OCZ GameXStream 1010w
The OCZ GameXStream 1010w entered testing with decent build quality from a well known OEM, but from a product line that has had a reputation for not being their best to date. However, our previous experience with the lower wattage Epsilon based FSP BlueStorm II was very good so we were hopeful that the GameXStream would follow in its foot steps. Unfortunately, that was not to be as the unit had a number of failings. The first and most apparent was apparent right out of the box. The unit is labeled with 2 different 12v amperage ratings which were quickly followed by the unit being specified for more ripple/noise than what is allowed by the ATX12v specification. Yes, the unit does not comply with ATX12v spec by OCZâ€™s own admission. We recently saw this issue in our 450w-500w Battle Royal from a couple of less-than-reputable manufacturers, so finding this issue carrying over to a much better OEM and brand is extremely disappointing. This worry was then borne out during testing when the OCZ GameXStream exhibited more ripple/noise on the 3.3v/5v rails than is allowed by the ATX12v specification. Previously other reviewers have reported out of specification ripple/noise on the 12v rails with other OCZ/FSP Epsilon based units at high loads, however we were unable to verify these ourselves because neither unit we had in for testing would complete a 100% load test. As it stands today the OCZ GameXStream 1010w is not all it should or could be. If OCZ can get together with FSP and iron out the 12v amperage and ripple/noise ratings issue, the noise/ripple performance issue, and full power loading at relevant temperatures (not 25c), there would be a lot to like in the OCZ GameXStream 1010w. The unit would then pack a cool efficient 1000w power supply into a standard size form factor with a 120mm fan at a reasonable price point. That however is not what we have here today.
OCZ ProXStream 1000w
The OCZ ProXStream was a product that demonstrated excellent build quality from the get go. Unlike the OCZ GameXStream 1010w there were no labeling issues, and the component selection was simply top-notch including the use of Rubycon primary capacitors. This build quality resulted in a product that performed well in all our tests, albeit with a few reservations. While the ProXStream exhibited good efficiency at loads of 80% and below it did so with a very loud single 80mm fan that was trying to blow through a densely packed interior. This resulted in some extremely hot exhaust temperatures that leave some question about the longevity of the unit. However, in our tests the ProXStream 1000w did everything it was supposed to do and did it well. This includes the 8 hour Torture Test that was completed with an exhaust temperature of 55c. During all of this the ProXStream one upped the GameXStream once more by exhibiting very good DC output quality never once even approaching the ATX12v specification limits. Overall the ProXStream is everything the GameXStream should have been and is a very good unit if the absolutely amazing amount of noise it makes can be overlooked. At the end of the day noise does not factor into our metrics for evaluation so the ProXStream earns a Silver Editors Choice award.
The Bottom Line
Today we had the opportunity to review two top-of-the-line power supplies from the same company, but came away with two completely different results. Oddly enough from the marketing information OCZ provides with these units on their website they seem to target the exact same user group save for the 120mm fan in the GameXStream versus the 80mm fan in the ProXStream. True, the 12v output specs are different between the two with the GameXStream 1010w being billed as 66/75A and the ProXStream 1000w being billed as 70A, but with the GameXStream not being able to achieve either figure in our testing that specification is moot.
Given the current 1000 watt OCZ line up, it should have just one product in the 1000w range rather than two and that one product is certainly not the GameXStream in its current form. The ProXStream on the other hand was everything the GameXStream should have been though much louder. Priced at $269.99 after MIR in e-tail the ProXStream 1000w is certainly on the less expensive end of 1000w power supplies, meets its advertised specifications, and is well built making it a good value if users can live the noise the unit makes.