Go Back   Computer Forums > General Computing > Hardware
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-23-2007, 05:42 PM   #11
Fully Optimized
 
CompMan's Avatar
 
Join Date: Aug 2006
Posts: 3,323
Send a message via AIM to CompMan
Default Re: 2 different video cards in SLI

Yeah I would rather have one more powerful card.
__________________

__________________
|Intel Q6600@3.0ghz||ASUS MAXIMUS FORMULA||2GiG Corsair XM2 DDR2 800||EvGa 8800GTS||36gig Western Digital Raptor 10,000 rpm||Ultra X2 connect 550W modular psu||Thermaltake Tsunami Case|Vista 64bit|
Windows has Blue screens, Mac has grey screens, and CF has White screens!!
2004 Mazda RX-8 GT Titanium Grey, Greddy Exhaust, AEM cold air intake
--objects in rearview get smaller with each shift--
CompMan is offline   Reply With Quote
Old 08-23-2007, 05:45 PM   #12
Fully Optimized
 
Join Date: Nov 2006
Posts: 3,629
Send a message via AIM to ߧ∩H♠H䎀
Default Re: 2 different video cards in SLI

Thats the difference between SLI/Crossfire. SLI must have 2 of the same card type to work. Again in Vista it seems to be hit and miss currently as far as it working. So some games it may work for some it may not.

Now with crossfire you can mix and match cards as long as the primary card has the spec's to handle the second card. IE X1950 in the main PCI-E slot then a X1650 in the second slot would work. Plus some of the compatibility issues are not there.
__________________

ߧ∩H♠H䎀 is offline   Reply With Quote
Old 08-23-2007, 07:46 PM   #13
Fully Optimized
 
esa193's Avatar
 
Join Date: Aug 2006
Posts: 4,210
Send a message via AIM to esa193
Default Re: 2 different video cards in SLI

cards work in lie as long as they have the same core
other wise nope
__________________
antec 900, q6600, 4G, 500G, 160G, 9800gtx, 780i, 47in 1080ptv, 5.1 surround sound

MacArthur wrestling pwns!
esa193 is offline   Reply With Quote
Old 08-23-2007, 08:00 PM   #14
Daemon Poster
 
allenn812's Avatar
 
Join Date: Jun 2005
Posts: 935
Default Re: 2 different video cards in SLI

Quote:
Originally Posted by esa193 View Post
cards work in lie as long as they have the same core
other wise nope
A 8800GTS 640mb and a 8800GTS 320MB wont work in sli together and they have the same core. Even when the 8800GTS 640mb is flashed with a 8800GTS 320mb bios.
__________________
Intel Core 2 Duo E6600 Oc'd to 2.9ghz
ECS 570 SLIT Motherboard
2 gig of Corsair ddr2 677
Western Digital 250 Gig HD
Evga 8800GTS 640mb Oc'd to 615/1000
allenn812 is offline   Reply With Quote
Old 08-23-2007, 09:14 PM   #15
Omnipotent One
 
Atomic Rooster's Avatar
 
Join Date: Apr 2006
Location: USA
Posts: 11,161
Send a message via AIM to Atomic Rooster Send a message via Yahoo to Atomic Rooster
Default Re: 2 different video cards in SLI

allenn812 -
You can run the two cards you specified in SLI.

From the Nvidia SLI Zone FAQ:
Quote:
Can I mix and match graphics cards with different sizes of memory?
While it is not recommended, NVIDIA does offer this flexibility using Coolbits. When purchasing a second graphics card, you should try to match the memory size so that you are ensured full value and performance from your purchase. For example, if your first card is a GeForce 6600 GT with 128MB of memory, you should purchase a second GeForce 6600 GT with 128MB of memory. However, using Coolbits (value set to 18), you can force both of the cards to use the lower of the two memory sizes and operate together in SLI mode. When dissimilar memory sizes are enabled to work together using Coolbits, the effective memory size for each card becomes the smaller of the two memory sizes.

