Nvidia discrete GPU for MadVR

Hey all, quick question...

I am looking into a passively cooled solution for HTPC discrete graphics card. Wish to use Nvidia specifically, for MadVR use.

I am presently looking at the following 2 cards. They are similar, and only about $5 difference in price.

1. ASUS ENGT430 DC SL/DI/1GD3
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121448

2. ASUS ENGT440 DC SL/DI/1GD3
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121469

Here is a comparison of the specs (from Newegg):
*Card comparison*

I can get the latter (the GT440) at Amazon for $66.99 after ASUS $10 rebate, so I am inclined to do that. But I wanted to check with the pros at AVS first

TIA

Thanks. Looks like the second option is out due to space limitations in my HTPC case

Looks like I'll need to do more research for other MadVR-viable options that are passive (fanless).