Crossfire Questions

Ok I have a couple question's I want to ask. First I will post my computer Spec's
CPU: 3.4Mhz AMD Phenom(tm) II X4 965 Processor
Video Cards: Two 1 Gig RadeonHD 4890 (Crossfired)
Power Supply: 700W CoolerMaster SilentPro
Ram: 4 Gig's Kingston DDR3 1333Mhz (KVR1333D3K2)
Motherboard: Asus M4A79XTD EVO AM3

My first question is. I have the setting in the catalyst software to enable crossfire X. Now a coulple hardware monitoring programs pick up both video cards but it shows that only one of the GPU's is at work. Is this normal? or is there something else I need to do to get both GPU's going?

Second question. One of them is running 10 degrees or so hotter. The one that my monitor is plugged into. Is this normal?

Thank you in advance to anyone who answers these
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