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| SLI | ||
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| Kamikazi Watermelon |
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Bitch
Registered Member #20
Joined: Mon Nov 21 2005, 08:06PMPosts: 98 |
ok so i just upgraded my computer with another 7800 GT so i am running 2 in SLI. But before i installed it me being the complete genius i am accidentally almost fucked up the 2nd card. How you my ask? well since the card is re-certified from EVGA, i plugged the new one in by itself to see if it worked fine. So on goes the computer and it works fine until i accidentally changed the resolution to high and the monitor when pfffftt on me. So with much trouble me and my dad plugged both into SLI mode with the working card as the primary hoping it would restore to the normal resolution and it did. But for some reason my computer seems to be running a little choppy and i havent seen any improvement in FPS. I was wondering if my processor cant keep up with the 2 vid cards and same with the ram. my rig AMD 64 3200+ 2.0 GHZ Dual EVGA nvidia 7800 GT 256 mb dont laugh at the ram 256 pc2300, 256 pc2700, and two 256 pc3200 = 1 GB total please if you have any thoughts on waht might cause it and if i need to upgrade everything else. Im probably gonna go to either 2 or 2.5 GB of PC3200 and either a AMD 64 X2 4800+ or a 4600+ |
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| creativenate88 |
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Registered Member #545
Joined: Sun Jan 21 2007, 08:11PMPosts: 263 |
um with SLI a BIG problem is energy consumption. Take a look at how much power ur drawing and how much ur putting out. Thats all I can think of for now. But when I was looking at building a rig i noticed that alot of newer parts are "SLIE certified" so as you say maybe the ram cant hold up to the challenge. that is another possibility. | ||
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| jigg4joe |
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Registered Member #326
Joined: Wed Jul 05 2006, 04:15AMPosts: 635 |
definitely make sure you have enough power for that, at least 500W preferebly 600+. i dunno how familiar you are with installing stuff, so i'm just going to list things that come to mind. does your board have an extra 12V plug on it, next to or around the video cards? does your board have a switch or card that needs to be switched when using SLI? are both of your cards the EXACT same model AND vendor? how far apart did you purchase the two cards? did you enable SLI-mode with the nVidia program? does your device manager recognize both cards? do the cards have a PCI-E power plug on them? hopefully, most of your answers are 'yes'. if the two cards were purchased a month apart or more, they will probably be from different batches. even though they have they same model and vendor, different batches have minor changes that can affect the stability of running in SLI mode. just like when you buy 'matched' RAM. |
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| kevin |
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AKA cupcake
Registered Member #374
Joined: Fri Aug 04 2006, 03:38AMPosts: 858 |
if you can, get a 4400 instead of the 4600. I know AMD doesn't make em anymore, but it's exactly the same as the 4800 except 200mhz slower. | ||
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| nostie |
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Registered Member #185
Joined: Thu Mar 30 2006, 10:42PMPosts: 3167 |
what's your Front Side Bus speed? if you don't know, check with belarc @ -[link]- that'd be a problem for me if i got a new card ( my fsb runs as 200 mhz ) That could well be t3h problem |
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| jigg4joe |
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Registered Member #326
Joined: Wed Jul 05 2006, 04:15AM Posts: 635 |
FSB is for communicating with RAM. SLI communicates over PCI-E to the southbridge, then to the cpu. plus, he's using AMD and they don't use an FSB anymore. The memory controller for AMD is on the cpu itself and uses HyperTransport to communicate with the RAM. Edited Sun Mar 11 2007, 05:12AM |
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| creativenate88 |
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Registered Member #545
Joined: Sun Jan 21 2007, 08:11PM Posts: 263 |
im gonna go with lo power....lol i bet hes just shy of enough power...thats why it runs but is choppy...they selll seperate power supplies for SLI | ||
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| Kamikazi Watermelon |
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Bitch
Registered Member #20
Joined: Mon Nov 21 2005, 08:06PM Posts: 98 |
i think my power supply is 500 or 550 not sure, im not sure about any of those questions except yes to the nvidia program activating it, i bought them like nearly a year apart but both from EVGA, checked the specs and they run at the same speeds, and my FSB i think is 1 GHZ | ||
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| jigg4joe |
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Registered Member #326
Joined: Wed Jul 05 2006, 04:15AM Posts: 635 |
i honestly think the fact that you bought them a year apart is the root of your problem. double check your motherboard for any extra power connections. actually, if you could just tell me what motherboard you have i will get a better idea. |
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| Kamikazi Watermelon |
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Bitch
Registered Member #20
Joined: Mon Nov 21 2005, 08:06PM Posts: 98 |
i have the EVGA nForce 4 SLIx16 motherboard | ||
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