3,200.00.There's a ton of responses out there whether you can/cannot re-solder memory chips to Apple logic boards in an attempt to upgrade RAM. Macbook Pro Retina 15.4 A1398 Internal Left & Right Speaker 2012-2015 with Free Fivestar and Sixstar Shape Screwdeives. Apple spare parts, macbook pro replacement parts, macbook parts. Scaled resolutions: 1680 by 1050, 1440 by 900, and 1024 by 640 pixels.Price: 0 44,500.The key here is how accurately the rework station can deliver the heat necessary to flow the solder.Because the heated air or infrared light is focused directly to the work piece, heat damage to the remainder of the board is mitigatedAs for my personal experience, I have had GPU's replaced in Apple logic boards that weren't covered by Apple's GPU replacement program using this exact method and not only got a year's warranty on the work, but the logic boards lasted for years after.So, can this work be done? Yes. A quick search on Amazon yields both infrared and hot air rework stations that vary in price from $150 to $6,000 depending on the the bells and whistles you want. It doesn't need to go back to the factory as doing BGA rework doesn't damage the board.Are you going to do this with a soldering iron/gun that you get from Radio Shack or your local electronics supply store? No.However, obtaining a BGA rework station is not out of the realm of possibility either. 1 You actually don't need a significant amount of "electronic engineering" skill to remove a chip and replace it with another. No idea how much memory can be addressedReplacing a chip is actually quite an easy process if you have a BGA rework station and a little bit of practice. Basically, they all revolve around one of the following three themes: Depending on the type, the logic board and the memory modules available at the time may impose a limit less than what the CPU can address.Haven't you ever noticed that everymac.com has tested higher configurations that what was technically specified by Apple?This is because what was available at the time the product was released, higher density memory chips weren't generally available. For example, on an original i7-920 CPU, the maximum amount of memory that can be addressed is 24GB of RAM.If you notice, Intel states that it's determined by the "type of memory." This is where the logic board comes into play. There has even been conjecture on the "additional (physical) space" required for the new chips.First and foremost, the memory limit is primarily determined by the CPU.Same real estate, same configuration.So, can you get "bigger" memory chips? Yes.Again, in the pre-soldered RAM days of Apple it was quite easy to upgrade your memory. So, using the example I linked with DigiKey, you could have 8 modules of 16M for 128M or 8 modules of 512M for 4G. As for physical layout, pin out configuration, voltages, etc., they are identical. You replaced the module(s) with larger ones.Memory modules (of a particular family) 2 only differ in density.
![]() Replacement Ram Chip For A 2013 Book Pro Pro Replacement Parts![]() You could also remove the parts from another rMBP (e.g. It's not intended to be the specification for memory used in any Apple or other manufacturers' product.You can definitely buy the requisite parts aftermarket - DigiKey would be the first place I would look. I had about an hour or two of training and became quite proficient at it.2 The memory shown here is for illustration purposes only. They gave me this job so the actual tech could spend time diagnosing the problem rather than spend time doing the mundane work of re-flowing a BGA. However, for about a week every 3 months I was in the QA department re-flowing chips using a hot air rework station like the one referenced. Normally, I worked in product management as a go between marketing and development. It's a tightly packed double-sided board, so you need to be careful not to disturb other things nearby.I don't know how the machine knows how much RAM it is supposed to have. You're going to need someone very experienced with BGA rework with the appropriate equipment. You are not going to do it at home. Mac terminal emulator windowsI would recommend selling the old machine on eBay (resale price is good!) and buying a new one with the specs that you want. It might be possible, but it won't be easy. You can find schematics of the rMBP online, and they may tell you if there is an SPD chip.The iFixit teardowns show that the lower-specced machines do not have empty space for more chips Apple does RAM upgrades by putting higher density parts in the same locations.So. It might be written to one of the many NVMs elsewhere on the board, which would be harder to modify.
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