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There is no doubt that Corsair's partnership with Great Wall has delivered some great power supplies in the past, and the SF1000L SFX-L continues that trend. Overall performance levels from this power supply are excellent with no real discernible weaknesses we can note. This unit is capable of handling a smaller form factor gaming system utilising a high power draw RTX 4090 graphics card.
My main issue with this power supply is the noise generated once loads hits 600 Watts and higher. At around 750 Watts, I found the noise output to be slightly distracting, and at over 900 Watts the unit was clearly audible above several systems running in the same room. You could argue that for a smaller form factor gaming system this added airflow would be beneficial long term but, for me personally, I would struggle to deal with the noise output if the power demand was more than 600 Watts. I feel Corsair and Great Wall could have optimised the noise output to airflow ratio a little better.
Pricing for a supply in this category is very fair, and technically you would be confident that the unit will deliver high levels of clean power long term. Corsair have adopted high grade Japanese 105C rated capacitors in the primary stage, and noise suppression is stellar. Load regulation was also rock solid throughout our testing.
You can buy the Corsair SF1000L SFX-L from Overclockers UK for £219.95 HERE.
Pros:
- Reasonable pricing for an SFX-L unit.
- Load regulation is tight.
- High levels of build quality.
- Efficient for a 80 Plus Gold unit.
- Fully modular.
- Fluid dynamic bearing fan should last.
- Seven year warranty.
Cons:
- Loud under moderate and higher loads.
KitGuru says: If you don't mind some extra noise under load, the Corsair SF1000L SF-L delivers exceptionally high quality power right up to the rated 1000 Watts. The adoption of quality 105C Japanese Rubycon capacitors in the primary stage and 7 year warranty will surely give peace of mind for anyone in the market for a new power supply.
