- Joined
- Jun 5, 2014
- Messages
- 40 (0.01/day)
- Location
- Helsinki
Processor | Ryzen 7 3800x |
---|---|
Motherboard | MSI MEG X570 UNIFY |
Cooling | Noctua NH-D15 chromax.black |
Memory | G.Skill Ripjaws V 2x16GB DDR4 3200MHz |
Video Card(s) | Asus ROG Strix RTX 2070 Super OC, GPU Boost Clock +70MHz |
Storage | Samsung 970 Evo Plus 1TB system drive, Samsung 960 Evo 500GB |
Display(s) | Asus MG279Q |
Case | Phanteks Eclipse P600S White |
Mouse | Corsair Nightsword RGB |
Keyboard | Corsair K65 Lux RGB |
Software | Windows 10 Pro |
Hi all!
I have two identical Radeon HD 7870XT graphics cards, which were installed in PCI-EX16_1/2 slots on this motherboard in CrossFire configuration. Yet in motherboard BIOS, the link speed for one graphics card was x8 and link speed for the other was only x2. For CrossFire configuration to work, both graphics cards should work at the same speed.
These graphics cards worked flawlessly in CrossFire configuration on my old Asus P7P55D Pro motherboard right up to the moment I installed them on this new motherboard. I did everything what end-user would be
expected to do to make it work: reseated graphics cards and switched their places, reseated CPU, cleared CMOS by removing and placing the battery back, updated motherboard's firmware, even changed graphics card connectors on my modular be-quiet Power Zone 850W power supply.
I returned this motherboard to retailer for replacement assuming there might be a problem with lower red PCI-E slot or with CPU socket and PCIX controller wasn't working correctly. The retailer claims their Asus support staff tested my motherboard with two nVidia GTX 780 cards in SLI and AMD Radeon 280 in CrossFire and that both PCI-E slots woked at x8 speed in the following setup (Intel Core i3-4130, 2x4GB G.Skill DDR3 1600Hz, Corsair TX850W, WD Green 2TB, Windows 8.1 x64).
What could be the reason my graphics cards do not work in sync? Could there be compatibility problem between my graphics cards and this particular motherboard? Would it help if I updated graphics cards' firmware. Where I could get newer version of their firmware and how I could do it?
My system:
Motherboard Asus Maximus VII Hero
Graphics cards Club 3D Radeon HD 7870XT (Tahiti LE)
Processor Intel Core i7-4790K
Memory 2x8GB Corsair Vengeance DDR3 1866MHz
Power supply be quiet! Power Zone 850W
Operating system Windows 7 Home Premium x64
Graphics cards and CPU are watercooled.
I would appreciate any help in solving this mystery.
I have two identical Radeon HD 7870XT graphics cards, which were installed in PCI-EX16_1/2 slots on this motherboard in CrossFire configuration. Yet in motherboard BIOS, the link speed for one graphics card was x8 and link speed for the other was only x2. For CrossFire configuration to work, both graphics cards should work at the same speed.
These graphics cards worked flawlessly in CrossFire configuration on my old Asus P7P55D Pro motherboard right up to the moment I installed them on this new motherboard. I did everything what end-user would be
expected to do to make it work: reseated graphics cards and switched their places, reseated CPU, cleared CMOS by removing and placing the battery back, updated motherboard's firmware, even changed graphics card connectors on my modular be-quiet Power Zone 850W power supply.
I returned this motherboard to retailer for replacement assuming there might be a problem with lower red PCI-E slot or with CPU socket and PCIX controller wasn't working correctly. The retailer claims their Asus support staff tested my motherboard with two nVidia GTX 780 cards in SLI and AMD Radeon 280 in CrossFire and that both PCI-E slots woked at x8 speed in the following setup (Intel Core i3-4130, 2x4GB G.Skill DDR3 1600Hz, Corsair TX850W, WD Green 2TB, Windows 8.1 x64).
What could be the reason my graphics cards do not work in sync? Could there be compatibility problem between my graphics cards and this particular motherboard? Would it help if I updated graphics cards' firmware. Where I could get newer version of their firmware and how I could do it?
My system:
Motherboard Asus Maximus VII Hero
Graphics cards Club 3D Radeon HD 7870XT (Tahiti LE)
Processor Intel Core i7-4790K
Memory 2x8GB Corsair Vengeance DDR3 1866MHz
Power supply be quiet! Power Zone 850W
Operating system Windows 7 Home Premium x64
Graphics cards and CPU are watercooled.
I would appreciate any help in solving this mystery.