2021 Helios 300 PH315-54 - PCIe 3.0 & PCIe 4.0 NVMe SSD slots

KeyserTommasi
KeyserTommasi Member Posts: 34 Die Hard WiFi Icon
edited October 2021 in Predator Laptops
Hello,

With regards to the 2021 Helios 300 [PH315-54-760S], I need to validate my understanding of the PCIe NVMe SSD slots.

1. I believe the primary slot is a PCIe 4.0 one, and the 512GB SSD that comes with the laptop is a PCIe 4.0 SSD, whereas the secondary/empty slot is a PCIe 3.0 slot. Is that correct?

2. I have seen users putting a PCIe 4.0 SSD in a PCIe 3.0 slot, and the SSD ends up reading & writing faster than even the fastest available PCIe 3.0 SSD - which is the Samsung 970 Evo Pus 2TB - which reads at  3,500 MB/s & writes at 3,300 MB/s. Is it true that a PCIe 4.0 SSD can outperform a PCIe 3.0 SSD even though the former is being bottlenecked by the PCIe 3.0 speeds? 

@Leostat I would love your take on this, if you don't mind. Thank you.

Best Answer

  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,293 Trailblazer
    Answer ✓
    1) In this case, both slots are pcie gen4x4, see:

    GN20-E3/E5 SKU:
    • Storage 1 : M.2: SSD1 2280 (PCIe Gen4x4)
    • Storage 2 : M.2: SSD2 2280 (PCIe Gen4x4)

    2) I think it will depend on ssd read and write speed too!
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Answers

  • 1) This will depend on the version of the video card installed, see:
    GN20-P1 SKU:
    • Storage 1: M.2: SSD1 2280 (PCIe Gen4x4)
    • Storage 2 : M.2: SSD2 2280 (PCIe Gen3x4/ SATA SSD)
    GN20-E3/E5 SKU:
    • Storage 1 : M.2: SSD1 2280 (PCIe Gen4x4)
    • Storage 2 : M.2: SSD2 2280 (PCIe Gen4x4)
    You should check this information:

    2) Which link did you verify this information on? In my opinion, ssd speed will be limited to pcie 3.0 port speed.
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
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                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • KeyserTommasi
    KeyserTommasi Member Posts: 34 Die Hard WiFi Icon
    edited October 2021
    @egydiocoelho

    1. Thank you for this thorough response. Since my laptop is still on the way as we speak, I have no way of checking which SKU I will get. I'll check it out when I get it. What different versions of the RTX 3060 does the PH315-54-760S model come with? I bought mine from here: https://www.amazon.com/gp/product/B092YHJLS6/

    2. I think I should have been clearer in my explanation. When inserted into a PCIe 3.0 slot, the PCIe 4.0 SSD will still be throttled by the 4 GB/s speeds of PCIe 3.0. However, the read & write speeds (especially the latter) can be a bit faster than a PCIe 3.0 SSD. For example, the write speed on a PCIe 4.0 SSD can be 3,500 MB/s as opposed to the 3,300 MB/s that you can get from the Samsung 970 Evo Pus PCIe. 3.0 SSD. This is perhaps because of the better flash &/or SSD controller. Is my understanding correct?
  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,293 Trailblazer
    Answer ✓
    1) In this case, both slots are pcie gen4x4, see:

    GN20-E3/E5 SKU:
    • Storage 1 : M.2: SSD1 2280 (PCIe Gen4x4)
    • Storage 2 : M.2: SSD2 2280 (PCIe Gen4x4)

    2) I think it will depend on ssd read and write speed too!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • KeyserTommasi
    KeyserTommasi Member Posts: 34 Die Hard WiFi Icon
    @egydiocoelho Thank you very much! I'm so happy that my model has 2 PCIe 4.0 slots! Now I don't need to worry or think about PCIe 3.0 anymore since any future NVMe SSD updates are going to be PCIe 4.0!

    One final question: Can you just confirm that this model has a 2.5" SATA III SSD/HDD slot/bay?
  • Yes, you can install a 2.5" ssd or hard drive sata 3:

    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • KeyserTommasi
    KeyserTommasi Member Posts: 34 Die Hard WiFi Icon
    @egydiocoelho Thank you so much!
  • You are welcome!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :)