Browse through MacBook Air and MacBook Pro laptop variations and take your pick based on your requirements. Available in 5th generation and 7th generation variations, Apple laptops are here to impress and stay. The information you are reading has been last updated on 11-Sep-20. Choose the right Microsoft 365 for your Mac Microsoft 365 makes your life more creative, organized, and secure. With Microsoft 365, you’ll always have the latest AI-powered Office apps, 1 TB of cloud storage, and premium mobile features to stay on top of things wherever you are on any device. Aug 05, 2020.
- Press the power button on your Mac. Every Mac has a power button, usually marked with a power symbol . Then check for signs of power such as these:
- Sounds, such as from a fan, hard disk, or other startup sound
- Lights, such as from a backlit keyboard, Caps Lock key, or sleep indicator light
- If your Mac has no signs of power, start by making sure that it's receiving power:
- Make sure that your power cable is undamaged and securely plugged into your Mac and a working electrical outlet. If you're not sure about the outlet, test it with a lamp or other device.
- If you're using a Mac notebook, make sure that it's using the correct power cable and adapter, and that it has been plugged in for about 5 minutes, which is long enough to provide a usable battery charge. Learn how to troubleshoot USB-C power adapters or MagSafe power adapters.
- If you're using an external display, make sure that it's turned on, securely connected to your Mac, and isn't experiencing any video or display issues.
- Then try these solutions, whether or not your Mac has signs of power:
- Press and hold the power button on your Mac for 10 seconds, then press it again.
- Reset the System Management Controller (SMC).
- Make sure that your display's brightness is turned up. Mac notebook computers have a Brightness Up key on the built-in keyboard.
- Unplug all accessories from your Mac, including printers, drives, USB hubs, and mobile devices. (You could have an issue with one or more of those devices or their cables.) Once more, press and hold the power button for 10 seconds, then press it again.
- If your Mac has signs of power but the screen remains blank, try the steps for when your Mac starts up to a blank screen.
If you still need help, please contact Apple Support.
| iMac (Retina 5K, 27-inch, 2020) | |||
|---|---|---|---|
| 27-inch Retina 5K display, 3.6GHz 10-Core i9, 128GB 2666MHz DDR4 SDRAM, 8TB Solid State Drive, AMD Radeon Pro 5700 XT with 16GB memory | |||
| Power Consumption | Thermal Output | ||
| Idle | CPU Max | Idle | CPU Max |
| 74W | 295W | 252 BTU/h | 1007 BTU/h |
iMac (Retina 5K, 27-inch, 2019) | |||
|---|---|---|---|
27-inch Retina 5K display, 3.6GHz Intel 8-Core i9, 64GB 2666MHz DDR4 SDRAM, 3TB Fusion Drive, AMD Radeon Pro Vega 48 with 8GB memory | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
71W | 262W | 242 BTU/h | 895 BTU/h |
iMac (Retina 4K, 21.5-inch, 2019) | |||
|---|---|---|---|
21.5-inch Retina 4K display, 3.2GHz Intel 6-Core i7, 32GB 2666MHz DDR4 SDRAM, 1TB Solid State Drive, AMD Radeon Pro Vega 20 with 4GB memory | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
47W | 166W | 161 BTU/h | 568 BTU/h |
iMac (Retina 5K, 27-inch, 2017) | |||
|---|---|---|---|
27-inch Retina 5K display, 4.2GHz Intel Quad-Core i7, 64GB 2400MHz DDR4 SDRAM, 3TB Fusion Drive, AMD Radeon Pro 580 with 8192MB memory | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
71W | 217W | 242 BTU/h | 741 BTU/h |
iMac (Retina 4K, 21.5-inch, 2017) | |||
|---|---|---|---|
21.5-inch Retina 4K display, 3.6GHz Intel Quad-Core i7, 32GB 2400MHz DDR4 SDRAM, 512GB Solid State Drive, AMD Radeon Pro 560 with 4096MB memory | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
49W | 161W | 168 BTU/h | 550 BTU/h |
iMac (21.5-inch, 2017) | |||
|---|---|---|---|
21.5-inch display, 2.3GHz Intel Dual-Core i5, 16GB 2400MHz DDR4 SDRAM, 256GB Solid State Drive | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
33W | 74W | 113 BTU/h | 253 BTU/h |
iMac (Retina 5K, 27-inch, Late 2015) | |||
|---|---|---|---|
