Introducción
We got up this morning to news that the new iMacs were out, so we knew what we had to do: start sharpening our suction cups!
Thankfully, this iMac model opens in the same way as previous generations. All you have to do is pull off the magnetically-held display glass with two medium-size suction cups, and then remove the screws holding the LCD in place.
But what lies inside? Only one way to find out...
Qué necesitas
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Presentando la nueva iMac de 21.5", ahora con caracteristicas adicionales tales como puerto Thunderbolt y un procesador Quad-Core (4 nucleos)
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Especificaciones Técnicas:
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Procesador Intel Core i5 con 6mb de chache compartido L3 integrado
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Disco Rígido Wstern Digital 7200RPM
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Ports on the backside of the iMac include:
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Audio line out
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Audio line in
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Four USB 2.0 ports
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Firewire 800 port
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Thunderbolt port
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Gigabit Ethernet port
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The SDXC card slot is located underneath the optical drive.
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Similar to the Thunderbolt IC we found in the MacBook Pro 15" Unibody Early 2011, the iMac Intel 21.5" EMC 2428 features the Intel L102IA84 EFL Thunderbolt port IC.
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Several Torx T10 screws hold the logic board in place. We make short work of them.
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Is it just us, or does the logic board layout (with heat sinks) look a bit like the original Starship Enterprise?
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In usual Apple fashion, one heat sink is reserved for the CPU, while the other oversees the GPU.
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And, in usual Apple fashion, you have to void the warranty in order to get a peep at the processing power underneath.
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In the RAM department, this iMac has space for four 204-pin PC3-10600 SO-DIMM chips.
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With a bit of magic, the GPU heat sink detaches from the logic board, exposing the AMD GPU.
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The main chips on the GPU include:
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AMD Radeon HD 6750M GPU
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Four Hynix H5GQ1H24AFR T2L 1 Gb GDDR5 SDRAM chips (totaling a cumulative 512 MB)
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We'll do almost anything in the name of science.
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After popping off the CPU heat sink, we can get a good look at the Core i5 processor.
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Our machine is powered by a quad core 2.5 GHz Core i5-2400S CPU with 6 MB of Intel Smart Cache.
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The main chips on the logic board include:
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2.5 GHz quad-core Intel Core i5-2400S CPU with 6 MB of Intel Smart Cache.
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Intel BD82Z68 Platform Controller Hub
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Broadcom BCM57765B0KMLG Integrated Gigabit Ethernet and Memory Card Reader Controller
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Cirrus 4206BCNZ audio controller
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SMSC USX2061 (we believe this a USB 2.0 Hub Controller Family)
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Intersil ISL6364 CRZ Single-Phase Synchronous-Buck PWM voltage regulator for GPU core power applications
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Intel L102IA84 EFL Thunderbolt port IC
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Next, we can remove the Bluetooth board from the iMac.
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With the help of our trusty iFixit vise (which is made of the same material as our spudgers, and is ESD-safe), we're able to desolder the shield covering the little Bluetooth board to reveal the chip goodies underneath.
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At its heart lies:
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Broadcom BCM2046 Bluetooth IC
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256 KB of SST 39VF200A CMOS Multi-Purpose Flash (MPF)
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iMac 21.5" EMC 2428 Repairability Score: 7 out of 10 (10 is easiest to repair)
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The front glass panel and LCD are quite easy to remove for accessing all the hardware underneath.
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RAM, hard drive, and optical drive can be replaced with relative ease, as long as you don't mind taking out the LCD (for the drives).
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Limited use of adhesives (pretty much all the fasteners are mechanical) make disassembly pretty straightforward.
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Replacing the CPU and GPU is possible to do, but you need to remove the logic board from the computer.
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Removing the logic board is a pain, since you have to disconnect a bunch of connectors, and wiggle it out of the machine.
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Making the LCD and glass spotless when reassembling the machine is nearly impossible. (compressed air is useful when trying to remove dust from the display or glass panel)
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Like being able to see the guts of your machines? Check out our iPhone 4 transparent rear panel!
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26 comentarios
In the location you suspect an SSD to reside (in models so equipped) is a spare power connector and SATA cable connector available to add an SSD drive at a later date?
I'd like to know that, too. If so, it would be awesome!
I'm dying to know this too! Are there power/data cables in place? Are the mounting points ready to accommodate a drive?
I'm afraid this teardown won't answer these questions. Will you be cracking open a 27" unit?
The cable was not there, but there is an extra standard SATA data socket on the board along with a proprietary power socket labeled "SSD Power". Not sure where you could get the cable to make it work though.
In step 11 you mention how lifting the heat sink off will void the warranty.
Surely you have voided the warranty already by now.
Can I open up my brand new iMac, put in a better hard drive and still be within my warranty? I am guessing I would be laughed right out of the genius bar, but if it isn't so .. do tell.
