Title: Two GPU's Post by: sLide. on March 29, 2013, 11:16:29 PM I have a 6970 GPU in my tower.
I recently bought a 6870 to mine with. Both cards are powered and plugged into my MSI MoBo. I can't seem to get the 6870 to install drivers, or be recognized by device manager. Any help? Thanks! ??? Title: Re: Two GPU's Post by: camaro69327 on March 30, 2013, 12:16:35 AM It would help to tell more about your System for starters..But anyway. I just recently built a rig. and Being from the Nvidia camp the AMD stuff is new for me. Was surprised that even tho I have swapped in and out 4 different cards on this new board they all have just worked. Use one card get a good Driver install going. Then add in another card. I was swapping back and forth between. 1) MSI 7970 2) MSI 7870 3) XFX 6870 4) Sapphire 6870 Each time I reentered Windows it would "Found new Hardware" and ask for a restart. After restart new card would be their. TO sum up. The drivers are already installed. When you shut down , install a card , start windows , it should find and recognize the card. It will ask for a restart. Forget Device manager, Get and install MSI afterburner, great to clock (under\over) or just monitor temps... Now, if your not using windows.....well you didn't say that....lol Title: Re: Two GPU's Post by: lunokhod on March 30, 2013, 12:24:53 AM Not meaning to hijack... but hopefully this is relevant in a Two GPU thread.
I take it that multiple video cards in a mining rig do not need to be identical nor do they need to be linked via crossfire... is this assumption correct? Lunokhod Title: Re: Two GPU's Post by: Fiyasko on March 30, 2013, 12:27:24 AM I have a 6970 GPU in my tower. I recently bought a 6870 to mine with. Both cards are powered and plugged into my MSI MoBo. I can't seem to get the 6870 to install drivers, or be recognized by device manager. Any help? Thanks! ??? The 6870 probobly is not "booting" Plug in a monitor (it must be on) or "dummy plug" into the 6870 when booting the computer while the 6970 is still fully hooked up, Try that (doing this should not be neccessary, but some people for whatever reason need to do it) Title: Re: Two GPU's Post by: camaro69327 on March 30, 2013, 12:34:23 AM Not meaning to hijack... but hopefully this is relevant in a Two GPU thread. Correct.I take it that multiple video cards in a mining rig do not need to be identical nor do they need to be linked via crossfire... is this assumption correct? Lunokhod 2 rigs here ...Been swapping back and forth to get a happy medium between speed and Heat. Found this to be the best combo: Rig one. 6870 (Monitor pluged into) & a 7970 Rig two = 6870 (monitor) & a 7870 Win7 X64 NO Crossfire (it slows the hash rate down) Title: Re: Two GPU's Post by: sLide. on March 30, 2013, 12:46:16 AM It would help to tell more about your System for starters..But anyway. I just recently built a rig. and Being from the Nvidia camp the AMD stuff is new for me. Was surprised that even tho I have swapped in and out 4 different cards on this new board they all have just worked. Use one card get a good Driver install going. Then add in another card. I was swapping back and forth between. 1) MSI 7970 2) MSI 7870 3) XFX 6870 4) Sapphire 6870 Each time I reentered Windows it would "Found new Hardware" and ask for a restart. After restart new card would be their. TO sum up. The drivers are already installed. When you shut down , install a card , start windows , it should find and recognize the card. It will ask for a restart. Forget Device manager, Get and install MSI afterburner, great to clock (under\over) or just monitor temps... Now, if your not using windows.....well you didn't say that....lol My MoBo is a MSI Z77A-GD55. I'm using a XFX 6970 which was previously in my desktop and worked 100%. (Still working 100% with both cards in) The new addition is a XFX 6870 which I've tried to boot the computer off of sololy (Toke out the 6970 and plugged just one monitor into the top DVI port) I also make sure the two 6 pin power connectoers were fully plugged in. I just tried the, one active monitor being plugged into the 6870 while the other's were still plugged into the 6970. This didn't work for me. When I pull up system information, this is what I get under Components > Display: Name AMD Radeon HD 6900 Series PNP Device ID PCI\VEN_1002&DEV_6718&SUBSYS_31301682&REV_00\4&2D1605AF&0&0008 Adapter Type AMD Radeon Graphics Processor (0x6718), Advanced Micro Devices, Inc. compatible Adapter Description AMD Radeon HD 6900 Series Adapter RAM (2,147,483,648) bytes Installed Drivers aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll Driver Version 9.12.0.0 INF File oem39.inf (ati2mtag_NICayman section) Color Planes Not Available Color Table Entries 4294967296 Resolution 1920 x 1080 x 60 hertz Bits/Pixel 32 Memory Address 0xE0000000-0xFEAFFFFF Memory Address 0xF7E20000-0xF7E3FFFF I/O Port 0x0000E000-0x0000E0FF IRQ Channel IRQ 4294967294 I/O Port 0x000003B0-0x000003BB I/O Port 0x000003C0-0x000003DF Memory Address 0xA0000-0xBFFFF Driver c:\windows\system32\drivers\atikmpag.sys (8.14.1.6290, 540.00 KB (552,960 bytes), 12/19/2012 11:32 AM) Yet, the 6870 doesn't show in device manager, nor does it show when I search for new hardware. I am currently using 13.1 CCC if that helps. Title: Re: Two GPU's Post by: sLide. on March 30, 2013, 01:35:20 AM I found the resolution. Thanks!
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