HAF 922 , question

The vid cards take air from inside the case and exhaust it out thru the vents by the monitor outputs.

The thing that works best is what keeps the box the coolest. Unobstucted airflow is the key. Having the large fan on case side, interfered with video card cooling. Airflow from one fan can and does interfere with airflow from other fans.
I have altered the case side fans airflow on two separate case designs. Both times resulted in lower vid card temps. The HAF 932 with its bottom tray cpu cutout offered a bonus. Putting a case fan on bottom tray side added further cooling to cpu. +/-10C

I also added little card board vents to channel airflow to specific components, specifically the cpu fans.

A little common sense goes along way.

Catswold said:

Probably the only thing that would improve it would be the new cases with the boards mounted vertically. That would allow the heat from the GPU to flow directly up and out without impinging on the CPU cooler.

That would be a nice move

So, if i don't OC ... is not worth to remove the HDD cage ?

LMAO,
Dude, if you like to be industrious, have at it. You learn nothing from nothing. WTF you got too lose. Make a plan, and execute it.

SSD's are known to get warm. I have 4 in the lower trays, case front fan right there on them.

They do have HDD coolers that you put the drive in and then install into the cd-rom bays. Fairly cheap.

Your not OC'ing so you just need to maintain good airflow watch the ambient temp of the room, your puter is in. My apt has steam heat, its warmer in winter than summer sometimes. Keep dust build up at a minimum from cpu heat sink and case fans.
I OC'ed my system to hell, cpu, ram and vid cards. All stock cooling in place. Stock INTEL cpu heat sink, no ram cooler, vid card fans at 90%. System idles in 40'sC and peaks below 70C. So you really do not have to do anything, but, nothing ventured, nothing gained.

luck

I wanna try it :)
But the only problem is, how to fix the HDD's in the cage, above the HDD cage.

The slide out trays are for the HD's.
The bays at top are cd-rom bays.
What is there to cut. The slide tray bays are covered by the front side case fan. The top bays have knock outs in them that just twist out.
Put the cpu and its sink on mobo before install into case.
What are you talking about cutting for?
I Googled the 922, FYI.