Search found 104 matches

by Oleg Artamonov
Fri Feb 01, 2008 12:10 am
Forum: Power Supplies
Topic: Active PFC Power Supply Unit and APC UPS compatibility
Replies: 7
Views: 4582

ksipsi wrote:Is this normal or is the sign of something bad happening ?
Normal.
by Oleg Artamonov
Thu Jan 31, 2008 9:56 am
Forum: Power Supplies
Topic: Active PFC Power Supply Unit and APC UPS compatibility
Replies: 7
Views: 4582

I've seen the rumours myself too and did a lot of digging to find out if I would have problems myself, but in the end I could not find anything conclusive, and just went ahead with the purchases. Not sure if I got lucky or not, but it works. Corsair 620HX: " I checked the PSU out with an APC SmartU...
by Oleg Artamonov
Thu Jan 31, 2008 1:09 am
Forum: Power Supplies
Topic: Active PFC Power Supply Unit and APC UPS compatibility
Replies: 7
Views: 4582

Re: Active PFC Power Supply Unit and APC UPS compatiibility

ksipsi wrote:I have dual PSU configuration in my system, one is active PFC (Fortron FSP Epsilon 700W) and one that it is not so obviously I am concerned about the Fortron.
Some A-PFC PSUs are incompatible with line-interactive UPSes, but Epsilon works fine.
by Oleg Artamonov
Thu Dec 13, 2007 2:02 am
Forum: Power Supplies
Topic: Fortron FSP400-60GLN not as good as before
Replies: 1
Views: 1370

...and right now we have in stock FSP400-60GLN without any SATA connectors at all.
I wonder if there's anything else different "under the hood?"
No, except that they can use different fans (Yate Loon / Protechnic / sometimes Adda).
by Oleg Artamonov
Wed Dec 12, 2007 2:17 am
Forum: SPCR Article Discussion
Topic: Samsung SyncMaster 20XL LED-backlight monitor
Replies: 14
Views: 11553

No mention of fan.... is it safe to assume it has no fan? 2407WFP-HC has no fan. And it hasn't LED backlight -- only improved CCFLs. 2407WFP-HC is a high-end home/office monitor while XL20 aimed at color-critical applications (prepress, color correction and retouching, et cetera) and should be comp...
by Oleg Artamonov
Fri Nov 16, 2007 2:23 am
Forum: Power Supplies
Topic: Antec Quattro TPQ-850 FAN
Replies: 3
Views: 2858

Should I try to adjust it?
No.
It's not fan controller, it's 12V rail current limit adjust: 2VR2 -> 12V2, 2VR3 -> 12V3 and 2VR4 -> 12V4.
by Oleg Artamonov
Wed Nov 14, 2007 11:09 pm
Forum: Power Supplies
Topic: Corsair 1000W PSU
Replies: 23
Views: 8154

Oklahoma Wolf wrote:The ripple specs on that one are insane... I wonder if CWT isn't pushing that platform a bit too far.
Ripple under full load
Cross-loading graph

Ripple is almost ok, but voltage stability is too bad, and 1200 W model (based on the same design) is even worse.
by Oleg Artamonov
Thu Oct 18, 2007 1:09 am
Forum: Power Supplies
Topic: Corsair 1000W PSU
Replies: 23
Views: 8154

Torajirou wrote:Good news for the numerous guys who run a Dual Quad-Core Extreme with Quad SLI and 6 hard drives ^^
Only dual?.. Only quad?.. Only 6?..

Enermax Galaxy DXX box says: Quad quad core CPUs, five GPUs and 24 hard drives!

P.S. And right now I'm testing Thermaltake 1500W...
by Oleg Artamonov
Sun Oct 07, 2007 11:22 pm
Forum: Power Supplies
Topic: PCP&C 750w in a P182?
Replies: 9
Views: 2885

andyb wrote:Also, that graph only says "rear" fan, how many does it have and how fast do the others go.???
Only one.
Image
by Oleg Artamonov
Sun Oct 07, 2007 2:08 am
Forum: Power Supplies
Topic: PCP&C 750w in a P182?
Replies: 9
Views: 2885

hi Oleg, the picture isn't displaying for me, can you sum up the results? Relatively quiet at loads up to 500 W, but quickly becomes loud (very loud!) at higher loads. Since I test all PSUs at room temperature (22C), in real PC (temperature inside the case is about 30...35C) threshold of loudness m...
by Oleg Artamonov
Sat Oct 06, 2007 11:34 am
Forum: Power Supplies
Topic: PCP&C 750w in a P182?
Replies: 9
Views: 2885

EsaT wrote:That 80mm fan is going to do lot of RPMs at higher loads
Image
by Oleg Artamonov
Fri Aug 10, 2007 12:58 am
Forum: Power Supplies
Topic: Chieftec GPS-350EB-101A
Replies: 4
Views: 4293

I've tested GPS-350EB-100A. Yate Loon D12SH-12 fan, less than 900 RPM up to 250 W loading:

Image

Image
by Oleg Artamonov
Tue Aug 07, 2007 11:45 pm
Forum: Power Supplies
Topic: Any practical benefit in owning PFC power supply?
Replies: 14
Views: 3658

yes, but a PSU is not just a rectifier. are you telling me the removal of the APFC would increase the efficiency of say, a Seasonic S12, by 4% over its entire range? Efficiency of the high-voltage side of the PSU itself would be lower without A-PFC because of lower inverter input voltage (without A...
by Oleg Artamonov
Thu May 31, 2007 3:09 pm
Forum: Power Supplies
Topic: 1000W power supplies
Replies: 22
Views: 11691

from the aforementioned testing on such a loaded system at Be Hardware http://www.behardware.com/articles/670-4/pc-s-actual-power-consumption.html "The power source actually supplies 567.6 watts, of which 85.3% are on the +12V, efficiency being 82.6%. So this configuration justifies the purchase of...
by Oleg Artamonov
Sun May 06, 2007 5:58 am
Forum: Power Supplies
Topic: Interesting review over at xbitlabs.
Replies: 14
Views: 5477

Ackelind wrote:Does anyone know if this is only true for the 8800-series or if it is true for the whole 8X00 series?
http://www.xbitlabs.com/articles/video/ ... gts_7.html
by Oleg Artamonov
Sat May 05, 2007 12:14 pm
Forum: Power Supplies
Topic: 8800GTX SLI system with Phantom 500
Replies: 23
Views: 8358

reyn116 wrote:where you get that from?
http://www.nvidia.com/object/slizone_howtobuild_2.html

"Minimum of 500-600W Power Supply with a minimum of +12V @ 30A for all PC components".
by Oleg Artamonov
Sat May 05, 2007 9:25 am
Forum: Power Supplies
Topic: 8800GTX SLI system with Phantom 500
Replies: 23
Views: 8358

Re: 8800GTX SLI system with Phantom 500

Phantom 500 has two +12V rails: 12V2 powers CPU (both 4-pin and 8-pin connectors) and 12V1 powers all other components. So, without PSU modification, only 12V1 rail is available to videocard. It has 17A limit, while every single GF8800GTX require about 11 A => 2*GF8800GTX = 22 A > 17 A. If you are f...
by Oleg Artamonov
Tue Apr 24, 2007 1:03 pm
Forum: Power Supplies
Topic: New "OCZ" stealth PSU.
Replies: 11
Views: 4655

Re: New "OCZ" stealth PSU.

gforcefan wrote:Wonder who makes it?
I'm not sure, but I think it's FSP with quality fans. Like Zalman ZM460B-APS and ZM600-HP — FSP electronics with quiet Minebea fans.
by Oleg Artamonov
Sun Apr 22, 2007 11:09 am
Forum: Power Supplies
Topic: True power consumption?
Replies: 12
Views: 4031

bartoc wrote:one worrying part is that the card requires 26A on the 12V rails on paper and that my seasonic 380 has only 25.
8800GTS itself needs less than 9 A.
by Oleg Artamonov
Sun Apr 22, 2007 2:54 am
Forum: Power Supplies
Topic: True power consumption?
Replies: 12
Views: 4031

Re: True power consumption?

bartoc wrote:How far off am I with my speculations?
Core 2 Extreme X6800 + Foxconn 8800GTX + 2xSATA HDDs + 1xSAS 15k HDD = 280 W (3DMark'06).
by Oleg Artamonov
Thu Apr 19, 2007 11:23 am
Forum: Power Supplies
Topic: Linear PSU?
Replies: 3
Views: 1746

EV10 wrote:So it shouldn't be bad
About 50%, may be less. ;)
by Oleg Artamonov
Sat Mar 31, 2007 2:39 pm
Forum: Power Supplies
Topic: Do I need a new PSU for a 8800GTX SLI setp?
Replies: 25
Views: 15597

8800GTX alone = 132W full load, 70W idle. 1) Core 2 Extreme Q6700 (Kentsfield) @ 3.5GHz, ASUS Striker Extreme, 4*512MB DDR2-800, 2*GF8800GTX, 2*WD1500AHFD -- 442W DC (533W AC with 83% PSU efficiency -- Tagan TG1100) under full load (Stress Prime 2004 + 3DMark'06). 2) AMD "4x4" 2*Athlon64 FX-74 @ 3.0...
by Oleg Artamonov
Sun Mar 18, 2007 9:26 am
Forum: Power Supplies
Topic: 300-350W PSUs
Replies: 5
Views: 2887

Re: 300-350W PSUs

Puffi wrote:Nexus Silent Power NX-3000 300W
Zalman ZM360B-APS 360W
Nexus NX-9003 SFB 350W
All three models are made by FSP Group, but ZM360B-APS is based on newer model (FSP350-60GLN) and should be quieter than others.
by Oleg Artamonov
Sun Mar 18, 2007 5:59 am
Forum: Power Supplies
Topic: Antec 380sp voltage selector?
Replies: 3
Views: 2003

Re: Antec 380sp voltage selector?

I live in the UK on 220v, but she's moving to Australia soon (not sure what voltage they use). I thought it would be fine as PSU's usually have a voltage selector - however I cant see one on the Antec! SP = SmartPower? They should have voltage selector switch, 115/230V (actually it means 90...130V ...
by Oleg Artamonov
Fri Mar 16, 2007 5:31 am
Forum: Power Supplies
Topic: Design me a single 12v output PSU
Replies: 11
Views: 3870

Aris wrote:i researched up a bit. it would have to be a linear PSU, not a switching
300W linear PSU? 10 kg weight and 50% efficiency?

Are you joking?..
by Oleg Artamonov
Thu Mar 08, 2007 2:08 am
Forum: Power Supplies
Topic: ColdWatt
Replies: 11
Views: 4136

But for PC power supplies, I'm not sure how many use DSP No one. I have a 200w Mitac out of a small file server that uses an Infineon digital ASIC There's no digital Infineon PWM control ICes . They all are analog. It could take anywhere from 90v to 260v AC without a switch Which means that PSU has...
by Oleg Artamonov
Thu Mar 08, 2007 2:07 am
Forum: Power Supplies
Topic: ColdWatt
Replies: 11
Views: 4136

star882 wrote:But for PC power supplies, I'm not sure how many use DSP
No one.
I have a 200w Mitac out of a small file server that uses an Infineon digital ASIC
There's no digital Infineon PWM control ICes. They all are analog.
by Oleg Artamonov
Wed Mar 07, 2007 5:06 pm
Forum: Power Supplies
Topic: ColdWatt
Replies: 11
Views: 4136

Now, there are some power supplies that are "mostly analog". That implies that the there's a little bit of digital circuitry (often just from the comparator to the power MOSFET) to improve efficiency. (A LM393 along with a power MOSFET, a fast recovery rectifier, and inductor, and a few resistors a...