Performa 6500 CPU and PSU fans...Noctua swapout

[Bubheart'sDaddy73]

I just bought a beautiful Performa 6500/275 near-mint condition unmarked (lucky find). It may not be necessary but I thought it might be useful to swap out the CPU and PSU fans with Noctuas (I'm a huge fan, pun intended). I'm not as tech-savvy as most here, to my shame, so can I ask anyone if they know - would PWM or non-PWM fans work? Which would work best, in your opinion? Thanks.

 

[Bubheart'sDaddy73]

In reply to my own post (first sign of madness..?), I did a bit more investigating and it turns out both the CPU and PSU fans only connect via 2 pins (- and +) therefore I opted to buy the Noctua non-PWM versions ('NF-A4x10 FLX' for the CPU [40mm x 10mm] and 'NF-A9 FLX' for the PSU [92mm x 25mm]), having the 3rd pin remain unused on both fans. Getting the PWM versions would be a bit pointless I think. Looking forward to the upgrade, I've been wanting to re-buy this machine for 20 years, some do not like it but I love it - it has immense nostalgia for me!). Now all I need is a Radeon 7000 and I can put her back together