Graphics interface running way lower than expected.

[Fetalbrute]

I first posted on reddit asking about pcie 4.0, if it really made a difference because i have a 5600G and that cpu limits the pcie to 3.0 instead. The thing is that i have a Qick 6750XT and according to cpu-z it is running at speeds way lower than it should, which should be x16 and 8GT/s (because of pcie 3.0). I read that the CPU has 16 lanes assigned to GPU and 4 to NVME but if i install an NVME, the gpu ones drop to 8, the thing is, i have an nvme installed so i was hoping to see x8 but instead i see x4, i tried running some games to see if it changed for some reason but it didn't, is this a BIOS config issue? I will list my pc components below and attach screenshots of bot CPU-Z and GPU-Z in case anyone can help or give some advice. I don't think buying a new CPU is a viable option at the moment tho, i don't have the money but if i had, i think i would go for a 5800x3D, unless there is a better am4 option

 

• Motherboard: Asus Tuf B550M plus (wifi)
• CPU: Ryzen 5 5600G
• GPU: AMD Qick 6750XT
• Power Supply: Evga bronze 80+ 650W
• Ram: Kingston Fury 32 GB (2x16) running at 3600mhz
• Storage devices: 1 HDD, 2 SSD, 1 Nvme
• Cooling: 6 darkflash fans connected to its hub, arctic freezer 36 for the CPU

[Eigenvektor]

PCIe 3.0 vs 4.0 makes little to no difference for most GPUs.

 

The GPUs that are most affected are the ones with only 4 lanes (e.g. RX 6500 XT). 

 

That said, since you are currently limited to 4 lanes that would be something to look into. 

 

Check the motherboard's specs. Could be CPU related, but lanes might also be shared with storage

[PDifolco]

5 hours ago, Fetalbrute said:

I first posted on reddit asking about pcie 4.0, if it really made a difference because i have a 5600G and that cpu limits the pcie to 3.0 instead. The thing is that i have a Qick 6750XT and according to cpu-z it is running at speeds way lower than it should, which should be x16 and 8GT/s (because of pcie 3.0). I read that the CPU has 16 lanes assigned to GPU and 4 to NVME but if i install an NVME, the gpu ones drop to 8, the thing is, i have an nvme installed so i was hoping to see x8 but instead i see x4, i tried running some games to see if it changed for some reason but it didn't, is this a BIOS config issue? I will list my pc components below and attach screenshots of bot CPU-Z and GPU-Z in case anyone can help or give some advice. I don't think buying a new CPU is a viable option at the moment tho, i don't have the money but if i had, i think i would go for a 5800x3D, unless there is a better am4 option

 

• Motherboard: Asus Tuf B550M plus (wifi)
• CPU: Ryzen 5 5600G
• GPU: AMD Qick 6750XT
• Power Supply: Evga bronze 80+ 650W
• Ram: Kingston Fury 32 GB (2x16) running at 3600mhz
• Storage devices: 1 HDD, 2 SSD, 1 Nvme
• Cooling: 6 darkflash fans connected to its hub, arctic freezer 36 for the CPU

Where did you slot the GPU ? 

Your board has 2 "long" PCie x16 size slot, but only one, usually the top one, is x16 the other is x4 only

 

[Fetalbrute]

7 hours ago, PDifolco said:

Where did you slot the GPU ? 

Your board has 2 "long" PCie x16 size slot, but only one, usually the top one, is x16 the other is x4 only

 

@PDifolco top one, I checked before installing cause i knew that was a thing, i algo know that having an nvme reduces the lanes to half with this cpu, my pc turned into a hell to fix, with the Bluetooth problem this motherboard has, xmp issues because of amd and now this lmao

[Fetalbrute]

9 hours ago, Eigenvektor said:

PCIe 3.0 vs 4.0 makes little to no difference for most GPUs.

 

The GPUs that are most affected are the ones with only 4 lanes (e.g. RX 6500 XT). 

 

That said, since you are currently limited to 4 lanes that would be something to look into. 

 

Check the motherboard's specs. Could be CPU related, but lanes might also be shared with storage

@Eigenvektor I know having an nvme with this cpu reduces lanes from 16 to 8, the problem is that i only have 4 rn, i might've missed some info on the motherboard if it is shared with storage other than nvme so I'm gonna check again, i just ran out of option because BIOS config looked fine

[PDifolco]

13 minutes ago, Fetalbrute said:

@Eigenvektor I know having an nvme with this cpu reduces lanes from 16 to 8, the problem is that i only have 4 rn, i might've missed some info on the motherboard if it is shared with storage other than nvme so I'm gonna check again, i just ran out of option because BIOS config looked fine

Can't you put the NVMe in a slot using chipset lanes ? 

[Fetalbrute]

10 hours ago, Eigenvektor said:

PCIe 3.0 vs 4.0 makes little to no difference for most GPUs.

 

The GPUs that are most affected are the ones with only 4 lanes (e.g. RX 6500 XT). 

 

That said, since you are currently limited to 4 lanes that would be something to look into. 

 

Check the motherboard's specs. Could be CPU related, but lanes might also be shared with storage

I checked BIOS and realized that auto mode was setting my pcie to raid mode, making it run at x4, chose to use x8/x8 mode and worked fine, i remembered this motherboard/cpu apparently doesn't like auto mode for things

[Fetalbrute]

28 minutes ago, PDifolco said:

Can't you put the NVMe in a slot using chipset lanes ? 

@PDifolco Apparently the 2nd slot doesn't limit my gpu BUT makes the nvme run at i think pcie 2.0 or 3.0 x2bso it would be the same just the other way around, GPU limiting NVMe, would 2 lanes make ot way slower? or is it worth the trade of, i'm still gettin good performance in most tbh, even a little bit better now that the gpu is running at x8

[PDifolco]

7 minutes ago, Fetalbrute said:

@PDifolco Apparently the 2nd slot doesn't limit my gpu BUT makes the nvme run at i think pcie 2.0 or 3.0 x2bso it would be the same just the other way around, GPU limiting NVMe, would 2 lanes make ot way slower? or is it worth the trade of, i'm still gettin good performance in most tbh, even a little bit better now that the gpu is running at x8

Check what bandwidth you'll get, but even Pcie2 x2 is 1GB/s, which won't be an issue at all on a SSD except for huge file transfers (it's still near double of SATA..)

OTOH PCie3 x4 on a GPU gives 4 GB/sec, and I suspect this can kneecap your GPU pretty often 

[Fetalbrute]

I took your advice and guess what, i got almost the same speeds, somehow higher speeds in RND4K with my GPU running at pcie 3.0x16. My pc kinda died at first but after a bios reset it worked perfectly, had to apply all settings again tho but it was probably worth it, gotta check performance in some games now, sons of the forest runs at 45fps on multiplayer but double when singleplayer, idk whats up with that but hopefully this helps. Time to try some dark ages now! thanks for the help i really appreciate it