Low performance for my PCIe SSD Intel 900P

Nightlane wrote:    https://www.amazon.co.uk/MZHOU-V009S-PLUS-PCIE-Riser-Card-Black16x-NVME/dp/B09FPSC28Y/

Hello @Nightlane,

M.2 socket 2 is gen2 only and through chipset x370promontory, slow and latency.

No, don't buy the MZHOU-V009S, the signal will go through USB3 port and latency will be very high. Also the cable too long latency high, signal lost, throughput drop. Motherboard vendor don't put M.2 right next to CPU for no reason!!!

Buy any of below combinations[1] or [2]single_item_most_convenient_but possible latency.

Pre-requisite for combinations[1], the RAM height will clash with Optane900p in riser position, hence need to buy 2nd riser to clear low heigh ram (example Corsair vengence no RGB), but still clash with high height ram (example GALAX HOF 3600).

combinations[1] = cheapest & shortest PCB trace, supposingly least latency, but no mounting, need custom make DIY. Buy a M.2convertPCIe4x_riser_item[1A] plus a extend height PCIe4x_to_PCIe4x_item[1B] =

item[1A] = costs US$ 1.5 in China
https://www.aliexpress.com/item/32861465503.html
https://minerparts.com/product/pcie-4x-to-ngff-m-2-adapter-with-4-pin-power-cable/
https://www.ureach-estore.com/products/u-reach-m-2-nvme-to-pcie-adapter-m-2-m-key-to-pcie-4x

make sure can see all the PCB signal trace for full pcie 4x, not some cheap adaptor only 1x which has very few real signal trace on the PCB. Above 1st link can't see traces hence beware, 2nd and 3rd links are all full 4x traces.

item[1B] = costs US$ 1.0 in China
http://eshop.sintech.cn/index.php?main_page=product_info&cPath=7_13&products_id=603

total PCB trace extended around 2 inches versus a direct M.2_SSD. Literally equivalent to optane900p installed in PCIe2slot.


[2]single_item = costs US$ 15 in China
https://item.taobao.com/item.htm?spm=a230r.1.14.13.2fa25e1cEeXfro&id=609335122412&ns=1&abbucket=9#detail

I think R42UF_4.0 and R42UL_4.0 would be perfect match. Get the shortest 5cm length, which adds a total 3 inches PCB trace, I suspect might loose out to optane900p install in PCIe2slot.

R42UF reversed the pcie socket, I think nearly impossible to fit the optane900p in case.

R42MF needs to flip the cable 180 degrees, then optane900p installed upside down..... don't like.

The only reason for doing all these is to retain PCIe3slot for 8xlane through convertor card for extra two M.2 full 4xGen3 etc direct to CPU. Can even hardware RAID two M.2 full 4xGen3 get 7000Mb/s theoretical read/write. https://www.amazon.com/Dual-Adapter-RIITOP-Support-22110/dp/B08P57G1JW

or get cheaper two M.2 and use software raid instead.

beware not to buy card of two sockets M.2 where one is SATA the other is NVMe. When it's too cheap is usually SATA + NVMe.

personally I want more airflow for GPU, hence I bought a single socket M.2 convert PCIe without bracket hence cannot mount to case for maximum airflow around = https://www.axagon.eu/en/produkty/pcem2-1u

The pcie slot is full 16x for strength rigidity because not mounting to case.

If use short 4x only pcie, worry the weight of SSD heatsink might sag it down in long term.

If [2]single_item using 15cm long cable although can nicely mount to side casing showoff but might be very high latency.

Katana1074 wrote: Hi there I have an Intel 900p pcie ad in card they are pcie 3.0 based here's a link to my asssd score if it helps any... https://imgur.com/mmceU7V

Thank you, I am looking to have that type of performance.

