What Case Temperature Is Too Hot?

[tkistre]

I am running a PC with 392mb DDR memory, AMD XP 1500+, ECS K7S5A, 40gig 7200rpm HD, internal Zip, floppy, CDRom, CDRW, on board sound, GeForce 2 GTS video, video capture card, modem & 80mm cooling fan mounted in back blowing in my 300w Case. I am not overclocking cpu or video. Everything is running fine on Windows XP. I thought I had read before that 120 degrees °F. was the maximum case temp. before you would start having problems. I started running MBM5 to check case, cpu temperatures. It constantly shows Primary sensor chip at 66°F (19°C) , case sensor at 109°F (43°C) and cpu sensor at 123°F (50°C.) I was hoping someone with more experience with this could let me know if all of this looks normal for my setup. Any help would be appreciated. Thanks in advance!