Please report all spam threads, posts and suspicious members. We receive spam notifications and will take immediate action!
Page 1 of 4 123 ... LastLast
Results 1 to 10 of 34

Thread: EP45-UD3 power distribution opinions.




  1. #1
    kick's Avatar
    kick is offline Senior Member
    Join Date
    Feb 2009
    Location
    Europe,the wild wild west.
    Posts
    1,223

    Question EP45-UD3 power distribution opinions.

    System is as in my sig.
    Take it for granted that I wont be changing my psu,tho that would be the easiest solution.
    My q only concerns the 12v distribution.
    Im not worried about net posts that say the psu is a pos,its worked fine for me for 3 years.
    psu specs
    psu mechanics:
    After some investigation recently.
    The 12v1 rail supplies every component/output that needs 12v except the cpu
    The 12v2 rail supplies the atx 4/8 pin cpu connector (cpu only)

    The rails are seperate.ie the outputs originate from different points on the cb at least.

    the 12v rail amperage ratings are shown as 18a for either.
    Its slightly disturbing to see 12v1 rated as 15a in one listing on the spec sheet.
    That would mean a max 12v output of 180 w for everything except the cpu.

    New gx card has a theoretical max power consumption of 225w tho in practice it wont reach that.
    How high will it go.not sure but at maximum overclocks total test systems(from reviews) power consumption reaches around 400w.sli ones over 600w,but thas not relevant to me.

    The only psu test I know of that will stress both the gx card and cpu AND give ripple/noise + voltage readouts is from OCCT.

    Ive reduced my number of fans to increase the headroom on the gx side but i would like to have them back in.

    Normally the psu stays within limits but with hi overclock on gx and fans running full speed+ lots of heat, ripple/noise come close to the 5% limit on 12v output and v drops to 11.58v(also within limits but i feel I can get some unused power off the 12v2 rail).
    3.3v and 5v outputs are rock solid ,low noise/ripple.

    Im sure with a cpu overclock there is more than 95w going thru the 12v2 supply,but I estimate(from reviews again that its less than 140 even at 4ghz).

    Getting to the q soon ..
    =============================
    I want to pull some of the power off the 12v2 rail
    There are 2 options
    1.use the 12v2 power to power some of the system fans and add back in some of the ones taken out.
    2.Connect the 12v2 rail to the second 6pin pcie gx card input.the lower power draw one(furthest from the edge of the gx card).
    Yeh nvid recommends that both additional 6 pin connectors to gx cards come off the same rail but many psus use different rails for the 6 or 6+2 pin connectors if they have more than 1 gx connector.

    So which option would be best?
    Last edited by kick; 09-03-2010 at 06:28 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  2. #2
    Join Date
    May 2010
    Location
    -
    Posts
    110

    Default Re: EP45-UD3 power distribution opinions.

    No power supply that cheap can afford separate lines, you can pull all the 12v power from either 12v1 or 12v2, they are one. The cpu is around 100 watts priming, Gpu is 150 watts in games, the rest is around 50 watts tops.

  3. #3
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: EP45-UD3 power distribution opinions.

    I vote for option #3, where you buy an inexpensive 12 volt, 3 amp unit to power all your fans.

    I don't recall reading any psu reviews where the psu OCP (over current protection) was set at the max rated amperage for the 12 volt rails, it's often 10 - 20% higher than the maximum rating for each rail.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  4. #4
    kick's Avatar
    kick is offline Senior Member
    Join Date
    Feb 2009
    Location
    Europe,the wild wild west.
    Posts
    1,223

    Default Re: EP45-UD3 power distribution opinions.

    Hey PJ
    .no actually some of those links you posted,led me to reviews of psu's cutting out at the amperage limit on rails.
    Anyway Im probably "micturitioning against the prevailing airflow"
    Short of buying an ammeter and hooking it in to the cpu power socket ( I dont fancy the idea of a seperate 12v psu to fans lol option 3).
    Altho there are some "combine 2 crappy pc psu's" articles out there.

    Ill butcher some cables and connectors or wooh buy some( maybe even grab some vrm gx card heatsinks !) and try both options out and let this post sink into obscurity.
    8:15
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  5. #5
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: EP45-UD3 power distribution opinions.

    Just to be clear, my option #3 is to use a low amperage 12 volt "unit" that would power a printer, scanner or other peripherals.
    Many of these units only provide 1 amp. I have a 12 volt Canon unit that is about 4" x 2" x 2" and it only cost 99 cents at a thrift store.
    I wouldn't have any qualms using one of these units to provide 12 volts to my fans.

    Some cheapo power supplies don't implement OCP and will burn or explode when overloaded.
    Many middle to top tier units can sustain 10 - 20% over their rated power output and still meet ATX specifications for voltage regulation and noise/ripple limits.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  6. #6
    kick's Avatar
    kick is offline Senior Member
    Join Date
    Feb 2009
    Location
    Europe,the wild wild west.
    Posts
    1,223

    Default Re: EP45-UD3 power distribution opinions.

    yeh pj i understand.
    I just dont fancy having a seperate transformer's wires running around inside the pc .
    Ive no reason to suspect the psu of blowing up.
    The rail limitations are a concern . Im merely looking for opinions on using the excess power on 12v2 of which i feel there is more than 12v1.

