I need to build a powerful Graphics-Workstation (Windows7-64 prof.) for Video editing.
WS shall be equipped with one professional graphics controller (PCIe 16x) and 2x LSI MegaRAID-9270-8i controllers (both at PCIe 8x) reuslting in two RAID5-Arrays consisting of 8 drives each.
The workload is as follows: Large files 2-6GB+ (sometimes several) are read from any of the 2 LSI MeagRAIDs while (often at the same time) Video-sequences are cut, pasted, rendered etc..
No other PCIe slots will be used.
I find it hard to find a suitable motherboard that supports PCIe Version 3 without bandwidth limitation on any of the PCIe-lanes or slots.
Which Motherboard(s) would conform to (or best meet) the setup described?
Chipset Z87 supports PCIe Ver 3, but most boards I've seen multiplex the lanes with a PEX8747 chip.
AFAIK Chipset X79 supports PCIe Ver 2.
However, I would think the primary bottleneck might be the disk-write-speed (despite an 8-drive RAID5-array). Therefore a MoBo with PCIe Ver 2 would probably do the job as well.
But which one?
Any other thoughts or suggestions?
Your advice is highly appreciated.