I was looking at doing a gtx 970 sli setup for 4k or 1440p and my concern is that my motherboard will bottleneck the cards through the PCI-e bus. My motherboard allows for 1X16 or 2X8 setups but not 2X16 (which I assume means it has 16 lanes). Can 16 PCI-e 3.0 lanes support two higher end cards without serious bottlenecking?
Bottleneck through PCI-e bus with gtx 970 sli?
- Thread starter SHODAN355
- Start date
Solution
iam2thecrowe
Glorious
- Jul 4, 2010
- 10,591
- 21
- 44,965
yes, 2x8 lane pcie3 is still plenty of bandwidth. 8x pcie 3 is equivelant to 16x pcie 2.
The core i5 3570K has 16 lanes PCI-E 3.0.
Your mother board is splitting this available bandwidth between two PCI-E 3.0 x16 slots, hence each runs at PCI-E 3.0 x8 speed.
This is more than enough bandwidth for any available single GPU card.
Your mother board is splitting this available bandwidth between two PCI-E 3.0 x16 slots, hence each runs at PCI-E 3.0 x8 speed.
This is more than enough bandwidth for any available single GPU card.
Ivan Rosic
Reputable
- Nov 9, 2014
- 20
- 0
- 4,510
yes and no .... its not MBO its your CPU even tough MBO can have 2x16 pci-e 3.0 CPU's supports only 16 lines .... there is solution you can get x99 MBO whit i7 - 5960x who supports 40 pci-e lines( http:// ), i7 - 5930K who using 40 lines to but have 6 cores and 12 threads instead 8cores and 16 threads like stronger one (but this one use higher cloak speed so its more recommended for gaming), ... thers 1 more i7 5820 who using only 28 lines so hes not some solution for your problem ... ofc they cost a lot ... actually those are most expensive processors. All LGA 1150 CPU's suport only 16 lines so even if MBO somehow have 2x 16 3.0 pci-e it wont go above 2x8
TRENDING THREADS
-
-
Question New installed W11 on sdd, D drive (HDD) goes to the 100% in seconds
- Started by Emily_Vin
- Replies: 8
-
-
Latest posts
-
-
-
Question Issues with USB3 hub chained from Thunderbolt dock ?
- Latest: jauntysquirrel
-
-
Facebook
Twitter
Instagram