Seasonic PRIME 850W Platinum PSU Review

1. Introduction2. Bundle & Cabling3. External4. Internal5. Methodology and Testing6. Closing Thoughts7. View All Pages

The Seasonic PRIME 850W Platinum is another great power supply from the company and one that strengthens the new range of Platinum units. It performs at the highest level and exhibits no weaknesses. Technically it is difficult to find fault.

While we have already reviewed 1000 watt and 1200 watt units in the same range, an 850 watt power supply is going to get a lot more attention, due to the lower price point. Let's be honest, not many people really need a 1200 watt power supply anyway.

Seasonic don't skimp on quality and have yet again opted for high grade 105c rated Japanese capacitors throughout. They seem so assured of their own quality that they raised the warranty on their units from 10 years to 12 years. Anyone buying a new Seasonic power supply should feel pretty confident that they are fully covered.

While I could comment again on the better looking Titanium rated PRIME units, I do feel the Titanium 850 Watt unit offers better value for money. It is in fact the greatest challenger the 850W Platinum power supply faces. Let me explain.

The Seasonic PRIME 850W Platinum unit that we reviewed today is priced at £204.95 inc vat (HERE) – which is a lot of money. For an extra £25, you can get the 850W Titanium unit which is technically a better power supply, quieter, and with increased levels of efficiency. This is only part of the picture however.

I have been saying for some time that the Seasonic Titanium 850 Watt is one of the most over specified units on the market. It was able to actually deliver almost 1,100 watts under extended load – which is staggering. This is because someone in Seasonic decided to incorporate hugely over-specified capacitors in this particular unit, it could easily have been marketed as a 1000 watt supply (it is more powerful than most!). This particular Titanium 850W is equipped with a 650uF and a 450uF capacitor in the primary stage, delivering a total of 1100uF. By comparison, the PRIME 850W Platinum reviewed today is equipped with two 330uF capacitors for a total of 660uF. That is a huge difference in capacitor capacity.

In my opinion, if I was already spending over £200 on a power supply, the Titanium unit with all the technical benefits, power efficiency improvements and massively over-specified capacitors is well worth the £25 extra.

Buy the Seasonic PRIME 850W Platinum from Overclockers UK for £204.95 inc vat HERE. The incredible Seasonic Prime Titanium 850W is available from Overclockers UK for £229.99 inc vat HERE.

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Pros:

• 12 year warranty.
• technically proficient.
• quiet under load.
• fully modular.
• high quality cabling.
• 105c Japanese caps.
• excellent load regulation.

Cons:

• expensive.
• capacitors are much smaller than in the 850W Titanium PRIME unit.

KitGuru says: The Seasonic PRIME 850W Platinum is yet another great power supply with class leading 12 year warranty.

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