2024年11月2日发(作者：房绿蓉)
iMac Intel 27" EMC 2639 Teardown
Teardown of the fall 2013 27" intel iMac, EMC 2639.
Written By: Sam Goldheart
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
INTRODUCTION
In the calm after the iPhone 5s/c storm, Apple thought it could slip a couple new iMacs by us. Time
for us to get our pry on and pop this next generation 27" iMac wide open for a quick tour of the
highlights.
We also tore apart the newly refreshed smaller-brother iMac 21.5"—head over to its teardown and
check it out too.
Can't get enough of our play-by-play? Show us your game face on Twitter, Instagram, or Facebook.
TOOLS:
iMac Opening Tool (1)
Plastic Cards (1)
Spudger (1)
T5 Torx Screwdriver (1)
T8 Torx Screwdriver (1)
T10 Torx Screwdriver (1)
PARTS:
iMac Intel 27" EMC 2639 Adhesive Strips
(1)
includes iMac Opening Tool
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 1 — iMac Intel 27" EMC 2639 Teardown
Externally, the iMac Intel 27" EMC
2639 looks identical to the previous
generation, but the interior specs
have been upgraded:
3.2GHz quad-core Intel Core i5
processor (Turbo Boost up to
3.6GHz) with 6MB L3 cache
NVIDIA GeForce GT 755M
graphics processor with 1GB of
GDDR5 memory
802.11ac Wi-Fi
PCIe flash SSD available
Step 2
After some quick slicing with our handy iMac Opening Tool, we pop the hood and get a massive
bout of deja vu.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 3
The AirPort/Bluetooth card, conforming to the 802.11ac Wi-Fi standard, still clings to the back of
the logic board — making replacement no easier than before.
Not the first Mac to get updated with the new ac standard, we expected to see some similar
hardware as in the refreshed MacBook Airs from earlier this year.
Chips off the old new block:
Broadcom BCM4360KML1G 5G WiFi 3-Stream 802.11ac Gigabit Transceiver—as expected,
this is the same chip driving the ac Wi-Fi in the 11" and 13" MacBook Air
Skyworks SE5516 Dual-Band 802.11a/b/g/n/ac WLAN Front-End Module
Broadcom BCM20702 Single-Chip Bluetooth 4.0 HCI Solution with Bluetooth Low Energy (BLE)
Support
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 4
As is now standard across all new
iMacs, the new iMac 27" features
support for PCIe-based flash
storage. This is a pleasant surprise
compared to last year's 21.5" model,
when we were left sorely
disappointed by unpopulated solder
pads on our low-end logic board.
According to Apple, the inclusion of
PCIe flash storage allows for up to
50 percent faster speeds than the
previous generation.
The Fusion Drive option combines
the large storage capacity of a hard
drive with the high performance of
flash to deliver shorter boot times
and faster access to apps and files.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 5
Apple's iMac refresh included some sneaky changes to the 21.5" model, and we were more than a
little perturbed to discover a soldered CPU.
Thankfully, its 27" big brother was saved from the same fate, and power users will still be able to
upgrade their processor without a reflow oven.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 6
Heavy-weight ICs:
3.2GHz quad-core Intel Core i5 processor
Intel platform controller hub
As advertised, the iMac 27" now sports a fancy new graphics processor:
NVIDIA GeForce GT 755M GPU
Four SK hynix H5GQ2H24AFR 256 MB GDDR5 SGRAM ICs make up the 1 GB of graphics
RAM
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 7
The B-side of our IC record:
NXP ARM7TDMI-S based
Microcontroller
Analog Devices SSM3302 audio
amplifier
Cirrus Logic 4206BCNZ audio
controller, the same chip as found
in last year's 21.5"
Vimicro VC0359 webcam
processor
Broadcom BCM57765A1KMLG
gigabit ethernet controller with
integrated SDXC card reader
Intel DSL3510L Cactus Ridge
Thunderbolt controller
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 8
iMac 27" EMC 2639 Repairability Score: 5 out of 10 (10 is easiest to repair)
RAM is user-replaceable without opening the case, thanks to the rear access door.
You can still replace the hard drive and CPU inside this machine, albeit with some adhesive
cutting.
Components are modular and fairly easy to remove.
Budget-minded folks now can add a second hard drive to the base iMac because the Fusion Drive
connector is no longer missing from the logic board.
The glass and LCD are fused together, and there are no more magnets holding the glass in place.
You'll have to masterfully peel off the old double-sided sticky tape and apply new tape in order to
reseal this iMac into original condition.
