How much power to run 2 Nvidia 7900's in SLI mode.?
398785
Each Card not only needs its own power source equivalent to 2 molex plugs with adapter, but the motherboard needs an additional plug too. Together this is 5 molex plugs. The best bet is to get an SLI ready power supply which start at 500W.\nAn SLI ready supply will have 2 special PCI-E connectors so you don't need the 2-molex to PCI-E adapter. This Antec is proably the cheapest you would want to go with over a grand of video cards in a computer:\nhttp://www.newegg.com/Product/Product.asp?Item=N82E16817103931\nThe best brand to get would be a Power PC and Cooling:\nhttp://www.newegg.com/Product/Product.asp?Item=N82E16817703001
996244
nVidia's dual vga card technology is called SLI (scalar link interface) which comes in 2 flavors: SLI x16, and standard SLI. SLI is connected by an external bridge chip on top of the 2 vga cards although depending on the motherboard, it could be optional. SLI x16 has more bandwidth than standard SLI but no games today need that kind of bandwidth.\n\nATI's dual vga card technology is called Crossfire. it is connected by an external wire outside of the case. however, ati is developing a similar bridge to nvidia's. all Crossfire boards are x16. there are no "standard" crossfire. Crossfire does not need identical cards while SLI does. but, it will only run as fast as the slowest card so either way, same thing.\n\nperformance for both are pretty much the same, and it depends on the cards being connected.
102130
Download and run "Coolbits 2.0" Click OK twice.\nIt's a registry entry which unlocks the hidden overclocking features built into the forceware drivers.\n\nATITool 0.25 Beta 10+ also works fine for overclocking nVidia cards, although when you're trying to find the maximum core overclock, it starts from your 2D setting - just annoying. You can use ATITool to scan for artifacts (errors).\n\nThe new "Detect Optimal Frequencies" button (after running Coolbits 2.0) dosen't always find the right clock speeds. For example, my XFX 7800GT (450/1050mhz stock) was supposed to have an optimal core overclock of 474mhz. Although the card wouldn't run anything properly unless I set it back to 469mhz. At the moment, I have my 7800GT running at 465/1200mhz nice and stable.\n\nHave Fun.
381485
High-end rigs use two video cards, but not to display two different things, like all of the people who posted above me think you're wanting to do.  The two video cards (the process is called SLI) display half of what you see on the screen at any one time.  For instance, card #1 always displays lines 0-1024, while card #2 always displays lines 1-1023.  That's faster, for gaming, but it's not really needed today.\n\nHere's what I would recommend you buy, for gaming, if you got lots of money to burn: http://www.newegg.com/Product/ProductList.asp?Submit=ENE&N=2010380048+1067920129&Subcategory=48&description=&srchInDesc=&minPrice=&maxPrice=  Any of those cards will do any of the newest games, at high resolutions, with high framerates.  If you don't have $300 for one card (BTW, SLI would cost more, since you'd need to buy two cards, and wouldn't necessarily give you more performance, if you bought 2 slower cards), anyway, here's what I would get (these are the best value for the money): http://www.newegg.com/Product/ProductList.asp?Submit=ENE&N=2010380048+1067918888+1069609641&Subcategory=48&description=&srchInDesc=&minPrice=&maxPrice= or: http://www.newegg.com/Product/ProductList.asp?Submit=ENE&N=2010380048+1067920131+1069609641&Subcategory=48&description=&srchInDesc=&minPrice=&maxPrice=  \n\nIf you're only wanting to run "dual desktops", just buy yourself any of these cards, you'll save yourself quite a bit of money: http://www.newegg.com/Product/ProductList.asp?Submit=ENE&N=2010380048+1069609642&Subcategory=48&description=&srchInDesc=&minPrice=&maxPrice=\n\nedit: No, your Dell isn't SLI compatible.
682077
I have the same SLI setup as you.  First and always update to the latest video drivers.  An easier way to verify if it's enabled or not is to bring up the Display Properties, click settings, click advanced, click the tab that says "GeForce 7800 GTX".  Then click "SLI multi-GPU" from the menu on the left, and check "Enable SLI multi-GPU" if it isn't already, and click Apply or OK.  If if wasn't checked and you hit OK or apply, then you might breifly see the top or bottom half of the screen disappear.  That's normal, because one card draws the top, and one draws the bottom.  The SLI Connector is what keeps the cards and display sychronized.  After it's enabled, try playing a graphic heavy game and see the difference in performance.
