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What Does This Entail?

post #1 of 27
Thread Starter 
Quote:
  • PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
  • 550 Watt or greater power supply with one 150W 8-pin PCI Express® power connector and one 75W 6-pin PCI Express® power connector recommended
I'm not exactly an expert on computers, but this is for the latest 6xxx GPU. I'm not sure what exactly an X16 Lane Graphics Slot is.

I'm also thinking of running this card in crossfire with 4 of the latest AMD GPU. I don't quite understand crossfire in this sense, so could somebody please explain how exactly 4 GPUs are set up in a computer, including the power source and any other devices that have to plug into one another with the GPU.
    
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post #2 of 27
Quote:
Originally Posted by stealtrecon View Post
I'm not exactly an expert on computers, but this is for the latest 6xxx GPU. I'm not sure what exactly an X16 Lane Graphics Slot is.

I'm also thinking of running this card in crossfire with 4 of the latest AMD GPU. I don't quite understand crossfire in this sense, so could somebody please explain how exactly 4 GPUs are set up in a computer, including the power source and any other devices that have to plug into one another with the GPU.
An x16 slot is the standard PCI-E (or PCI-Express) slot today. Usually, people almost always only refer to it as a PCI-E slot because there are also other PCI-E slots at 8x, 4x, and 1x. So this makes it easy because then all people have to do is specify "8x", "4x" and "1x" when referring to the other slot types! So this way when I say "PCI-E slot" to someone, they just assume that I'm talking about the 16x slot because I didn't specify 8, 4, or 1.

Anyway, setting that jargon aside, it is very important to have a motherboard that has at least one PCI-E x16 slot so that a PCI-E card can be attached (such as any modern graphics card). But of course, for four cards, it would require four slots and a very powerful power supply that also has enough connectors (it would probably need a total of eight PCI-E power connectors, two per card). This gets pretty damn expensive too! We're talking about like a 1200W power supply and four hopefully-good graphics cards (like nearly top of the line so that this becomes more worth the effort), not to mention the motherboard to support those cards. But then you will want a CPU that doesn't bottleneck this setup either! Plus, you'll want memory that doesn't bottleneck it. What "bottlenecking" means is that it just isn't an equal in a sense, but rather an inferior and thus the performance of the cards would be held back, or "bottlenecked". My little dual-core CPU would definitely bottleneck a quad-card setup!

But now what Crossfiring is, is that you connect the monitor to the main card, and then the power of the other card(s) is/are used to add to the graphics processing power (the cards work together as a team). But this doesn't mean that if you have two in Crossfire that you'll get 100% of the 2nd card. Unfortunately, it's less than 100% due to scaling. So it's usually more like... 50-75% of the 2nd card (I think, but don't quote me).

So, if you're looking to have a quad-card setup, then you will need to build your own computer and you'll need to put a ton of money into it and you'll need to make sure you get a very good power supply. I don't mean that the higher the wattage the better, but I mean just the quality itself.

So how prepared are you for this project?
Edited by TwoCables - 12/22/10 at 12:32am
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post #3 of 27
Thread Starter 
So far this topic shows you how prepared I am for this project.

http://www.overclock.net/servers/895...l#post11734911

Quote:
Takes Up Two Slots
Also, in the quote, a review site referred to the graphic card taking up two slots. What does that mean? That I need 8 X16 lanes?

Ignore the GPU that I currently have selected in my thread by the way.
    
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post #4 of 27
Two slot doesn't mean that it will take up two lanes, it means it will take two slots on the back of your case. It may COVER another lane however.

Slot - Expansion slots on back of your case
Lane - Physical connector on the motherboard that you plug a device into
    
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post #5 of 27
Thread Starter 
Thank you for the clarification, kudos. I appreciate the help, seeing as I know very little about computers and the difference between terms.
    
