Paul wrote:
> In article <eS2Ag.11699$Ca.3928@fe1.news.blueyonder.co.uk>, "Pete"
> <not@this.address> wrote:
>
>> Pete wrote:
>>> Paul wrote:
>>>> In article <_S_zg.10219$Ca.1919@fe1.news.blueyonder.co.uk>, "Pete"
>>>> <not@this.address> wrote:
>>>>
>>>>> I have just bought a Ultra Xconnect power supply 400watts to use
>>>>> in conjunction with a AMD 3500+ and skt 939 board.
>>>>>
>>>>> Here it is:
>>>>>
>>>>
> http://www.ultraproducts.com/product...&productID=304
>>>>>
>>>>> It says it supports Pentium 4 and AMD CPUs and meets ATX version
>>>>> 2.03 and ATX 12V version 1.2 specification.
>>>>>
>>>>> When I bought it I thought it was the dogs bollocks but now I see
>>>>> motherboards with 24 pin PSU connectors and wonder what's going
>>>>> on.
>>>>>
>>>>>
>>>>> Have I bought a lemon? Is it out of date? Has the ATX spec moved
>>>>> on?
>>>>>
>>>>> Can you plug a 20pin ATX connector from the power supply onto a
>>>>> 24pin connector on the motherboard and then use a 4 pin lead for
>>>>> the remaining 4 pins or would I need a convertor?
>>>>>
>>>>>
>>>>> The motherboard I want to use it with has the following
>>>>> connectors:
>>>>>
>>>>> 24-pin ATX Power connector
>>>>> 4-pin ATX 12V Power connector
>>>>>
>>>>> Would I need to buy extra cables / convertors to use it with this
>>>>> board?
>>>>>
>>>>> Thanks
>>>>>
>>>>> Pete
>>>>
>>>> <----- ATX 2.0+ main connector -----> <--- ATX previous versions
>>>> --->
>>>>
>>>> Pin Signal Color Pin Signal Color Pin Signal Color Pin
>>>> Signal Color 1 +3.3VDC Orange 13 +3.3VDC Orange 1 +3.3VDC
>>>> Orange 11 +3.3VDC Orange 2 +3.3VDC Orange 14 -12VDC Blue 2
>>>> +3.3VDC Orange 12 -12VDC Blue 3 COM Black 15 COM Black
>>>> 3 COM Black 13 COM Black 4 +5VDC Red 16 PS_ON# Green
>>>> 4 +5VDC Red 14 PS_ON# Green 5 COM Black 17 COM Black
>>>> 5 COM Black 15 COM Black 6 +5VDC Red 18 COM Black
>>>> 6 +5VDC Red 16 COM Black 7 COM Black 19 COM Black
>>>> 7 COM Black 17 COM Black 8 PWR_OK Gray 20 Reserved N/C
>>>> 8 PWR_OK Gray 18 Reserved
>>>> N/C (-5V)
>>>> 9 +5VSB Purple 21 +5VDC Red 9 +5VSB Purple 19 +5VDC
>>>> Red 10 +12V1DC Yellow 22 +5VDC Red 10 +12VDC Yellow 20
>>>> +5VDC Red 11 +12V1DC Yellow 23 +5VDC Red
>>>> 12 +3.3 VDC Orange 24 COM Black
>>>>
>>>> <--- ATX 2.0+ 12V for proc ------> <--- ATX previous
>>>> versions --->
>>>> Pin Signal Color Pin Signal Color Pin Signal Color Pin
>>>> Signal Color 1 COM Black 3 +12V2DC Yellow/Black 1 COM Black
>>>> 3 +12VDC Yellow 2 COM Black 4 +12V2DC Yellow/Black 2 COM
>>>> Black 4 +12VDC Yellow
>>>>
>>>> Changes:
>>>>
>>>> 1) -5V removed, prev supplies probably had it. Usually not an
>>>> issue. 2) Four addition pins on main connector. Extra +3.3V, +5V,
>>>> +12V, GND Helps with PCI Express motherboards. For SLI boards,
>>>> 24 pin recommended (to get two 6 amp pins to feed the two video
>>>> cards via PCI Express slot connectors). For single video card,
>>>> 20 pin is generally enough. 6600GT for example, draws 4 amps.
>>>> Xbitlabs.com has measured many cards. If in doubt, do a detailed
>>>> calculation. 3) 12V output split into two separate 12V circuits.
>>>> No advantage to customer, due to need to allocate extra "slack"
>>>> when buying. Perhaps intended to meet IEC60950 ? (To limit max
>>>> power per 12V output) 12V1 feeds disks and motherboard (and video
