Please help, thank you!
From a performance standpoint, they appear to be identical. 850Mhz on the stock and 925 on the boost clocks. The 3L having the non-reference style cooler would get my vote. But, it depends on the application you want to use it for really.
The 3L has 2 DVI, 1 HDMI and 1 full size displayport. The non-reference cooler is probably superior to the 4L.
The 4L has 1 DVI 1 HDMI and 2 minidisplayports. The reference cooler probably will not cool as well, however the reference cards are a little thinner if that might help with cross-fire if space between card slots is an issue.
Either way, performance wise they should be close or identical. Hope this helps and good luck.
Thank you, my purpose would be for gaming, streaming, and mild photo/video editing...not much though. Which would be better for my purposes? I don't plan to crossfire, i just plan to run dual monitors.
Depends on your video resolution needs. If you are running 2 monitors using standard DVI connectors at 1920 x 1080p, go with the 3L. If you need higher resolutions, you should check out the connectors to see what will work best for what you use it for.