OCZ ProXStream 1kw OCZ1000PXS ATX PSU
Internals & Cables
Having been extremely impressed with OCZ's GameXStream units in the past I was willing to bet money on the ProXStream being a slightly upgraded version of their 850w model. To me this would have made perfect sense as the GameXStream was a very stable, quiet and efficient PSU. However, let's take a look inside the ProXStream to find out exactly what is behind its 1000w of power.
Much to my surprise the ProXStream couldn't have been more different internally to their highly awarded GameXStream series. As you can see from the images above, the ProXStream makes use of a two level PCB and is actually manufacturered by the same company that produced the EvoStream 600w
Without a doubt the ProXStream is one fully packed PSU. So much so that I found it near impossible to remove the upper PCB to get some good pictures of what was contained underneath. More to the point, OCZ's choice of a single 80mm fan is slightly worrying as the fan is positioned on the left-hand side, meaning components on the other side of the unit will see very little airflow.
The ProXStream has several adjustable potentiometers (pots) on the upper PCB that are often responsible for fine-tuning the output voltages of the unit. However, a layer of glue as been applied to the pots to prevent them from being tampered with.
As previously mentioned, the unit is cooled by a single 80mm fan manufactured by Protechnic Electric. Unfortunately I was unable to find any definite specifications for this fan and can only assume that it is similar in performance to the MGT8012YB model used in the EvoStream (31.9dbA @ 2400rpm).Cables & Connectors
All cables on the ProXStream are finished in black sleeving with the excepton of the PCI-E connectors which are easily identifiable in red. All molex connectors feature the 'easy grip' design that makes removal of the connectors from devices easier.
It's good to see that OCZ have decided to sleeve all cables right to the tip just like on their GameXStream
series. Many manufacturers only sleeve some of the cables, or sleeve up to the first connector on every cable. The sleeving job is professional with cable ties holding the sleeving in place, and heat shrink keeping everything neat and tidy.
The ATX connector on the ProXStream is native 24-pin. However, as you can see above, a small block of 4 connectors can be broken off to switch the connector to 20-pin, and thus make it compatible with older motherboards. As many motherboards still make use of the P4-12v 4-Pin connector, OCZ have chosen to include two separate cables for P4-12v (4-pin) and EPS12v (8-pin) standards.
Unlike the recently reviewed 1kw Giant Reactor
from NorthQ, OCZ have decided to use 4 seperate cables for the PCI-E connectors (rather than 2 cables with 2 connectors). This should provide slightly better voltage ouput to the cards when used in Quad-SLI mode.
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