It all depends on what the board is meant for. But gamer boards will go for graphics slots (SLI and/or Crossfire configs) to get customers after higher frame rates. cards used in such systems tend to be 8x lane cards). It's the lane count and target usage that limits the slot configurations (why servers tend to go for 8x lane slots, as RAID, FC. IT's still faster than SATA 3.0Gb/s and USB 2.0, but it's not giving you the full bandwidth the tech is supposed to be able to do.Īs per the MP, you might want to be aware, that the board's not as special as you might think, as Slots 3 & 4 share the same 4x lanes via a PCIe switch located on the backplane board (the chipset only has 36 lanes, and the graphics slots take up 32 of them). 1x lane per port, and at best, can only transfer 500MB/s, not the full band the port tech is capable of ~540MB/s for SATA 6.0Gbs real world, or 625MB/s for USB 3.0). I just wanted to let you know, that the currently available controller chips are gimped as a compromise to do with the PCIe lanes (i.e. Click to expand.I know the ASUS card is 4x lanes (Gen 2.0 compliant).
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