2014 14" Razer Blade (GTX870M) [4th,4C,Q] + GTX 970 @ 4Gbps-mPCIe2 (EXP GDC 8.4) + Win8.1 [pantzer2]  

@pantzer2, very nicely done. I've added all your pics to the opening post.

Are those Lego blocks holding up the video card+PSU?

Does the 2014 Razer blade use a mPCIe or M2 eGPU interface and at what width? If not sure of the latter then plus run GPU-Z and post an image of it. Looking at the bus interface field tells us the link width.

What does GPU-Z bus interface say if you go to NVidia control panel->Adjust image settings with preview, such that the NVidia logo is spinning? Does it say x1 2.0 to indicate max performance available on your mPCIe2 interface?

Yeah sure i use only lego blocks:) I use mpcie.

 Yeah nvidia logo is spinning.

 Ui: sory for my english:)

Creative there with the lego blocks

Spinning logo on internal LCD means Optimus is working. System info screen confirms it's running at x1 2.0 (Gen2). Nicely done.

hey i have the same computer and i think my graphics card just broke (error code 43) so i am looking into a similar setup. A few questions if you could answer:

Did you need to do any bios or software modification or did it just pick up the new card right away?

also do you have to run windows 8 or will it work with windows 10?

finally is 870 the limit, or could i go for something more powerful?

Thanks so much. 

Posted by: djbutcher13

 

hey i have the same computer and i think my graphics card just broke (error code 43) so i am looking into a similar setup. A few questions if you could answer:

Did you need to do any bios or software modification or did it just pick up the new card right away?

also do you have to run windows 8 or will it work with windows 10?

finally is 870 the limit, or could i go for something more powerful?

Thanks so much. 

   

@pantzer2 reported his implementation as plug'n'play meaning assemble,connect, turn on and enjoy.

GTX10xx cards see error 43 on mPCIe interfaces: https://egpu.io/forums/expresscard-mpcie-m-2-adapters/nvidia-is-killing-off-mpciengff-m2-egpus-error-43-with-372-90/

Can use Win10 too. 

Hello @pantzer2, I'd like to connect an eGPU to my 2015 Razer Blade (GTX 970m) too, but would love to know these two things before I do it:

1. Does fan nise coming from the Blade decrease (because the internal GPU doesn't have to work)?
2. Is it possible to connect a display (or in my case a vr headset) to the external GPUs video-output?

Thanks a bunch!!

Posted by: Spectr

 Hey there,

so I'd like to know if my Razer Blade (2015 - gtx970m) will run more quietly when paired with an external GPU  (via EXP GDC 8.4d mPCIe)?
I'd think so, because the internal GPU wouldn't be active and thus doesn't need to be cooled. Only the cpu.

  

Use of an eGPU will, as you note, prevent use of the GTX970M dGPU and in doing so, lower internal chassis temps considerably. The fans will no longer need to be engaged to the same level so we expect fan noise to be noticably lower.

But why it is PCIE 2.0 when it should be 3.0? When you use the unlocked BIOS you can change it to 3

Razers Pcie works with PCIE2.0 x16. But somehow it can work with 3.0 .

Its very simple. Go into the Bios under Chipset/System Agent (SA) Configuration/NB PCIE Configuration
you just change the values into GEN3

Source:  http://forum.notebookreview.com/threads/razer-blade-egpu-bios-mod-pcie-3-0-lid-mod-power-button-mod.773520/

Tha should give improved performance non?

@hworangs, the Buyer Guide explains 2nd-5th Gen Intel CPU systems have a Gen2 mPCIe, EC or M.2 interface. Intel upspecced such PCH PCIe to Gen3 starting with 6th-Gen CPUs. This implementation's system has a 4th-Gen CPU whose PCH has Gen2 PCIe ports.