Nvidia GTX 675MX video card with 4GB RAM
Direct Replacement for AMD Radeon HD 6770M
(replaces Apple part number: 661-5967)
for Apple 27" iMac A1312 2011 model only
Please
note this card uses a newer NVIDIA GPU chip which
supports the Metal API for running MacOS Mojave & Catalina.
Flashed with custom Apple firmware to enable Boot-screen and Brightness control.
Heat-sink mounting kit included – modified X bracket and thermal pads applied.
(Heat-sink not included, re-use the current one)