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Message boards : Graphics cards (GPUs) : Request.....dual gpu non-SLI step by step instructions.

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Message 19607 - Posted: 22 Nov 2010 | 13:53:36 UTC

Greetings.

Could one of you clever chaps offer step by step instructions on what I need to do to crunch with 2 460's in a single non-SLI rig please?

EG,Driver installation and any code I have to input to run dual GPUgrid instances in the same box.

Would be much appreciated.

(I need to lower my box count).
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Message 19608 - Posted: 22 Nov 2010 | 14:24:07 UTC - in response to Message 19607.

Hi vaio,
You only need to have a motherboard with two PCIE slots. It does not need to be SLI capable.

Do you already have one GTX460 installed in such a system?
If so it's very straight forward:

Shut down your system and unplug the power from your computer. Physically install the additional card. Turn on and boot the computer - the driver should automatically install, if you already have the 260.99 driver (Windows) and one GTX460 installed.

I don't think you need to tell Boinc to use both cards if you have the latest driver and are using Boinc 6.10.58, but should you need to you can read how to here - it's just a matter of creating or editing a cc_config.xml file and adding a few lines. The thread also contains a few other useful tips such as how to report tasks immediately, freeing up a CPU core/thread, and using swan_sync.

Note that this is for Fermi cards. It is not as simple for GT240's or CC1.1 cards trying to crunch on the 6.12app.

Good luck,

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Message 19611 - Posted: 22 Nov 2010 | 15:13:53 UTC - in response to Message 19608.

Thank you.

I already have the cards but in separate machines.
Just purchased a dual slot motherboard and am awaiting a psu with more muscle.

The thing that confuses me is when posts say to edit this and edit that as when I look in my Boinc folder I can't even find the folders/files folk are saying to edit.

Anyway, will give it a whirl when the psu arrives.

I have a 650 supply at the moment which may have enough muscle to test things but not to actually run things so will wait for my 850 to arrive.
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Message 19613 - Posted: 22 Nov 2010 | 16:19:55 UTC - in response to Message 19611.

To see the folder/file it depends on operating system version, but its along the lines of,

Open Windows Explorer, select Folder options, View,
check the show hidden files and folders option,
uncheck hide extentions for known file types,
click Apply to all folders.

You can also paste the folders address into Explorer (or from run) and it will open the hidden folder. On Vista and Win7 you can just type in the file name into the "start search" box and it should find it.

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Message 19620 - Posted: 22 Nov 2010 | 17:30:58 UTC - in response to Message 19611.
Last modified: 22 Nov 2010 | 17:33:56 UTC

I have a 650 supply at the moment which may have enough muscle to test things but not to actually run things so will wait for my 850 to arrive.

A GOOD QUALITY 650 watt PSU should easily handle your 2 GTX 460 cards. So will a good quality 850 watt.
Antec, Corsair, Seasonic, Enermax, PC Power & Cooling, some Thermaltake to name a few.
Edit: As an example a poor quality 750 is inferior to a good quality 500.

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Message 19636 - Posted: 23 Nov 2010 | 2:21:04 UTC - in response to Message 19620.

Thanks guys.

Beyond, I am currently using a Corsair 650 TX which I shall utilise in 5770 Crossfire setup.

Using a decent 850 for these to allow for extra clocks, I like to have the reassurance of some headroom.

I already have a Corair 850 but that is happily feeding my 920 and Crossfired 5830's.

Still hoping for an ATI app.
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Message boards : Graphics cards (GPUs) : Request.....dual gpu non-SLI step by step instructions.