Power Supply Roundup: 730W to 900W
by Christoph Katzer on November 22, 2007 3:00 AM EST- Posted in
- Cases/Cooling/PSUs
Hiper 4M880 and 5X880 - 880W
The second series of Hiper today comes with a different design and a different internal topology. The 5X includes eight USB ports and an additional port that can support up to 1A while the PC is off. This PSU also comes in a nice, shiny paintjob. Due to the USB ports on the back, the venting holes only occupy the upper section.
The 4M has no USB ports and a has normal black matte coating, but the space where the USB ports would have been located is still closed. Hiper started the idea of keeping the housing open with a mesh a long time ago. This idea has pros and cons since we might have increased problems with EMI and the airflow could also recycle back into the system. During our tests we couldn't answer the EMI question since we lack the proper equipment, but we might be able to help out with the venting issue since we didn't find any negative temperature results with the actual design.
Both units are the same inside and therefore we see the same data on the labels. The first two 12V rails are rated at 18A and the second two rails at 30A. The both 30A rails will be powering the graphics card PEG connectors, which makes sense.
Cables and Connectors
The cable harnesses look nice and sleek, and we see a slightly different harness output from the housing than we have seen before. Hiper doesn't have one big hole where all the cables are pressed through. Instead, the different harnesses are pressed in groups of two to three harnesses through five different openings. The benefit is that it's easier to access the different harnesses when you want to attach a new device since the connectors are not mixed.
The cables are quite short and especially the Molex connectors have a very short length. However, it's clever to make the graphics card connectors of different lengths since the cards always sit on top of each other. There are two harnesses for the graphics cards, each with one 8-pin and one 6-pin connector attached.
The inside of the Hiper unit looks very similar to a well-known manufacturer. We won't name names, as Hiper made many changes to the internal design. There are several smaller heatsinks inside; the secondary heatsink remains as a single unit, while the primary is made up of three smaller heatsinks that cool different components like rectifier bridges and diodes.
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engman - Wednesday, January 23, 2008 - link
Can you explain beter the Voltage Ripple and Noise graphs?I really cant get it! Where is the graph scale?
engman - Wednesday, January 23, 2008 - link
I was trying to find a good PSU and found this review.When you say: "The actual Power Supply Design Guide specifies that each +12V rail should not have any ripple over 120mV and the +3.3V and +5V rails should not have any ripple over ~50mV."
Means that each power rail should not go outside this interval:
11.88V < 12V < 12.12V 120mV
3.25V < 3.30V < 3.35V 50mV
4.95V < 5V < 5.05V 50mV
Correct?
How can 12.17V fall inside the specified range? "The 12V rails of the OCZ ModXStream tended to be high, but this is still acceptable as they fall inside the specified range."
4.75V is inside the specs? and 5.13?
"The 5V rails also remain within specs, but the last two units (OCZ and Amacrox) are very close to the lower boundary at 100% load."
So what are the exac boundaries, or the voltage interval for each power rail?
thanks
yelnatsch517 - Thursday, December 6, 2007 - link
I noticed the Cooler Master reviewed was the M850 ESBA modular version of the RS 850 EMBA. Seeing as how it is impossible to find that model in the US, I am wondering if the model reviewed was either a EU version or a new model Cooler Master is planning on introducing in the near future and also whether the internals of the US EMBA 850watt version are the same.jonnyGURU - Friday, December 14, 2007 - link
The Cooler Masters are identical. Cooler Master refrains from selling the modular version in the U.S. due to Ultra's patent on the modular interface and threats to sue. You CAN buy the Cooler Master modular here in the U.S. if you get it bundled with a case. I've seen it pre-installed in some Stacker units over at Newegg.stolennomenclature - Tuesday, December 4, 2007 - link
I know im getting old and the old brain isnt what it used to be, but did'nt i read somewhere about dwindling oil reserves, skyrocketing oil prices, depletion of the ozone layer, and the need to reduce energy counsumption and be the green movement? I even thought I saw a trend with cpu makers trying to lower energy counsmption of their cpu's.You would'nt think any of this stuff was real when you see the trend towards bigger fuel guzzling SUV's and now a article like this - why on earth do we need kilowatt power supplies for a PC!
If I was in government id have these things banned or else slap an enormous tax on them.
People need to wake up and smell the roses. Its obscene that a PC should need a power supply over 300 watts. Even thats extravagant.
jonnyGURU - Friday, December 14, 2007 - link
A PSU only puts out what's asked of it. So if you're PC only uses 300W, the PSU only puts out 300W. Really the only drawback here is that larger units typically cost more to buy, and neither you nor I are in the position to tell someone how to spend their money. ;)ShadowStryder - Monday, November 26, 2007 - link
Persoanally I like the new review layout.Toadster - Saturday, November 24, 2007 - link
850W of goodness for under $190http://www.newegg.com/Product/Product.aspx?Item=N8...">http://www.newegg.com/Product/Product.a...=N82E168...
recently was on sale for $119 A/R
HexiumVII - Friday, November 23, 2007 - link
Who manufactures the Antec 750?Christoph Katzer - Saturday, November 24, 2007 - link
The 850? Enhance.