mac4mac.co.uk

Today I'll be receiving a Crucial RAM upgrade for my iMac 19,1 which will render the original two sticks (8GB total) surplus to requirement. They have been used for five to six months.

System Report lists them as:
Size: 4 GB
Type: DDR4
Speed: 2667 MHz
Status: OK
Manufacturer: SK Hynix
Part Number: HMA851S6CJR6N-VK

These are, apparently, suitable for iMacs and minis but I'm making no compatibility claims - you check if they will work for your vintage machine.

People ask various prices on fleabay. I reckon £35 + UK mainland postage is a fair price. I'll keep them as spares rather than let them go cheaply. I don't use fleabay for many reasons.

Any questions?


--edit--
From Apple's specs...

Small Outline Dual Inline Memory Modules (SO-DIMM):
PC4-21333
Unbuffered
Nonparity
260-pin
2666MHz DDR4 SDRAM

I'm sure it would slow itself down and work happily in a 'slower' Mac.