yeah.. although ive already ordered a shorter and higher quality riser from china last week that is bound to arrive soon anyways. as my current one is slightly too long.

Such a coincidence...

tried to run the GPU directly without the riser and it's still on x8, even on nvidia control panel it's showing x8.

possible for it to be a faulty card or mobo?

proc is ryzen 3600 on a MSI b450I itx mobo. running one m.2 and one sata... looked up online and the m.2 shouldnt affect the bus.

Cleared CMOS already?
Did you accidentally enable this x8+x8 in your BIOS setting?

cleared and even flashed to the latest bios...removing my 2.5" sata didnt fix it either.

After further research it probably looks like a B450 lacking of PCI-e Lanes if using the m.2 slot..... cuz apparently there's also a wifi and bluetooth adapter pre-installed on another m.2 (for my motherboard)

I have no spare HDD to test whether it will go to 16X if I remove the m.2 ssd.... But it seems to be very likely the case after digging around online... however I will validate this when im free.

I have not noticed this maybe because 2080 couldnt saturate the whole 16X3.0 bandwidth so didnt notice any "loss" in performance but the 3080 made it noticeable in benchmark, prompting me to check.

This post has been edited by Bonchi: Dec 3 2020, 07:43 PM

whats your full config...

ryzen 3600
2x16gb
msi b450i gp wifi ac
kingston m.2 sata 250gb
crucial 2.5” sata 1tb
RTX3080
SF750

im currently trying out my rig without the m.2

so far looks pretty decent... and direct

i dont think its the nvme unless the bios is bugged for 3600
2600 had only 20.. 4 for chipset and 16 to gpu
and 3600 has 24.. 4 for chipset 16 for gpu and 4 for nvme etc...

nrw clarified and ive confirmed by running on an open bench and tested by removing my ssd. turns out they connected the wifi to an m.2.... then what the ssd is using is the 2nd m.2 slot so causing the gpu to become 8x

AMD experience~

to make sure check with the wifi card disabled/removed please.

just now as edmund_yung kindly pointed out the b450i strix is running the wifi pcie 2230 running over it's chipset.

This post has been edited by nrw: Dec 4 2020, 11:47 AM

yeah that will be my next step.. out for lunch at the moment lol.. however with the m.2 ssd removed it already gone back to x16 so kinda 50% proved the hypothesis already.

Strix shares the chipset by disabling sata ports. but this MSI doesnt... so it gives a hint already.

ye, quite an isolated b450 itx issue haha.

if confirmed just get the b550i aorus or b550i strix.
strix if u like memory oc or need the usb-c.
giga otherwise since it's quite a bit cheaper.
got both with me, both are good boards.

i checked the manual.

this a bug in support for your 3600x

seems like the pcie lane.. the extra 4x is not used. the whole design is based on 2600x

for some odd reason to accommodate compatibility

nrw this is y i always support intel narrative of new cpu, new chipset. mine more for oc perspective.

Welp, just an update, unplugged the wifi and it's still maintained that the 4 lanes is still reserved... perhaps its the way the bios is written for this board...because the second m.2 is not listed in the devices but instead hardcoded under integrated peripherals instead. (i actually tried plugging the SSD into that wifi's m.2 but it's not detected lmao.)

Owell... when I did some benchmark with pcie 16X3.0, my average core clock increased significantly. It is indeed tempting to upgrade to a better board knowing the results but the hassle of migrating all my files and stuff... haih. lain kali lah. will just be contempt with the result because already know what is wrong and have concluded that the RTX3080 is indeed performing on spec and not faulty.

Anyways thanks owikh84 for pointing out on the pcie lanes. I wouldnt have noticed it because will just assumed it will run 16X and also nrw for clarifying on this b450 itx's behavior.

This is my first time not using a gaygaybird board in 12 years and my first MSI board.... Guess im going back to being loyal to gaygaybird.

This post has been edited by Bonchi: Dec 4 2020, 10:13 PM

the board was designed with 2600x in mind which had 20 lanes..

its super weird that it did that for your 3600x...
see the dmi connection on the manual...

i would report to msi...

It comes with a superb VRM setup but regardless a entry board is an entry board.

I will just sell this board and upgrade when i have the mood in the coming weeks. Tomorrow will finish up with my deshrouding mod. Test fitting was successful.

It also made the card alot smaller and the fit is much better.

This post has been edited by Bonchi: Dec 4 2020, 11:20 PM

just gotten the igame colorful W OC Ultra 3070,should i follow this guide at reddit for pure undervolt? It was for 3070 FE thought.
https://www.reddit.com/r/nvidia/comments/jn...or_rtx_3070_fe/

so far under 1800 mhz have good result but not sure which voltage to start with.Drag 850mV to 1800mhz crash the ffxiv benchmark right away

no
just follow the one listed here.. and 3070.. u want to undervolted..??y dude

just try this with msi ab latest beta
at 1.1v put it at 2130-2190...

https://forum.lowyat.net/topic/4966181

This post has been edited by cstkl1: Dec 5 2020, 12:10 PM

To try to lower temperature on my gpu..
other wise,thanks for the guide. i will try that value later

i would aim noise vs temp

keep it under 80 preferably under 70 with good fan profile and oc from there

try heaven 30min to 1 hour

general behaviour of ampere clocking is.. say u se 2100 for example.. it will go do 2085 then go back 2100 and flux to 2115.. ..
so u got to be stable at 2115 also...

the rest u can figure out youself pretty quick on scaling...

i am at 2100-2130@1.062v atm...

vram oc on 3070 i cant guide ya but that nrw can tell ya based on grrd6 max production speed...

rikimatsu 3070(3060ti) should have lower frequencies for voltage points, so you gotta figure that yourself as I didn't have one to try yet.

Once you found a stable curve just leave a reply so others can take this as starting point.

GDDR6 it should be using K4Z80325BC-HC14 which is specified for 14Gbps but I guess if your cooling allows for it and direct contact to your coolers plate is given you can always try to reach more... probably you can get (close) to 16Gbps... (+1000) But always make sure to check if you lose performance despite raising memory clock, this is where error correction kicks in and you lose performance.