Q9300 Core Temperatures Versus CPU Temperature Readings (SpeedFan & EasyTune6)

Hi all, :)

I am a bit confused and was wondering what the difference in temperature readings I am seeing means. I am running the latest version of speedfan and EasyTune6 and I see this in one of the columns for SpeedFan.

Temp1: 34C
Temp2: 27C
Temp3: -2C
Temp: 18C
HD0: 27C
Core 0:53C
Core 1:53C
Core 2:51C
Core 3:50C

Ok so Core 0 - 3 are my 4 core's temperatures? but when I look at gigabyte EasyTune6 software its showing my CPU temp as 27C. Which aligns with Speedfans Temp2 reading.

What reading is correct? Shouldn't the CPU temp be of all the cores? :confused:

Specs:
Gigabyte Ep45-UD3P Motherboard
Intel Core 2 Quad Processor Q9300
8gb PC2-8500 (DDR2-1066) OCZ Reaper Memory
500gb Seagate SATA Hard Drive
20x LG SATA Dvd Burner
Soundblaster Audigy 2 ZS Sound Card
MSI ATI Radeon HD3850 512MB

Try realtemp. The temps realtemp shows are most likely correct and will let you know at what to look with speedfan.