Hi, i just built a new rig. I put in two Visiontek 4850s, on a Gigabyte MA790X board. The specs for the board state that the two slots are indeed both x16, however when i look in my catalyst settings it claims they are only at x8. Anything i run (gaming-wise) runs laggy, and falls apart of crashes after a short while. I flashed the BIOS and there doesn't seem to be any other things i can think of to remedy the situation.
I run:
AMD 9850 2.5Ghz
Gigabyte GA MA790X-DS4
8.0GB Corsair DDR2
CrossfireX Visiontek 4850s
Running Vista-64bit, and FedoraCore 9
And this is the output i get in Catalyst Control
Primary Adapter
Graphics Card Manufacturer Built by ATI
Graphics Chipset ATI Radeon HD 4800 Series
Device ID 9442
Vendor 1002
Subsystem ID 0502
Subsystem Vendor ID 1002
Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x8
BIOS Version 011.003.000.000
BIOS Part Number 113-B50102-103
BIOS Date 2008/05/23
Memory Size 512 MB
Memory Type GDDR3
Core Clock in MHz 625 MHz
Memory Clock in MHz 993 MHz
Total Memory Bandwidth in GByte/s 59 GByte/s
Linked Adapter
Graphics Card Manufacturer Built by ATI
Graphics Chipset ATI Radeon HD 4800 Series
Device ID 9442
Vendor 1002
Subsystem ID 0502
Subsystem Vendor ID 1002
Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x8
BIOS Version 011.003.000.000
BIOS Part Number 113-B50102-103
BIOS Date 2008/05/23
Memory Size 512 MB
Memory Type GDDR3
Core Clock in MHz 625 MHz
Memory Clock in MHz 993 MHz
Total Memory Bandwidth in GByte/s 59 GByte/s
Thanks for any help.
I run:
AMD 9850 2.5Ghz
Gigabyte GA MA790X-DS4
8.0GB Corsair DDR2
CrossfireX Visiontek 4850s
Running Vista-64bit, and FedoraCore 9
And this is the output i get in Catalyst Control
Primary Adapter
Graphics Card Manufacturer Built by ATI
Graphics Chipset ATI Radeon HD 4800 Series
Device ID 9442
Vendor 1002
Subsystem ID 0502
Subsystem Vendor ID 1002
Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x8
BIOS Version 011.003.000.000
BIOS Part Number 113-B50102-103
BIOS Date 2008/05/23
Memory Size 512 MB
Memory Type GDDR3
Core Clock in MHz 625 MHz
Memory Clock in MHz 993 MHz
Total Memory Bandwidth in GByte/s 59 GByte/s
Linked Adapter
Graphics Card Manufacturer Built by ATI
Graphics Chipset ATI Radeon HD 4800 Series
Device ID 9442
Vendor 1002
Subsystem ID 0502
Subsystem Vendor ID 1002
Graphics Bus Capability PCI Express 2.0
Maximum Bus Setting PCI Express 2.0 x8
BIOS Version 011.003.000.000
BIOS Part Number 113-B50102-103
BIOS Date 2008/05/23
Memory Size 512 MB
Memory Type GDDR3
Core Clock in MHz 625 MHz
Memory Clock in MHz 993 MHz
Total Memory Bandwidth in GByte/s 59 GByte/s
Thanks for any help.