The Rosewill Quark Series Power Supply Review (750W, 850W, 1000W, 1200W)
by E. Fylladitakis on January 13, 2016 9:00 AM EST- Posted in
- Cases/Cooling/PSUs
- Rosewill
- 80Plus Platinum
Cold Test Results
For the testing of PSUs, we are using high precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox and various other bits and parts. For a thorough explanation of our testing methodology and more details on our equipment, please refer to our How We Test PSUs - 2014 Pipeline post.
| Efficiency |
| Power Losses |
The 850W, 1000W and 1200W versions of the Quark do honor their 80Plus Platinum certification with ease, with the 850W showing a little higher overall efficiency than the other two models. The 850W version has an average efficiency of 93% within the nominal load range (20% to 100% of the unit's capacity), while the 1000W and 1200W versions both have an average efficiency of 92.6%. The largest differences occur when the units are heavily loaded, with the 850W version being more stable than the more powerful variations. On the other hand, the 750W version is the least efficient when heavily loaded, with the efficiency dropping down to 90.2% at full load. Still, the average efficiency of the 750W is high, with an average of 92.5% within the nominal load range.
| Intake & Exhaust Air Temperature |
| Heatsink Temperature |
In room temperature, all four of the Quark PSUs displayed the exact same thermal and acoustics behavior. The internal temperatures of every PSU increase very smoothly, almost linearly, with their magnitude being about the same for every unit at a specific load. Ultimately, the more powerful units appear to be warmer just because their maximum output is higher.
In terms of acoustics, the behavior of the cooling system appears to be an exact copy between all of the PSUs, tying the fan's speed only to the relative load of the unit as long as the temperature is low enough. The Quark PSUs are dead silent when lightly loaded, with their fans essentially speeding up after the load has surpassed 60% of the unit's capacity. Even when loaded to the maximum, the SPL is below 36 dB(A), which corresponds to a very soft humming noise.
| Sound Pressure Level |
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Sivar - Wednesday, January 13, 2016 - link
The Rosewill Silent Night is among the finest power supplies ever manufactured.Of course, it was manufactured by SuperFlower, the only company I'd put on par with Seasonic in terms of quality. You are probably referring to some other line of Rosewill.
Fanless and runs my 6-core i7, 970GTX, and five hard drives without the slightest voltage drop.
TheinsanegamerN - Wednesday, January 13, 2016 - link
Then not only are you missing out, you are also missing the point. Rosewill is not the one you should avoid, but rather, the OEM of the internals is the one to avoid. A lot of PSUs sold use one of several OEM models, and the ones used now are pretty good.cosmotic - Wednesday, January 13, 2016 - link
"Seasonic's infamous SS-1200XP3"Is there something wrong with the Seasonic? How is it infamous?
bigboxes - Wednesday, January 13, 2016 - link
Infamous is not an indicator of something bad. It just means that it's a noted product. That could be for it's stellar performance or simply what it's known for.bji - Wednesday, January 13, 2016 - link
You're wrong.infamous: well known for some bad quality or deed.
The author used the word incorrectly, but apparently a percentage of the readership won't know the difference so ... the downward spiral of the English language continues!
jbrizz - Wednesday, January 13, 2016 - link
It was known for being badass, baby.E.Fyll - Wednesday, January 13, 2016 - link
Oh, there is absolutely nothing wrong with the Seasonic model. The original word was "influential", I did not really felt that it was suitable and I replaced it during my second pass. Apparently, I messed up while editing the text by either not deleting the word completely and the auto-correct function completing the new word as "infamous" or by just subconsciously getting influenced by the "in" prefix of the original word. Anyhow, of course the correct word is "famous".Thank you for your notice, it has been fixed.
Oxford Guy - Friday, January 22, 2016 - link
Unlike their 1050 model which could be "heard from rooms away." Now that one was infamous.Voldenuit - Wednesday, January 13, 2016 - link
Who names a PSU 'Quark'?'Lepton' would make more sense; electrons have no quarks.
TheinsanegamerN - Wednesday, January 13, 2016 - link
I have the 1000 watt model, and it is a beautiful PSU, simple, powerful, and silent. The only issue is the cables are rediculously stiff, even in my full atx case, it took quite a bit of force to manipulate them down so they wouldnt butt against the case. No other model has ever had such stiff cables in my experience.