Sirs, 
I display onto my G15 lcd screen the temps. The motherboard and the cpu temp are always the same value. This is very suspicious to me. 
I am using AIDA64 (64 bit) version 1.20.1150 
My system config: 
Case - Silverstone Fortress FT02 - Special Edition (painted red inside) 
PSU - Silverstone Strider Plus SST-ST1000-P 
Drive C: Western Digital Velociraptor 600GB 
Drive D: and E: Western Digital Caviar Black 2TB  << two 
Drive R: and S: Western Digital Caviar Green 2TB  << two 
MB - Maximus III Formula  
CPU - Intel Core i7-870 LGA1156 45nm Quad-Core Processor 
CPU Cooler - Tuniq Tower-120 Extreme Rev 1. 
Video - Sapphire 100282-3SR Radeon HD5850 1024MB 256-bit GDDR5 
DVD - DVD Samsung SH-S223 DVD  
BlueRay - BluRay Reader 
Memory - 8GB - Corsair XMS3 4GB (2x2GB) DDR3 12800C7 (1600MHz) Dual-Channel Kit (CMX4GX3M2A1600C7) 
Sound - ASUS Xonar D2/PM Ultra Fidelity 7.1 PCI Sound Card, 192KHz/24Bit, w/ Dolby/DTS 
Win 7 Ultimate