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Tb3 h2d bandwith fluctuation with Asus xg Station Pro
 

Tb3 h2d bandwith fluctuation with Asus xg Station Pro  

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metalshock
(@metalshock)
New Member
Joined: 12 months ago
 

Hi. This is my very first post to that forum; I need an opinion.

I have an egpu setup with Razer Blade 15 + Asus Rog xg station pro + Evga Gtx 1080ti SC 

Everything fine with benchmarks (17xxx firestrike and around 110 furmark scores) 

But I realize that H2D bandwith (measured by cuda-z) is fluctuated and decreased with a great amount when playing some games. 

For example, in idle h2D band with is around 22xx.xx MiB/s which is perfectly normal. but when I start to play WOW, it started to give around 30-40 fps (in shadow of tomb raider I got around 100) and it is because of h2d bandwith; when WOW is running, h2d is around 10xx.xx Mib/s. when I close the game it becames normal. In other more graphic intense games like Shadow of Tomb Raider etc. it might fluctiated sometimes but not like this. How can I have more stable h2d bandwith? or it is normal somehow?

thank you for your prospective answers.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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nando4
(@nando4)
Noble Member Admin
Joined: 3 years ago
 

A CUDA-Z test on a Nvidia card not under use will give the total link H2D bandwidth.  It is expected that H2D decreases when the link is being used for gaming since it is using a portion of the bandwidth.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table


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metalshock
(@metalshock)
New Member
Joined: 12 months ago
 
Posted by: nando4

A CUDA-Z test on a Nvidia card not under use will give the total link H2D bandwidth.  It is expected that H2D decreases when the link is being used for gaming since it is using a portion of the bandwidth.

Thank you for the reply. I understand the situation now but one thing; why this huge decrease on bandwidth occurs on WOW while it is not an issue on far more graphic intense game like Shadow of Tomb Raider ? for example during WOW session; h2d locked to 10xx.xx Mib/s and stay like this. However, it might decreased but increased also; just fluctuatiated during the Shadow of Tomb Raider. 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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