eGPU (Core X with 1080Ti) + Blade 15 (advanced) + Windows 1903 Performance problems, bottleneck?

[CptHero88]

Hello guys,

 

I've got severe performance problems with my eGPU setup. At least it seems to me these problems are due to Windows 1903 or Windows in general. 

 

Iam running a 2018 Blade 15 (8750H, 16GB, 1070mq) with an Razer Core X equipped with a 1080 Ti (MSI). My Monitor is a Acer 27" 144Hz Gsync with 1440p. 

The cable I use is the Razer 2m active cable for freaking 90€ (here in Germany). The system is set up pretty fresh with Windows 10 Edu running 1903.

 

My Problem:

 

I knew about the performance drop of ~10-20%. But in Battlefield 5 I got like 60 FPS regardless of the setting + microstutter. Same in Battlefield 1. Metro is running like crap and every other demanding game too. 

I tried to undervolt but actually I got more performance without, strange. Cinebench with undervolt like 980 points, without around 1080 points. Heaven stays the same around 3300 points. Which is also not what Ive expected. 

I did a thermal repaste with Kryonaut and thermal pads (1mm, 1,5mm and 2mm) which helped little with the throttling. The CPU went from ~3,0 GHz to 3,2-3,3 GHz when running at 100%. But not at all in the 3,9 GHz area when gaming. 

Is this due to the 25w limitations? How can I disable these? The new Blade 15 got a "Creater" mode which does exactly this, but how can I achive this on my "old" Blade 15?

 

I am done with testing now. Its just frustrating. Spending all the money for sub 60 FPS performance in 1440p is pure madness. 

It seems the 8750H is a HUGE bottleneck for this setup. Its running allmost any time at 100% and the 1080Ti around 20-30%. Is this due to the TB3 limitations? I recently learned that TB3 on the Blade 15 is running at around 32 Gbps not 40.

 

Hoepfully there someone here who can help me or at least tell me: Thats it. You wont get more performance.   

 

Kind regards

Julian

[Jurrunio]

29 minutes ago, CptHero88 said:

I knew about the performance drop of ~10-20%

Is this number obtained on an Razer laptop with a 1080ti? Because I remember seeing this number on some Ailenware (fancy and crazy Dell) laptop using something like a 1070 or 1080, not sure. Razer's TB3 is connected to the chipset I think and not the CPU, while 1080ti is faster than 1070 and 1080. This means the performance drop for you should be a LOT bigger than 10-20%.

 

Also since you're on 1440p, there will be more bottleneck since there's more bandwidth reserved for displaying. Try use an external monitor.

 

As for slow CPU, I blame thermal throttling. Not just CPU core, also VRM.