222692
If you're going to use Linux, you won't find any difference between a 754 socket processor and a 939 socket one. Many Linux distributions still don't recognize the 939 socket! Sli comes from Scalable Link Interface and it means that you can put two video cards of the exact type on the same motherboard! It doesn't mean it will double your pc performance, but it's pretty close! :). On Linux the SLI feature is disabled for now, as far as I know. nVidia is still working on this issue and I hope they will find a solution soon. Linux will run on a SLI system but will only use a single video card! :(. \nReasons for 939 socket:\n- 754 socket processors will dissapear soon!\n- you can't place a PCI express video card on a 754 socket processor!\n- 939 consums less energy.
427013
this may be a silly question, but the msi cards are pci-e and not AGP? there should be a small row of pins on the top of the card. I believe you will need to be able to  attach the sli bridge to get the 6600's to work in sli mode
540700
Similar to the way a CPU has a pipeline filled with small stages that each do a single task quickly, so too does the GPU in your video card. \nWhat this does is take a large task, and break it down into smaller stages.  This allows you to do multiple things at once and make your overall clock speed equivalent to the slowest of those stages. \n\nPipelined GPU:\n    * Wash\n    * Wash->Dry\n    * Wash->Dry->Fold\n    * Dry->Fold\n    * Fold\n\nThe more pipelines a video card contains, the faster and better the image will be processed and rendered. Thats why SLI is so efficient.
27524
400 Watt should do fine.  If you have more then 2 hard drives, go to 450 Watt.
805530
ATI   FireGL V3100  PCI Express    \nOutput 1  Output 2 VGA  \nMAX DVI 2048 x 1536 \nMax Analog 2048 x 1536 \n128MB\n$215
1136782
1x Geforce 7950GX2.\n\nIn numerous benchmarks out there, both perform pretty much on par with each other.  The hardware is essentially the same with just one specific difference; the 7950 GX2 doesn't have to go through another PCIe bus to access the second GPU.  \n\nThe speed difference is, for the most part, negligible though.  Keep in mind that the 7950 GX2 is really two GTX GPUs that are underclocked to help keep control of heat.  Depending on which vendor you buy your 7950 GX2 from, they might be attaching a heftier cooling solution and overclocking the card yet again.\n\nHope this helps!
1029440
No such thing as too much, man. Your computer is perfect for that kind f gaming. The 7900 GT might not be as good as your current configuration.
124936
Scalable Link Interface (SLI) is a method for linking two (or more) video cards together to produce a single output. It is an application of parallel processing for computer graphics, meant to increase the processing power available for graphics. An initial version of this technology (called Scan Line Interleave) was introduced by 3dfx in 1998 and used in the Voodoo 2 line of graphics accelerators. NVIDIA Corporation reintroduced the technology in 2004, and intends for it to be used in modern computer systems based on the PCI Express bus.
356361
You don't, the other or extra card is used by the motherboard to for extra graphics processing power. Techweb defination : (Scalable Link Interface) A multi-GPU interface from NVIDIA for connecting two or four NVIDIA display adapters together for faster graphics rendering on one monitor or two monitors. SLI machines require adjacent PCI Express slots, NVIDIA's Media and Communications Processor (MCP) on the motherboard and identical SLI-certified NVIDIA display adapters. Such adapters come with an SLI connector that connects one card with the other.
641275
I'd get another 512MB to make 1GB of ram but other than that, I think you're good.  As far as the graphics card, I'd consider it a stop gap between now and when the DirectX 10 hardware comes out.  If you can afford a little more I would either get two 7600GS cards for an SLi configuration or get one 7600GT.  The 7600GT outperforms a single 7600GS but if you have two 7600GS cards in an SLi configuration, you'll have performance close to a 7900GT.\n\nDon't even think of stepping down to the 9600xt (not that you could, I don't think there is a PCIe version of that card) but the 9600xt falters on every modern benchmark, 3Dmark05 and 3Dmark06, it's not even worth running those benchmarks on the card, it'll show its age and that is not a good thing.\n\nThe X800 isn't a bad card but it will show its age in 3Dmark06 because it lacks support for both HDR and Shader Model 3.0.  Stick with the 7600GS or 7600GT and don't let anyone tell you otherwise.
25756
Aside from the standard functions of a motherboard - providing support for the CPU, RAM, hard drive(s), optical drive(s), and other internal and external busses for conecting peripherals, SLI is a technology developed by Nvidia to allow to matching video cards to be installed and work cooperatively to deliver higher performance.  See the website below for more information.
679867
a video card that supports two monitors. NVIDIA or RADEON