Is something wrong with my temperature / voltage monitor?

[Continuity27]

So here's the problem. New motherboard (DFI Lanparty UT SLI-DR), and while I'm having no issues like freezing, artifacts, etc... My two video cards are showing around 100C at full load. My CPU voltage in nTune seems to be odd too, but I'm not sure...

Anyways, here's a screenshot of nTune while I'm mostly idle.
Idle

Here's one while running RTHDRIBL. (nTune)
Load

I'm using:
DFI Lanparty UT SLI-DR
AMD Athlon 64 4000+
2x 512MB (1GB) OCZ PC3200 EL Platinum Rev. 2
2x eVGA 6800GT
Thermaltake Tsunami Dream case
Enermax 535W EG565P-VE
WD Raptor 74GB
2x 160GB Seagate NCQ 7200.8
NEC ND-3500A
etc

Is it actually possible I'm running at these temperatures without noticing any problems whatsoever? Or are my temperature readings off? It's 70F in my room.

 

[Continuity27]

I'm pretty sure it was never this high, I remember before, it was like 70 something C max, or maybe 80... I was using an MSI motherboard back then. Could it be the motherboard incorrectly monitoring the temperatures?

 

[Continuity27]

What HSF for the 6800GT would you guys recommend for me? Probably one that blows the boiling hot air out of the case right? I'm not so much worried about my video cards, that are set to throtte at 135C, but moreso about the other chips on my motherboard.

What do you think?