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Power consumption calculator

Add your equipment. See the estimated energy for colocation.

Your equipment

Storage — quantity / device

You can combine drive types. Enter the number of each type; leave unused types at 0.

PSU ratings describe available capacity, not constant consumption. A/B assumes identical supplies shared equally.

Technical values use indicative defaults. Adjust them only if needed.

Optional details components and advanced settings

Quick RAM choices assume 32 GB modules (one 16 GB module for the 16 GB option). You can adjust the modules below.

Processors and memory

TDP is not measured power. The CPU model is nonlinear. Without a known peak, we use 1.25 × TDP as an indicative assumption, not a guaranteed limit.

Chassis, cooling and expansion

All component values are DC. Base power excludes CPU, RAM, drives, fans, controllers and separately entered modules. Add-in power is per card. PSU efficiency is a constant approximation.

Default: low confidence. Confirming the inventory allows medium confidence; high confidence requires rapid-mode measurements.

How heavily are they used?
Applies to the whole configuration
Adjust schedule or energy tariff
Schedule for the whole configuration

Default: continuous operation, 24 hours/day × 30 days/month = 720 hours. Adjust the days for the month under review. Headroom applies only to planning power.

Idle / normal / high load: 20% / 65% / 15%

Optional indicative cost

Enter your own tariff. This is not a NetProtect commercial price. PUE, cooling, infrastructure, taxes and VAT are not automatically included.

    See the detailed calculation

    These values are indicative estimates. Actual consumption can vary with configuration, load, temperature, power supply efficiency and operating conditions. Final consumption can be established through measurement in the Data Center.

    How is energy calculated?
    HOW WE CALCULATE

    Power. Energy. Capacity.

    24/7 server power calculator

    A rack server does not constantly draw the power printed on its PSU. The estimate adds motherboard, CPU, RAM, drives, GPU, cooling and expansion cards, then includes PSU losses. NAS and storage drives and controllers are modelled separately.

    W ≠ kWh

    W measures power at a point in time. kWh measures energy over time. An average of 200 W for 24 hours/day and 30 days is 144 kWh. The component average combines idle, normal and high-load power according to the selected profile.

    Redundant A/B supplies

    Normal operation assumes equal sharing between A and B. If one circuit fails, the remaining circuit must support the full load. Planning headroom is not automatically billed and does not increase estimated energy.

    Model, coefficients and technical sources

    Coefficients are generic engineering assumptions, not measurements of your equipment. Sources explain principles and provide examples; they do not universally validate every value. RAM, fans, cards, SSDs and usage profiles vary substantially. Replace editable values with known specifications.

    Normal CPU = TDP × [0.12 + 0.88 × utilisation^0.65]. RAM = modules × DDR coefficient × (GB/16)^0.55. AC = DC / efficiency. PoE = endpoint power / PoE efficiency, included once in DC.

    DC coefficients (idle / normal / high / estimated peak), W per unit:

    • 2.5″ HDD: 2.5 / 4 / 5.5 / 8
    • 3.5″ HDD: 5.5 / 7 / 10 / 25
    • 2.5″ SSD (SATA): 0.8 / 2 / 4 / 6
    • NVMe SSD: 3 / 8 / 15 / 25

    16 GB RAM: DDR3 4 W, DDR4 3 W, DDR5 4.5 W, scaled by capacity; states 65 / 80 / 95 / 100%. Fans: 20 / 40 / 75 / 100% of entered power. GPU: 8 / 50 / 90 / 100%. Cards and controllers: 60 / 80 / 95 / 100%. Ports: 25 / 50 / 80 / 100%. Chassis, optics and additional load are constant.

    We do not model sub-second transients, AC inrush, protection trips, phase imbalance or the actual efficiency curve. This calculation does not recommend breaker ratings.

    Model: 2026.10-v1