate Two independent loops from one plate
Pump
Singularity Computers
Radiators
Alphacool 360 × 86 mm · 560 × 86 mm · 2× 560 × 60 mm
Blocks
Optimus — CPU and GPU
Network & power
NICs
NVIDIA ConnectX-6 2× 100 GbE direct-attached to EPYC, MTU 9000 — no switch between hostsmeasured
PSU
Corsair 3000 W
Case
Thermaltake W200
EPYC support & voice air cooled
Core
CPU
AMD EPYC 7763measured 64 cores / 128 threads
Motherboard
Gigabyte MZ32-AR0
Memory
16×64 GB DDR4-3200 — 1 TB total
Graphics
GPU 0
NVIDIA RTX PRO 4500 Blackwell Server Editionmeasured 32 GB — the fallback language model, so the assistant survives a mode switch on NT
GPU 1
NVIDIA GeForce RTX 3090measured 24 GB — speech recognition and synthesis for the satellites
Storage, network & power
Array
Micron 7450 Pro 3.84 TB U.3 NVMe
NICs
NVIDIA ConnectX-6 — 2× 100 GbE to NTmeasured
PSU
Seasonic Prime TX-1600 Noctua Edition
Fans
Noctua 120 mm (current generation)
The rest of the estate satellites
benchmark lane

NVIDIA DGX Spark

Chip
GB10, sm_121
Memory
121 GiB unified
CPU
20 cores, aarch64
Storage
3.7 TB NVMe
workstation

Desktop

CPU
Ryzen 9 9950X3D
Board
X670E AORUS XTREME
Memory
96 GB
GPU
RTX 5090, 32 GB
voice · 8 units

Satellites

Array
ReSpeaker XVF3800
MCU
Seeed XIAO ESP32S3
Wake
on-device, trained here
Link
Wi-Fi, half duplex