Today we take a look at the OCZ EvoStream 600W power supply. This power supply is modular and could be considered the "replacement" for the discontinued, Topower built "ModStream."
With the GameXstream being based on the FSP Epsilon, I would have figured OCZ would just slap a modular interface on the GameXstream and call it the next ModStream. Instead, OCZ took a ground floor approach and used yet another OEM: 3Y Power.
3Y Power is known primarily for their server power supply units; power supplies to fit in 1U and 2U chassis or redundant units. The 3Y power supplies tend to be built for 24/7 use, built to withstand higher temperatures and have a longer MTBF.
These sound like great qualities to have in a power supply. Is an OCZ branded 3Y Power really any different?
The OCZ box is consistent with other OCZ product boxes. There's lots of product shots, details about the product, cable count, etc.
The cables are all kept in a separate box placed on top of the power supply.
As we open the cable box, we can see all of our modular cables. They are braided stainless steel with a UV reactive blue jacket. The ends are all a translucent white, except for the SATA ends.
With the EvoStream out of the box, we can see that it's cooled by a single 80MM fan. When the PSU is running, a blue light emits from the fan. There is no 115V/230V selector switch because this unit handles the full range of input voltages.
The EvoStream is completely modular, with no fixed cables what so ever.
Above, we can see the modular interface. On the top row, going from left to right, we have the main 24-pin ATX12V connector, the 8-pin EPS12V connector, two PCI-e connectors and two 6-pin connectors that look like PCI-e connectors, but are actually for the SATA cables.
The bottom row has four peripheral Molex connectors.
Below is a count of the cables...
Type of connector:
2 x 2 12V connectors
2 x 3 PCIe
8-pin Xeon/EPS connector
6-pin Xeon/AUX connector
5.25" Drive connectors
3.5" Drive connectors
SATA Drive power connectors
Fan only connectors (thermostatically controlled 12V only)
* The 8-pin EPS+12V split in two, creating the 4-pin P4 connector.
The 24-pin can be split into a 20-pin ATX and the 8-pin EPS12V can be split into a 4-pin ATX12V. But the extra pins still remain attached to the connector that interfaces with the power supply. So although you can disconnect and move the extra pins from these cables away from the connectors on the motherboard, you can not remove them completely and must tuck the extra cable away above the PSU if you're looking for a neat and tidy appearance.
Figuring out the rails proved to involve more than simply looking in the manual. The manual states that +12V1 provides power to the CPU via the 4-pin/8-pin, +12V2 provides +12V to the main ATX connector (the 20+4) and the peripheral connectors, and +12V3 provides power to the PCI-e connectors. There's no mention of what the +12V4 is for.
Through taking the PSU apart and going through some trial and error, I found that +12V1 and +12V2 were correct, but that each of the PCI-e connectors are on their own +12V rail: +12V3 and +12V4. This makes the EvoStream 600W good for some high end SLI or Crossfire (probably up to X1900XTX or up to 7800/7900GTX.)
OCZ EvoStream 600W
Max Combined Watts
With only 40A on the combined 12V rails, I hesitate to say that the PSU will support a higher end video card in SLI or Crossfire when considering multiple hard drives or a PSU with high power consumption. But with PCI-e connectors with their own dedicated rail, I believe it's safe to say there won't be any "mysterious shut downs" because your GPU overloaded the +12V rail it's powered from.
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