Thanks to everyone for their comments and suggestions. I spoke to a smarter customer service rep at VisionTek and he confirmed that the card dimensions listed in the Amazon link were most likely the package dimensions and not specific to the 5450 card and this was confirmed by the of the card by Speedstep. The Visiontek rep also suggested that a better card to get would be the VisionTek GForce GT 710 2GB card as it fit in the Inspiron 3847 case as well with the 300W original PSU able to power it and it allowed 3 outputs hdmi, dvi and vga which would allow me to use 3 monitors rather than just two with the Radeon 5450.  So for less than $10 more I got the GT 710 card and the displays are alot more responsive, no lagging or stuttering with videos and generally faster graphics. [URL] I found it for less at Amazon. All set for now until I upgrade the RAM to 16 GB at some point in the future. Jon
Hi everyone: I have an older Inspiron 3847 with integrated graphics (Intel HD 4600), 8 GB RAM, i5, 300W power supply. I run two monitors with the integrated graphics. I upgraded the OS to Win10 and now have started to see lagging when trying to run a video while browsing on the internet. Will adding a modest dedicated graphics card like the VisionTek Radeon 5450 help with the lagging I'm getting of late? I've read of problems installing video cards on the Inspirons that have UEFI Bios - will that be a problem? I'm trying to find an economical graphics card that will (I hope) help with the video lagging I get when the PC is running an mp3 or mov file. I was looking at the VisionTek Radeon 5450 but not sure if that will work with this old Inspiron.   I don't want to upgrade the Power Supply so appreciate any feedback.
Want to upgrade Inspiron 3847 with an economical graphics card