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OCZ ModStream 520W PSU
Author: JonnyGuru
Date Posted:06/04/2005 12:52.05
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Bottom Line:
OCZ started out as a performance memory company. When they came out with power supplies JonnyGuru was sceptical but at just over $100, it's probably the best power you can get for the money.
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Results and Conclusions
| OCZ ModStream 520W |
Zero Load |
Test One (367W) |
Test Two (302W) |
Test Three (430W) |
Full Load (620W) |
| 12V |
11.44 |
11.94 |
12.46 |
11.64 |
12.28 |
| 5V |
5.32 |
5.09 |
4.99 |
5.13 |
4.91 |
| 3.3V |
3.44 |
3.34 |
3.34 |
3.33 |
3.28 |
| Efficiency |
48% |
76% |
77% |
73% |
65% |
| Power Factor |
.53 |
.76 |
.77 |
.73 |
.65 |
Temperature under load = 16.7C. Peak temperature after power off = 48.8C.
Phenomenal! Of course, when your expectations are "520W" load
and you're given a 620W power supply (as per OCZ's own label,) how can
you be let down?
At 620W the temperatures, despite the ever-quiet 120MM fan, never went
over 18C. Sure, the efficiency dropped to 65%, but if you're squeezing
620W out of this power supply for long enough periods that would allow
a 65% efficiency to make a difference, then you're doing something with
your PC that you shouldn't! The voltage was stable during all tests. The efficiency was good
and the power factor was good for a power supply without active PFC.
Clearly, this power supply gets a 10 for performance. It just
can't get much better than this, and for just over $100, it's probably
the best power you can get for the money.
For features, the power supply has some downfalls. The modular
connectors have all of the ugliness of the Mad Dog or A.C. Ryan with
the ends of an Ultra X-Connect (no clips!) They had stainless steel
braiding and clear, UV reactive tubing over them making them stiff (although
they looked cool under UV light.) There wasn't many power connectors
(even IF you use SATA drives,) but at least is was quiet and STAYED quiet
even under a 620W load. All said, the power supply gets an 9
for features.
That means the total score for this power supply is 9.5 and
we have ourselves another SLCentral editor's choice! The PC Power
and Cooling Turbo Cool 510 and the Ultra X-Finity 600W are in good company.
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