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Thread: no clue...




  1. #1
    Join Date
    Nov 2008
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    lv
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    Unhappy no clue...

    why does my pc fry one power supply(aspire atx-as-500w) and shut down my new one (rx-630a volcano)..? the mobo states 500w is ok...
    i just built this machine and researched every component... the mobo is the asus p5n-e 630i sli and on it i put the q6600 gs, 4gb of ocz reaper (800/6400) and two 8800 gt oc... the os is vista prem 32bit... nothing has been overclocked and the system smokes f.e.a.r. @ 110 fps minimum! with everything maxed (226 fps is average !) but this only lasts for about 30 or 40 minutes before my psu shuts down... it took an hour for it to completely fry the aspire cause it didn't have an over draw switch... i've been upgrading and building since printers used ink ribbons and cannot figure this out... oh and the system works fine in single card mode...so far... any helpful hints or outright facts are a good thing...

  2. #2
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    Default Re: no clue...

    Amperage is likely going to be your main concern. The Raidmax PSU you noted has two 12v rails, one rated at 16A and the other at 18A. The 8800GT series graphics boards are set to need a minimum rating of 24A for a single board. You are frying your PSU because there just isn't enough juice being provided for your hungry video cards. Looks like you're gonna have to bite the bullet and buy a high performance power supply.
    Old age and treachery will overcome youth and skill
    My Toys

  3. #3
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    Default Re: no clue...

    Quote Originally Posted by Darthtanion View Post
    Amperage is likely going to be your main concern. The Raidmax PSU you noted has two 12v rails, one rated at 16A and the other at 18A. The 8800GT series graphics boards are set to need a minimum rating of 24A for a single board. You are frying your PSU because there just isn't enough juice being provided for your hungry video cards. Looks like you're gonna have to bite the bullet and buy a high performance power supply.
    thanks for the re... i think you hit the nail on the head...makes perfect sense... i just never suspected the 8 series required so much amperage but i ran the psu recomendation utility in asus support and the dam thin said i have to have an 800w with 24a just as you stated...
    well so much for my researching skills... so i have to assume that i can't even run my machine on one 8800 gpu then... i just don't get why these manufacturers won't state the obvious like "this power supply has only limited sli capability" or "warning... the amperage of this psu is only enough for 7 series gpu's or lower in sli" instead they tell you this psu is sli ready and has all the power you need....
    thanks again...
    btw.... know anyone interested in a rx 630a...like new... cheap.... only slightly stressed..?

  4. #4
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    Default Re: no clue...

    Well that sucks. So I have a Nvidia 8800GT 512mb one of the earlier ones how much amperage does it need?
    Lian Li PC-7F Chassis Black
    Gigabyte GA-X48-DS5 MB (Rev. 1.1 BIOS v.F8c)
    Gigabyte ODIN GT 800Watt PSU
    Intel Core2Quad Q9550 E0 @ 3.4Ghz @ 1.25vcore
    Noctua NH-U12P + AS5
    G.Skill 2X2GB F2-8500CL5D-4GBPK
    2 X ATI Radeon HD4850 512MB (Crossfired)
    Dell Ultrasharp 2209WA IPS
    2 X 1TB Seagate 7200.11 in RAID 1
    Pioneer DVR216 SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------
    Gigabyte Poseidon Chassis
    Gigabyte GA-EP45-DS3 (Rev. 1.0 BIOS v.F9)
    ASUS Artic Square CPU Cooling with AS5
    Thermaltake TR2 RX 550Watt PSU
    Intel Core2Duo E8500 E0 @ 3.8Ghz @ 1.25vcore
    Corsair 2 X 2Gb XMS2 PC6400C5 DDR2
    NVIDIA GeForce 8800GT 512MB
    1 X Seagate 1TB 7200.12 + Seagate 750GB 7211.11
    Sony SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------

  5. #5
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    lv
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    Default Re: no clue...