To reassemble your device, follow these instructions in reverse order.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
2024年11月2日发(作者：房绿蓉)
iMac Intel 27" EMC 2639 Teardown
Teardown of the fall 2013 27" intel iMac, EMC 2639.
Written By: Sam Goldheart
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
INTRODUCTION
In the calm after the iPhone 5s/c storm, Apple thought it could slip a couple new iMacs by us. Time
for us to get our pry on and pop this next generation 27" iMac wide open for a quick tour of the
highlights.
We also tore apart the newly refreshed smaller-brother iMac 21.5"—head over to its teardown and
check it out too.
Can't get enough of our play-by-play? Show us your game face on Twitter, Instagram, or Facebook.
TOOLS:
iMac Opening Tool (1)
Plastic Cards (1)
Spudger (1)
T5 Torx Screwdriver (1)
T8 Torx Screwdriver (1)
T10 Torx Screwdriver (1)
PARTS:
iMac Intel 27" EMC 2639 Adhesive Strips
(1)
includes iMac Opening Tool
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 1 — iMac Intel 27" EMC 2639 Teardown
Externally, the iMac Intel 27" EMC
2639 looks identical to the previous
generation, but the interior specs
have been upgraded:
3.2GHz quad-core Intel Core i5
processor (Turbo Boost up to
3.6GHz) with 6MB L3 cache
NVIDIA GeForce GT 755M
graphics processor with 1GB of
GDDR5 memory
802.11ac Wi-Fi
PCIe flash SSD available
Step 2
After some quick slicing with our handy iMac Opening Tool, we pop the hood and get a massive
bout of deja vu.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 3
The AirPort/Bluetooth card, conforming to the 802.11ac Wi-Fi standard, still clings to the back of
the logic board — making replacement no easier than before.
Not the first Mac to get updated with the new ac standard, we expected to see some similar
hardware as in the refreshed MacBook Airs from earlier this year.
Chips off the old new block:
Broadcom BCM4360KML1G 5G WiFi 3-Stream 802.11ac Gigabit Transceiver—as expected,
this is the same chip driving the ac Wi-Fi in the 11" and 13" MacBook Air
Skyworks SE5516 Dual-Band 802.11a/b/g/n/ac WLAN Front-End Module
Broadcom BCM20702 Single-Chip Bluetooth 4.0 HCI Solution with Bluetooth Low Energy (BLE)
Support
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 4
As is now standard across all new
iMacs, the new iMac 27" features
support for PCIe-based flash
storage. This is a pleasant surprise
compared to last year's 21.5" model,
when we were left sorely
disappointed by unpopulated solder
pads on our low-end logic board.
According to Apple, the inclusion of
PCIe flash storage allows for up to
50 percent faster speeds than the
previous generation.
The Fusion Drive option combines
the large storage capacity of a hard
drive with the high performance of
flash to deliver shorter boot times
and faster access to apps and files.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 5
Apple's iMac refresh included some sneaky changes to the 21.5" model, and we were more than a
little perturbed to discover a soldered CPU.
Thankfully, its 27" big brother was saved from the same fate, and power users will still be able to
upgrade their processor without a reflow oven.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 6
Heavy-weight ICs:
3.2GHz quad-core Intel Core i5 processor
Intel platform controller hub
As advertised, the iMac 27" now sports a fancy new graphics processor:
NVIDIA GeForce GT 755M GPU
Four SK hynix H5GQ2H24AFR 256 MB GDDR5 SGRAM ICs make up the 1 GB of graphics
RAM
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 7
The B-side of our IC record:
NXP ARM7TDMI-S based
Microcontroller
Analog Devices SSM3302 audio
amplifier
Cirrus Logic 4206BCNZ audio
controller, the same chip as found
in last year's 21.5"
Vimicro VC0359 webcam
processor
Broadcom BCM57765A1KMLG
gigabit ethernet controller with
integrated SDXC card reader
Intel DSL3510L Cactus Ridge
Thunderbolt controller
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA
Step 8
iMac 27" EMC 2639 Repairability Score: 5 out of 10 (10 is easiest to repair)
RAM is user-replaceable without opening the case, thanks to the rear access door.
You can still replace the hard drive and CPU inside this machine, albeit with some adhesive
cutting.
Components are modular and fairly easy to remove.
Budget-minded folks now can add a second hard drive to the base iMac because the Fusion Drive
connector is no longer missing from the logic board.
The glass and LCD are fused together, and there are no more magnets holding the glass in place.
You'll have to masterfully peel off the old double-sided sticky tape and apply new tape in order to
reseal this iMac into original condition.
To reassemble your device, follow these instructions in reverse order.
This document was generated on 2020-11-14 06:10:01 PM (MST).
© iFixit — CC BY-NC-SA