Every so often you hear news that fake graphics cards are being sold somewhere. Often these products are sold for a more expensive model, yet have a cheaper GPU. This round in Germany have found GeForce GTX 660 and 650 4GB graphics cards that in fact are equipped with a GeForce GT 440 GPU. The BIOS of these graphics cards have been re-flashed with a new Device ID making it seem like they are a 600 series product in your control panel.
However if you benchmark them, you'll notice there's a difference real fast. The fake cards entered the German channel via distributor Kosatec. And a rather intricate detail is that they purchased the batch from the Dutch based Point of View.
Point of View on their end deny any wrongdoing as they obtained the products from from Chinese manufacturers. The parties involved and NVIDIA are investigating the issue and are planning a recall to ensure anyone who bought one of the fake cards will be able to get a refund.