One thing to consider is the number of pcie lanes on the gpu. x16 cards still can't saturate much more than 3.0x16, but if you have a 4.0x8 card (effectively 3.0x16 in bandwidth) and have to run a pcie 3.0 speeds the card theoretically is running at 1/2 the maximum theoretical bandwidth.
@Zeptre_ I'm not sure I understand your comment. There are several documented examples where cards are x4 or x8 physically, and going down to 3.0 when the card was designed as a 4.0 card significantly impacts performance. You are right, I think if I understand your comment correctly, if the card is x16 it doesn't matter if it is used as pcie 3.0 or pcie 4.0.
@@7MBoosted Correct. If it utilises all 16 available lanes it'll be no different PCIE3 v's PCIE4, as even the most powerful GPU's cannot yet saturate 3x16 lanes to the point it becomes a system bottleneck. Let's see if the new 5090 comes close to that tipping point...
@Zeptre_ I'm pretty sure it has been demonstrated that cards like the RX 6400 and RX 6500 lose fps when run in pcie 3.0, sometimes their fps is cut in half.
Hi! I mm guessing you were running in PCIE 4.0 16x and 3.0 16x? With alot of older motherboards, using two Nvme m2 drives will drop the lanes down to 8x. This is going to hinder performance on newer cards!
This is close to my current setup, I have the TUF Gaming b450, a 5700x3d paired with the 4070ti super and 32GB 3200 MT/s Tforce Delta and I mainly play VR games. Performance has been beyond satisfactory.
*TOMB RAIDER... why 4.0 might be "slower"...* I know this was an issue on the 2013 game but what happened was the TEXTURES on the slower system loaded in slower. Some of them weren't actually processed and you ended up with a higher FPS. That was SSD vs HDD but it might be a similar issue here. Of course it's 0.1% LOWS so it would probably not be worth investigating a 16% difference. Just keep in mind that STORAGE-> VRAM can affect FPS scores in the opposite direction you may think.
5:52 Highly doubt that gen4 is the cause here. There's most likely a problem with your test setup. Could be caused firmware. Why did you use different boards?
A 256 bit gpu will run almost the same on pci 3.0 vs 4.0, just don’t buy a 128bit gpu if you have pci 3.0, that will run slower, because of the limited bandwidth. I don’t remember who, but there are some videos on TH-cam that showed a significant decrease in performance. The 4070 would work ok since it’s a 256 bit gpu.
Can u please show the options setting u used to have it work im fighting w pci e 5.0 in my system and the moment i put it on 16x the system refuses to turn on.
Does your motherboard and graphic card both support PCI-e 5.0? The same is true for the SSD. If they have different versions of PCI-e, you have to set them in the BIOS to auto or set them the same values manually.
This video is a bit pointless, as you are using a GPU that is PCIE4 x16. You need to drop down a tier and use the RTX 4060ti, which is a PCIE4 x8 card! The only time it'll make a difference for GPU's is when they are configured as 8 lane cards rather than 16. PCIE 4x8 running on PCIE 3 will have half the bandwidth, as it will still only use 8 of the 16 available lanes, and at half the bandwidth of PCIE4. This is a design constraint that only works because even the most modern high end cards like the RTX 4090 still do not fully saturate 3x16 lanes, so they deliberately gimp PCIE 4 cards to 8 lanes at the lower end, as that is equal to 3x16's bandwidth, BUT ONLY ON PCIE4 BOARDS. On PCIE3 it'll slash available bandwith and give about a 30% performance hit. As I understand it, only the high end new cards are PCIE 4x16 natively. And that is where it'll hurt gaming performance -if the new cards are configured as 8 lane models and you have a PCIE 3 board. Many new cards are 8 lane, so it's definitely a thing...
Use B450 mobo sure much not diff coz motherboard cap at pcie 3.0 ,only able GPU to run Max at pcie 3.0 speed compare B550 if B550 motherboard run at pcie 4.0 is another different performance story already unlocked GPU 4.0 performance Increase 15% in fod does matter alot
the only difference in PCIE 3.0 to 4.0 is with NVME drives, you'll be lane bottlenecked if say you put a NVME PCIE 4.0 in a 3.0 slot and tbh it's not really that bad as 3.0 is already plenty fast, but if say you have one of those drives that can do 7200mbps speeds I would be looking to swap or not purchase one of those so something like like a 5000mpbs won't be that bad if its on 3.0 instead. The other thing is with those very low end GPUs like the rx 6400 honestly that card shouldn't even exist at all. But if it's not on PCIE 4.0 its gimped pretty bad, so thanks AMD for that. But the vast majority of gpus outside the special case low end ones will maybe see 1-3 fps difference in gaming which isn't anything to big. This might change in the future, but for now all this tells us is that even if say you're on PCIE 4.0 if your GPU got knocked down to x8 instead of the usual x16 (say you wanted more NVMEs) it will still be perfectly fine. I believe PCIE 3.0 at x8 should be fine as well, but it might have a small hit if there is anything, but nothing major.
One thing to consider is the number of pcie lanes on the gpu. x16 cards still can't saturate much more than 3.0x16, but if you have a 4.0x8 card (effectively 3.0x16 in bandwidth) and have to run a pcie 3.0 speeds the card theoretically is running at 1/2 the maximum theoretical bandwidth.
But performace is baso unaffected going from x16 to x8, jsit wouldn't do that on 3.0. 4.0 and 5.0 only I'd half to x8 if need extra lanes
@Zeptre_ I'm not sure I understand your comment. There are several documented examples where cards are x4 or x8 physically, and going down to 3.0 when the card was designed as a 4.0 card significantly impacts performance. You are right, I think if I understand your comment correctly, if the card is x16 it doesn't matter if it is used as pcie 3.0 or pcie 4.0.
@@7MBoosted Correct. If it utilises all 16 available lanes it'll be no different PCIE3 v's PCIE4, as even the most powerful GPU's cannot yet saturate 3x16 lanes to the point it becomes a system bottleneck. Let's see if the new 5090 comes close to that tipping point...
@@7MBoosted I'm on about fps in games. Work load rendering prolly a different story
@Zeptre_ I'm pretty sure it has been demonstrated that cards like the RX 6400 and RX 6500 lose fps when run in pcie 3.0, sometimes their fps is cut in half.
Welcome to fatherhood! Glad to see some new stuff!
@@GweenImp Thanks, I appreciate it!
@@GweenImp Thanks, I appreciate it!
Hi! I mm guessing you were running in PCIE 4.0 16x and 3.0 16x? With alot of older motherboards, using two Nvme m2 drives will drop the lanes down to 8x. This is going to hinder performance on newer cards!
That’s already web proven false. Within the margin of error even with pcie 8x cards.
This is close to my current setup, I have the TUF Gaming b450, a 5700x3d paired with the 4070ti super and 32GB 3200 MT/s Tforce Delta and I mainly play VR games. Performance has been beyond satisfactory.
i was looking to upgrade it helped me thx
*TOMB RAIDER... why 4.0 might be "slower"...*
I know this was an issue on the 2013 game but what happened was the TEXTURES on the slower system loaded in slower. Some of them weren't actually processed and you ended up with a higher FPS. That was SSD vs HDD but it might be a similar issue here. Of course it's 0.1% LOWS so it would probably not be worth investigating a 16% difference. Just keep in mind that STORAGE-> VRAM can affect FPS scores in the opposite direction you may think.
Congratulations
Thank you!
5:52 Highly doubt that gen4 is the cause here. There's most likely a problem with your test setup. Could be caused firmware. Why did you use different boards?
Why did you use different boards? You know that PCIe revision can be changed in the BIOS, right?
A 256 bit gpu will run almost the same on pci 3.0 vs 4.0, just don’t buy a 128bit gpu if you have pci 3.0, that will run slower, because of the limited bandwidth. I don’t remember who, but there are some videos on TH-cam that showed a significant decrease in performance. The 4070 would work ok since it’s a 256 bit gpu.
thx
This video is BASED!
Is what?
Based, accurate, to the point@@andrewmoura4436
Wise man told me ain't broke just leave it alone and don't upgrade it at all.
Can u please show the options setting u used to have it work im fighting w pci e 5.0 in my system and the moment i put it on 16x the system refuses to turn on.
Does your motherboard and graphic card both support PCI-e 5.0? The same is true for the SSD. If they have different versions of PCI-e, you have to set them in the BIOS to auto or set them the same values manually.
Try this again but with the rx 6500xt
This is already old news when latest motherboards are gen 5.0
This video is a bit pointless, as you are using a GPU that is PCIE4 x16. You need to drop down a tier and use the RTX 4060ti, which is a PCIE4 x8 card!
The only time it'll make a difference for GPU's is when they are configured as 8 lane cards rather than 16.
PCIE 4x8 running on PCIE 3 will have half the bandwidth, as it will still only use 8 of the 16 available lanes, and at half the bandwidth of PCIE4.
This is a design constraint that only works because even the most modern high end cards like the RTX 4090 still do not fully saturate 3x16 lanes, so they deliberately gimp PCIE 4 cards to 8 lanes at the lower end, as that is equal to 3x16's bandwidth, BUT ONLY ON PCIE4 BOARDS.
On PCIE3 it'll slash available bandwith and give about a 30% performance hit.
As I understand it, only the high end new cards are PCIE 4x16 natively.
And that is where it'll hurt gaming performance -if the new cards are configured as 8 lane models and you have a PCIE 3 board.
Many new cards are 8 lane, so it's definitely a thing...
yeah I want to point that out but you did already, thanks then. I hope he reads your comment
Use B450 mobo sure much not diff coz motherboard cap at pcie 3.0 ,only able GPU to run Max at pcie 3.0 speed compare B550
if B550 motherboard run at pcie 4.0 is another different performance story already unlocked GPU 4.0 performance
Increase 15% in fod does matter alot
Try Counter Strike 2 4:3 1280x960 PCIe 3.0 vs 4.0
the only difference in PCIE 3.0 to 4.0 is with NVME drives, you'll be lane bottlenecked if say you put a NVME PCIE 4.0 in a 3.0 slot
and tbh it's not really that bad as 3.0 is already plenty fast, but if say you have one of those drives that can do 7200mbps speeds I would be looking to swap or not purchase one of those
so something like like a 5000mpbs won't be that bad if its on 3.0 instead.
The other thing is with those very low end GPUs like the rx 6400 honestly that card shouldn't even exist at all. But if it's not on PCIE 4.0 its gimped pretty bad, so thanks AMD for that.
But the vast majority of gpus outside the special case low end ones will maybe see 1-3 fps difference in gaming which isn't anything to big. This might change in the future, but for now all this tells us is that even if say you're on PCIE 4.0 if your GPU got knocked down to x8 instead of the usual x16 (say you wanted more NVMEs) it will still be perfectly fine.
I believe PCIE 3.0 at x8 should be fine as well, but it might have a small hit if there is anything, but nothing major.
Pcie4 is just a gimmick for gaming
So many disgusting things in the first 100 seconds of this video
You do miss the point unless you compare x8, even x4 pcie cards. Guess what, you didn't ...
Congratulations