Question Will 5700X bottleneck if it's installed on a PCI express 3.0. motherboard?

atotalnoob2

Reputable
Dec 29, 2018
14
0
4,510
0
Hi,
I currently have a MSI b450m which is PCI express 3.0. and I wanted to replace my 2600 with a new ryzen 7 and I was thinking whether to buy the 3700x or the 5700x. Will be bottlenecked the 5700x with that MoBo? Will I get better or the same results using the 3700x?
Thanks.
 
Last edited:
Hi,
I currently have a MSI b50m which is PCI express 3.0. and I wanted to replace my 2600 with a new ryzen 7 and I was thinking whether to buy the 3700x or the 5700x. Will be bottlenecked the 5700x with that MoBo? Will I get better or the same results using the 3700x?
Thanks.GPU with PCIe v 4.0
That must be b350 or b450 because b550 would have PCIe v4.0. Both 3700x and 5700x have v4.0 and that can't bottleneck GPU with PCIe v4.0.What GPU are you talking about, not all are 4.0 and even less would suffer with 3.0 interface ?
So if there0s any bottleneck it would be caused by motherboard.
 
Reactions: RodroX
This is probably a prime example of where using the term 'bottleneck' is confusing to the point of meaningless.

In general, PCIe gen 4 has yet to be been shown to provide any real benefit to gaming performance except in very specific instances (and even then minor). But there are doubtless specific gaming applications and/or GPU compute applications where maximized PCIe bandwidth would be helpful if not essential. But broadly speaking, no.

As an example, even with all the complaining and whining AMD's RX6500 GPU, which is limited to x4 PCIe lanes vs. the usual x16, has been shown to perform 'well enough' (considering it's other low-end specs) even on PCIe gen 3 motherboards. That said, nobody (let alone me) is suggesting it should be used on anything but a PCIe gen 4 CPU/motherboard so that it at least equals PCIe gen 3 at x8 performance. So...if you're planning on a cheap RX6500 GPU then yes, you should definitely consider getting a B550 (or X570) motherboard to go with the 5700X.
 
Reactions: CountMike
This is probably a prime example of where using the term 'bottleneck' is confusing to the point of meaningless.

In general, PCIe gen 4 has yet to be been shown to provide any real benefit to gaming performance except in very specific instances (and even then minor). But there are doubtless specific gaming applications and/or GPU compute applications where maximized PCIe bandwidth would be helpful if not essential. But broadly speaking, no.

As an example, even with all the complaining and whining AMD's RX6500 GPU, which is limited to x4 PCIe lanes vs. the usual x16, has been shown to perform 'well enough' (considering it's other low-end specs) even on PCIe gen 3 motherboards. That said, nobody (let alone me) is suggesting it should be used on anything but a PCIe gen 4 CPU/motherboard so that it at least equals PCIe gen 3 at x8 performance. So...if you're planning on a cheap RX6500 GPU then yes, you should definitely consider getting a B550 (or X570) motherboard to go with the 5700X.
Except when you apply the true meaning of bottleneck, The slowest part in the line that natters in that case.
 

DSzymborski

Titan
Moderator
I would definitely reiterate the need to find out the exact motherboard. Not so much for the PCIE issue, but for the fact that Ryzen 5000 CPU compatibility is not a guarantee. For example, the MSI b350m Gaming Pro does not offer Ryzen 5000 BIOS support.
 

atotalnoob2

Reputable
Dec 29, 2018
14
0
4,510
0
I would definitely reiterate the need to find out the exact motherboard. Not so much for the PCIE issue, but for the fact that Ryzen 5000 CPU compatibility is not a guarantee. For example, the MSI b350m Gaming Pro does not offer Ryzen 5000 BIOS support.
Yeah, sorry. It's the b450m. Right now have promised compatibility with the 5700x but afaik it haven't released the BIOS update. I'm just asking bc for any reason I ignore in my country the 5700x is currently cheaper than the 3700x and I was thinking in getting that cpu
 

ASK THE COMMUNITY

TRENDING THREADS