The HIVE-650 from Rosewill offers a single
+12V rail that delivers up to 46A and a maximum of 552 watts to your computer’s
+12V hardware. We also found this particular model available for $69.99 online
at the time of this writing, which is quite a value when you consider that it’s
capable of powering two midrange graphics cards or one high-end card via its
two 6+2-pin PCI-E cables. The partially modular HIVE also features a 135mm PWM
fan that helps to reduce the noise generated by the PSU.
HIVE-650:
$99.99/ Rosewill, www.rosewill.com
Rosewill hardwires the 20+4-pin main power
and 4+4-pin +12V ATX power connectors. The two modular PCI-E cables both
feature a 6+2- pin connector. There are two sets of SATA cables, each with four
SATA connectors, as well as two sets of Molex cables, each with two Molex
connectors and one floppy power connector. All of the cables feature mesh
sleeves to keep the cables protected. When including cable bend, the HIVE-650
is a mere 7.3 inches long.
Besides the 46A +12V rail, Rosewill
provides 22A apiece for both the +5V and +3.3V rails, which can deliver a
combined maximum of 130 watts. The HIVE-650 meets the 80 PLUS Bronze
certification and offers an average efficiency of 82% and a peak efficiency of
87%. For maximum safety, you’ll find built-in protections against over temperature,
overcurrent, overvoltage, and overpower, as well as undervoltage and short
circuits. Rosewill offers a three-year warranty for HIVE-650 and indicates that
the unit should deliver 650 watts continuously at up to 40 C.
We only benchmarked the HIVE- 650 with one
of our test system’s ZOTAC GeForce GTX 580s, as it took both PCI-E cables to
power it. The PSU delivered a maximum wattage of 401W and a power factor of
.965. At peak load, it hit 117.4 volts and 3.56 amps during testing.
If you’re looking to spend a minimal amount
on a power supply, Rosewill HIVE-650 is a smart option. It offers built-in
safety against power fluctuations and provides the necessary connectors to
handle any basic system build. The inclusion of a quiet, PWM fan also makes it
a smart choice for those who want to minimize noise in their PC.
Benchmark Results
One GeForce GTX 580
§
Maximum Wattage: 401
§
Power Factor: 0.965
§
Volts: 117.4
§
Amps: 3.56
Specifications
§
Price: $99.99
§
12V rails: 1
§
+12V max (A): 46A
§
+5V max (A): 22A
§
+3.3V max: 22A
§
Efficiency rating (as advertised): 87%
§
Fan: 135mm
§
PCI-E: 2 (6+2-pin)
§
Main 12V: 20+4-pin
§
8-pin EPS 12V: 1 (4+4-pin)
§
4-pin 12V: 0
§
SATA: 8
§
4-pin Molex: 4
§
Floppy: 2
§
Warranty: 3 years
Fractal Design Integra R2 750W
The Integra R2 750W is a power supply that
supports two high-end graphics cards and is a mere 6.5 inches long, including
cable bend. The small size makes it ideal for power users using small cases, as
well as those interested in a short power supply that will allow space to
install an extra fan on the top or bottom of the case. The Integra R2 750W also
has a contemporary look with its rounded edges. The exterior offers a black
paint with a smooth finish complemented by white lettering and a white, 120mm
cooling fan.
All of the Integra R2 750W cables are
hardwired to the unit. Fractal Design provides you with a variety of connectors
to support midrange and most high-end builds. You’ll find a 20+4-pin main
power, one 4+4-pin +12V ATX connector, four 6+2- pin PCI-E connectors, six SATA
connectors, two Molex connectors, and one FDD connector. The cable wires
feature thick mesh sleeves that will protect the power wires from damage.
Fractal Design notes that the Integra R2 comes with a 4+4-pin +12V cable
measuring 25.6 inches long, ideal for cases with the PSU located at the bottom
of the chassis, where you’ll need a long cable to reach the CPU power at the
top of the motherboard.
The
Integra R2 750W
The Integra R2 750W is built with two 30A
+12V rails that delivers a combined output of 672 watts. The +3.3V rail can
handle up to 24A, and the +5V rail supports up to 20A. The combined output of
the +3.3V and +5V is 150 watts. Fractal Design indicates that the Integra R2
750W meets the 80 PLUS Bronze standard, and the 80 PLUS website lists its
maximum efficiency of 86.18%. In terms of power protection, the Integra R2 750W
offers overpower, overvoltage, short circuit, undervoltage, and overcurrent.
