When sourcing VGA cards in bulk, you must prioritize the GPU Chipset (NVIDIA, AMD, or Intel) as it determines the core performance. Key metrics include VRAM capacity (e.g., 8GB, 12GB GDDR6/6X) for handling high-resolution textures, Memory Bus width (128-bit, 256-bit) for data transfer speeds, and TDP (Thermal Design Power) to ensure compatibility with existing power supplies. For wholesale buyers, verifying the Clock Speed (Base/Boost) and the number of CUDA cores or Stream Processors is essential to match the product to the target market, whether it be gaming, AI processing, or office use.