Jump to content

1080 ti / M.2 NVMe / i7-8700k - Only 16 PCIe lanes ?

MilaweaX
 Share
Go to solution Solved by brob,
3 minutes ago, MilaweaX said:

Hey forum,

 

I'm building a new rig and while doing my research i found i didn't know as much stuff as i thought i did..
I don't know how pcie lanes work..

Soo I watched Linus video on this : PCIe Lanes - PCIe 8x vs 16x in SLI

And now i wonder :

The 8700k only has 16 PCIe lanes. From what i understand the GPU will use 16x lanes in the best scenario but could use 8x
Several questions here :

1. How many CPU/PCH lanes does the mobo have ? And how do you find that number ? :o
2. Will the M.2 use the PCH lanes ?
3. Does using a 1080ti with only 8x lanes affects its performance?

4. Can I do SLI with two 1080 ti's and an M.2 with this setup?

 

Also, 5. is this M.2 compatible with the mobo,  and is it any good ? I'll use it for OS only

Rig :
ASRock Z370 Killer SLI
Intel® Core™ i7-8700K Processor
ASUS ROG STRIX GeForce® GTX 1080 TI 11GB OC Edition
Adata XPG SX8000          <- M.2

850 500gb ssd

32gb ram

1000w psu

 

Thank you guys

  1. CPU PCIe lanes can be found at ark.intel.com. Chipset PCIe lanes can also be found at the same location. Z370 for example has up to 24 PCIe 3.0 lanes. Occasionally a motherboard will have additional PCIe lanes. That information would be found on the manufacturers web page for the motherboard.
  2. Yes. Typically 4.
  3. Not noticeably. See https://www.gamersnexus.net/guides/2488-pci-e-3-x8-vs-x16-performance-impact-on-gpus
  4. Generally yes. Usually the gpu use cpu PCIe lanes while M.2 connections use chipset lanes.
  5. Yes. http://www.storagereview.com/adata_xpg_sx8000_pcie_m2_ssd_review

 

Posted

Hey forum,

 

I'm building a new rig and while doing my research i found i didn't know as much stuff as i thought i did..
I don't know how pcie lanes work..

Soo I watched Linus video on this : PCIe Lanes - PCIe 8x vs 16x in SLI

And now i wonder :

The 8700k only has 16 PCIe lanes. From what i understand the GPU will use 16x lanes in the best scenario but could use 8x
Several questions here :

1. How many CPU/PCH lanes does the mobo have ? And how do you find that number ? :o
2. Will the M.2 use the PCH lanes ?
3. Does using a 1080ti with only 8x lanes affects its performance?

4. Can I do SLI with two 1080 ti's and an M.2 with this setup?

 

Also, 5. is this M.2 compatible with the mobo,  and is it any good ? I'll use it for OS only

Rig :
ASRock Z370 Killer SLI
Intel® Core™ i7-8700K Processor
ASUS ROG STRIX GeForce® GTX 1080 TI 11GB OC Edition
Adata XPG SX8000          <- M.2

850 500gb ssd

32gb ram

1000w psu

 

Thank you guys

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Solution
3 minutes ago, MilaweaX said:

Hey forum,

 

I'm building a new rig and while doing my research i found i didn't know as much stuff as i thought i did..
I don't know how pcie lanes work..

Soo I watched Linus video on this : PCIe Lanes - PCIe 8x vs 16x in SLI

And now i wonder :

The 8700k only has 16 PCIe lanes. From what i understand the GPU will use 16x lanes in the best scenario but could use 8x
Several questions here :

1. How many CPU/PCH lanes does the mobo have ? And how do you find that number ? :o
2. Will the M.2 use the PCH lanes ?
3. Does using a 1080ti with only 8x lanes affects its performance?

4. Can I do SLI with two 1080 ti's and an M.2 with this setup?

 

Also, 5. is this M.2 compatible with the mobo,  and is it any good ? I'll use it for OS only

Rig :
ASRock Z370 Killer SLI
Intel® Core™ i7-8700K Processor
ASUS ROG STRIX GeForce® GTX 1080 TI 11GB OC Edition
Adata XPG SX8000          <- M.2

850 500gb ssd

32gb ram

1000w psu

 

Thank you guys

  1. CPU PCIe lanes can be found at ark.intel.com. Chipset PCIe lanes can also be found at the same location. Z370 for example has up to 24 PCIe 3.0 lanes. Occasionally a motherboard will have additional PCIe lanes. That information would be found on the manufacturers web page for the motherboard.
  2. Yes. Typically 4.
  3. Not noticeably. See https://www.gamersnexus.net/guides/2488-pci-e-3-x8-vs-x16-performance-impact-on-gpus
  4. Generally yes. Usually the gpu use cpu PCIe lanes while M.2 connections use chipset lanes.
  5. Yes. http://www.storagereview.com/adata_xpg_sx8000_pcie_m2_ssd_review

 

80+ ratings certify electrical efficiency. Not quality.

 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
14 minutes ago, MilaweaX said:

How many CPU/PCH lanes does the mobo have ? And how do you find that number ?

16 lanes via cpu, 8 lanes through the chipset https://www.techpowerup.com/235883/intel-coffee-lake-platform-detailed-24-pcie-lanes-from-the-chipset

16 minutes ago, MilaweaX said:

Will the M.2 use the PCH lanes ?

chipset lanes

17 minutes ago, MilaweaX said:

Does using a 1080ti with only 8x lanes affects its performance?

no

17 minutes ago, MilaweaX said:

Can I do SLI with two 1080 ti's and an M.2 with this setup?

yes

18 minutes ago, MilaweaX said:

is this M.2 compatible with the mobo,  and is it any good ?

yes

desktop

Spoiler

r5 3600,3450@0.9v (0.875v get) 4.2ghz@1.25v (1.212 get) | custom loop cpu&gpu 1260mm nexxos xt45 | MSI b450i gaming ac | crucial ballistix 2x8 3000c15->3733c15@1.39v(1.376v get) |Zotac 2060 amp | 256GB Samsung 950 pro nvme | 1TB Adata su800 | 4TB HGST drive | Silverstone SX500-LG

HTPC

Spoiler

HTPC i3 7300 | Gigabyte GA-B250M-DS3H | 16GB G Skill | Adata XPG SX8000 128GB M.2 | Many HDDs | Rosewill FBM-01 | Corsair CXM 450W

 

 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
3 minutes ago, brob said:
  1. CPU PCIe lanes can be found at ark.intel.com. Chipset PCIe lanes can also be found at the same location. Z370 for example has up to 24 PCIe 3.0 lanes. Occasionally a motherboard will have additional PCIe lanes. That information would be found on the manufacturers web page for the motherboard.
  2. Yes. Typically 4.
  3. Not noticeably. See https://www.gamersnexus.net/guides/2488-pci-e-3-x8-vs-x16-performance-impact-on-gpus
  4. Generally yes. Usually the gpu use cpu PCIe lanes while M.2 connections use chipset lanes.
  5. Yes. http://www.storagereview.com/adata_xpg_sx8000_pcie_m2_ssd_review

 

Thanks man !! Much love

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
3 minutes ago, brob said:
  1. Not noticeably. See https://www.gamersnexus.net/guides/2488-pci-e-3-x8-vs-x16-performance-impact-on-gpus

Aditionally

https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1080_PCI_Express_Scaling/24.html

"Put as much effort into your question as you'd expect someone to give in an answer"- @Princess Luna

Make sure to Quote posts or tag the person with @[username] so they know you responded to them!

 RGB Build Post 2019 --- Rainbow 🦆 2020 --- Velka 5 V2.0 Build 2021

Purple Build Post ---  Blue Build Post --- Blue Build Post 2018 --- Project ITNOS

CPU i7-4790k    Motherboard Gigabyte Z97N-WIFI    RAM G.Skill Sniper DDR3 1866mhz    GPU EVGA GTX1080Ti FTW3    Case Corsair 380T   

Storage Samsung EVO 250GB, Samsung EVO 1TB, WD Black 3TB, WD Black 5TB    PSU Corsair CX750M    Cooling Cryorig H7 with NF-A12x25

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
2 minutes ago, MilaweaX said:

Wow thank you guys for the quick replies !

Were the most active forum that ive seen, and at least for the most part, the nicest and most knowledgeable, welcome.

Specs v-v

Spoiler

Cpu: Ryzen 9 3900x @ 1.1v / Motherboard: Asus Prime X570-P / Ram: 32GB 3000Mhz 16-16-16-36 Team Vulcan (4x8GB) / Storage: 1x 1TB Lite-on EP2, 2x 128GB PM851 SSD, 3x 1TB WD Blues / Gpu: GTX Titan X (Pascal) / Case: Corsair 400c Carbide / Psu: Corsair RMi 750w / OS: Windows 10

Spoiler

I'm lonely, PM me to be my friend!

 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author

I can see that ! xD
Thanks I'm already feeling home

Link to comment
Share on other sites
Link to post
Share on other sites
  • 9 months later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing New Builds and Planning

×