750-ACFR: Dell PowerEdge R650 Very High Performance Fan Module
Also listed as: 08M90P, 8M90P · made by Delta Electronics
The Dell 750-ACFR is a Dell PowerEdge R650 Very High Performance Fan Module delivering targeted cooling airflow and thermal stability for Dell PowerEdge R650, R650XS servers.
Specifications
| Part number | 750-ACFR |
|---|---|
| Brand | Dell |
| Made by | Delta Electronics |
| Type | Fans |
| Other numbers | 08M90P, 8M90P |
| Status | current |
| Form factor | Hot-Plug 40mm Dual-Rotor Very High Performance Fan Module |
| Speed | Up to 23,000 RPM |
| Generation fit | 15th Generation PowerEdge (R650 / R650xs) |
About the 750-ACFR
The Dell 750-ACFR is a Dell PowerEdge R650 Very High Performance Fan Module engineered to deliver high-velocity cooling airflow across internal server components. Featuring a dual-rotor counter-rotating motor design, the 750-ACFR provides static pressure to cool high-wattage processors, memory banks, and expansion cards in high-density Dell PowerEdge chassis. The 750-ACFR maintains safe operating temperatures under continuous datacenter computing loads.
Compatibility
Designed specifically for Dell PowerEdge R650, R650XS servers, the 750-ACFR installs into the central hot-plug fan bay. The 750-ACFR integrates with chassis fan brackets and connects through blind-mate power pins for tool-less replacement during server operation.
How to identify a genuine unit
Genuine Dell 750-ACFR fans display a factory label showing DP/N 08M90P, Delta or NMB manufacturer markings, and operating voltage/amperage specifications. In iDRAC Fans inventory, the 750-ACFR fan reports real-time RPM speed and operational health status, allowing predictive maintenance alerts.
Buying used
When evaluating a pre-owned 750-ACFR, spin both fan rotors manually to ensure bearings rotate smoothly without grinding, resistance, or wobbling. Check the plastic housing and blind-mate connector pins on the 750-ACFR for physical damage. Confirm in iDRAC that the 750-ACFR modulates PWM speed normally under thermal stress.
Fits these models
Check compatibility with Dell
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell 750-ACFR.
- Compatibility Dell E-Lab Navigator (storage and SAN interoperability) (free vendor sign-in)
- Support Dell Support: drivers, manuals and service tag lookup
Equivalent part numbers
- Dell 8M90P Dell direct spare part number for R650 VHP Fan
FAQ
Can R640 fans be used in an R650?
No, R650 fan modules use a modified mechanical form factor and updated connector pinout.
What triggers maximum fan speed in an R650?
Opening the chassis top cover, PCIe card thermal alerts, or high ambient inlet temperatures will cause iDRAC to ramp fans to 100% duty cycle.
Buying or selling 750-ACFR?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell PowerEdge R650 Cooling Fan Specifications, checked 2026-10-27