I posted them in my reply there. But i just booted up my computer now after being off all night and these are the temperatures:

I'm hoping with the rear exhaust fans, the hard drives will run cooler and with a better front intake - air flow throughout might be better. I don't know which fans to get though :S

Hi @doyll , i got a new mini computer a few days ago. The case is a Thermaltake Core V1. The front can handle one 200mm, 140mm or 120mm. It's currently using the case's stock 200m fan. I want to get a new intake and 2 outtake fans (that case is limited to two 80mm fans). My motherboard only has 1 system fan header so want to use "Phanteks PWM Fan Hub Controller" to power the 3 fans. I found out from Gigabyte that the SYS fan header supports 24W (2A x 12v). What types of fans would you suggest?

My SSD's and mechanical hard drives are mounted on the side of the case and they do tend to get hot (SSD @ 38C idle/43C under load, mechanical @ 33C idle/38C under load and mechanical @ 41C idle/46C under load when room temperature is 28C). I moved some wires and managed to get the temperature of the hard drive at the back down by 5C but i can't move the wires anymore (without crushing them).

P.S. I realize you're very fond of Phanteks cases, but i looked at the mini ones available and they were too big to fit on my desk. Plus the motherboard i have has reported problems with the VRAM getting too hot and this case moves the motherboard up to the height of the intake fan.

P.S.S. The sides of the case also have a metal mesh. I was thinking of taping some clear rigid plastic inside the case so that airflow goes in from the front and out from the back only (instead of out the sides too). Is this ok to do?

[...] As for the temps one core is always 10 degrees less that the others. A delid would help but since i won't go for extreme overclocking, i won't bother with it.

Yes, turning cooler to flow air up means it will be drawing from back of GPU and pulling air in off of GPU side away from motherboard so yes, warmer air from GPU into cooler. The more turns air has to make the more turbulence there is and the more warmer air mixes into cool airflow warming it up.
Your forth fan curve is basically what I was saying, but have fan speed curve from 30-40c @ 600rpm to 40-50c @ 800rpm, to 50-60c @ 1100rpm, 60-70c @ 1200rpm an 70 +c @ full speed.
Monitoring air temp into cooler and comparing that temp to room air entering case tells us how much higher air temp into component is so we can work on case airflow and get air temp into cooler 5c or less above room temp.

Temps seem kinda high for that speed. My 3770K needs 1.315 for 4600, and those are the temps I saw with Linpack and less case flow then I have now, but I was using a TY143 so that could be why.. Maybe try spinning your cooler 180 and see if there is any change. Too much TIM insulates, not enough TIM is well.. not enough.. I just benched my X5690 at 4800mhz @ 1.6v with it last week, so its pretty decent, and I did it with the windows closed

I have a TY147A and TY147B in push/pull using TF8 for TIM.

I don't know about the GPU but I think using the back fan as an intake it should minimize the affect? The rule of thumb I've seen, based off testing with the back fan as an exhaust, is mount the CPU heatsync vertical for open GPU's and horizontal for blower/watercooled GPU's.

Just an idea if you have the time to try out.