[SOLVED] x16 2.0/x8 3.0 vs x16 3.0 for 1080

[Lena__]

Hello!
x16 2.0/x8 3.0 vs x16 3.0 for 1080
Do i unterstand correctly that videocards work with half ability if their slot is half speed?
or would i not notice difference with mine?
manupulations i might want to do to my pc will do smthing to main slot
liker adding second gpu or moving m.2
pc fans on performa are from silent loop 240 (broke it)
PCPartPicker Part List

Asus CROSSHAIR VI HERO ATX AM4 Motherboard
AMD Ryzen 7 1700 3 GHz 8-Core Processor
Zalman CNPS10X Performa CPU Cooler
G.Skill Ripjaws V Series 16 GB (2 x 8 GB) DDR4-3200 CL15 Memory x2
Samsung 960 EVO 250 GB M.2-2280 NVME Solid State Drive ($109.99 @ Amazon)
Samsung 870 Evo 1 TB 2.5" Solid State Drive ($119.99 @ Amazon)
EVGA GeForce GTX 1080 8 GB SC2 Gaming iCX Video Card
Asus PCE-AC55BT B1 PCIe x1 802.11a/b/g/n/ac Wi-Fi Adapter
be quiet! Pure Wings 2 65.51 CFM 120 mm Fan x2
EVGA G3 750 W 80+ Gold Certified Fully Modular ATX Power Supply
monitor Acer XF290C(bmjdprz) 29" 2560x1080

 

[rgd1101]

NVIDIA GeForce GTX 1080 PCI-Express Scaling

In this article, we investigate how performance of NVIDIA's GeForce GTX 1080 is affected when running on constrained PCI-Express bus widths such as x8 or x4. We also test all PCIe speed settings, 1.1, 2.0, and 3.0. One additional test checks on how much performance is lost when using the...

www.techpowerup.com

 

[Rogue Leader]

Couple things to know. First off there are 2 M.2 slots but only one of them is PCIe, and has dedicated lanes unrelated to the GPU slots. The other one is SATA. Secondly adding a second GPU is a waste of time/money, most new software does not support SLI. Its a dying technology.

Next thing to know that it does not half the ability by halving the lanes/version. It does somewhat limit it but the difference is quite minimal. That said in most cases SLI is about 1.5x not 2x performance. Again though not worth it.

 

[Lena__]

Couple things to know. First off there are 2 M.2 slots but only one of them is PCIe, and has dedicated lanes unrelated to the GPU slots. The other one is SATA. Secondly adding a second GPU is a waste of time/money, most new software does not support SLI. Its a dying technology.

Next thing to know that it does not half the ability by halving the lanes/version. It does somewhat limit it but the difference is quite minimal. That said in most cases SLI is about 1.5x not 2x performance. Again though not worth it.

I see about two gpus thanks.
no. mine have one m.2. slot. I meant buy thing to put m.2 drive into pcie slot. i heard its more cold

NVIDIA GeForce GTX 1080 PCI-Express Scaling

In this article, we investigate how performance of NVIDIA's GeForce GTX 1080 is affected when running on constrained PCI-Express bus widths such as x8 or x4. We also test all PCIe speed settings, 1.1, 2.0, and 3.0. One additional test checks on how much performance is lost when using the...

www.techpowerup.com

thanks!
there is even a text about it in local https://overclockers.ru/lab/show/90...-v-interfejsah-pci-express-x16-x8-x4-maj-2018