Found an incomplete sentence: “Sometimes slow evolution a good thing in the PC industry.”
Why have you substituted “pc” for “%”? The symbol is more recognisable and is instantly understood to mean percent, “pc” is not.
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It's good to see a 550W PSU be reviewed rather than a 1000W PSU. I think the prevalence of high wattage PSUs is encouraging people to buy PSUs not suited to their machines which isn't good for anyone.