It appears you have not yet registered with our community. To register please click here...

 
Go Back [M] > Madshrimps > Articles & Howto's
Silverstone Zeus ST85ZF 850W Power Supply Review Silverstone Zeus ST85ZF 850W Power Supply Review
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read


Silverstone Zeus ST85ZF 850W Power Supply Review
Reply
 
Thread Tools
Old 11th January 2007, 17:38   #1
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 78,614
jmke has disabled reputation
Default Silverstone Zeus ST85ZF 850W Power Supply Review

Silverstone Technology Ltd. is a relative newcomer to the PC-world having been founded in 2003. As a manufacturer of power supplies, CPU-coolers and enclosures they aggressively sought to compete with the very best in these product categories. Over the last year they have come into their own with the release of the well received Temjin TJ06 aluminum case and Zeus line of PSUs. Silverstone is now a relatively familiar name and we have the flagship of the Zeus series, the ST85ZF.

http://www.madshrimps.be/gotoartik.php?articID=521
__________________
jmke is offline   Reply With Quote
Old 11th January 2007, 19:11   #2
[M] Reviewer
 
Sidney's Avatar
 
Join Date: Mar 2004
Posts: 15,739
Sidney Freshly Registered
Default

Quote:
From Hardware Secrets; Why 99% of Power Supply Reviews Are Wrong. I'm sure that article will have a substantial impact on most PSU reviews you have read.
I've read the article the day it came out, and found the statement rather inaccurate. A Chroma station, measuring amp and or wattage or voltage by replicating the manufacturer QC station process, and even taking IQC (incoming QC on purchased components) are for the engineering professional in electrical field. When I test drive a car, I only need to know how it responses, sitting/driving position, steering inputs, acceleration (if it is important to me), gas mileage (if it is labled for good mileage consumption), price point and the "look", etc, etc ...... One thing I don't mind not knowing is all the engine, chassis, suspension, gear-box design and specifications (although some of us do want to know because we are very good at it).

99% of reviews are wrong sounded is a bit odd. It depends on the type of audience; 99% are electrical engineers (by formal training or otherwise) and PC enthusiasts; leaving 1% reader who asks that give me a power supply that fits well in my case and support my system without over kill in paying for something I don't need is a strange statement.

By the way, the article serves me well
__________________
lazyman

Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II
Sidney is offline   Reply With Quote
Old 19th January 2007, 19:48   #3
EsaT
 
Posts: n/a
Default

I just checked article more closely and I think you are wrong about 12V rails being really separate.

Basing to these pics looks much like at least 1 and 2 are "jumpered" (those thick metal jumpers) from same trace.
And basing to bottom side of PCB also 3 and 4 are propably similarly connected.



In fact looks like all 12V rails are directly connected to each other after those "jumpers", PCB traces seem to connect to each others on left edge of pic.


Quote:
Originally Posted by lazyman View Post
When I test drive a car, I only need to know how it responses...

99% of reviews are wrong sounded is a bit odd.
So you test drive car using just gear 1?
Or more precisely without any driving and seeing just that engine works at idle?
  Reply With Quote
Old 19th January 2007, 19:55   #4
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 78,614
jmke has disabled reputation
Default

rather testing driving the car on race roads, normal roads, traffic jams, long distances, short distances, parking, booth space, easy maintenance, wheel removal kit, seat arrangements, mirror placement, etc etc

you don't need to know how the engine works to make an evaluation of how the car drives

knowing how the engine works can help to explain why the car drives as it does, but it's not a necessary ingredient to make a good evaluation of the car, of course, cars and PSU are not quite a like, and comparo here might not be appropriate
__________________
jmke is offline   Reply With Quote
Old 19th January 2007, 20:16   #5
[M] Reviewer
 
Sidney's Avatar
 
Join Date: Mar 2004
Posts: 15,739
Sidney Freshly Registered
Default

If it is automatic trans; most people don't just put it in "D"; drive away
If it is humming along quietly, most drivers don't care how it works
I am referring to majority of drivers.
__________________
lazyman

Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II
Sidney is offline   Reply With Quote
Old 19th January 2007, 20:34   #6
EsaT
 
Posts: n/a
Default

Quote:
Originally Posted by lazyman View Post
I am referring to majority of drivers.
But most people propably wouldn't trust test drive of car done by using only gear 1, that's what that majority of PSU reviews with barely 1/3 of load specified in ads of PSU are...

