The 80 MHz core delivers roughly 1.25 DMIPS/MHz, so you are looking at about 100 DMIPS peak — enough for real-time control loops, protocol stacks, and moderate DSP work without needing a dedicated co-processor.
TI no longer manufactures it, so new-production designs should not target this order code. For existing BOM lines, the supply channel is limited to surplus and broker inventory. There is no official TI successor listed for this exact variant, so if you need a drop-in replacement, you will need to evaluate pin-compatible Stellaris siblings or migrate to a newer TI MCU family.
108-BGA footprint — layout and rework notes
The 108-BGA package measures 10x10 mm with a 0.8 mm ball pitch. That is a hand-solderable ball pitch if you have a decent rework station and stencil, but it is tight enough that a misaligned reflow will short adjacent balls.