    If the psu 12v output was classed as 33+ amp and well designed single rail. it wouldnt matter.
    Total (stated) power capacity is fine.Ill get some connections and self test and benchmark. To see if there is any difference
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  7. #7
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: EP45-UD3 power distribution opinions.

    I look forward to seeing your results.
    It will be interesting to see if you can free up and use some "trapped" power from one of the under-utilized rails to power your fans.

    **edit** Is Jeantech the OEM for your psu? If not, you might find a psu review for another 500 watt psu that uses a very similar build (i.e. same pcb and components).
    This might provide information that details the maximum 12 volt power output. Some dual rail units don't implement OCP protection and you really have a single rail setup that appears to meet the older psu limit of 20 amps per rail.
    Last edited by profJim; 09-03-2010 at 09:12 AM.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  8. #8
    kick's Avatar
    kick is offline Senior Member
    Join Date
    Feb 2009
    Location
    Europe,the wild wild west.
    Posts
    1,223

    Default Re: EP45-UD3 power distribution opinions.

    psu origin:
    I cant say for sure .
    there are no certification numbers(Sold in Europe,so there dont need to be altho it does have pfc).
    From hardware secrets ,there are no "clues" as to manufacturer.
    No green insulating tape,no "name stamped on cb or any other indicator.
    It is of east asian origin..gee what a suprise.
    from hand written (tested checked ok) notes inside psu.

    Sirtec is the only alternate manufacturer Ive seen listed for Jeantech but there is no definite conformation.There is no review I can find for the exact psu,tho a lot must have been sold thru "pc world" (computer store chain).
    The 12v supply is definitely "split" into 2 seperate outputs unlike some units Ive seen reviewed that say they are but arent.

    Anyway rather than ramble on Ill connect up the fans first (even tho i will lose some speed readouts).
    That should transfer about 20w total between rails (-10 then +10) ..oooh impressive! ,not really but it should be enough to "bench" whether rail loading makes any difference.
    As I say everything is working and it may just be the extra gx card power draw pushing total power draw and temps toward the psu overall limit .Ill test some variations next week

    edit : For those who are interested

    There is a lot of internecine psu activity in the far east. Sirtec has been manufacturing psu's for a lot of companies since the beginning of the century antec , thermaltake.coolmax and a load of others.
    Sirtec seems to have 2 offshoots /allied companies (for psu) sort of the R+D companies(Jeantech and High power) but they are so low profile in "the west" they seem to be more aimed at selling their tech"look what we can do" to other psu sellers and oem manufacturers of pc's than in direct selling.
    Jeantech has been scaled down(for psu) with High power pumped up since about 2006.High power now mentions jeantech in advertising as more of an adjunct.
    Anyway the similarities across the 2 R+D ranges(as I call them) and to some extent Sirtec are very high.
    Things like the ez extract molex connectors and the psu readout on the back of the power supply .
    example

    There are a load of variations starting from about 450w consumption limit upwards to 1200w 4, 12v rails 5, 12v rails power limits between rails. rails certified at 13a + 17a and total pwer consumption between those not to exceed a certain wattage .
    then 3 other 12v rails one of which is certified at 25a and 2 at 18a. etc etc.
    As I said tho ill go on the theory that my 12v1 rail is limited to 180 w and connect up to thwe 12v2 rail ,to check the action.At present Im checking what games I could get the price up to allow free delivery on some decent connectors.
    Guaranteed "superior " psu's to my presnt one involve at least $100 outlay.
    Last edited by kick; 09-04-2010 at 06:08 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  9. #9
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: EP45-UD3 power distribution opinions.

    An easy fix is to go with the Silverstone ST-1500 watt psu with:
    • 8 x 12-volt rails (25 amps for each rail, 30 amps peak maximum per rail)
    • 4 of the 12 volt rails are dedicated for video cards
    • 80 PLUS Silver rated
    If you don't like the nearly $400 (USD) price, check out the 18 Newegg power supplies (80 Plus Silver or Gold rated) with single 12-volt rails and 1000+ watts
    price range: $185 - $300
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  10. #10
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: EP45-UD3 power distribution opinions.

    messing about with PSU wiring, shifting cables to different rails etc is a really bad idea. I wouldn't recommend anyone mess about with how a PSU is wired up unless they are highly electrically qualified. That includes simply splicing wires. Like you said, you don't actually know for sure what your PSU is doing in terms of power distribution, OCP etc, so why risk fcuking with it?

    As for OCCT's readouts, they're pretty worthless IMO. The only way to get semi accurate ripple measurements is using an oscilloscope in conjunction with some pretty specialist equipment. Who knows how accurate OCCT is? After all it's reporting software, not hardware. When testing a PSU for example for review, a lot of very expensive equipment is needed to load the PSU, record power draw etc. All you can tell form OCCT is that there may be a little ripple and some voltage drop. Forget "5% ripple" as that's got as much chance of being precise as I have of winning the lottery.

    If the PSU isn't up to the job, sell it and buy one that is. That's the only solution, other than buying a specialist 12V only GPU 5.25" bay PSU for the card.

    500W is a little on the restrictive side any way, so maybe ebay it and get something between 650W and 850W and with a single 12V rail. That way you can use the whole output of the PSU without having to deal with pointless seperate rails that have zero benefit anyway on modern PSU circuitry.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

Page 1 of 4 123 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •