Ram performance is not at optimal pace.
Ram performance is not at optimal pace.
Ram isn't operating at 3000 MHz with the EMP activated... it worked before, but now it displays 1500 instead.
It seems the system reports 1500MHz but with dual channel it's effectively 3000MHz, which matches what you expect. You appear to be in good shape, though you might want to verify using CPU-Z and the memory tabs. If it shows 1500MHz dual channel, everything looks correct.
1500Mhz represents the usable rate but with Double Data Rate RAM the actual performance doubles to 3000Mhz. This isn't about faster memory, dual channels boost the bus speed, not RAM frequency. A single 3000Mhz module will function properly and deliver the expected speed even at 3000Mhz.
It was used to display 3000mhz while your girlfriend's PC still shows 3000, and the BIOS lists 2133.
The module operates at 1500mhz, which is its real operating frequency. DDR indicates Double Data Rate, delivering two bits per cycle and effectively doubling the speed. This has no connection to dual-channel functionality.
1500/3000mhz occurs when XMP is activated. When XMP isn't used, most recent Intel processors restrict performance to around 1066/2133.