If you're truly serious, and insist on playing all your games at very high detail settings and the highest possible screen resolution (for most laptops, that's 1,920 by 1,080 pixels, assuming you're playing on the laptop's screen and not an external display), you're just going to have to shell out some bucks, especially if you want that laptop to stay game-viable at those settings for more than a couple of years. Future-proofing like that demands top-end graphics silicon: Nvidia's GeForce GTX 1070 or GTX 1080. And that means spending, at current prices, $1,500 or more on your laptop.
Less-expensive mice tend to have optical sensors, which offer good tracking sensitivity and tend to map well on a variety of surfaces, including textured ones such as cloth. Laser sensors, on the other hand, map onto the same or more kinds of surfaces (including some smooth or glossy ones that may give optical sensors fits), but they can be more finicky about rough surface textures. That said, we wouldn't let one kind or the other be the main reason you choose a mouse. Likewise, some vendors market branded versions of sensors that track, say, on glass or reflective surfaces. Don't take them too seriously, as you can solve any challenging mousing surface with...a $2 mousepad.
The G3 15 has its downsides, including a Full-HD display that isn’t as bright as we’d like, frame rates that struggle to reach 60 fps on top-tier games, and a weight exceeding five pounds (although it’s not as massive as some gaming laptops). But when we compared it to the Acer Nitro 5, another budget gaming laptop we like, with an even lower price point, there was no contest. The G3 15 posted stronger benchmarks and battery life. In particular, its GTX 1050 Ti graphics showed the limitations of the Nitro 5's mere GTX 1050. Nothing wrong with the Nitro 5, but if you can afford the G3 15 we tested, it's the better choice. Read our full review.
As far as storage is concerned, hard drive prices have come down compared with solid-state drives, so finding large capacities isn't too much trouble. 1TB of storage and maybe even a small SSD alongside are common in budget laptops. The display will almost certainly be 1080p (1,920-by-1,080 resolution), as 720p is now reserved only for cheap non-gaming systems and increasingly uncommon. The RAM will likely top off at 8GB in budget laptops, but you will find some (more ideal) 16GB laptops in this range.
$1,000 - $2,000: In this price range, there are still a few Core i5's hanging around, but the majority of the configurations will have quad-core Intel Core i7 CPU with 16GB of RAM and a 1080p display. Most notebooks will feature both an SSD and an HDD (with a bump from 5,400 to 7,200 rpm) and a Nvidia GTX 1060 or 1070 GPU with at least 6GB of VRAM. You can play most games on high and clear 60fps, but adding special effects can hamper the experience on 4K resolution.