distant fern
Yes, you could set the two fans at the back (2 and 3) to intake and leave the rear fan as exhaust. Generally, having all fans as intake/exhaust is not really recommended.
Switching to the configuration that I recommend should also decrease dust build up, as you will have slight positive pressure in your case.
And you probably don't need extra fans, if the temps are fine. @finite marlin
One question though, is your front panel solid (ie. no mesh)?
finite marlin
solid
can I add fan like on top and in front?
I'll been playing games without the glass btw and everytime I put it back the games that I am playing reach to 85 temp cpu based on hwmnonitor vs no glass same game only reaching 70
Tried and tested 7 times in 2 years
so can I do 1 and top exhaust and 2,3 and front intake?
novel field
so can I do 1 and top exhaust and 2,3 and front intake?
Yeah like the fan on its own at the back(left side of the case looking at the image) should stay as it is, it is currently taking air out and pushing it out of the case, the other 2 fans on the right should be flipped around as they are currently also taking air out and pushing it out but you need them to take air in and push it in, if I'm correct you can fit 3 more fans at the top, meaning you can put either 3 fans that are pushing air in, or you can do 1 taking air out and 2 pushing it in
I personally think 1 exhaust fan(so the one taking rhe air out of your pc and pushing the air out of your pc) is enough and the rest can be intake(so taking air in and pushing it into your pc)
That is how I would do it
But it may be too much air pressure being pushed in so you can always switch one of the fans on top to exhaust the air out, like you mentioned
distant fern
Yeah I agree
If you do add extra fans, I would not set, for example, 6 to exhaust and 4 and 5 as intake, as that probably generates alot of turbulences. I think adding two extra fans at positions 4 and 5 should be enough. But maybe it makes more sense to upgrade your CPU cooler first. You can pump as much cool air into the case as you want, if you're CPU cooler cannot dissipate the heat from the CPU, it has no benefit. But since you said that your temps improve when you take the side panel off, it seems like a case airflow issue. @finite marlin
So my recommendation would be adding fans as intake at positions 4 and 5, and if temps still do not improve, get a better CPU cooler than the stock cooler you're currently using.
Also the longer I think about it, maybe the fans are just not that good