---
title: fInstalledRAMSize
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [driverkit 22.0+, Mac Catalyst 13.0+, macOS 10.15+]
path: iokit/scsicmd_inquiry_pagec0_data/3113967-finstalledramsize
---

# fInstalledRAMSize

## Declaration

```occ
UInt64 fInstalledRAMSize;
```