echnically the unit is not wonderful and raises a few concerns. The ripple results are quite high, although it did fall inside industry tolerance guidelines. The +12V peak result is around 90mV which is higher than we would like to see. Placing additional strain on this power supply in an overclocked state may cause problems long term. I wouldn’t be happy using it in any of my own gaming systems if I was being honest.
When rating this power supply we need to factor in every single negative and plus point then, look at cost. The asking price of £32.99 inc vat is one of the lowest we have seen from a reputable company, and it is difficult to understand how OCZ are making any profit at all, factoring in dealer margins.
The CoreXStream 500W power supply is certainly a no frills design. There are no modular cables, the paint and finish of the unit are clearly set at a very tight price point. The hardwired cables are not sleeved and there are only a 6 pin and a 6+2 pin PCI connector. Technically the unit is borderline to what we would class as acceptable, displaying below average load regulation, high ripple characteristics and poor overall efficiency.
Overall its one of the worst if not the worst PSU OCZ still sells
Next up is the Mod XStream Pro
No its not the worst PSU in world its not even the worst OCZ PSU but that does not mean its good
This series is bit confusing as some say its a HighPower made series and other says its based on the FSP Epsilon
Externally the OCZ 700W ModXStream Pro is a fairly subdued semi-modular design that looks good. The unit has a nice finish, well sleeved cables, good quality modular cables, and a large overhead fan. However, once we open the unit we find that OCZ 700W ModXStream Pro looks very much like a cheap group regulated unit. This is further compounded by the fact that the unit has some questionable component selections in the mystery "Rec" capacitors. Good capacitors only add slightly to the total cost of a unit so why even something along the lines of Samxon or at the very least Teapo was excluded from this build is bewildering. Further, the unit only features a 3 year warranty and with questionable capacitors this is hardly reassuring. Also related here is the unit’s "documentation." The documentation that came with the unit is simply a waste of time. This fact is punctuated by the power distribution table at the back of the manual was never actually finished by whomever was annotating it. The only upside to all of this is most of the information about the unit is printed on the packaging, but still sans a correct power distribution table as these are genuinely useful. They are especially useful when units do not follow the ATX12v specification or EPS specification for 12v power distribution such as this unit. http://www.hardocp.com/article/2008/11/12/ocz_700w_modxstream_pro_power_supply/#.UmfDvhBlKcs