Last week we discussed the downward price adjustment of the prices of Mac upgrades in SSD memories and some specific models of RAM. Apple's RAM is fully optimized for the operation of Macs, but perhaps the price is being considered, when sales of these components by third-party electronics, do not stop growing.
In this sense, today we know a curiosity. If you want a iMac Pro with 256GB of RAM, you can only buy it at Apple, because the memory of other services does not work.
And the truth is that buying this memory extension on the basic equipment implies 6240 disburse € additional. That is why many customers have tried memory from other manufacturers, without success so far. Technically it is possible to insert four 64GB RAM memory modulesWell, the iMac Pro has such a slot, but the equipment won't work if you don't order it from Apple directly.
However, the memory expansion up to 256GB of RAM can be due to different factors. On the one hand, it may be due to a design limitation internal iMac Pro. If so, Apple could work on a solution that allows its use. Although it is also possible that Apple wants us to have its memory because know their behavior better or simply from lucrative way.
However, in the US forums they comment that any iMac Pro can be upgraded up to 128GB RAM. Apple may say out loud that the only computer currently with 256GB of RAM is a Mac. In any case, we are in the early tests, and it is likely that manufacturers will implement their memory for use in iMac Pro and give them 256GB RAM or Apple decides to release this limitation via firmware.