It's a matter of opinion here , I use Corsair Dominator GT2000 8 8 8 24 1T 4gb kit for 1090T , I use this same kit but 6gb for my i7 9xx . There is less expensive decent memory out there . One of the key things in buying memory is but the highest frequency you can afford , for example my GT2000 kit allows me more oc combinations then a 1600 kit will . Of coarse look for nice tight timming with a 1T command rate .
Room Temp H20 | 2 Stage Cascade | PH II X6 1090T BE | PH II X2 555 / Asus CH4 v905 | i7 970 / Asus R2E v1914 | Corsair HX1000 1210W | Asus 5970 QF | Corsair Dominator GT 2000 | WD VR 3+0 Raid ( 450gb )