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20 pin PSU

T

tterris

n00b
Joined
Nov 9, 2004
Messages
39
I just bought an Ultra 500 W psu and incorrectly assumed that it was new technology and would work on any motherboard, but I come to find that almost all PCIe motherboards take 24 pin psu connectors. What solutions have I to fix this problem?

I see 20 pin to 24 pin connector adapters exist and are only $12. Will this do or will I need to get a new 24 pin psu?

Or are there some 20 pin PCIe mobo's out there that I don't know about?
 
well that is a POWmax PSU
and to say they have a bad reputation is an understatement
(though the Ultra X hasnt developed board killer status like the rest of their line, quite a few members found shortcomings)
and IMO Id say return it


Id recommend an Antec Neopower as twice the supply for the money
 
is the neopower psu the only 24 pin connector one out there now? after all, the nforce 4 boards require 24 pin connectors (although i heard you can use a 20 pin connector as long as you plug it in so that the 4 open pins are south on the board), and there are no new psu's to support this, save the one you mentioned.
 
my apologies for double posting, but could someone give me a list of the best pcie supported psu's out now, or does neopower take the cake?
 
well the best ATX formfactor PSU
(leaving out rackmount supplies ect)
is widely held to be the PC Power & Cooling Turbo Cool 510 Express
(Its actually a 600 > 650 watt PSU for comparision purposes)
and has load regulation far exceeding the spec, and AC Ripple and Noise levels damn near Medical Supply quality (super clean)

it has a single +12V rail so its not technically compliant with ATX12V v2.01, but since it has such tight regulation that really doesnt matter, the new spec called for seperate +12V rails to force lesser manufacturers to isolate possible stability issues from the rail powering the CPU

and it has 34Amps nominal and 38 amps peak on the +12V rail
enough to handle most any reasonable configuration provided your not running over 10 drives
you order it as an ATX12V 24 pin (its also available as a EPS12V, or ATX12V 20 pin)
the Express has a PCI-E video connector (I have a 510 AG which is a EPS12V version with an AGP Pro connector)
there are lots of customizations available for a price, number of connectors, harness length ect, but no bling bling options other than a black supply and braided harness
they range from $200 to $230 + custom options
http://www.pcpowerandcooling.com/home.htm
http://www.pcpowerandcooling.com/products/power_supplies/maxperformance/turbocools/index_hp_atx.htm
http://www.pcpowerandcooling.com/products/power_supplies/custom_options/index.htm
the question becomes why youd actually need a supply like that
I generally only recommend them for rigs with a massive amount of components to power, a serious overclocking rig, or simply an expensive rig you want to protect as much as possible (my workstation falls into the first and last category)


after that Id place the Neopower with a 3% load regulation

and then the Enermax Noisetaker v2.0 and CoolerGiant Series at 5% load Regulation
same with the Fortron Blue Storm 500 Watt, likely the most affordable entry that is reliable
the Topower 600 Watt was recently pulled by OCZ for issues
(the current crop are being replaced by a different lot) that was thier entry into the ATX12V v2.0 field, Tagan\Epower has historically also employed the Topowers but I havent seen one yet


thats pretty much it for the ATX12V v2.0 supplies in the distribution chain right now
though there might be a few Im unaware of or that will be available soon
there is a little confusion on the part of retailers and even manufacturers about listing a spec, so look for a dual +12V amp rating, that will be a ATX12V compliant PSU
as long as it doesnt say EPS12V
an EPS12V supply also has the 24 pin connector (ATX12V adopted it from them), however it also has an 8 pin auxillary connector instead of the 4 pin, you can hook them up as the 8 pin is simply a double set of the 4 pin, but the supply if truely compliant will have 3 or 4 +12V rails and is really for a dual CPU board, so a portion of it capacity will go unused
 
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