27-inch Retina 5K display, 4.0GHz Intel quad-core Core i7, 32GB 1866MHz DDR3L SDRAM, 3TB Fusion Drive, AMD Radeon R9 M390 with 2GB memory | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
63W | 240W | 215 BTU/h | 819 BTU/h |
iMac (Retina 4K, 21.5-inch, Late 2015) | |||
|---|---|---|---|
21.5-inch Retina 4K display, 3.3GHz Intel quad-core Core i7, 16GB 1866MHz LPDDR3 SDRAM, 2TB Fusion Drive | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
40W | 119W | 136 BTU/h | 406 BTU/h |
iMac (21.5-inch, Late 2015) | |||
|---|---|---|---|
21.5-inch display, 1.6GHz Intel dual-core Core i5, 16GB 1866MHz LPDDR3 SDRAM, 1TB Fusion Drive | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
33W | 58W | 113 BTU/h | 198 BTU/h |
iMac (Retina 5K, 27-inch, Mid 2015) | |||
|---|---|---|---|
27-inch display, 3.3GHz Intel Core i5, 32GB 1600MHz DDR3 SDRAM, 3TB Fusion Drive, AMD Radeon R9 M290 | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
70W | 197W | 239 BTU/h | 673 BTU/h |
iMac (27-inch, Late 2014) | |||
|---|---|---|---|
27-inch display, 4GHz Intel Core i7, 32GB 1600MHz DDR3 SDRAM, 3TB Fusion Drive, AMD Radeon R9 M295X with 4096MB memory | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
70W | 288W | 239 BTU/h | 983 BTU/h |
iMac (21.5-inch, Mid 2014) | |||
|---|---|---|---|
21.5-inch display, 1.4GHz Intel Core i5, 8GB 1600MHz DDR3 SDRAM, 500GB HDD, integrated graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
33W | 68W | 113 BTU/h | 232 BTU/h |
iMac (Late 2013) | |||
|---|---|---|---|
iMac (21.5-inch, Late 2013) | |||
21.5-inch display, 3.1GHz Intel Core i7, 16GB 1600MHz DDR3 SDRAM, 1TB Fusion Drive, NVIDIA GeForce GT 755M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
37W | 136W | 126 BTU/h | 463 BTU/h |
iMac (21.5-inch, Late 2013) | |||
|---|---|---|---|
21.5-inch display, 2.9GHz Intel Core i5, 8GB 1600MHz DDR3 SDRAM, 1TB Serial ATA Hard Drive, NVIDIA GeForce GT 750M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
37W | 94W | 127 BTU/h | 322 BTU/h |
iMac (21.5-inch, Late 2013) | |||
|---|---|---|---|
21.5-inch display, 2.7GHz Intel Core i5, 8GB 1600MHz DDR3 SDRAM, 1TB Serial ATA Hard Drive, Intel Iris Pro Graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
38W | 91W | 129 BTU/h | 311 BTU/h |
iMac (27-inch, Late 2013) | |||
|---|---|---|---|
27-inch display, 3.4GHz Intel Core i7, 32GB 1600MHz DDR3 SDRAM, 3TB Fusion Drive, NVIDIA GeForce GTX 775M | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
78W | 229W | 266 BTU/h | 782 BTU/h |
iMac (27-inch, Late 2013) | |||
|---|---|---|---|
27-inch display, 3.4GHz Intel Core i5, 8GB 1600MHz DDR3 SDRAM, 1TB Serial ATA Hard Drive, NVIDIA GeForce GTX 775M | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
80W | 214W | 274 BTU/h | 729 BTU/h |
iMac (27-inch, Late 2013) | |||
|---|---|---|---|
27-inch display, 3.2GHz Intel Core i5, 8GB 1600MHz DDR3 SDRAM, 1TB Serial ATA Hard Drive, NVIDIA GeForce GT 755M | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
78W | 180W | 268 BTU/h | 615 BTU/h |
iMac (21.5-inch, Late 2011) | |||
|---|---|---|---|
21.5-inch display, 3.1GHz Intel Core i3, 2GB 1333MHz DDR3 SDRAM - 2x2GB, 250GB Serial ATA hard drive, AMD Radeon HD 6750M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
80W | 101W | 273 BTU/h | 345 BTU/h |
iMac (21.5-inch, Mid 2011) | |||
|---|---|---|---|
21.5-inch display, 2.5GHz Intel Core i5, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 500GB Serial ATA hard drive, AMD Radeon HD 6750M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
81W | 106W | 276 BTU/h | 362 BTU/h |
iMac (21.5-inch, Mid 2011) | |||
|---|---|---|---|
21.5-inch display, 2.7GHz Intel Core i5, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, AMD Radeon HD 6770M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
85W | 114W | 290 BTU/h | 389 BTU/h |
iMac (27-inch, Mid 2011) | |||
|---|---|---|---|
27-inch display, 2.7GHz Intel Core i5, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, AMD Radeon HD 6770M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
135W | 170W | 461 BTU/h | 580 BTU/h |
iMac (27-inch, Mid 2011) | |||
|---|---|---|---|
27-inch display, 3.1GHz Intel Core i5, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, AMD Radeon HD 6970M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