>>>> card) 12V2 used exclusively for processor (in your computer, that
>>>> would be 8.24A)
>>>>
>>>> * 24 pin can plug to 20 pin mobo, as long as pins don't bump
>>>> 20 pin can plug to 24 pin mobo (same pinout) - use the right
>>>> holes. Some 24 pin are detachable, into a 20 pin part and a
>>>> detached 4 pin part. At least one guy has managed to plug the
>>>> detached 4 pin, into the processor Vcore input. (I haven't
>>>> checked to see how hard that is to do.)
>>>>
>>>> PCI Express slots have 12V pins on them and allow up to 5 amps.
>>>> Video cards (not overclocked) seem to be designed to draw about 4
>>>> amps or a tiny bit more, through the PCI Express x16 slot. The
>>>> single 12V wire on the 20 pin connector carries at least 6 amps, so
>>>> using a 20 pin connector on a non-SLI board seems reasonable. The
>>>> fan header current also flows through the single 12V pin on the 20
>>>> pin connector. Main connector rated for 6 amps per pin.
>>>>
> http://www.molex.com/cgi-bin/bv/mole...roductID=98716
>>>>
>>>> 12V processor power connect pins rated at 8 amps per pin.
>>>>
> http://www.molex.com/cgi-bin/bv/mole...roductID=76873
>>>>
>>>> Molex disk drive connector rated at 8 amps per pin (based on
>>>> assuming a right angle PCB mount connector, and 18 gauge wire -
>>>> Amp 82181 catalog)
>>>>
>>>> Enjoy your new power supply. No need for adapters.
>>>>
>>>> The Ultra you have selected, has 12V @ 16A. If you had an 89W AMD
>>>> processor, that is (89W/12V)/0.90 = 8.24A. A midrange video card
>>>> like 6600GT is 4A. That is 12.24 amps so far. A disk drive idles
>>>> at 0.5A. A CDROM can draw 1.5A according to the rating on the
>>>> label. Allocate
>>>> 0.5A for some fans. We are now at 14.74 amps of 16A. Your new Ultra
>>>> is suitable for a midrange gamer with minimal storage devices. More
>>>> than 16 amps is required if your PC has more toys in it. For
>>>> example, if you bought an ATI X1900XTX, it draws 10 amps (part
>>>> through the PCI Express slot, part through the 2x3 PCI Express
>>>> connector), and you would need about 12V @ 23A to have a stable
>>>> computer. So, enjoy your new Ultra, but do not overload it.
>>>>
>>>> HTH,
>>>> Paul
>>>
>>> Thanks for the detailed reply Paul.
>>>
>>> Just to confirm what you have said:
>>>
>>> 1. Plug the 20 pin ATX motherboard power cable into the 24pin socket
>>> on the MB
>>>
>>> then...
>>>
>>> Sorry to be thick
>>>
>>> Thanks
>>>
>>> Pete
>>
>> Sorry Paul, I just noticed that the spec on the side of the box is
>> different to the spec on their website.
>>
>> This is what it says on the box, is this better for me or worse?
>>
>> Thanks
>>
>> Pete
>>
>> +3.3VDC=16A
>> +5vDC=30A
>> +12vdc=19A 228W
>> -12vdc=0.6A
>> -5vdc=0.6A
>> +5vsb=2.0A
>>
>>
>>
>>
>>
>>
>> +3.3V
>>
>> AC INPUT
>> 115V/230V 10A/6A 60/50Hz
>> DC OUTPUT
>> +3.3V
>> +5V
>> +12V
>> -12V
>> -5V
>> +5VSB
>> 500W
>> Max
>> Combined
>> Watts
>> 28A
>> 30A
>> 34A
>> 0.8A
>> 0.3A
>> 2A
>> 500W
>
> If the link in question is this one, the 34A rating on 12V is plenty.
> Just plug it in and use it :-)
>
> http://www.ultraproducts.com/product...&productID=298
>
> HTH,
> Paul


No, the link shows the 500watt psu, mine is the 400watt one but all the
specs on the site differ from those on my box, that's why I typed them in. R
the specs I listed OK?

Thanks

Pete