850 W PSU
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- 80 PLUS Gold
- 120 mm fan
- 10 years guarantee
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- 120 mm fan
- 10 years guarantee
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- 120 mm fan
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- 10 years guarantee
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- 80 PLUS Platinum
- Multi GPU support
- 7 year guarantee
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Discover our range of 850 W PSU
The 850 W PSU is a powerful and versatile option for PC builders and upgraders alike. Offering ample wattage for high-performance gaming systems and workstations, an 850W power supply provides the stability and flexibility needed for modern computing. If you're planning a build with a high-end GPU, a powerful processor, and multiple storage drives, an 850W PSU ensures your system has the power it needs to run reliably under load.
One of the key benefits of an 850W PSU is its efficiency. Most reputable models come with at least an 80 Plus Gold certification, which guarantees over 87% efficiency at typical loads. Some premium models go even further, offering Platinum certification for up to 92% efficiency. Not only does this reduce your electricity usage, but it also helps minimise heat and noise, making your system quieter and more energy-efficient.
Modular design is another popular feature in this category. With an 850W modular power supply, you only connect the cables required by your components. This cuts down on internal clutter, improves airflow, and makes your build look much cleaner. Top brands like Corsair, Seasonic, and ASUS offer modular 850W units with durable components and long-lasting reliability.
Wondering if 850 watts is enough for your setup? For most users, the answer is yes. It's more than capable of powering powerful graphics cards like the RTX 4080 or 4090, along with fast CPUs and accessories. It also offers peace of mind if you're planning to overclock your components or expand your build in future. An 850W PSU also gives you headroom to avoid stressing your power supply at peak load, which can prolong its lifespan.
So, whether you're looking for a quiet, efficient power source or planning a performance-focused build, an 850W PSU delivers the right mix of power and flexibility. Browse options at Currys to find the best match for your next upgrade
- 29.9% APR
Representative (variable) - 29.9%
interest rate (variable) - £1,200
Assumed Credit Limit
*Representative example
Credit, offers and APR are subject to status and determined by the lender. 18+. Requires a Currys flexpay running credit account. Promotional interest rates may be offered on selected products from time to time. Minimum spend & exclusions apply. Missed payments may incur late fees/charges and impact your credit file.
Currys Group Limited is a credit broker under exclusive arrangements with the lender Creation Consumer Finance Ltd. Authorised & regulated by the Financial Conduct Authority.
Buy now, pay later (BNPL): Pay full balance by the end of the BNPL promotion period to avoid interest. Any balance left to pay at the end of your BNPL promotion period will incur interest from the date of your purchase.
Information about your installation
Our trusted partner OrderWork will install this item for you.
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Pay for your item and installation now. Once your order’s confirmed, OrderWork will email you to book your installation which will happen on a separate day to your item being delivered by Currys.
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An adult aged 18 or over must be present for the installation to go ahead.
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Removal and disposal of packing is not included.
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If you're a tenant, you should get permission from your landlord for the installation to be completed. ​
Read our full terms and conditions.