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post #6 of 27
Taking up two slots means the the card is wide, so even though it only connects to one PCI-E slot, its cooler blocks off another slot, which makes it two.
Motherboard today are designed for this by putting a PCI x1 slot or leaving a space between two PCIE x16 slots. So a motherboard with 4 PCIE x16 slots is what you need.
Anyway, buy a powerful powsersupply and most important, a big casing, a full tower, because you are going to need one with at least 8 PCIE slots.
One last thing, good lucky with your electricity bill with 4 way crossfire
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post #7 of 27
Thread Starter 
Well the good thing about ATI is they are making their graphic cards more energy friendly. I expect that they use very little energy when in a passive mode. I'm guessing I'm going to need more than 1500 watts though, so the question is how do I utilize to power sources?

Edit: I still haven't decided whether I just want to run dual or quad crossfire. I may just go with dual simply because its cheaper.
Edited by stealtrecon - 12/22/10 at 12:51am
    
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post #8 of 27
Quote:
Originally Posted by stealtrecon View Post
So far this topic shows you how prepared I am for this project.

http://www.overclock.net/servers/895...l#post11734911



Also, in the quote, a review site referred to the graphic card taking up two slots. What does that mean? That I need 8 X16 lanes?

Ignore the GPU that I currently have selected in my thread by the way.
That thread seems out of my league, so I need to keep this simple for my own sake.

When a card is said to take up two slots, it means that the heatsink/cooler on it is so big that it takes up so much physical space that it blocks the neighboring slot on the motherboard. So let's say you have a motherboard with the following slot config (literally, from top to bottom, as though it is mounted in a case):
  • PCI-E x16
  • PCI
  • PCI-E x16
  • PCI
  • PCI-E x8

On a motherboard like this, that first PCI slot (2nd one down in this list) would be blocked by a graphics card that has a cooler that's big enough to make the card be a "dual-slot" card. So, the heatsink/cooler is called a "dual-slot cooler", or "dual-slot heatsink". Or that it has "a dual-slot design".

Some cards even have triple-slot heatsinks. This means that both that PCI slot and the 2nd PCI-E x16 slot is blocked by the heatsink! One such example is the "AMP!' heatsink included on some Zotac branded cards. It's insane, but really cool (ahem).

Quote:
Originally Posted by stealtrecon View Post
Well the good thing about ATI is they are making their graphic cards more energy friendly. I expect that they use very little energy when in a passive mode. I'm guessing I'm going to need more than 1500 watts though, so the question is how do I utilize to power sources?

Edit: I still haven't decided whether I just want to run dual or quad crossfire. I may just go with dual simply because its cheaper.
If it were me, then I would at least TRY to get them to build a quad-Crossfire setup. Or, go with two dual-GPU cards (some of ATIs cards have two GPU chips right on the card). After all, this is a once-in-a-lifetime chance right?

Hey wait a sec... can you request that an expert actually help you pick out parts and help teach you things? I don't mean some dude who's like "Hey, let's go to Dell's website and build a computer", but I mean someone who's built SEVERAL of their own computers, and someone who has even overclocked them all. It seems like Make-a-Wish does everything else, so I figure "hey, why not?".

But y'know, Overclock.net is a DAMN good resource, so don't worry too much.

Anyway, are you asking how you can utilize two power sources? I mean, all you'd need is one power supply.
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #9 of 27
Thread Starter 
Well I was figuring I'd need two power sources simply because the CPU and Motherboard alone require over 800 mhz.

Could you also take a look at this for me?

http://www.overclock.net/ati/895242-...l#post11736117
    
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post #10 of 27
Quote:
Originally Posted by stealtrecon View Post
Well I was figuring I'd need two power sources simply because the CPU and Motherboard alone require over 800 mhz.

Could you also take a look at this for me?

http://www.overclock.net/ati/895242-...l#post11736117
Do you mean that they require over 800 watts? Is it because it's a dual-CPU socket motherboard? I don't know server stuff at all.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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