    Quote Originally Posted by NimrodAUS View Post
    Well that sucks. So I have a Nvidia 8800GT 512mb one of the earlier ones how much amperage does it need?
    as near as i can tell 22a is the minimum so i'm going single rail at 36a .... i have been seeing a lot of starvation with sli in multi's unless you can afford 800w pumping 28a per rail.... i'm a cheapskate my rig was awesome till that second psu fried... i found out it was just the sli and sata that went on it (modular) so i may go with an express psu (fits in the drive bay and runs gpu's and sata) just can't find one thats not more than 30a for less than 50 bucks...

  6. #6
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    Default Re: no clue...

    Well I have a gigabyte ODIN GT 800Watt PSU and From what I can tell its only 25amps it has 4 rails I should check in the book and make sure i have got it plugged in the right color, I have red or blue PCI-E Power Connectors
    Lian Li PC-7F Chassis Black
    Gigabyte GA-X48-DS5 MB (Rev. 1.1 BIOS v.F8c)
    Gigabyte ODIN GT 800Watt PSU
    Intel Core2Quad Q9550 E0 @ 3.4Ghz @ 1.25vcore
    Noctua NH-U12P + AS5
    G.Skill 2X2GB F2-8500CL5D-4GBPK
    2 X ATI Radeon HD4850 512MB (Crossfired)
    Dell Ultrasharp 2209WA IPS
    2 X 1TB Seagate 7200.11 in RAID 1
    Pioneer DVR216 SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------
    Gigabyte Poseidon Chassis
    Gigabyte GA-EP45-DS3 (Rev. 1.0 BIOS v.F9)
    ASUS Artic Square CPU Cooling with AS5
    Thermaltake TR2 RX 550Watt PSU
    Intel Core2Duo E8500 E0 @ 3.8Ghz @ 1.25vcore
    Corsair 2 X 2Gb XMS2 PC6400C5 DDR2
    NVIDIA GeForce 8800GT 512MB
    1 X Seagate 1TB 7200.12 + Seagate 750GB 7211.11
    Sony SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------

  7. #7
    Join Date
    Nov 2001
    Location
    Texas, USA
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    Default Re: no clue...

    Your PSU has four rails, two of which are rated at 18A and two rated at 25A. Since it has multiple rails it will be the latest ATX standard, which will automatically combine rails in the event a single rail cannot sustain the necessary draw. Your PSU should have no issues with that video card, even if overclocked to its max.
    Old age and treachery will overcome youth and skill
    My Toys

  8. #8
    Join Date
    Dec 2008
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    Australia
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    Default Re: no clue...

    Sweet, Thats what I like to hear. I was just wondering why I have two or maybe three different colour PCI-E Connectors, but there is 2 red and maybe 2 blue or one blue and one black?
    Lian Li PC-7F Chassis Black
    Gigabyte GA-X48-DS5 MB (Rev. 1.1 BIOS v.F8c)
    Gigabyte ODIN GT 800Watt PSU
    Intel Core2Quad Q9550 E0 @ 3.4Ghz @ 1.25vcore
    Noctua NH-U12P + AS5
    G.Skill 2X2GB F2-8500CL5D-4GBPK
    2 X ATI Radeon HD4850 512MB (Crossfired)
    Dell Ultrasharp 2209WA IPS
    2 X 1TB Seagate 7200.11 in RAID 1
    Pioneer DVR216 SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------
    Gigabyte Poseidon Chassis
    Gigabyte GA-EP45-DS3 (Rev. 1.0 BIOS v.F9)
    ASUS Artic Square CPU Cooling with AS5
    Thermaltake TR2 RX 550Watt PSU
    Intel Core2Duo E8500 E0 @ 3.8Ghz @ 1.25vcore
    Corsair 2 X 2Gb XMS2 PC6400C5 DDR2
    NVIDIA GeForce 8800GT 512MB
    1 X Seagate 1TB 7200.12 + Seagate 750GB 7211.11
    Sony SATA DVD MultiDrive
    Windows 7 Ultimate X64 RC1 (Build 7232)
    ------------------------------------------------

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