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is there anyway to verify my motherboard actually has a gen5 gpu slot without a gen5 card?

Space Lynx

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gpu-z and cpu-z just tell me its PCI-E 4.0, and I know that is normal, but I am just trying to make sure it is a gen5 slot.

mobo official page says it has both gen5 pci-e slot and gen5 storage slot, but I was just wondering is there anyway to actually verify this on my end?

1716000315361.png


1716000341260.png


edit: just to be clear I am only interested in gen5 gpu slot is it gen4 or gen5, nvme drive doesn't interest me as much
 
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tabascosauz

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Space Lynx said:
gpu-z and cpu-z just tell me its PCI-E 4.0, and I know that is normal, but I am just trying to make sure it is a gen5 slot.

mobo official page says it has both gen5 pci-e slot and gen5 storage slot, but I was just wondering is there anyway to actually verify this on my end?

View attachment 347810

View attachment 347811
Click to expand...

Without a device on either end that is capable of PCIe 5.0, probably not.

Maybe a BIOS switch that toggles between Gen3/4/5, but even then I'm not sure if the BIOS maker might just hide the inapplicable options.
 
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tabascosauz said:
Without a device on either end that is capable of PCIe 5.0, probably not.

Maybe a BIOS switch that toggles between Gen3/4/5, but even then I'm not sure if the BIOS maker might just hide the inapplicable options.
Click to expand...

I'm sure it is gen5 if the box and website says it is, I was only curious, thanks!
 
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B650E and X670E have it. The none-E does not
 
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ir_cow said:
B650E and X670E have it. The none-E does not
Click to expand...

www.asrock.com

ASRock B650 Steel Legend WiFi

Supports AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Series Processors; 14+2+1 Power Phase, 80A Dr.MOS for Vcore; 4 x DDR5 DIMMs, Supports Dual Channel, up to 7200+ (OC); 1 PCIe 5.0 x16, 1 PCIe 3.0 x16, 1 PCIe 4.0 x1; Graphics Output Options: 1 HDMI, 1 DisplayPort; Realtek ALC4082 7.1 CH HD Audio...
www.asrock.com www.asrock.com

non-e does have it. that designation no longer means anything to my knowledge.

1716011438000.png
 
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ir_cow said:
Not according to AMD. ASRock must have a typo or AMD didn't get the memo that there guidelines no longer matter.

Click to expand...

I just took these pictures off the back of the box... lol

and I know this isn't the B650e steel legend, because @GerKNG has that one and the main difference is the 16 power stages vs my 14. @AsRock do you work at asrock? cause im genuinely curious now :D

1716016281287.png


1716016301678.png


and I found this in CPU-Z

1716016516764.png


Mainboard Bus Specs PCI-E 5.0, but I don't know what it means by Bus Specs... lol (what does mainboard bus spec mean??? someone clarify this for me? referring to nvme or gpu slot?)

@W1zzard I think AsRock made a oopsie oopsie :roll:AMD going to be like, what you doing selling a B650e board as B650!!! tsk tsk tsk! I mean I love the board and am going to keep it, but yeah... this is indeed strange, cause its clearly not a mistake by AsRock, as mentioned before with Gerkng. but it is also violating AMD's layout for B650e vs B650 requirements... fascinating!
 
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You can check UEFI firmware for PCIE slot settings
1716016494845.png


Even on auto GPU-Z should see the pcie gen when GPU is loaded. I dont have a gen 5 so it shows what it is for me.

1716016573228.png


Cheers!
 
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taka said:
You can check UEFI firmware for PCIE slot settings
View attachment 347836

Even on auto GPU-Z should see the pcie gen when GPU is loaded. I dont have a gen 5 so it shows what it is for me.

View attachment 347838

Cheers!
Click to expand...

so the box, website, product page on Amazon I bought it from (shipped by Amazon, sold by AsRock official Amazon store) is all lying?

@W1zzard can you confirm gpu-z should show me bus interface should be 5.0 if that is indeed the slot I have? that is the main reason I bought this board, so I could upgrade to rtx 6080 or 6090 in a few years and have an upgrade path... this is lame...


I am going into BIOS now to try to find if my BIOS shows this anywhere, thank you @taka

product page where I bought it if anyone is interested: https://www.amazon.com/ASRock-Legend-RyzenTM-Processors-Blazing/dp/B0CXPXBF2M/
 
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GPU-Z never shows the maximum theoretical speed of the slot itself. It's limited by what your GPU is capable of.

If ASRock says it's a 5.0 x16 slot, I'm inclined to believe them. I don't think AMD has ever set it in stone that B650 can't have it.

It's an odd design choice, because B650 and B650E Steel Legend are not simple PCB sharing boards, so it was not a low effort copy paste on ASRock's part.
 
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Space Lynx said:
so the box, website, product page on Amazon I bought it from (shipped by Amazon, sold by AsRock official Amazon store) is all lying?

@W1zzard can you confirm gpu-z should show me bus interface should be 5.0 if that is indeed the slot I have? that is the main reason I bought this board, so I could upgrade to rtx 6080 or 6090 in a few years and have an upgrade path... this is lame...


I am going into BIOS now to try to find if my BIOS shows this anywhere, thank you @taka

product page where I bought it if anyone is interested: https://www.amazon.com/ASRock-Legend-RyzenTM-Processors-Blazing/dp/B0CXPXBF2M/
Click to expand...

