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PCI-E explanation
Hey guys
I am a bit confused about the specifications of PCI-E x? slots,and was hoping you could help me.
I am looking to exchange my mainboard and need 2 PCI-e 2.0 x8 slots to run my sas controllers on,and was looking at this mainboard ASRock > Z77 Pro4-M
Now,my retailer has this board specified as having:
1 x PCIe 3.0 x16
1 x PCIe 2.0 x16
1 x PCIe 2.0 x16
1 x PCIe 2.0 x1
Which clearly shows it has the 2 slots i need,HOWEVER on Asrock homepage under specifications for the mainboard they have it listed like this:
- 1 x PCI Express 3.0 x16 slot (PCIE1: x16 mode)
- 2 x PCI Express 2.0 x16 slots (PCIE3: x1 mode; PCIE4: x4 mode)
- 1 x PCI Express 2.0 x1 slot
So,what exactly does that mean (PCIE3: x1 mode; PCIE4: x4 mode)???
Can this board use 2 sas pcie x8 cards at the designated speed?
I was looking at this Supermicro | Products | Motherboards | Xeon® Boards | X9SCL-F but it is 3 times as expensive,as i also have to exchange my ram then.