Picked up some PC3866 for my R5 1600 system (yes i know Ryzen won't run that speed but it's future proof and we don't know what Zen2 is going to bring...)
Obviously i can't just turn on the XMP and let it run as my Asrock AB350 Pro4 board just sits there restarting for a minute or so trying to find some settings that work and eventually boots with the default 2200(ish) setting.
I've tried turning on the XMP (18-19-19-39 & 2 dozen other settings that i don't recognise) and slowing it down to 3333 but i'm getting slower Cinebench and PerformanceTest9 scores than the Patriot Viper 3200mhz that i'm replacing
I've heard great things about the speed of this stuff but i'm not able to reproduce the results on my machine.
Obviously i can't just turn on the XMP and let it run as my Asrock AB350 Pro4 board just sits there restarting for a minute or so trying to find some settings that work and eventually boots with the default 2200(ish) setting.
I've tried turning on the XMP (18-19-19-39 & 2 dozen other settings that i don't recognise) and slowing it down to 3333 but i'm getting slower Cinebench and PerformanceTest9 scores than the Patriot Viper 3200mhz that i'm replacing

I've heard great things about the speed of this stuff but i'm not able to reproduce the results on my machine.