HighPoint 7540 SSD RAID - slow speed?

[CyklonDX]

If both red slots are being used (i.e your gpu + nvme highpoint card) they run at pcie x8 speeds.

 

[i386]

confused. As per HWINFO report, this motherboard has 1 GEN5 and 2 GEN4 PCIEX16 slots. But my motherboard has 2 GEN5 and 1 GEN4 PCIEX16 slots. What gives?

(per manual)
you have a pcie 5.0 x16 that turns into a pcie 5.0 x8 slot when you put something in the other "pcie 5.0 x16" slot
the pcie 4.0 x16 slot is only connected to 4 pcie lanes

 

[FIGURATIVESPEECH]

If both red slots are being used (i.e your gpu + nvme highpoint card) they run at pcie x8 speeds.

Nopes, only the top slot is used, occupied by the GPU. Middle one is empty. Bottom one is for the RAID card.

 

[CyklonDX]

Nopes, only the top slot is used, occupied by the GPU. Middle one is empty. Bottom one is for the RAID card.

Try connecting your nvme card to middle one for better performance.
No GPU is capable of utilizing performance of gen5 x16 lanes. It will be fine with x8. This should give you significant boost vs what you have right now.

(going through chipset with high-bandwidth/stress device is a bad idea on its own - the passive heatsink can only do so much.)

 

[mrpasc]

Yes, but this slot is „hard wired“ with just 4 lanes. Seems no way to have more lanes, the other ones of the 20 lanes of the Z790 are hard wired to M.2_2,3,4 and Thunderbolt and I226 LAN and USB and AX210 WLAN.
So you can try the VGA in this G4 Port, but not sure if it delivers 25W or 75W.

 

[FIGURATIVESPEECH]

Try connecting your nvme card to middle one for better performance.
No GPU is capable of utilizing performance of gen5 x16 lanes. It will be fine with x8. This should give you significant boost vs what you have right now.

(going through chipset with high-bandwidth/stress device is a bad idea on its own - the passive heatsink can only do so much.)

I tried it on all 3 slots. I never got the full speed this card is capable of, but half of that. Precisely half.

 

[CyklonDX]

yeah cause this card expect pcie x16. You at the best can only provide x8.
(unless you put your GPU into that chipset slot - tho most likely not supported use case for many motherboard)

 

[UhClem]

I tried it on all 3 slots. I never got the full speed this card is capable of, but half of that. Precisely half.

But, when you tried the Highpoint card in the top PCIe slot (closest to CPU), where did you put the GPU card that originally occupied that top slot? (I suspect you put it in the 2nd slot. ??)

IF you want to see full spec performance on the Highpoint card, it NEEDS to be in the top slot; AND, the next/second/middle slot NEEDS to be unoccupied. [ie, x16/x0 layout].

 

[FIGURATIVESPEECH]

But, when you tried the Highpoint card in the top PCIe slot (closest to CPU), where did you put the GPU card that originally occupied that top slot? (I suspect you put it in the 2nd slot. ??)

IF you want to see full spec performance on the Highpoint card, it NEEDS to be in the top slot; AND, the next/second/middle slot NEEDS to be unoccupied. [ie, x16/x0 layout].

Yes, the GPU was in the middle slot. It's too thick to fit it on the bottom slot which is right next to the fans. I'll see if I can connect the GPU with a pci extension cable.

 

[FIGURATIVESPEECH]

But, when you tried the Highpoint card in the top PCIe slot (closest to CPU), where did you put the GPU card that originally occupied that top slot? (I suspect you put it in the 2nd slot. ??)

IF you want to see full spec performance on the Highpoint card, it NEEDS to be in the top slot; AND, the next/second/middle slot NEEDS to be unoccupied. [ie, x16/x0 layout].

According to the manual, the bottom pci gen 4 slot is only x4. Is that enough for rtx 4090 at all?

 

[CyklonDX]

You may suffer ~10% of performance in certain cases.
(15-20fps in worst case, but it depends on the game)
It will/would run over chipset so you can expect increased latency.

In ai/mi there may be bigger hit.

 

[ano]

Im kinda intrigued, can you tell us a bit what you use it for? what requires 28GBs vs 14GBs

 

[FIGURATIVESPEECH]

Im kinda intrigued, can you tell us a bit what you use it for? what requires 28GBs vs 14GBs

Video editing, multiple 8k streams, 100mp raw still images, thousands of them in a sequence (time lapses). I'm a photographer, time lapse artist

 

[mrpasc]

If so and you earn your money from: a proper workstation with enough PCIE for your GPU and your Highpoint card would much more fit than this gaming rig…

 

[broadband]

Try this on Workstation or Server, you will get full speed PCIe Bifurcation with or without PCIe Switch, for my cheapest HomeLab is Dell R630 (Dual Xeon E5-2660 v4)

 

[CyklonDX]

Try this on Workstation or Server, you will get full speed PCIe Bifurcation with or without PCIe Switch, for my cheapest HomeLab is Dell R630 (Dual Xeon E5-2660 v4)

it needs to be at least pcie gen4. R630 don't have it; safe bet would be r650 - but he would need to remove daughter card or raid controller to get full x16 gen4 lane.

(for x16 gen4 lane, his best in servers are supermicro servers, or TR zen3 / epyc platforms.)

 

[broadband]

Oh IC, for PCIe 4.0 you can get the cheaper Epic 7002 + Asrock / Gigabyte / Supermicro or Xeon Scale Gen3...

 

[FIGURATIVESPEECH]

Ok, so the top slot gen 5 worked. I'm getting full speed on the RAID card, after bios advanced chipset settings were set to default state.

Now I have a different problem, probably not for this forum. The Asus 4090 is massive and won't fit into the bottom slot where PCI gen 4 is. The housing hits the intake fans at the bottom of the case, which is Phanteks NV7. So the GPU is currently connected via PCI extension cable. I'm probably going to need some sort of custom bracket for it. I know I wouldn't have this problem with a server case and motherboard, but it's too late. I need to work with what I got.

 

[mrpasc]

Glad to hear that initial problem seems to be solved.
For the GPU: there are several GPU riser mount solutions out there, would start to check if the manufacturer of your case offers some.

 

[CyklonDX]

Ok, so the top slot gen 5 worked. I'm getting full speed on the RAID card, after bios advanced chipset settings were set to default state.

Now I have a different problem, probably not for this forum. The Asus 4090 is massive and won't fit into the bottom slot where PCI gen 4 is. The housing hits the intake fans at the bottom of the case, which is Phanteks NV7. So the GPU is currently connected via PCI extension cable. I'm probably going to need some sort of custom bracket for it. I know I wouldn't have this problem with a server case and motherboard, but it's too late. I need to work with what I got.

you can look at vertical gpu brackets

vertical gpu bracket | Newegg.com

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