Quote:
Can I mix and match graphics cards?
In order to provide optimal symmetric scaling, SLI technology requires the NVIDIA GPUs to match. For example, a GeForce 7800 GTX must be paired with another GeForce 7800 GTX. Likewise, a GeForce 6600 GT must be paired with another GeForce 6600 GT. However, using the latest Release 80 or later graphics drivers, NVIDIA GPUs sold by different manufacturers can be used together in an SLI configuration. For example, a GeForce 7800 GT from vendor ABC can be matched with a GeForce 7800 GT from vendor XYZ.
Atomic Rooster is offline   Reply With Quote
Old 09-12-2007, 08:09 AM   #16
Daemon Poster
 
Join Date: Dec 2004
Posts: 544
Default Re: 2 different video cards in SLI

Thanks to everyone for there comments. I havent had any problems running my 6600GTs in SLI on XPpro and i've had them fo close to 2 years. If i were to upgrade (and since its not possible to use to DIFFERENT cards in SLI) i would just get 1 more powerfule card, and then maybe down the line when prices decrease further mathc it with a second (but probably not).

Thanks.
__________________
AMD Athlon 64 3500+ [939 Socket] W/ ASUS "A8N-SLI Premium" (OC'd @2.4ghz) | 560W Silverstone Spider PSU | Kingston 1024 MB [512MB X2] DDR-400 PC3200 Memory | Dual MSI Nvidia GeForce 6600GT 128MB DDR3 128-bit PCIe @555/1111 in SLI | Samsung 19" LCD 930B (8ms) | Western Digital 200 GB SATA II (x2) | LG Dual Format/Double Layer 16X DVDR/RW + CD-R/RW Drive
d_source is offline   Reply With Quote
Old 09-12-2007, 09:34 AM   #17
BSOD
 
Join Date: Apr 2005
Posts: 6,556
Send a message via MSN to Rudster816
Default Re: 2 different video cards in SLI

no they have to be the exact same.
Rudster816 is offline   Reply With Quote
Old 09-12-2007, 11:31 AM   #18
Fully Optimized
 
Fisher's Avatar
 
Join Date: Aug 2005
Posts: 1,581
Default Re: 2 different video cards in SLI

Quote:
Originally Posted by freestyler105 View Post
No, you didn't. The cards have to have the same core. The 7300GS uses a G72 core, the 7600GT uses a G73 core. It's impossible to SLI those cards. You might have had both of them in the same computer, but they were not in SLI mode.

EDIT: That's what I thought..
so if the cards have the same core then you can run them in sli? e.g could you run an 8800 with a 8600?





EDIT: sorry should read all of the posts before asking a question. just saw my answer befrore
__________________
Core i7 2600K Sandybridge + Prolimatech Megahalems Cooler ₪ Asus P8P67 DELUXE ₪ G.Skill RipJawsX 8GB DDR3 1600MHz ₪ Crossfire 5870's ₪ OCZ GameXstream 850w ₪ X-Fi Fatal1ty FPS edition ₪ OCZ Vertex 3 120GB ₪ Antec P182 ₪ NAS ReadyDuo 4Tb ₪ BenQ FP241WZ 24" Widescreen LCD ₪ Windows 7 x64
Fisher is offline   Reply With Quote
Old 09-12-2007, 11:54 AM   #19
Golden Master
 
Join Date: Mar 2005
Posts: 13,091
Default Re: 2 different video cards in SLI

If you SLI them, it will not work, because the GPUs does not match. You'll have still two cards running, but it won't work together. It will process graphics individually.

Quote:
Originally Posted by allenn812 View Post
A 8800GTS 640mb and a 8800GTS 320MB wont work in sli together and they have the same core. Even when the 8800GTS 640mb is flashed with a 8800GTS 320mb bios.
Two happenings will occur: It will either stick to 640MB, or you'll end up with a dead card.
__________________

lhuser is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 11:45 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0