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physical-specs Physical Specifications established Web research: Dell product page, WCCFTech, NVIDIA DGX Spark User Guide, Jeff Geerling, ServeTheHome [connectivity gb10-superchip skus-and-pricing] [volume-calculation] [form-factor micro-desktop usb-c-psu tdp] [] [] [VESA mount compatibility Exact heatsink dimensions and material]

Physical Specifications

The Dell Pro Max GB10 is an ultra-compact mini desktop designed to sit on or near a desk.

1. Dimensions and Weight

Spec Dell Pro Max GB10 DGX Spark (reference)
Width 150 mm (5.9 in) 150 mm
Depth 150 mm (5.9 in) 150 mm
Height (peak) 51 mm (2.0 in) 50.5 mm
Height (front/rear) 45.5 mm (1.8 in)
Volume ~1.15 liters ~1.14 liters
Weight (min) 1.22 kg (2.69 lbs) 1.2 kg (2.6 lbs)
Weight (max) 1.34 kg (2.96 lbs)

Regulatory model: D21U / D21U001 (Dell)

For reference, the footprint is roughly the size of a large coaster or small book.

2. Power Supply

Parameter Dell Pro Max GB10 DGX Spark
PSU wattage 280W 240W
Connection USB-C PD USB-C PD
GPU TDP 140W 140W

The Dell PSU is 40W higher than the reference DGX Spark, providing extra headroom for QSFP optics and peripherals.

Dell 280W Power Adapter Details (T0 Spec, Dell Owner's Manual)

Parameter Value
Dimensions 23 x 78 x 162 mm (0.91 x 3.07 x 6.38 in)
Input voltage 100-240 VAC (also 200-240 VAC)
Input frequency 50-60 Hz
Input current (max) 2A / 4A
Output voltages 48V, 36V, 28V, 20V, 15V, 9V, 5V
Max output 48V/5.83A, 36V/5.83A, 28V/5.89A, 20V/6.50A

Power Button

Located on the rear panel. Press to turn on. Press and hold 4 seconds to force shut down. (T0 Spec, Dell Owner's Manual)

Power Draw by Workload (T2 Benchmarked)

State Power Draw Source
Idle ~30W Jeff Geerling
AI inference (LLM) 60-90W ServeTheHome
CPU-only load 120-140W Jeff Geerling / STH
CPU + GPU load ~200W ServeTheHome

3. Cooling

  • Design: Dual-fan setup with dense heatsink (T2, reviews)
  • Airflow: Front-to-back (Dell design is less restricted than DGX Spark)
  • Noise: Never exceeded 40 dB at 1-1.5m during non-stress testing (T2, ServeTheHome)
  • Dell advantage: Quieter than reference DGX Spark design; capable of keeping GB10 from thermal throttling (T2, Jeff Geerling)
  • Front panel: Hard foam-like material allowing airflow intake
  • Bottom panel: Large vent with rubber pad for desk stability; magnetically attached, reveals Wi-Fi antenna and system information underneath

4. Environmental Specifications

Dell and NVIDIA specs differ slightly. Dell's are from the Owner's Manual (T0 Spec); NVIDIA's from the DGX Spark User Guide.

Parameter Dell Pro Max (T0) DGX Spark (T0)
Operating temperature 0°C to 35°C (32°F to 95°F) 5°C to 30°C (41°F to 86°F)
Storage temperature -40°C to 65°C (-40°F to 149°F)
Operating humidity 10% to 90% (non-condensing) 10% to 90% (non-condensing)
Storage humidity 0% to 95% (non-condensing)
Operating altitude -15.2 m to 3,048 m (-50 to 10,000 ft) Up to 3,000 m (9,843 ft)
Storage altitude -15.2 m to 10,668 m (-50 to 35,000 ft)
Operating vibration 0.66 GRMS
Storage vibration 1.30 GRMS
Operating shock 110 G (2ms half-sine)
Storage shock 160 G (2ms half-sine)
Airborne contaminants G1 per ISA-S71.04-1985

Note: Dell's operating temp range (0-35°C) is wider than NVIDIA's (5-30°C). The Dell spec may reflect the Dell chassis thermal design improvements.

Power Adapter Environmental

Parameter Value
Operating temperature 0°C to 35°C (32°F to 95°F)
Storage temperature -40°C to 70°C (-40°F to 158°F)

5. Form Factor

  • Classification: Micro desktop / Mini PC / SFF (Small Form Factor)
  • Design: Stackable (for multi-unit-stacking)
  • Chassis: Compact rectangular enclosure (gold-colored metal on DGX Spark)
  • Portability: Fits in carry-on luggage or backpack (T2, ServeTheHome)

6. Scale Comparison

Compared to... Dell Pro Max GB10
Mac Mini M4 Pro Similar footprint, thinner
NVIDIA DGX Spark Same SoC, lighter, smaller PSU
Traditional desktop ~20x smaller by volume
Laptop Comparable weight

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