Thank you for your support and the very helpful link which shows clearly my next SFF Alderlake built needs a stronger SFX PSU. Hopefully there will be SF850+ in future. At low and medium loads the SF450 PLATINUM’s cooling fan doesn’t spin until you need it, for near-silent operation. 92mm Cooling Fan

The SF750 has only 2 PCIe splitting in two connectors. So is there a difference using 1 PCIe and 1 PCIe splitted in two and on the other hand using 3 discrete PCIe cables? I mean do I get more wattage with 3 separate PCIe cables or doesn't it matter.SF Series power supplies give you 80 PLUS Platinum efficiency, excellent electrical performance, and virtually silent operation in a SFX form factor. With 105°C Japanese capacitors and Zero RPM fan mode, they’re a great choice for high performance small form factor PC’s where reliability and low noise are essential. AN UNPRECEDENTED 750 WATT SFX PSU

Primary side: Half-Bridge & LLC Resonant Controller Secondary side: Synchronous Rectification & DC-DC convertersThe most powerful SFX power supply in the market, perfect for the most power-dense small-form-factor PCs. 80 Plus Platinum Certified SF PLATINUM power supplies deliver power with over 92% efficiency to keep energy consumption, noise, temperatures, and your power bill low. 100% All Japanese 105°C Capacitors It is not usually practical to reach unity, i.e. Power Factor 1, and it seems that most electricity supply companies accept consumers having a Power Factor as low as 0.94 (94%) without imposing a surcharge. Unfortunately most of the cheap (and not so cheerful) PSUs tend to have a Passive PF as low as 0.75 or 75% which in a large office can lead to a PF surcharge. However, the good news is that most of Quiet PC’s PSUs implement a system known as Active PFC which involves some clever electronics. This means that their power factor (PF) can be as high as 0.94 or 94% (at full load), while harmful harmonic frequencies are reduced to well below legal requirements. So by using our products, you can be happy in the knowledge that you are doing your bit to save the planet!