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OCZ ZX 1250W Power Supply Review

The OCZ ZX 1250W is certainly an impressive power supply and one which excelled throughout all our testing over the last couple of days. If you need a substantial supply for multiple high power demand graphics cards then this should certainly be shortlisted, along with the Corsair AX1200 and the less expensive 80 Plus Bronze certified ADATA HM 1200W.

This is a heck of a comeback for OCZ in the high end sector and it is going head to head with the class leading units. All our testing showed positive results, with stable output regulation delivery and quick response with demanding cross loading. The 12V rail in particular is a monster and one of the best we have tested, easily delivering 95A+ without a problem.

Ripple suppression is another highlight, with all minor rails peaking at 15mV under full load. The 12V+ rail hit 30mV at full load, which is basically a quarter of the recommended safe limits under the tolerance guidelines. Any power supply which can output 1250W with such strong ripple suppression deserves special mention.

The appearance is both attractive and well finished, with a modest colour scheme deliberately selected to suit a wide cross section of windowed system builds. The only downside is that the matt finish can attract finger prints, but it is such a minor niggle that a simple rub of a cloth rectifies. The colour coded modular connectors are well thought out and the cabling itself is of the highest quality, with sleeves to enhance the appearance.

Internally, the Great Wall design is very clean and a proven design which works well. The adoption of high grade 105c capacitors, helps ensure long life and stable high temperature power delivery. With OCZ’s five year ‘power swap’ coverage prospective customers are clearly in good hands.

UK pricing is not yet confirmed, but in the states it is selling for $240. This, in theory should translate to a price around £200 including VAT which means this is extremely good value.

Pros:

  • Good pricing
  • exceptional build quality
  • high quality components used in the design
  • Ripple results are class leading
  • Bundle is fantastic

Cons:

  • We didn’t like the shrink wrapping, a felt bag would have been much nicer

KitGuru says: OCZ are back in the high end, and in damn fine form we might add.

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Rating: 9.0.

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