Part 2 300watt Power Supply
I'd like to thank everyone who replied to my first question. I just opened
the case for the information on the sticker and here it is: Power Supply Model ATX 300 - 12z 300w MAX 12,19A, 0.8A 5 30A, +5vsb 2A 33 28A +5v + 3.3V 180W MAX 5v & +12v 28w Max Like I said I'd like a decent nvidia video card. Not much on gaming, however. My current card is a nvidia 7500LE w/256 memory. Thanks again! |
Part 2 300watt Power Supply
++++To answer the question, we still need to see a hardware inventory.
HP model number Processor speed, amount of cache, socket - i.e. P4 3.06GHz FSB533 512KB L2 S478 # of hard drives # of optical drives The HP model number, is so I can look up the motherboard and do some background checks (like what cards might be usable). The rest of it, is trying to identify the major consumers of power. You've already told me you had a 7500LE, so I can look up what kind of power that used, just for reference. (Not all cards have power numbers, and some sources of info have disappeared from the web.) Also, I'm missing the point on the video card upgrade. You say you are "not much on gaming". What aspect of the card would you like to improve ? If you are not looking for a "barn burner" of a 3D card, there is quite a good chance that a low end upgrade will work with your supply. For example, an X1950Pro is a recent ATI card (a barn burner) that was made available in AGP form. It uses 65W-70W of power, and would require doing the calculations to check whether there is enough +12V or not. There are also cards that might be down at the 16W level, but it is unclear to me how that would be better than your current card. The new card might support a later version of DirectX. It might have DVI and VGA connectors. Maybe the fan on your old card was loud, and you're hoping the new card will be quiet. But there has to be something in particular you were hoping to get from this. Also, in the above label info you've copied: +12V @ 19A, -12V @ 0.8A, +5V @ 30A, +5VSB @ 2A +3.3V @ 28A +5v + 3.3V 180W MAX (this seems reasonable) 5v & +12v 28w Max (this one must be a typo - do you mean 280W ?) You can look at this for some background info. I assume the 7500LE is AGP and this discusses AGP upgrading. The second link is some benchmarks, so you can compare potential gaming performance (3D performance). On 2D performance, people don't benchmark that anymore, on the assumption that all cards are relatively the same. (Which is why I'm asking what you hope to get from the upgrade. The 2D might be a little faster, but I have no way to compare and tell you by how much.) The third link is missing a few cards, but gives parameters for the various cards. http://www.playtool.com/pages/agpcompat/agp.html http://www23.tomshardware.com/graphics.html http://www.techpowerup.com/gpudb/ Something like this won't use too much power. I would think a swap of this for the 7500LE would be about equal on power. The only gotcha with cards like this one, is they have a Molex 1x4 connector (same as is used on a disk drive) on the end of the video card. You have to plug in a disk drive power connector, to get the video card to work. For a card like this, not a lot of amperes will be drawn. You can get a "Y" cable from Radio Shack, to turn a single disk drive cable, into two connectors. The wires aren't that long though. CHAINTECH GSA73GT GeForce 7300GT 256MB 128-bit GDDR2 AGP 4X/8X $100 http://www.newegg.com/Product/Produc...82E16814145139 Also, video cards like this, sometimes use an undersized cooler, and then the fan has to run faster and louder to do its job. With the HSI bridge chip (small heatsink near the AGP connector), that chip can make it hard to find a quieter aftermarket replacement cooler. In the reviews, nobody mentioned the fan as being loud, so maybe that card is OK, and you won't have to search for a replacement cooler soon after you get the card. Paul ================================================== =========================== On 10-May-2007, Paul wrote: HP model number Pavillion a1620y Processor speed, Pentium 4 3.06 Mhz amount of cache S478 # of hard drives 1 hardrive # of optical drives DVD burner, CD Player 2Gb memory Motherboard Asterope3-GL8E ======================================== The 7500LE is a PCI 16e not AGP ======================================== I just wanted something decent. When I bought this the 7500LE was all HP offered. I don't want/need a 'barnburner' just something better. Thank you very much for all your help! I will check out the info you took the time send me. Mike |
Part 2 300watt Power Supply
Paul,
I was looking at these at Egghead: http://www.newegg.com/product/product.asp?item=N82E16814133172 http://www.newegg.com/product/product.asp?item=N82E16814141031 |
Part 2 300watt Power Supply
wrote:
++++To answer the question, we still need to see a hardware inventory. HP model number Processor speed, amount of cache, socket - i.e. P4 3.06GHz FSB533 512KB L2 S478 # of hard drives # of optical drives The HP model number, is so I can look up the motherboard and do some background checks (like what cards might be usable). The rest of it, is trying to identify the major consumers of power. You've already told me you had a 7500LE, so I can look up what kind of power that used, just for reference. (Not all cards have power numbers, and some sources of info have disappeared from the web.) Also, I'm missing the point on the video card upgrade. You say you are "not much on gaming". What aspect of the card would you like to improve ? If you are not looking for a "barn burner" of a 3D card, there is quite a good chance that a low end upgrade will work with your supply. For example, an X1950Pro is a recent ATI card (a barn burner) that was made available in AGP form. It uses 65W-70W of power, and would require doing the calculations to check whether there is enough +12V or not. There are also cards that might be down at the 16W level, but it is unclear to me how that would be better than your current card. The new card might support a later version of DirectX. It might have DVI and VGA connectors. Maybe the fan on your old card was loud, and you're hoping the new card will be quiet. But there has to be something in particular you were hoping to get from this. Also, in the above label info you've copied: +12V @ 19A, -12V @ 0.8A, +5V @ 30A, +5VSB @ 2A +3.3V @ 28A +5v + 3.3V 180W MAX (this seems reasonable) 5v & +12v 28w Max (this one must be a typo - do you mean 280W ?) You can look at this for some background info. I assume the 7500LE is AGP and this discusses AGP upgrading. The second link is some benchmarks, so you can compare potential gaming performance (3D performance). On 2D performance, people don't benchmark that anymore, on the assumption that all cards are relatively the same. (Which is why I'm asking what you hope to get from the upgrade. The 2D might be a little faster, but I have no way to compare and tell you by how much.) The third link is missing a few cards, but gives parameters for the various cards. http://www.playtool.com/pages/agpcompat/agp.html http://www23.tomshardware.com/graphics.html http://www.techpowerup.com/gpudb/ Something like this won't use too much power. I would think a swap of this for the 7500LE would be about equal on power. The only gotcha with cards like this one, is they have a Molex 1x4 connector (same as is used on a disk drive) on the end of the video card. You have to plug in a disk drive power connector, to get the video card to work. For a card like this, not a lot of amperes will be drawn. You can get a "Y" cable from Radio Shack, to turn a single disk drive cable, into two connectors. The wires aren't that long though. CHAINTECH GSA73GT GeForce 7300GT 256MB 128-bit GDDR2 AGP 4X/8X $100 http://www.newegg.com/Product/Produc...82E16814145139 Also, video cards like this, sometimes use an undersized cooler, and then the fan has to run faster and louder to do its job. With the HSI bridge chip (small heatsink near the AGP connector), that chip can make it hard to find a quieter aftermarket replacement cooler. In the reviews, nobody mentioned the fan as being loud, so maybe that card is OK, and you won't have to search for a replacement cooler soon after you get the card. Paul ================================================== =========================== On 10-May-2007, Paul wrote: HP model number Pavillion a1620y Processor speed, Pentium 4 3.06 Mhz amount of cache S478 # of hard drives 1 hardrive # of optical drives DVD burner, CD Player 2Gb memory Motherboard Asterope3-GL8E ======================================== The 7500LE is a PCI 16e not AGP ======================================== I just wanted something decent. When I bought this the 7500LE was all HP offered. I don't want/need a 'barnburner' just something better. Thank you very much for all your help! I will check out the info you took the time send me. Mike The 7500LE part number, was used for an ATI card years ago. That is why I got confused about your card being AGP. If you look in Google, there are very few references to the 7500LE PCI Express. It doesn't appear to be a retail card, and I don't have any data on it. I think I may have seen it mentioned in a news article, but I cannot find a reference to it now. It is not listed here for example. I'd prefer to know the specs for the 7500LE, or see some benchmarks, just to see if the card I recommend, is an actual upgrade or not. http://www.techpowerup.com/gpudb/ http://www23.tomshardware.com/graphics.html This seems to have the same specs as the power supply you listed. +5 and +12 combined limit 288W. http://www.power-on.com/atx12vhp300bt.html Well, the article here lists your processor as a Pentium 4 3Ghz, so I guess it could be something like a 530. I checked a few of the 3GHz processors in the P4 section on processorfinder.intel.com and they all weigh in around 84W, so that is what I'll use for a power estimate. http://www.epinions.com/Hewlett_Pack...ay_~full_specs http://processorfinder.intel.com/det...px?sSpec=SL7KK (84W/12V) * (1/0.90) = 7.78 amps from the 12V rail. (assumes Vcore switcher is 90% efficient) Hard drive 12V @ 0.6A while mostly idle. CD/DVD 12V @ 1.5A with media in drive - I'll assume one drive occupied Cooling fans - I use 12V @ 0.5A to cover three average fans. So far, without considering the video, the power from the 12V rail is 7.78A + 0.6A + 1.5A + 0.5A = 10.38 amps. There is 19A max on the supply, so that leaves 8.62 amps of capacity. You should be able to run a pretty impressive video card with that. Even if I allocate 3A of unused capacity, that is still 5.62A to play with, times 12V, that is 67.4W. There is a selection of cards that were measured for their power consumption here (07/30/2006). http://www.xbitlabs.com/articles/vid...wer-noise.html You could actually use a 7900GT if you want. Xbitlabs lists that as roughly 48W or 12V @ 4A. The problem with the 7900GT is it looks like the supply has dried up at retail. The replacements are a bit more power hungry. http://www.xbitlabs.com/images/video...ise/7900gt.gif The 7600GT follows a fine tradition of midrange performance. It uses 12V @ 3A, and appears to draw all its power from the PCI Express slot. So you don't even need to connect a power cable to the end of the card. http://www.xbitlabs.com/images/video...ise/7600gt.gif OK, we plug in the 7600GT, and do a final total power check. The three items on the end, account for the controller boards on the storage devices, and for the standby power rail. 12V * (10.38A + 3.0A) + 50W (motherboard) + (2*7.5W CDROM) + (5W HDD) + (5W on 5VSB) = 160.56 + 75 = 235.56W Since the 5V + 12V rating is 288W max, you are well under that, no matter what the 5V load component of the above is. The "50W" motherboard load, comes from either 3.3V or 5V, and it is not possible to calculate exactly which would be used. But considering the ratings of the supply, the above loads are not making a dent there anyway. So you can at least have a 7600GT if you want it. Even a 7900GT would be an option, because Xbitlabs rates it as 48 watts. The 7900GTX is 84W or 12V @ 7A, and that is cutting it close. If you have a radically different processor than the one I selected, you'll have to factor that into the simplified calculation above. Paul |
Part 2 300watt Power Supply
Paul wrote:
There are a few more power numbers here. I don't know how high you want to go pricewise. http://www.xbitlabs.com/articles/vid...e7950gt_3.html Paul |
Part 2 300watt Power Supply
Thank you very much for all your help! I have a lot to decide on.
Thanks again. |
Part 2 300watt Power Supply
How 'bout this one?12v 18A
http://www.newegg.com/Product/Produc...82E16814130062 wrote in message m... Paul, I was looking at these at Egghead: http://www.newegg.com/product/product.asp?item=N82E16814133172 http://www.newegg.com/product/product.asp?item=N82E16814141031 |
Part 2 300watt Power Supply
don't look wrote:
How 'bout this one?12v 18A http://www.newegg.com/Product/Produc...82E16814130062 Yes, a 7600GT should fit the bill. Checking the reviews will give some idea as to how many have failed, how loud the fan is, etc. I'd prefer the 7600GT, to a 7300 series. And $90 after rebate isn't bad. Paul wrote in message m... Paul, I was looking at these at Egghead: http://www.newegg.com/product/product.asp?item=N82E16814133172 http://www.newegg.com/product/product.asp?item=N82E16814141031 |
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