What is a be quiet system power U9?

The be quiet System Power U9 line consists of four members with capacities ranging from 400W to 700W. These are mainstream units, suitable for cost-effective systems with low power requirements where efficiency isn't priority one.

Is system power 8 quiet?

According to be quiet! it's practically inaudible at up to 50 per cent load (300W) and then rises steadily and predictably until full chat. System Power 8 needs to be installed into a wide range of chassis - big and small - so the 140mm depth makes sense. The other dimensions are typical, too, at 150mm wide and 86mm high.

Is be quiet a good PSU?

It isn't one of their better models but beQuiet makes good PSUs in general. I had the earlier generation of that PSU in my last PC that was five years old. Never had any problems with it I have a 650W Be Quiet in my build that was taken from a second hand build and it's still going strong. I have had only good experiences with be quiet!

Is system power 10 750 a good PSU?

The be quiet! System Power 10 750 is among the worst affordable, branded PSUs I have evaluated. The competition is way ahead in this category, offering higher performance, quality, and universal voltage compatibility (100-240 V input) at about the same price.

Should I buy a bequiet pure power or a straight power?

I'd recommend looking for a BeQuiet Pure Power, it should be not a lot more expensive but is a great QoL upgrade. Obviously a Straight Power would be the Bang for your Buck sweet spot, but those are significantly more expensive unfortunately

Should I buy a bequiet pure power PSU?

The model you linked is an entry level PSU though, which has less then ideal efficiency and can get a bit noisy. This is something every PSU in that price range will do though. I'd recommend looking for a BeQuiet Pure Power, it should be not a lot more expensive but is a great QoL upgrade.