The kit is rated for a maximum of 75W TDP, so in principle, any GPU that is within that power limit or that can be turned to stay within that limit can be used however it is not recommend to use anything above 120W, even if limiting the power. Care should also be taken to ensure the GPU mounting holes are at least 40mm apart from each other otherwise the GPU mount will be too large.

Here is a shortlist of cards (for reference) that will fit in the DB4 and can be used with the CPU cooling kit  

1. https://www.zotac.com/product/graphics_card/zotac-gaming-geforce-gtx-1630
2. https://www.gigabyte.com/Graphics-Card/GV-N1650IXOC-4GD#kf
3. https://www.pny.com/pny-geforce-gtx-1650-xlr8-oc
4. https://www.msi.com/Graphics-Card/GeForce-GTX-1650-AERO-ITX-4G-OC/

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