Voltage monitor missing + 2 GPUs detected

Hi guys.

This has been a problem for quite a while, but I've been too lazy to ask. Now I'm not, so here goes.

I'm using a MSI GTX 660TI PE OC, with latest AB 3.0.0. So the first thing is that now in the monitor tab, I'm seeing rows for GPU2 even though I only have 1 GPU. Where is the second GPU coming from? My integrated GPU?

Second thing is that for a while now, I cannot find the voltage row in Monitoring, even though I already have Unlock Voltage Monitoring enabled. The rows I have are:
Framerate, Frametime, CPU* temps, CPU* usage, RAM, Pagefile usage, GPU1 power, temps, usage, FB, VID, BUS usage, GPU2 usage, GPU2 VID usage, GPU1 fanspeed, GPU1 fan tachometer, GPU1 core, mem clock, GPU1 mem usage, GPU2 mem usage, GPU1 power, voltage, OV max, utilization limit.

So yeah, how do I get back the exact voltage reading that used to be available with Beta 17 (I think).

Also, just out of curiosity, what's the difference between Standard and Extended MSI voltage control?

My system specs are:
ASUS P8Z77-M
i5 3570k
MSI GTX660TI PE OC, driver version 337.50
2x4GB G.Skill Sniper Black
750W FSP Raider