cx5 wrote: Nightlane wrote:    https://www.amazon.co.uk/MZHOU-V009S-PLUS-PCIE-Riser-Card-Black16x-NVME/dp/B09FPSC28Y/ Hello @Nightlane, M.2 socket 2 is gen2 only and through chipset x370promontory, slow and latency. No, don't buy the MZHOU-V009S, the signal will go through USB3 port and latency will be very high. Also the cable too long latency high, signal lost, throughput drop. Motherboard vendor don't put M.2 right next to CPU for no reason!!! Buy any of below combinations[1] or [2]single_item_most_convenient_but possible latency. Pre-requisite for combinations[1], the RAM height will clash with Optane900p in riser position, hence need to buy 2nd riser to clear low heigh ram (example Corsair vengence no RGB), but still clash with high height ram (example GALAX HOF 3600). combinations[1] = cheapest & shortest PCB trace, supposingly least latency, but no mounting, need custom make DIY. Buy a M.2convertPCIe4x_riser_item[1A] plus a extend height PCIe4x_to_PCIe4x_item[1B] = item[1A] = costs US$ 1.5 in China https://www.aliexpress.com/item/32861465503.html https://minerparts.com/product/pcie-4x-to-ngff-m-2-adapter-with-4-pin-power-cable/ https://www.ureach-estore.com/products/u-reach-m-2-nvme-to-pcie-adapter-m-2-m-key-to-pcie-4x make sure can see all the PCB signal trace for full pcie 4x, not some cheap adaptor only 1x which has very few real signal trace on the PCB. Above 1st link can't see traces hence beware, 2nd and 3rd links are all full 4x traces. item[1B] = costs US$ 1.0 in China http://eshop.sintech.cn/index.php?main_page=product_info&cPath=7_13&products_id=603 total PCB trace extended around 2 inches versus a direct M.2_SSD. Literally equivalent to optane900p installed in PCIe2slot. [2]single_item = costs US$ 15 in China https://item.taobao.com/item.htm?spm=a230r.1.14.13.2fa25e1cEeXfro&id=609335122412&ns=1&abbucket=9#detail I think R42UF_4.0 and R42UL_4.0 would be perfect match. Get the shortest 5cm length, which adds a total 3 inches PCB trace, I suspect might loose out to optane900p install in PCIe2slot. R42UF reversed the pcie socket, I think nearly impossible to fit the optane900p in case. R42MF needs to flip the cable 180 degrees, then optane900p installed upside down..... don't like. The only reason for doing all these is to retain PCIe3slot for 8xlane through convertor card for extra two M.2 full 4xGen3 etc direct to CPU. Can even hardware RAID two M.2 full 4xGen3 get 7000Mb/s theoretical read/write. https://www.amazon.com/Dual-Adapter-RIITOP-Support-22110/dp/B08P57G1JW or get cheaper two M.2 and use software raid instead. beware not to buy card of two sockets M.2 where one is SATA the other is NVMe. When it's too cheap is usually SATA + NVMe. personally I want more airflow for GPU, hence I bought a single socket M.2 convert PCIe without bracket hence cannot mount to case for maximum airflow around = https://www.axagon.eu/en/produkty/pcem2-1u The pcie slot is full 16x for strength rigidity because not mounting to case. If use short 4x only pcie, worry the weight of SSD heatsink might sag it down in long term. If [2]single_item using 15cm long cable although can nicely mount to side casing showoff but might be very high latency.

Wow, thank you!!!

ok, I am analyzing all the combinations...

First, the M2 converter, I see that many come with the data cable connector as a power input. Can this cause problems or something? I have read about limited Amps there, etc.

well, I guess I will have to get that pcie extension... the next two photos are part of my computer insides (I like colors :-p ):
https://cdn.discordapp.com/attachments/1072856367632760942/1072872144666628126/IMG20230208142940.jpg
https://cdn.discordapp.com/attachments/1072856367632760942/1072872144997990461/IMG20230208142948.jpg

On amazon (because of the 24h delivery) I only find the 20cm cable ones like this: https://www.amazon.es/alargador-PCI-Express-hembra-Extender-Graphics/dp/B08R384PNQ or this: https://www.amazon.es/extensi%C3%B3n-PCI-Express-elevador-adaptador-tarjeta/dp/B08R37CGBB or maybe this one (same vendor, ut the PCB connections are visible :-) https://www.amazon.es/MZHOU-Adaptador-Express-Compatible-Windows/dp/B09C1BK164



But, how can I fix the 900p drive safely so it does not move? hmmm... maybe use one of those PCIE cable extensors so I can try to immobilize it in a different wat? hmmmm... looking for my plastic cable wrappers...





R42UF_4.0 and R42UL_4.0 are nice, bue... waiting a month for them to arrive!!!

My next computer case will be an open one, maybe 3d printed :-p OMG... hahah

Nightlane wrote: Wow, thank you!!! First, the M2 converter, I see that many come with the data cable connector as a power input. Can this cause problems or something? I have read about limited Amps there, etc. =or maybe this one (same vendor, ut the PCB connections are visible :-) https://www.amazon.es/MZHOU-Adaptador-Express-Compatible-Windows/dp/B09C1BK164 https://www.amazon.es/extensi%C3%B3n-PCI-Express-elevador-adaptador-tarjeta/dp/B08R37CGBB

You're welcome !!!

the M2 convertor extra socket is actually real POWER, not signal, hence no limited amperes problem. It's the same type of power for SATA HDD SSD, signal socket are smaller than power socket.

All of your new shopping links are correct and usable hence no need comment from me, except one is wrong, hence I quote the link above, it's problem is pcie 1x lane only, not full 4x lane, see the socket is very short missing many pins.

As for the 20cm cable extention, it will cause high latency, if you want maximum performance, not recommend to use long cables, keep as short as possible for lowest latency. Take reference from motherboard's original pcie lanes PCB trace, if extention cable longer than motherboard then use motherboard instead like now pcie3slot is OK. 20cm cable performance will loose benchmark to pcie3slot.

Nightlane wrote: About the option of swapping GPU and 900p, I suppose that the possible GPU performance loss is negligible. Right?

Yes, you are correct, NO GPU performance lost. I used to run my Vega64 at pcie3slot because I don't game all the time, instead the Optane900p is used all the time for everything hence it is in pcie2slot for shortest latency as well as for convenient mounting to casing and good looking instead of M.2convertRISER. But I am running M.2convertRISER again now as of writing.

Yes, swap your optane900p to pcie2slot and GPU to pcie3slot, because your GPU is full 3 slot thick, the optane900p is blocking the GPU FAN.

Also, add a "stick" of somekind to push up the GPU not let it sag down to avoid GPU's PCB break broken (seen some in youtube). I use a Chinese takeway chopstick and cut to required height and hide behind the liquid pump, haha.

My rig picture, once upon a time, https://www.overclock.net/showcase/2017-hk-3rd-system-ryzen.142934/