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my first sli setup.. using Maximus XI Formula. pcie question

kshafe777
Level 7
so, when i use two gpu's in sli, doe the max xi formula limit both to x8 now? or are they both x16 still? it seems to be x8 on both cards. any help would be appreciated. thanks
"Better to try and Fail, then not try at all" ~ Michael Jordan
favorite YouTuber - KDSTech - https://www.youtube.com/channel/UCz0zF8nTziWiBx3v6CNR3yw
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4 REPLIES 4

Phillyflyer
Level 10
kshafe777 wrote:
so, when i use two gpu's in sli, doe the max xi formula limit both to x8 now? or are they both x16 still? it seems to be x8 on both cards. any help would be appreciated. thanks


Cards will run 8x
Asus ROG Maximus XI EXTREME
Intel i7 9900K OC'D @ 5.2 GHZ @ 1.345V (1.296V LOAD) LLC 6 PRIME 95 STABLE 8 HRS
XSPC RX360 Rad (6)Scythe Gentle Typhoon 1850 RPM Fans In Push/Pull @ 1500 RPMS
Swiftech Drive II / Swiftech MCP35X Pump
Enermax Platimax 1200 Watt Power Supply
32GB G.Skill F4-3866C18Q-32GTZR 3866 MHZ CL18 1.35V (OC 4266MHZ 17-18-18-41-2T @1.45V)
MSI GTX 1070 SEA HAWK EK X SLI WITH ASUS HB RGB
(5)Samsung 840 Pro 128 GB In Raid 0
(2) WD 1TB Black Edition
Corsair 900 D

kshafe777
Level 7
thanks. is this limitation caused by z390? by the 9900k? just becuase x16 for both lanes isn't needed? curious. thanks!
"Better to try and Fail, then not try at all" ~ Michael Jordan
favorite YouTuber - KDSTech - https://www.youtube.com/channel/UCz0zF8nTziWiBx3v6CNR3yw

kshafe777 wrote:
thanks. is this limitation caused by z390? by the 9900k? just becuase x16 for both lanes isn't needed? curious. thanks!

Yes...to run sli 16x you would need to switch to another platform ie: x299
Asus ROG Maximus XI EXTREME
Intel i7 9900K OC'D @ 5.2 GHZ @ 1.345V (1.296V LOAD) LLC 6 PRIME 95 STABLE 8 HRS
XSPC RX360 Rad (6)Scythe Gentle Typhoon 1850 RPM Fans In Push/Pull @ 1500 RPMS
Swiftech Drive II / Swiftech MCP35X Pump
Enermax Platimax 1200 Watt Power Supply
32GB G.Skill F4-3866C18Q-32GTZR 3866 MHZ CL18 1.35V (OC 4266MHZ 17-18-18-41-2T @1.45V)
MSI GTX 1070 SEA HAWK EK X SLI WITH ASUS HB RGB
(5)Samsung 840 Pro 128 GB In Raid 0
(2) WD 1TB Black Edition
Corsair 900 D

FornaxLacerta
Level 7
Correct me if I'm wrong, but I don't think there any difference given that even a 2080 ti can't saturate 8 PCIE 3.0 lanes. I recall reading this when I was looking into getting my Formula XI and a pair of 2080 TI's:

https://www.gamersnexus.net/guides/3366-nvlink-benchmark-rtx-2080-ti-pcie-bandwidth-x16-vs-x8