PC Peripherals Case fan recommendation

Tracer_Bullet

Recruit
So i have an old CM case with 3 fans installed. One intake 140, one side intake 120 (into gpu) and 1 exhaust 120.
Both side and exhaust are 10+ year old cheap CM fans, one came with case. Front intake is new, Arctic p140. Dustfilters for both intakes. Generally all holes in case have been covered to reduce dust buildup - Had checked before and after this, there was no change in temps for me. Exhaust is not covered other than by case grill.

Its summer, i bought new gpu last year and it pushes hot air into cpu. cpu alone ( 3300x + DEEPCOOL GAMMAXX 400 V2) reaches around 80C on load which is fine and how it always was (78 on new installation 2 years back). Paste is probably ok too, cpu temp goes down quickly on idle to 45C-50C. I blow out dust from case and cpu cooler every two months or so too.

When gaming with heavy cpu+gpu load, cpu temp now goes to 90-91( it was 85 in winter). gpu is fine, around 75-76 max, similar in winter.
Case becomes hot, i am thinking using better exhaust fan might help. Would have gone for P120 but it seems to be not available.

Any recommendations for good 120mm case fans with good airflow ? I might replace both old CM fans. Don't care about RGB.
 

asmlit

Recruit
unmount the CPU cooler and check if the thermal paste has dried. Often dried thermal paste doesn't works as efficient as it should. Then try repasting with something better like gelid gc extreme. Because your idle temps are high as well.

Also, if your CPU fan is mounted horizontally, try mounting it vertically so that it can transfer the CPU heat directly to the rear exhaust.

One more thing you can try out is reversing the direction of side panel exhaust fan.