Data-Level Parallelism in Vector, SIMD, and GPU Architectures - Computer Architecture: A Quantitative Approach - page 309

FIGURE 4.21 GPU equivalent to vector terms .
A SIMD Processor is like a vector processor. The multiple SIMD Processors in GPUs act
as independent MIMD cores, just as many vector computers have multiple vector processors.
This view would consider the NVIDIA GTX 480 as a 15-core machine with hardware support