The AMD page says Optional Support for PCIe 5 NVMe. https://www.amd.com/en/products/processors/chipsets/am5.html

1716017951137.png
 
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Last edited:
Space Lynx

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Carillon said:
You can try one of those passive m.2 adapter expansion cards with a gen 5 ssd
Click to expand...

hmm interesting idea... so in order for gen5 nvme to reach full speeds it has to be in a gen 5 gpu slot (if its using an adapter)... good idea, but I have no adapter and no gen5 drive to test this with and that's out of my budget...

would this even work though? does a gen4 gpu slot bandwidth limit a gen5 nvme drive? agh my head hurts....

edit: just to be clear I am only interested in gen5 gpu slot is it gen4 or gen5, nvme drive doesn't interest me as much
 
Last edited:
C

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I remember there were raid cardsthat could take advantage of the 16 lanes, for example to take a single gen4x4 ssd and use gen2x16 slot, I'm sure there are gen5 raid cards by now.
But a passive adapter just split the lanes, so a gen5x4 ssd will only use 4 lanes of whatever pcie gen it is connected to
 
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tabascosauz said:
GPU-Z never shows the maximum theoretical speed of the slot itself. It's limited by what your GPU is capable of.

If ASRock says it's a 5.0 x16 slot, I'm inclined to believe them. I don't think AMD has ever set it in stone that B650 can't have it.

It's an odd design choice, because B650 and B650E Steel Legend are not simple PCB sharing boards, so it was not a low effort copy paste on ASRock's part.
Click to expand...
You could be right about this, now i see the comment on the item. I will test later today with an 2060, that was a gen 3 as far as i know.

Still BIOS/UEFI should have option to set PICE gen as far as i know.

1716019771496.png
 
Space Lynx

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taka said:
You could be right about this, now i see the comment on the item. I will test later today with an 2060, that was a gen 3 as far as i know.

Still BIOS/UEFI should have option to set PICE gen as far as i know.

View attachment 347841
Click to expand...

I looked everywhere in BIOS and could not find it.

something you just reminded of though, "bus interface"

can bus interface as a terminology apply to nvme lanes? or only to gpu? because if its gpu only, then we have our answer, as cpu-z has shown this as I posted before:

1716020821591.png


but again I am just unsure, this might apply to nvme or gpu, or both

what does GT/s mean? is that gpu specific?
 
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a Gen5 NVME in an extremely short-traced adapter, would be what I'd use.
 
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Space Lynx said:
I looked everywhere in BIOS and could not find it.

something you just reminded of though, "bus interface"

can bus interface as a terminology apply to nvme lanes? or only to gpu? because if its gpu only, then we have our answer, as cpu-z has shown this as I posted before:

View attachment 347842

but again I am just unsure, this might apply to nvme or gpu, or both

what does GT/s mean? is that gpu specific?
Click to expand...

32GT/s is the spec for PCIe 5.0 per lane. So it doesn't look like that is specifically referring to x16 5.0 support.
 
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Space Lynx said:
I am going into BIOS now to try to find if my BIOS shows this anywhere, thank you @taka
Click to expand...
Did you find the option in BIOS to select PCI-E 5.0 for the x16 slot?
There has to be somewhere this...

Im curious!
 
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Here is my thoughts.

CPUZ bus speed is likely showing the bus speed the CPU can communicate at so unrelated to specific slots.
GPUZ will show max speed as what is negotiated, so e.g. in my case I am using a gen 5 slot with a gen 4 GPU, so it shows gen 4.
All bios's I have used allow you to set the gen speed of the slot in the bios, so looking in there would perhaps be an indicator. (all my current boards are asrock also)
Finally the motherboard spec sheet.

My B450 Pro 4 as an example almost all review sites said its 2nd full length slot is only gen 2 fed from chipset (probably fed from media rep on review guide, and didnt test), but asrock (correctly) state that 2nd slot is gen 3 from the CPU (currently used with gen3 ahci adaptor for my NAS drives).
 
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Just for curiosity's sake I compared the Steel Legend B650 with the B650E, and if the (regular) B650 truly supports PCIe 5.0 then why would anyone ever buy the 650E when you're losing a PCIe slot? Specifically talking about the Steel Legend boards here. Which reminds me, why do recent (AMD?) boards have so few PCIe slots?
 
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azrael said:
Just for curiosity's sake I compared the Steel Legend B650 with the B650E, and if the (regular) B650 truly supports PCIe 5.0 then why would anyone ever buy the 650E when you're losing a PCIe slot? Specifically talking about the Steel Legend boards here. Which reminds me, why do recent (AMD?) boards have so few PCIe slots?
Click to expand...
Seems to be a modern trend to minimise modularity of builds and push board space to be used for M.2 instead.

Triple slot GPUs dont help this as well, as if its the case no one would ever want to install more than just a GPU.
 
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From what I interpret from the AMD specs page B650 does not support PCI-E 5.0 unless I am missing something ..........................

B650.jpg
 
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Space Lynx said:
hmm interesting idea... so in order for gen5 nvme to reach full speeds it has to be in a gen 5 gpu slot (if its using an adapter)... good idea, but I have no adapter and no gen5 drive to test this with and that's out of my budget...

would this even work though? does a gen4 gpu slot bandwidth limit a gen5 nvme drive? agh my head hurts....

edit: just to be clear I am only interested in gen5 gpu slot is it gen4 or gen5, nvme drive doesn't interest me as much
Click to expand...
You wouldnt even need to speed test it, crystaldisk info will report the negotiated link speed for the drive.

As an example on my 9900k it reported my 980 pro as a 4x4 drive running at 3x4
 
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