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damianalex

(EXP GDC Beast v8.4d mPCI-E + GTX970 + ATX PSU) eGPU project for Lenovo IdeaPad Z710, i7-4700MQ, 16GB RAM, SSD, GeForce GT745M

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Hi,

I want to show you my new project.

I bought my laptop about 5 years ago.  It was never speed deamon, but for every day use, it was enough to me.

 

Its specification:

Intel i7-4700MQ

Nvidia GeForce GT745M

16GB RAM

512 SSD Adata SU800

VRR86UB.png

 

Yesterday I bought Witcher 3. Of course on 1080p it's impossible to play, because of about 10fps :D

 

So I make a decision to buy external grahpic card.

I choose GTX970 and now I am looking for occasion to buy it.

 

I've already bought EXP GDC v8.4d mPCI-E. It is used and cost about 30$.

HPDtUrp.jpg

 

I will use ATX PSU to supply graphic card, because I have old desktop PSU at home.

 

My plan:

1) unlock bios

2) buy GTX 970

3) enjoy Witcher 3!

 

BTW I try to cool down my laptop, so I replaced thermal paste to Kryonout Thermal Grizzly and make some tests. Temperatures and fps are on screenshots.

 

1) laptop on table, playing GTA V 1080p

ZDQUxs8.jpg

 

- first minute (GPU core 1045MHz)

OjIRHDe.jpg

 

-after some time, because of high temperature and GPU throlttling (GPU core drop down even to 400MHz)

LDS36M1.jpg

 

2) with thermalpad Glacier NC400 SilentiumPC

gYOAzOb.jpg

- 30 minute and longer (GPU core drop to about 900MHz)

 

3) without down case of laptop (like on picture with thermal paste) on thermalpad.

Here laptop never drops down MHz and max temp are about 72 Celsius degrees.

o87AvDd.jpg

 

 

Bacause of that I bought second down case for my laptop and I will cut there additional holes.

 

Greetings!

 

I will describe next step when I get all stuff I need!

 

 

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Nice, if you are going to cut some holes or modify the backplate you could maybe fit something like a low profile cooler like the SlimHero 56mm tal (136W TDP) or maybe the Noctua NH-L9 37mm tal (65W TDP). That would probably fix all throlttling issues and allow you to run a bit higher clocks also if you can mod the socket to fit.

 

Noctua NH-L9i, Premium Low-profile CPU Cooler for Intel LGA115x

https://www.amazon.co.uk/dp/B075SG1T3X/

 

SlimHero Low Profile CPU Cooler

https://quietpc.nl/gel-slim-hero

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