Mere hours after Apple announced the new 27-inch iMac with Retina 5K display options along with the new, lower entry level pricing on that model – OWC has obtained the newest model and finished our unboxing and teardown.
While the 3.5GHz and 4.0GHz models are identical, the 3.3GHz model does utilize a AMD Radeon R9 M290 graphics processor (as opposed to the AMD Radeon R9 M290X or optional AMD Radeon R9 M295X of the faster machines). While all three support the full native resolution of 5120‑by‑2880 as well as up to 3840-by-2160 on an external display the R9 M290 has a GPU Clock speed of 947MHz while the M290X boasts a full 1GHz. In our initial testing, we really aren’t noting any real-world differences between the two so far.
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Additionally, all the models do have a 2-lane PCIe slot (whether ordered with an SSD or not) and we’ve tested it works with other Apple SSDs. There’s definitely a noticeable difference in startup times when booting from the 3.5″ Seagate drive versus the PCIe SSD. If you’re looking for more capacity, we do offer the OWC In-line Digital Thermal Sensor for this model and our own flash upgrade will be coming soon for these as well.
So, without further ado… here’s the unboxing and teardown galleries for your viewing pleasure:
OWC Unboxing iMac 5K 2015:
OWC Memory Upgrade for iMac 5K 2015:
OWC Teardown of the iMac 5K 2015: