Some Black Friday TVs and laptops are cheaper versions built for the sale, and on a store page they look almost identical to the regular model reviewers tested. Before you buy a doorbuster, look up its full model number on the brand’s site and compare its specs with the regular model’s.
Consumer Reports calls these TVs derivatives, since they’re derived from a brand’s regular models. Some are sold by only one retailer, so there’s no other store’s price to compare.
Two 65-inch TVs from one brand can have model numbers a character or two apart, yet one has a 120Hz refresh rate, meaning it redraws the picture 120 times a second, and the other 60Hz. The faster screen shows sports and video games more smoothly.
A derivative can have fewer HDMI ports, the inputs for a game console or soundbar, and the reviews you find may cover only the regular model. Laptops work the same way, since one model name can cover several versions, and the one on sale can have a slower processor or less storage than the one reviewers tested.
Before you buy, run three checks.
- Copy every letter and digit of the model number from the store page.
- Find that model on the brand’s site and compare its specs with the regular model’s: refresh rate, HDMI ports, and panel type (LED, QLED, or OLED) on a TV, or processor, memory, and storage on a laptop.
- Search reviews for that exact model number. A search that turns up only sale ads means you’d be buying it without a review.
Then look up the item’s price history, which shows whether the sale price is actually low.
Consumer Reports brings some derivatives into its lab and often finds major-brand ones that perform as well as regular models priced $100 to $150 higher. So a derivative is a sound buy when its specs match how you’ll use it, such as a 60Hz set with two HDMI ports in a guest room that only streams shows.
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