139W | 195W | 474 BTU/h | 665 BTU/h |
iMac (27-inch, Mid 2011) | |||
|---|---|---|---|
27-inch display, 3.4GHz Intel Core i7, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, AMD Radeon HD 6970M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
142W | 200W | 485 BTU/h | 682 BTU/h |
iMac (Mid 2010) | |||
|---|---|---|---|
21.5-inch display, 3.6GHz Intel Core i5, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon 4670 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
94W | 241W | 321 BTU/h | 822 BTU/h |
iMac (27-inch, Mid 2010) | |||
|---|---|---|---|
27-inch display, 3.2GHz Intel Core i3, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon 5670 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
* | 365W | * | 1,245 BTU/h |
iMac (27-inch, Mid 2010) | |||
|---|---|---|---|
27-inch display, 3.6GHz Intel Core i5, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon 5670 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
145W | 365W | 495 BTU/h | 1,245 BTU/h |
iMac (21.5-inch, Late 2009) | |||
|---|---|---|---|
21.5-inch display, 3.33GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 500GB Serial ATA hard drive, NVIDIA GeForce 9400M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
104W | 241W | 355 BTU/h | 822 BTU/h |
iMac (21.5-inch, Late 2009) | |||
|---|---|---|---|
21.5-inch display, 3.2GHz Intel Core i3, 4GB 1333MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, NVIDIA GeForce 9400M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
104W | 241W | 355 BTU/h | 822 BTU/h |
iMac (27-inch, Late 2009) | |||
|---|---|---|---|
27-inch display, 3.06GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon 4670 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
* | 365W | * | 1,245 BTU/h |
iMac (27-inch, Late 2009) | |||
|---|---|---|---|
27-inch display, 3.33GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon 4670 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
* | 365W | * | 1,245 BTU/h |
iMac (27-inch, Late 2009) | |||
|---|---|---|---|
27-inch display, 2.66GHz Quad-core Intel i5, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon 4850 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
145W | 365W | * | 1,245 BTU/h |
iMac (20-inch, Early 2009) | |||
|---|---|---|---|
20-inch display, 2.66GHz Intel Core 2 Duo, 2GB 1066MHz DDR3 SDRAM - 2x1GB, 320GB Serial ATA hard drive, NVIDIA GeForce 9400M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
60.7W | 108.9W | 206.4 BTU/h | 371.6 BTU/h |
iMac (24-inch, Early 2009) | |||
|---|---|---|---|
24-inch display, 2.66GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 640GB Serial ATA hard drive, NVIDIA GeForce 9400M graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
104.4W | 151.5W | 355 BTU/h | 515.2 BTU/h |
Apple Mac Pc
iMac (24-inch, Early 2009) | |||
|---|---|---|---|
24-inch display, 2.93GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 640GB Serial ATA hard drive, NVIDIA GeForce GT 120 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
116.4W | 192.2W | 395.8 BTU/h | 653.5 BTU/h |
iMac (24-inch, Early 2009) | |||
|---|---|---|---|
24-inch display, 3.06GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, NVIDIA GeForce GT 130 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
113.9W | 208.9W | 387.3 BTU/h | 710.3 BTU/h |
iMac (24-inch, Early 2009) | |||
|---|---|---|---|
24-inch display, 3.06GHz Intel Core 2 Duo, 4GB 1066MHz DDR3 SDRAM - 2x2GB, 1TB Serial ATA hard drive, ATI Radeon HD 4850 graphics | |||
Power Consumption | Thermal Output | ||
Idle | CPU Max | Idle | CPU Max |
125.5W | 215.7W | 426.7 BTU/h | 733.4 BTU/h |
* Information not available.
Notes
Pc Mac Address
- Power consumption data (watts) is measured from the wall power source and includes all power supply and system losses. Additional correction isn't needed.
- CPU Max is defined as running a compute-intensive test application that maximizes processor usage and therefore power consumption.
- These numbers reflect a 23°C (73.4°F) ambient running environment. Increased ambient temperatures require faster fan speeds which increases power consumption. At 35°C (95°F), 50W should be added to reflect increased power consumption.