Question [gigabyte Z370P-D3] PCIe Line available for the GC when adding a NVMe M2 SSD ?

Sep 15, 2023
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Can i have a Graphic Card running at normal X16 if i add an M2 NVMe WD_BLACK SN770 (PCIe x4) with my gigabyte Z370P-D3 ?
Are those Two separate or the ssd card take pci lines from the GC ?
Will i have my GC running at X8 ?
 

kanewolf

Titan
Moderator
Can i have a Graphic Card running at normal X16 if i add an M2 NVMe WD_BLACK SN770 (PCIe x4) with my gigabyte Z370P-D3 ?
Are those Two separate or the ssd card take pci lines from the GC ?
Will i have my GC running at X8 ?
The specs -- https://www.gigabyte.com/Motherboard/Z370P-D3-rev-10/sp#sp show that slots PCIEX4_1/PCIEX4_2 are independent of slot PCIEX16
Those slots are tied to the chipset and the x16 slot is tied to the CPU.
 
Sep 15, 2023
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thanks for the answer,
so the fact that with the prog HWINFO64 i see my GC working at :
Bus de carte graphique: PCIe v4.0 x8 (16.0 GT/s) @ x8 (2.5 GT/s),
is not normal Right ?
it should be fixable in the bios right ?
 
Sep 15, 2023
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Depends on the graphics card. Some AMD cards are x8 by design.
it's the gigabyte RTX 4060 Ti eagle 8G. It says on the sticker :
"PCI-E 4.0 x8/8 GB GDDR6/128bit"
so i guess X8 is normal...must be a card for an SLI config i guess ? i Should have better...Didn't know a single card could be x8 by default ?...
 

kanewolf

Titan
Moderator
it's the gigabyte RTX 4060 Ti eagle 8G. It says on the sticker :
"PCI-E 4.0 x8/8 GB GDDR6/128bit"
so i guess X8 is normal...must be a card for an SLI config i guess ? i Should have better...Didn't know a single card could be x8 by default ?...
PCIe bus width has very little performance impact at Gen 4 speed, so the manufacturer saves money.
Even with Gen 3 speed, it is a couple percent.