This power supply displayed an excellent
power factor of .985 when we tested it with two ZOTAC GeForce GTX 580s in SLI.
We also saw a maximum wattage of 666W, a maximum voltage of 117.8V, and a
maximum amperage of 5.8A. With one GPU, the Integra produced a maximum wattage
of 445W with a power factor of .976, as well as maximums of 118.4V and 3.85A.
The compact design and high power factor under load make this power supply a
good choice for builders with a small form factor case. The Integra 750W a
smart choice for enthusiasts who don’t require a high-wattage power supply.
Benchmark Results
Two GeForce GTX 580s
§
Maximum Wattage: 666
§
Power Factor: 0.985
§
Volts: 117.8
§
Amps: 5.8
Specifications
§
Price: $79.99
§
12V rails: 2
§
+12V max (A): 30A each
§
+5V max (A): 24A
§
+3.3V max: 20A
§
Efficiency rating (as advertised): 86%
§
Fan: 120mm
§
PCI-E: 4 (6+2-pin)
§
Main 12V: 20+4-pin
§
8-pin EPS 12V: 1 (4+4-pin)
§
4-pin 12V: 0
§
SATA: 6
§
4-pin Molex: 2
§
Floppy: 1
§
Warranty: 3 years
Logisys AT750BK
This affordable power supply can power two
midrange graphics cards via its two +12V PCI-E cables (one 8-pin and one
6-pin), and its 62A +12V rail gives it the capability to handle one high-end
graphics card. Logisys didn’t ignore efficiency, either, as its peak efficiency
at 50% load is 88.7% good enough for the 80 PLUS Bronze certification.
Logisys sleeves all of the cable in black
mesh. The cables are hardwired to the unit. In all, you’ll find a 20+4- pin
main power, one 4+4-pin +12V ATX; one 6+2-pin PCI-E; one 6-pin PCI-E; two SATA
cables with three connectors apiece, and two Molex cables with three connectors
apiece. The variety of connectors should give you enough options to reliably
power many midrange builds.
Logisys
AT750BK: $79.99/ Logisys, www.elogisys.com
With the AT750BK, Logisys uses a wrinkle
black coating to create an attractive exterior. Inside the power supply, you’ll
find a 140mm ball bearing fan that offers quiet cooling of the interior parts.
To support your peripheral devices, the +5V and +3.3V rails both can handle up
to 24A of power, which combines to 200 watts of power. The unit itself,
including cable bend is a little over 7 inches long, which is handy for
builders that have limited space around the PSU opening in their case.
We tested the Logisys AT750BK with one
GeForce GTX 580 graphics card, and it delivered a maximum wattage of 402W and a
good power factor of .982. We also saw a maximum voltage of 117.4V and a
maximum amperage of 3.52A, both of which are similar to the other models in the
roundup. The Logisys AT750BK is a good fit for builders on a budget. The large,
quiet, 140mm fan is also makes this power supply a good choices for those
focusing on quiet computing in their build.
The Logisys AT750BK is a good fit for
builders on a budget.
Benchmark Results
One GeForce GTX 580
§
Maximum Wattage: 402
§
Power Factor: 0.982
§
Volts: 117.4
§
Amps: 3.52
Specifications
§
Price: $79.99
§
12V rails: 1
§
+12V max (A): 62A
§
+5V max (A): 24A
§
+3.3V max: 24A
§
Efficiency rating (as advertised): 89%
§
Fan: 140mm
§
PCI-E: 2 (1 6+2-pin, 1 6-pin)
§
Main 12V: 20+4-pin
§
8-pin EPS 12V: 1 (4+4-pin)
§
4-pin 12V: 0
§
SATA: 6
§
4-pin Molex: 4
·
Floppy: 1
·
Warranty: 1 year
Powerful Options
This extensive roundup covers a variety of
price points and features, so we’re sure there’s one that’s ideal for your
build. Some of the most impressive models, in terms of power factor, were
ENERMAX’s MAXREVO 1500W, Zalman’s ZM1250 Platinum, Fractal Design’s Integra R2 750W, and Logisys’ AT750BK. For quiet
computing, we liked Cooler Master’s Silent Pro 1000 Platinum 1000W and
Corsair’s HX850. All models held up well under our stress tests and easily fit
into our Corsair Graphite 600T case.
