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How do you herd together 14.7 million pixels? You can ask nicely, or you can brandish some heavy-duty hardware. Inside the Retina 5K iMac:
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3.5 GHz quad-core Intel Core i5 processor, with Turbo Boost up to 3.9 GHz
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8 GB (2x4 GB) of 1600 MHz DDR3 RAM
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AMD Radeon R9 M290X graphics processor with 2 GB of GDDR5 video memory
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802.11ac Wi-Fi + Bluetooth 4.0
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PCIe-based SSD storage and SATA hard drive
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Not one to waste a good model number on just a single device, Apple again recycles A1419.
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At the rear of the iMac, we find a plethora of I/O ports and a lone SDXC card slot:
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Headphone jack / Optical digital audio output
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SDXC card slot
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Four USB 3.0 ports
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Two Thunderbolt 2.0 ports
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Gigabit ethernet port
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Fixers rejoice! The iMac Intel 27" Retina 5K Display retains the familiar, easily accessible RAM upgrade slot from iMacs of yore.
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For those who require assistance replacing their RAM modules, Apple has attempted to provide some direction—that you get to see after you're halfway through the process.
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Outil utilisé dans cette étape :iMac Opening Wheel$7.99-
We're pretty adept at slicing open iMacs with our ever-so-fancy
pizza cutteriMac Opening Tool and our noble Plastic Card. -
While the procedure still requires a steady hand and a willingness to replace the custom-cut, two-sided adhesive tape when you're done, it's otherwise pretty straightforward, and unchanged from previous models.
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With the adhesive tape gone, we get our first peek at the hardware inside the Retina 5K iMac.
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The first order of business is finding out whether this 5K display runs on actual magic, or something more susceptible to dissection.
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With a few twists of our screwdriver, a very long, very thin display board is revealed.
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Let's take a look at the hardware that allows 14.7 million pixels with a resolution of 5120 x 2880 on a 27-inch display:
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Texas Instruments NH245 8-Bit Dual-Supply Bus Transceiver
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Texas Instruments BUF16821 Programmable Gamma-Voltage Generator and Vcom Calibrator
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Parade Technologies DP665 LCD Timing Controller
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Texas Instruments TPS65270 Monolithic Dual Synchronous Buck Regulator
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Texas Instruments TPS65168 High Resolution Fully Programmable LCD Bias IC for TV
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Barring the new display, the hardware inside the iMac Intel 27" Retina 5K Display looks much the same as last year's 27" iMac.
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In fact, as we dive in deeper, we realize it is very nearly exactly the same.
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And after following the guide to the letter, we've got our findings on the differences inside:
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The Retina 5K's display data cable is slightly wider—to support those extra pixels.
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Let's see what ICs this unsurprisingly familiar logic board is packing:
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AMD Radeon R9 M290X GPU
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Intel Core i5-4690 Processor
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SK Hynix H5GC2H24BFR 256 MB GDDR5 SGRAM (256 MB x 8 modules = 2 GB total)
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Delta Electronics 8904CF 143003
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Intel DH82Z87 (Z87) Platform Controller Hub
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Fairchild Semiconductor DE32GV
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Front side of logic board:
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Broadcom BCM5776 Gigabit Ethernet Controller
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Cirrus Logic 4206BCNZ Audio Controller
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Intel DSL5520 Thunderbolt 2 Controller
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LMF4S1EH 5BBCIG 47A6HPW
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Microchip Technology 1428-7 420BE5A BMY System Management Bus (SMBus) Temperature Sensor
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Intersil ISL6327 Enhanced 6-Phase PWM Controller
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This looks to be the exact same SanDisk PCIe SSD as the one found in the MacBook Pro 13" Retina Display Late 2013.
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Unsurprisingly, we find the exact same ICs:
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SanDisk 05131 016G 16 GB NAND Flash (four on each side, total of 8 x 16 GB = 128 GB)
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SK Hynix H5TQ2G63DFR 2 GB DDR3 SDRAM
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Marvell 88SS91383 PCIe SSD Controller
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The AirPort/Bluetooth card, identified by its model number BCM94360CD, is exactly the same as the one we encountered in last year's iMac Intel 27 inch:
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Broadcom BCM4360KML1G 5G WiFi 3-Stream 802.11ac Gigabit Transceiver
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Skyworks SE5516 Dual-Band 802.11a/b/g/n/ac WLAN Front-End Module
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Broadcom BCM20702 Single-Chip Bluetooth 4.0 HCI Solution with Bluetooth Low Energy (BLE) Support
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iMac 27" Retina 5K Display Repairability Score: 5 out of 10 (10 is easiest to repair)
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RAM is user-replaceable without opening the case, thanks to the rear access door.
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You can still replace the hard drive and CPU inside this machine, albeit with some adhesive cutting.
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Components are modular and fairly easy to remove.
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The glass and LCD are fused together, and there are no more magnets holding the glass in place.
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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.
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47 commentaires
Absolutely! Same procedure as last year's model: Changement CPU iMac Intel 27" EMC 2639.
Looks like you can upgrade to a new cpu (Haswell refresh probably) since it doesn't appear to be soldiered on
Thats unlikely, it depends on the mobo, i have not heard any confirmations of this so far.
Any idea what the part number is for the 8GB modules? This shows 4x2GB which is the standard. I ordered that memory configuration, expecting I can source new 8GB modules for less than Apple's price.