Counterfeit RTX 4090 GPUs with Realistic Fake Chips Surface in Market
Sophisticated counterfeit Nvidia RTX 4090 graphics cards featuring fake GPUs and memory modules nearly indistinguishable from genuine chips have entered the market. Hardware buyers are being urged to exercise extreme caution when encountering deals that seem unusually cheap. The Nvidia RTX 4090 is a highly sought-after GPU for local AI model inference, training, and gaming due to its 24GB VRAM capacity. Buyers seeking used or discounted cards face heightened risks of financial loss and non-functional hardware. Unlike older scams involving simple BIOS flashing on lower-tier GPUs, these counterfeits use physical chips and memory modules designed to visually mimic authentic AD102 GPUs and GDDR6X VRAM. As a result, visual inspection alone may not be sufficient to verify card authenticity prior to testing.
## BACKGROUND
High demand and supply constraints have made the RTX 4090 a primary target for counterfeiters and scammers, especially in second-hand markets. The GPU's popularity among local LLM practitioners stems from its high memory bandwidth and 24GB of VRAM, making it one of the most powerful consumer GPUs available.