OCZ Technology ProXStream 1000w Power Supply
Author: Shawn Knight
Editor: Frank Stroupe
Date: 02-16-2007
Provided by: OCZ Technology
Discuss: View Comments

Installation of the ProXStream was no different from any other power supply. As you can see, the unit looks great in my test system (although the case I am using has seen better days). Specs for the test system include:

Intel Core 2 Duo E6600 @ 3.2 GHz
EVGA 680i SLI Motherboard
Two 8800 GTX cards in SLI configuration
2 Gb Corsair XMS PC2-6400 Memory
74 Gb Western Digital Raptor 10k RPM HDD
Lite-On Optical Drive
Two 120mm fans (one intake, one exhaust)

I would like to have used a much more powerful system to test this power supply, such as a quad-core CPU and/or a quad-GPU configuration, but truth be told, not every hardware review site gets all of these items for free from the manufacturers. We do the best we can with what we can afford... we are normal people just like you and unfortunately have a budget.

Anyway, on with testing. I used a digital multimeter to obtain voltage readings. Since most power supplies correct any fluctuation in the current to the rails before our multimeters would even notice, we're unable to monitor every output in real-time simultaneously. To record idle voltages, I simply let the system sit idle in Windows for 20 minutes. For load voltages, I ran Super Pi mod 1.5 XS 32M calculation, Winamp, AIM, and multiple FireFox windows, all while playing Need for Speed: Carbon on max graphics settings.. This combination of programs put a nice load on the system. For the 12v PCI-E rails, I tested each rail separately under idle and load and got the average of each. For the other 12v rails, I tested several connectors within the computer and got the average of those numbers. I feel this is better than testing each 12v rail and having a huge chart of results.

Usage, Findings and Conclusion

As the voltage readings show, this unit put out a very clean and stable supply of power to my *somewhat* high-end test system. The majority of voltages held even under both idle and load, while the 5v rail actually increased by .01v. As mentioned earlier, I would have loved to test this power supply with an even more powerful system but a lack of money prevents that heh. Even so, with my 8800 GTX SLI and a "mild" overclock on the dual-core processor, the ProXStream had absolutely no problem powering my system and produced the least amount of fluctuation from idle to load in any power supply that I have tested to date.

The ProXStream 1000 has many great things going for it, perhaps the biggest being the fact that the unit is no larger than a "standard" ATX power supply. Most 1000 watt systems are much longer and have several cooling fans. This will cause problems with optical drives when used in a standard ATX case. The ProXStream gets by with a single 80mm fan that was not audible over the rest of the fans in my test system. The mirror-like finish of the ProXStream looks fantastic and gives off a nice reflection. I liked that all of the cables were fully mesh-sleeved and the red mesh on the PCI-E cables looked great, but a modular cable system would have put the icing on the cake so to speak. Also notably missing on this power supply are 8-pin PCI-E 2.0 cables. Granted, the specifications for PCI-E 2.0 were just announced a month ago and currently nothing makes use of it...

As of writing, the ProXStream 1000w power supply is not NVIDIA SLI-certified, but there is a reason for that. The ProXStream has only been on the market for a short time and it takes a good bit of time for NVIDIA to complete their rigorous testing on power supplies, so it's more of a timing issue than anything else. Check the NVIDIA SLI-certification page and you will see that many of the power supplies listed there have been out for some time now.

So, is this power supply for you? Probably not. Unless you are running a quad-core CPU, quad-SLI or any mixture of extreme cooling (high end watercooling, thermal electric cooler (TEC), a power supply of this capacity will be overkill. But, should you be one of the rare few with an addiction for extreme computing / gaming / overclocking (and a well-stocked bank account) I would encourage you to give the OCZ ProXStream 1000w Power Supply a look. At a price tag of nearly $350 USD, your purchase comes backed by OCZ's 36-month PowerSwap Warranty program and a wealth of power at your disposal.

OCIA.net has awarded the OCZ ProXStream 1000w Power Supply our seal of approval.

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