Question Best card to run in a x16 slot in x4 mode? No dual 8x on this mobo

mopardude87

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Oct 22, 2018
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I got a x570 Aorus Elite coming today and from what i can gather its gonna run at the full pci-e 4.0 speeds on the primary slot while the bottom x16 slot is running at 4x from the chipset . Maybe the top drops down to 8x with dual i am not exactly sure yet. Would it be possible to run a second nvidia card and if so what would be the best pairing? I thought about a 1050ti as it would work with my 650w psu and the 1080ti/3900x stock combo. I am also going to be running a MP600 nvme and a AE-5 soundblaster in one of the x1 slots. I will prob be replacing the soundcard with usb headphones before i even get the 1050ti installed. Big maybe on the soundcard dump i do love the card but it may complicate things?

I will be replacing the motherboard later as i wanna go sli 3080ti but for now would a 1050ti cause havoc sitting in that bottom slot with the 1080ti in the primary with the AE-5 in a x1 slot as well? I may opt for the best gpu too depending on the 3080ti series stuff and its release. Just kinda depends gonna be doing most of this stuff in like 2 weeks after the May 14th nvidia announcement thing.
 
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Bouowmx

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Nov 13, 2016
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PCIE x4 isn't a bottleneck. You can put any graphics card.

NVIDIA GeForce RTX 2080 Ti PCIE x4 vs x16: 91% at 1920x1080.
 
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I was going to say the above, overall you only lose a couple percent of peak performance in a 4x slot
Also not too poop on the idea, dual cards don’t provide that much or any performance boost. Drivers typically don’t support it, games typically don’t support it, Windows 10 doesn’t support it.
 

VirtualLarry

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I'm running an RX 5700 XFX reference blower card in my primary PCI-E slot at 3.0 x8, and a MSI GTX 1660 ti Gaming X in my secondary PCI-E slot at 3.0 x4, in an Asus B450-F ROG STRIX Gaming ATX mobo, with a Ryzen R5 3600 CPU.
 
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mopardude87

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Oct 22, 2018
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I was going to say the above, overall you only lose a couple percent of peak performance in a 4x slot
Also not too poop on the idea, dual cards don’t provide that much or any performance boost. Drivers typically don’t support it, games typically don’t support it, Windows 10 doesn’t support it.
Running a folding rig with a dual purpose of also gaming at the same time, its a build i am working on this year called "KRONOS". One gpu will game and use like 50% of the 3900x at most while the rest of the cpu will run Boinc cpu folding alongside the other gpu with Folding@Home. Only one title i play that essentially supports sli where i need the performance of sli and its GTA V but for 1080p a single 3080ti will be serious overkill and prob finally max it with ease and prob even warrant a 1440p monitor before end of year so its NOT that overkill. I assume next gen games may tank the 1080ti but will see with what games i plan to get only this year.

Gonna wait till May 14th and see what Nvidia has to say before i make any final decisions on gpu choices. In theory if i run my 1080ti in the 4x slot i shouldn't lose any performance even if the main slot has a 3080ti with a NVME installed? I never took on a config like this before but i always hear horror stories about allocation of lanes. I could dump the nvme/soundblaster in a second if it buys more performance. If it doesn't hurt i rather keep.

Oddly not getting any notices about responses to this thread, thanks guys for the current ones and the help so far!
 

Bouowmx

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Nov 13, 2016
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Only one title i play that essentially supports sli
NVIDIA SLI requires at minimum PCIE x8 to each GPU. Otherwise, motherboards with x16 CPU / x4 chipset get AMD CrossFire only.
Gonna wait till May 14th and see what Nvidia has to say
Upcoming NVIDIA GTC won't have GeForce. Though, whatever Tesla/Quadro announced there can clue into future GeForce offerings.
 

mopardude87

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Oct 22, 2018
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NVIDIA SLI requires at minimum PCIE x8 to each GPU. Otherwise, motherboards with x16 CPU / x4 chipset get AMD CrossFire only.

Upcoming NVIDIA GTC won't have GeForce. Though, whatever Tesla/Quadro announced there can clue into future GeForce offerings.
I do know about the sli deal and i got some boards in mind but i am waiting to see if the 3080ti is worth doubling down on or if its coming out anytime before summer which i kinda got doubts on. I heard October then suddenly we got something being announced on the 14th.

I am prob gonna be grabbing a 1650 or maybe the super to pair up with the 1080ti if no announcements are made about new gpus on the 14th . Not to sure on the wattage of the 1650 super, if a stock 3900x/1080ti/1650 super config would be problematic on a Seasonic Focus 650w Gold. If so i would opt for a 1050ti/1650 but would prefer at least a 1650 if possible.

I could past the 1050ti to a friend using my spare rig. Its a rig i got out on loan so while he rents my buddies room, he has access to a i5 4670/8gb/4gb gtx960. If i opt for the 1650 or super variant then my friend on her 1050ti gets a mild to moderate upgrade and then the other friend gets her old1050ti which is a mild but VERY efficient upgrade. My htpc then goes from a 2gb 660 to a 4b gtx960. In the end it all will work out fine. :)
 

Stuka87

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Dec 10, 2010
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Even on PCI-E, 4x was only an issue in very specific cases.
I do know about the sli deal and i got some boards in mind but i am waiting to see if the 3080ti is worth doubling down on or if its coming out anytime before summer which i kinda got doubts on. I heard October then suddenly we got something being announced on the 14th.

I am prob gonna be grabbing a 1650 or maybe the super to pair up with the 1080ti if no announcements are made about new gpus on the 14th . Not to sure on the wattage of the 1650 super, if a stock 3900x/1080ti/1650 super config would be problematic on a Seasonic Focus 650w Gold. If so i would opt for a 1050ti/1650 but would prefer at least a 1650 if possible.

I could past the 1050ti to a friend using my spare rig. Its a rig i got out on loan so while he rents my buddies room, he has access to a i5 4670/8gb/4gb gtx960. If i opt for the 1650 or super variant then my friend on her 1050ti gets a mild to moderate upgrade and then the other friend gets her old1050ti which is a mild but VERY efficient upgrade. My htpc then goes from a 2gb 660 to a 4b gtx960. In the end it all will work out fine. :)
The 14th is for Tesla/Quadro cards. There have not been any credible rumors for a consumer card. Ampere is looking like Volta did, which was an HPC only architecture. They may surprise us, but don't hold your breath.
 

mopardude87

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Oct 22, 2018
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Yeah i have decided to try it out with a 2060. Worst case it all fails then i got a new mobo in the works, one i plan to get anyways but hoping i could cruise by using that 16x slot for now.
 
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mopardude87

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Oct 22, 2018
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After doing some more research and collecting numbers, the 1650 super with my goals is the best gpu of choice. Now if it will work with a 3900x set to a TDDP of 105w on a x570 and a stock 1080ti with a 650w Seasonic Focus i am not sure. I feel this could make the cut? I wanna pick up the psu when i get the other cards end of year.
 

SPBHM

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Sep 12, 2012
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if you are going to run with lower PCIE bandwidth, having more vram might be more important than usual, as the 5500XT reviews showed (4GB suffering in some games with PCIE 3.0 x8 while 8GB didn't)

but you can probably compensate some of that with lowering settings.
 

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