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Question on PSU power connector
Have not made my purchase yet. Looking at:
GIGABYTE GA-E7AUM-DS2H motherboard Pentium E6300 Wolfdale 2.5GHz LGA775 cpu I want to buy a tower w/PSU for it, and I have picked: Athenatech A4224WW.400 Beige Steel ATX Mid Tower Computer Case ATX 2.01v 400W (20+4-P, Dual +12V,2 x SATA Connectors) I am wondering if the PSU in this tower has the proper power connection. IOW, the board has a 24-pin receptacle, but the PSU connector only has 20 pins plus an extra 4-pin'er. Is this tower a good choice? Or should I try to find a tower with a straight 24-pin connector? Thanks for your advices Duke |
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Question on PSU power connector
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Question on PSU power connector
On Thu, 02 Jul 2009 17:03:50 GMT, Grinder
wrote: A 20+4 pin connector is just as good as a 24 pin connector. Oops! I read some of the GIGABYTE GA-E7AUM-DS2H motherboard manual at http://america.gigabyte.com.tw/FileL...aum-ds2h_e.pdf (pp25) - the PSU must be at least 500W and provide a 24-pin connector AND a separate 12V 4-pin'er. So I'm gonna have to find another tower/PSU combo. Thanks anyway Duke |
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Question on PSU power connector
wrote in message ... On Thu, 02 Jul 2009 17:03:50 GMT, Grinder wrote: A 20+4 pin connector is just as good as a 24 pin connector. Oops! I read some of the GIGABYTE GA-E7AUM-DS2H motherboard manual at http://america.gigabyte.com.tw/FileL...aum-ds2h_e.pdf (pp25) - the PSU must be at least 500W and provide a 24-pin connector AND a separate 12V 4-pin'er. So I'm gonna have to find another tower/PSU combo. Thanks anyway Duke Your best bet would be to buy a case without a PSU. Then you can buy a quality PSU that meets your requirements. I would opt for a 650W unit at minimum. Some of the PSUs that come with cases are of dubious quality. |
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Question on PSU power connector
wrote:
On Thu, 02 Jul 2009 17:03:50 GMT, Grinder wrote: A 20+4 pin connector is just as good as a 24 pin connector. Oops! I read some of the GIGABYTE GA-E7AUM-DS2H motherboard manual at http://america.gigabyte.com.tw/FileL...aum-ds2h_e.pdf (pp25) - the PSU must be at least 500W and provide a 24-pin connector AND a separate 12V 4-pin'er. So I'm gonna have to find another tower/PSU combo. Thanks anyway Duke If you'd looked at the picture, you would have seen the connectors are fine. http://c1.neweggimages.com/NeweggIma...190-085-13.jpg The main connector is 24 pin. Like many supplies, it is hinged and separable. When left together, it is a 24 pin. But, you can remove a four pin section from the end of the connector, if the motherboard only has a 20 pin connector. In other words, the connector is designed to work with current 24 pin motherboards, or with older 20 pin motherboards. The four pins on the end, that unhinge, would have four different color wires coming from it. The second connector to examine in the picture, is the square 2x2 connector in the center left of the picture. It is labeled as a CPU power connector. The wire colors cannot be seen in the picture, but CPU power should have two yellow and two black wires. The power supply label is in this picture. I can't read a brand on the supply, so it is just a generic PSU. It looks like a single output 12V supply, with current limiters installed to make it appear it has 12V1 and 12V2. The supply would likely be 68% efficient (that affects the heat output when it is regulating). If a supply has a different efficiency rating, it would be printed on the label. http://c1.neweggimages.com/NeweggIma...190-085-09.jpg Personally, I shop for cases without a supply, so I can tailor my supply purchase. That increases the expense (because they probably don't pass along the savings, if a supply is not included). But it also means, I'm not throwing a bundled supply into the landfill, because it is not appropriate. Modern systems and their base load, is not too high. The video card or cards, can make a difference to the power supply selection. But if the add-in video is a low end card, or if you're using integrated video, the 400W might be plenty. The label on there shows you have 12V @ 25A to work with. A Core2 Duo might use 6A of that, on paper at least. My 2.6GHz processor only uses 3A maxed, so that won't make a big dent in the 25A. So if we use the spec value, there would be 19A left to run a video card. A mid-range video card might be 110W or so, which is 9 amps. That leaves 10A. You could run a decent number of drives with the remainder. We don't know what the quality of the supply is like, which is why you'd read the Newegg reviews section, to find out. If there have been lots of "pops", "bangs", or "DOA", the reviews should tell you. One comment in the reviews, is the case isn't long enough. A CDROM, when installed in the 5.25" rack section, can bump into the motherboard. (That would depend on whether the drive was a modern shorty, or an older regular length drive.) So it may depend on whether the motherboard has stuff in that area, as to how well the case will work out. (Your motherboard has the ATX main power connector, up near that corner.) And the steel on the case is apparently paper thin. Paul |
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Question on PSU power connector
On Thu, 02 Jul 2009 15:29:56 -0400, Paul wrote:
If you'd looked at the picture, you would have seen the connectors are fine. http://c1.neweggimages.com/NeweggIma...190-085-13.jpg You are right! I did look at that picture, and in fact I printed it. I didn't count up the little sockets right. 12 + 12 do indeed make 24 Sorry The main connector is 24 pin. Like many supplies, it is hinged and separable. When left together, it is a 24 pin. But, you can remove a four pin section from the end of the connector, if the motherboard only has a 20 pin connector. In other words, the connector is designed to work with current 24 pin motherboards, or with older 20 pin motherboards. The four pins on the end, that unhinge, would have four different color wires coming from it. The second connector to examine in the picture, is the square 2x2 connector in the center left of the picture. It is labeled as a CPU power connector. The wire colors cannot be seen in the picture, but CPU power should have two yellow and two black wires. 12V I'm led to believe. The power supply label is in this picture. I can't read a brand on the supply, so it is just a generic PSU. It looks like a single output 12V supply, with current limiters installed to make it appear it has 12V1 and 12V2. The supply would likely be 68% efficient (that affects the heat output when it is regulating). If a supply has a different efficiency rating, it would be printed on the label. http://c1.neweggimages.com/NeweggIma...190-085-09.jpg Personally, I shop for cases without a supply, so I can tailor my supply purchase. That increases the expense (because they probably don't pass along the savings, if a supply is not included). But it also means, I'm not throwing a bundled supply into the landfill, because it is not appropriate. Modern systems and their base load, is not too high. The video card or cards, can make a difference to the power supply selection. But if the add-in video is a low end card, or if you're using integrated video, the 400W might be plenty. The label on there shows you have 12V @ 25A to work with. A Core2 Duo might use 6A of that, on paper at least. My 2.6GHz processor only uses 3A maxed, so that won't make a big dent in the 25A. So if we use the spec value, there would be 19A left to run a video card. A mid-range video card might be 110W or so, which is 9 amps. That leaves 10A. You could run a decent number of drives with the remainder. I plan 3 plus an external 500GB'er. We don't know what the quality of the supply is like, which is why you'd read the Newegg reviews section, to find out. If there have been lots of "pops", "bangs", or "DOA", the reviews should tell you. One comment in the reviews, is the case isn't long enough. A CDROM, when installed in the 5.25" rack section, can bump into the motherboard. (That would depend on whether the drive was a modern shorty, or an older regular length drive.) So it may depend on whether the motherboard has stuff in that area, as to how well the case will work out. (Your motherboard has the ATX main power connector, up near that corner.) And the steel on the case is apparently paper thin. Good thought, I have run into that. Paul During the past few hours, I have been looking at this PSU:: LOGISYS Computer PS550ABK 550Watts @ http://www.newegg.com/Product/Produc...82E16817170010 I haven't found a reasonably-priced enclosure as yet. |
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Question on PSU power connector
On Thu, 2 Jul 2009 14:34:34 -0500, VanguardLH wrote:
Something else to consider is the distance from where the PSU mounts to where the connector is on the motherboard. If you get a tall tower, the cords from the PSU could be too short. Make sure you get a PSU with long cables if you get a tall tower. Hmmm. It goes on doesn't it? Thanks for the warning. Duke |
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Question on PSU power connector
wrote:
During the past few hours, I have been looking at this PSU:: LOGISYS Computer PS550ABK 550Watts @ http://www.newegg.com/Product/Produc...82E16817170010 I haven't found a reasonably-priced enclosure as yet. Looking at the reviews for that $23 supply, I see: ******* BAD BAD don't get this junk Pros: no pros Cons: This power supply fried my hard drives Other Thoughts: I hate LOGISYS ******* Smoked my motherboard Pros: Cheap Cons: Worked great for 2 weeks then died taking my motherboard with it. Nasty, don't be cheap, but better quality! ******* Ouch! Paul |
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Question on PSU power connector
On Thu, 02 Jul 2009 13:46:35 -0400, wrote:
On Thu, 02 Jul 2009 17:03:50 GMT, Grinder wrote: A 20+4 pin connector is just as good as a 24 pin connector. Oops! I read some of the GIGABYTE GA-E7AUM-DS2H motherboard manual at http://america.gigabyte.com.tw/FileL...aum-ds2h_e.pdf (pp25) - the PSU must be at least 500W and provide a 24-pin connector AND a separate 12V 4-pin'er. So I'm gonna have to find another tower/PSU combo. Thanks anyway Duke The manual is not necessarily correct. You mentioned the CPU but not all the parts in the system. Once you list all the parts we'll have a better idea of total system peak power consumption but briefly, if besides what you mentioned you'll only have a modest video card, couple of hard drives and an optical drive, you could run the system fine off a good quality 300W PSU providing it is a modern design with ample 12V current. You do not necessarily need a 24pin motherboard connector, the extra 4 pins are simply to supply more power on the same rails the 20 pin connector supplies, only higher end systems need the extra 4 wires. However, as Paul pointed out even a 500W PSU can be junk, overrated. Chose a good quality PSU so you can trust the ratings... you do get what you pay for, a $20 500W PSU is typically little if any better than a $20 300W PSU, but reasonably speaking unless you find a closeout price or large rebate, you should expect to pay closer to $40 for a median quality 400W PSU, or $50 to $60 for a median quality 500W. |
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