On the other hand this specie might have once again digged deeper than previously reached level of rock bottom.
  Reply With Quote
Old 19th January 2007, 23:03   #7
[M] Reviewer
 
Sidney's Avatar
 
Join Date: Mar 2004
Posts: 15,739
Sidney Freshly Registered
Default

You don't buy a car just by reading test report I hope
__________________
lazyman

Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II
Sidney is offline   Reply With Quote
Old 19th January 2007, 23:28   #8
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 78,614
jmke has disabled reputation
Default

it does help make the decision a lot, testing driving PSU is hard
__________________
jmke is offline   Reply With Quote
Old 20th January 2007, 01:58   #9
[M] Reviewer
 
Sidney's Avatar
 
Join Date: Mar 2004
Posts: 15,739
Sidney Freshly Registered
Default

My initial post was related to the 99% reviews being wrong. Here is my take-
1) A car is rated to have 500HP rear or front wheel power; top speed 180MPH. There will be manufacturing variables, and a dyno test may or may not prove 100% accurate. Now comes the 180mph test, again there are many variables plus having a track to do the test against normal traffic. A test drive reviewed at 120 MPH without the track to top out is not 100% wrong. It merely ran out of track on this part of the review.
2) Since PSU is not regulated by any government (unlike cars) rating except UL for safety. It is highly dependable on the manufacturer's ablility to hold certain professional standards such as ISO which I strongly recommend consumers to look into.
3) The use of any test equipment not regularly certified does not mean much to me.

Lastly, PSU tested even at 100% spec on bench using Chroma station at a given time does not gurantee real life performance against weather condition and irregular or variable input voltage (from the wall or motherboard). Look for solid and reputable manufacturer or name brand; reading test reports include cable length, flexibility, size to fit most or just certain cases, and noise level; to say 99% of reviews are wrong because they might not test the max output is "odd".

We could go another step to look into component specs +/- 3%? Or requesting BOM (bills of material) and supplier listings?
__________________
lazyman

Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II
Sidney is offline   Reply With Quote
Old 25th January 2007, 16:14   #10
Liquid3D
 
Posts: n/a
Default

I actually re-evaluatewd that article myself. I also found several points which were inconsistent. I wasn't trying so much to discredit our or any other methodologies as I was trying to challange those sites whom feel their tests are beyond reproach. Many of the top test sites with the very best hardware use voltage regulation as a standard test.

When you think of it, since all PSU's have voltage regulation it's not as if their testing the PSU's "power reserve" their actually measuring (if it's possible) the unit's ability to compensate for Rail fluctuation. Without "true" independent voltage regulation fluctuation will be regulated, often at the xpense of theo others Rails. Therefore measuring rail stability may only show one or two phenomenon: First - time it takes to compensate (get the rail back to "spec". Second - wether or not PSU is able to compensate without any affecting other rails or circuits in the design. The paper states the latter is almost impossible because one would need to monitor all rails simultaneously.

in my humble opinion it's not so much the rail in question is immedately regulated, but more importantly this regulation is proprietary as is the current source behind it.

For exmaple if 12V3 dips and it is compensated for, does this now effect 12V1, 12V2 and 12V4? While independent voltage regulation may avoid any impact on other rails, much more important to me is where that power comes from?

The jumpers you refer do not seem to connect any of the 12V rails on the face of it, but I'll follow the traces to be sure if you like?
Attached Thumbnails
silverstone-zeus-st85zf-850w-power-supply-review-jumpersst85zf.jpg

Last edited by Liquid3D : 25th January 2007 at 16:38.
  Reply With Quote
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Silverstone Strider Plus 850W Power Supply Review jmke WebNews 0 3rd June 2010 12:57
Silverstone Strider Plus 750W Modular Power Supply Review jmke WebNews 0 22nd March 2010 16:25
SilverStone Decathlon DA800 800W Modular Power Supply Review jmke WebNews 0 14th February 2008 11:02
Antec True Power Quattro 850W Power Supply Review Sidney WebNews 0 30th January 2008 19:04
Silverstone releases new 850W Modular Power Supply jmke WebNews 1 18th January 2007 13:01
SilverStone Zeus ST85ZF 850W Power Supply jmke WebNews 0 22nd August 2006 22:30
SilverStone Zeus ST56ZF 560 Watt Power Supply jmke WebNews 0 15th May 2006 23:22
SilverStone Zeus ST56ZF 560W Power Supply jmke WebNews 0 15th March 2006 20:29
SilverStone Zeus 650w power supply Sidney WebNews 0 26th September 2005 14:17
SilverStone Zeus ST-52F 520W Power Supply Sidney WebNews 1 15th January 2005 17:40

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


All times are GMT +1. The time now is 15:18.


Powered by vBulletin® - Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO