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cubanlord
Joined: 08 Jul 2005
Location: In Japan!
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 Posted: Mon Jan 16, 2006 11:09 pm Post subject: Another PC question for the pro's: |
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| I have just bought a geforce 7800GT graphic's card. It says I need a minimum requirement power supply of 450Watts. Question: how much power can my motherboard take? I know...you are saying, "i don't know what kind of motherboard you have...well...i have a gigabyte GA-8I915P-MF. I can't seem to find the info. anywhere. Please help. Thanks. |
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Gord
Joined: 25 Feb 2003
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| Posted: Tue Jan 17, 2006 1:08 am Post subject: |
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The power supply will state how much output it has and it's impact on the motherboard is zero as each component draws only what it needs. Your power supply could put out a billion watts, and the motherboard would only draw the 12 or whatever watts it needs.
Generally though, a computer will have a 300W or a 350W power supply. If 450W+ is what you need, you'll need to buy a new power supply and there is no risk of damage.
Last edited by Gord on Tue Jan 17, 2006 1:10 am; edited 1 time in total |
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eamo
Joined: 08 Mar 2003
Location: Shepherd's Bush, 1964.
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| Posted: Tue Jan 17, 2006 1:08 am Post subject: |
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I did a bit of research recently when I bought a new graphics card.
You can put in a very powerful power supply (e.g. over 450 watts) without fear. It will still send only as much juice as your motherboard (and the other stuff like fans, drives, other cards) requires of it. No more, no less.
I bought a 450w PSU after getting a 6600GT video card. I didn't have to. According to Nvidia, 350w would have been ample. However, you may be glad of the extra power if you should decide to have a CD-ROM, a DVD-writer, 2 hard drives, sound card, case fan etc.....
It's the same principle as car engines. A Tico and an Equus can both do 90mph. But the Tico will be squeling and maybe blow up. The Equus will be purring and last must longer. |
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hanguker
Joined: 16 Mar 2005
Location: Korea
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| Posted: Tue Jan 17, 2006 2:23 am Post subject: |
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Freaking nice card by the way...7800GT! Wish I had that much money to blow for games! Danawa has them listed from 330-880 000.
Don't worry about the PSU...bigger the better. Especially with THAT card! |
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cubanlord
Joined: 08 Jul 2005
Location: In Japan!
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| Posted: Tue Jan 17, 2006 4:14 am Post subject: |
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man.....i have a small case and thus would have to buy a larger case and a new power supply (an additional $75 to $100). This is on top of the graphic's card price. I am calling tonight. I am going to downgrade a little from the standard 7800GT to the 6800 GT. However, the 6800 GT will have 512ram rather than the 256ram. Looking at the specs. sheet i have, it should be that much of a difference. Wish me luck.
NVIDIA GeForce 6 & 7 Product Lineup Specifications
Product Name # pixel processors # vertex processors Bus width Memory Type/Amount GPU Speed RAM Speed
GeForce 7800 GTX 24 8 256-bit GDDR3/256MB 430MHz 1200MHz
GeForce 7800 GT 20 7 256-bit GDDR3/256MB 400MHz 1000MHz
GeForce 6800 Ultra ** 16 6 256-bit GDDR3/256MB 400MHz 1100MHz
GeForce 6800 GT 16 6 256-bit GDDR3/256MB 350MHz 1000MHz
GeForce 6800 GS 12 5 256-bit GDDR3/128/256MB 425MHz 1000MHz
GeForce 6800 12 5 256-bit GDDR/128MB 325MHz 700MHz
GeForce 6800 LE 8 4 256-bit GDDR/128MB 320MHz 700MHz
GeForce 6600 GT 8 3 128-bit GDDR3/128/256MB 500MHz 1000MHz
GeForce 6600 8 3 128-bit GDDR/128MB 300MHz 275(550)
GeForce 6200 4 3 64/128-bit GDDR/128MB/256MB 300MHz 275(550) |
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Bulsajo
Joined: 16 Jan 2003
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| Posted: Tue Jan 17, 2006 10:41 am Post subject: |
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| cubanlord wrote: |
| man.....i have a small case and thus would have to buy a larger case and a new power supply (an additional $75 to $100). |
How small a case? What card do you use now? (my point being that 450W power supplies are not 'over-sized' and I don't believe a 7800 takes up any more than one PCI slot for the interface and then the space where one more would go due to the fan? So unless your case doesn't have a free slot next to the pci-e slot you wouldn't need a bigger case...) |
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cubanlord
Joined: 08 Jul 2005
Location: In Japan!
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| Posted: Tue Jan 17, 2006 2:49 pm Post subject: |
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dude...my case's width is about 4.5". Two weeks ago, I bought a new 350watt power supply because the original power supply fan starting squealing (bearings went bad). That was $35.00. Having to buy another one would add up fast. It's a tiny case.
The 7800GT card will fit in the case...it's just the power supply. Regardless, the 6800GT with 512ram is on its' way. THAT I can't wait for...it's going to be something else to play Zero Hour, F.E.A.R., Silent Hill 4, and Quake 4 on it. |
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Wrench
Joined: 07 Apr 2005
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| Posted: Tue Jan 17, 2006 3:11 pm Post subject: |
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Don't buy cheap Powersupplies. Sure they say 450 watts but in reality they can't push over 300. Good supplies cost over 80+ dollars.
Since it looks like you have a Intel system be forewarned that P4 can suck up as much as 200 watts alone when under full load. |
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Bulsajo
Joined: 16 Jan 2003
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| Posted: Tue Jan 17, 2006 5:14 pm Post subject: |
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So in other words, you realize you don't actually need to buy another case to have a 7800, right cuban? And why are you complaining about wasting
35, 000 on a cheap power supply and a new case when you are shopping for high end (and consequently high-priced) video cards?
Yet you say you've already bought a 7800 but a 6800 is on its way to you...
I'm trying to make sense of your thread. |
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Gord
Joined: 25 Feb 2003
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| Posted: Tue Jan 17, 2006 6:07 pm Post subject: |
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| Wrench wrote: |
| Don't buy cheap Powersupplies. Sure they say 450 watts but in reality they can't push over 300. Good supplies cost over 80+ dollars. |
Power supplies are like speakers in that you are mostly paying for the name (or in Korea, for example, you can pay 700,000 for a Samsung LCD monitor which will also be sold under another branding for 400,000). The performance difference between Brand X $30 and Brand X $100 is generally the same. Most companies simply rebrand components from a small group of companies that actually make them.
Ironically, it's weight that is more of a true judge. A heavier unit means larger capacitors, and a better heat sync than simple aluminium.
Sticking with a company that actually makes their own power supplies is better as they have a higher amount invested into maintaining an image and relabelling lower wattage power supplies is done far less often.
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| Since it looks like you have a Intel system be forewarned that P4 can suck up as much as 200 watts alone when under full load. |
At full-load, a P4 @ 3.4GHz will consume 115W. 3GHz models use 89 watts. Under 70 for the rest. In comparison, the M line clocks in at around 30 watts. |
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cubanlord
Joined: 08 Jul 2005
Location: In Japan!
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| Posted: Tue Jan 17, 2006 7:00 pm Post subject: |
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Allow me to clear it up:
I bought a 7800GT from the company; before reading the specs. Upon reading the specs, I called the company back and had them change the order to a 6800GT.
Like the previous poster said: I would want to buy a good power supply. I don't believe they make a 500WATT mini power supply for a case that is only 4.5" wide. The 500WATT power supplies are monsters, consequently forcing me to buy a larger case. I don't want to spend over $100 right now considering I just threw down some big bucks for the video card. You may say, "what's the difference if you spend more now". Well.....an extra $100 to $200 is a big difference to me.  Plus, I would rather have the 512ram vs. the extra 4 pixel pipelines and only 256mb or vram. |
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Wrench
Joined: 07 Apr 2005
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| Posted: Tue Jan 17, 2006 7:05 pm Post subject: |
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| Gord wrote: |
| Wrench wrote: |
| Don't buy cheap Powersupplies. Sure they say 450 watts but in reality they can't push over 300. Good supplies cost over 80+ dollars. |
Power supplies are like speakers in that you are mostly paying for the name (or in Korea, for example, you can pay 700,000 for a Samsung LCD monitor which will also be sold under another branding for 400,000). The performance difference between Brand X $30 and Brand X $100 is generally the same. Most companies simply rebrand components from a small group of companies that actually make them.
Ironically, it's weight that is more of a true judge. A heavier unit means larger capacitors, and a better heat sync than simple aluminium.
Sticking with a company that actually makes their own power supplies is better as they have a higher amount invested into maintaining an image and relabelling lower wattage power supplies is done far less often.
| Quote: |
| Since it looks like you have a Intel system be forewarned that P4 can suck up as much as 200 watts alone when under full load. |
At full-load, a P4 @ 3.4GHz will consume 115W. 3GHz models use 89 watts. Under 70 for the rest. In comparison, the M line clocks in at around 30 watts. |
I am sorry I couldn't disagree more about the PSU issue.. Are you trying to tell me that a 35 dollar 450 watt power supply by some unknown company is better then oh lets say Sparkle 450 watt which is about $80.
Are you smoking something? They might share similar parts but they are not re-branded and they are not the same. I just smell bullshit from your advise.
Cheap power supplies are made with cheap parts they cut corners to save money. Did you ever hold a 450 watt no brand name junk PSU and then hold a 450 Enermax PSU?
Zalman, Enermax, OCZ, Sparkle. If you telling me they are the same you know absolutely nothing about power supplies.
You also don't realize how much a p4 will suck up in power either. P4 when Idle it will consume 115 watts if your lucky.
Been around computers long enough to know which power supply is good and what is garbage. I also know the differences |
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Gord
Joined: 25 Feb 2003
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| Posted: Tue Jan 17, 2006 7:39 pm Post subject: |
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| Wrench wrote: |
| I am sorry I couldn't disagree more about the PSU issue.. Are you trying to tell me that a 35 dollar 450 watt power supply by some unknown company is better then oh lets say Sparkle 450 watt which is about $80. |
Froogle finds 450W units for as little as $59. What's your point? Logitech R10 speakers come with a $27 MRSP with an average street price of $20 in most retail stores. I bought seventy five pairs for $9 a pair yesterday.
Just because it is priced high doesn't mean it that the quality is there, or vice versa.
However, as I stated before, a company that makes their own products (which Sparkle does and has for many years over four compounds in China) is more likely to have better quality products than a rebranding company that anyone can do. You and me, let's do it! We can start the "Sparkle and Shine Power Supply Company, LTD." tomorrow and begin selling rebranded power supplies from a company like "Current Solutions". And if we get a bad name, we start again with a new one with no asset loss at all! ROCK ON!
If we had to make our own units, starting again after establishing an image of failure would be considerably more difficult. Thus we would have to actually make a better product if we went this route.
| Quote: |
| Are you smoking something? They might share similar parts but they are not re-branded and they are not the same. I just smell *beep* from your advise. |
If you are going to just make things up and credit me as saying it, at least say something interesting like I claimed to have pushed your mother down the stairs twice or something. I quite clearly said that it is better to buy from a company that makes their own units rather than rebrands someone else's as poor-quality issues are less likely to occur.
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| Cheap power supplies are made with cheap parts they cut corners to save money. Did you ever hold a 450 watt no brand name junk PSU and then hold a 450 Enermax PSU? |
Did you miss the part of my message when I said that weight is an excellent judge of quality because larger capacitors weigh more and copper is heavier than aluminium? Your statement here says yes.
| Quote: |
| Zalman, Enermax, OCZ, Sparkle. If you telling me they are the same you know absolutely nothing about power supplies. |
Wow. You take what I write, pretend I said the opposite, then attack me with my own claims to show I am wrong. Holy crap! However can I post again?!
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| You also don't realize how much a p4 will suck up in power either. P4 when Idle it will consume 115 watts if your lucky. |
Gosh.. a graph that compares entire system consumption used to back up your obviously incorrect claims about CPU power consumption?
Screw this noise. You want to play in the big league, enjoy a engineering report from Intel that not only says you are wrong, but explains pretty much how processors use power now along with problems and possible solutions for the future:
http://www.intel.com/cd/ids/developer/asmo-na/eng/182440.htm?prn=Y
Big words and pretty pictures! Stand tall, be not afraid for it is the path of knowledge. Not available in crayon.
| Quote: |
| Been around computers long enough to know which power supply is good and what is garbage. I also know the differences |
My resume says IBM in the past and a number of technology companies who I work with right now. I spent $7000 US this afternoon buying computer components for a personal work project, and that's been an average weekday for me during the last couple weeks. I have a degree in computer science and have built my own computer components.
What's your resume say? Built a computer last year, looked at some pretty boxes in deciding what to buy?
Since you're citing pretty graphs that don't actually say what you say they do and skipped over or completely inversed much of what I said so you could pretend to attack me, it's obvious you don't actually read what people say or simply don't understand what is being said. I am curious as to learn which path it is! |
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cubanlord
Joined: 08 Jul 2005
Location: In Japan!
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| Posted: Tue Jan 17, 2006 7:51 pm Post subject: |
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wow..i am sure learning a lot about power supplies. Crazy question here:
can I find a mini power supply to fit in my case that maxes out at 500watts? I am assuming this would be grossly expensive. |
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eamo
Joined: 08 Mar 2003
Location: Shepherd's Bush, 1964.
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| Posted: Tue Jan 17, 2006 8:24 pm Post subject: |
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| cubanlord wrote: |
wow..i am sure learning a lot about power supplies. Crazy question here:
can I find a mini power supply to fit in my case that maxes out at 500watts? I am assuming this would be grossly expensive. |
My Korean isn't really good enough to search for what you want but if it's in Korea it's on this website. http://pc.danawa.com/ |
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