Intel Core i7 X-Series 7820X 8-core LGA 2066

A 2017 workhorse that still pulls its weight, but only if you get it cheap and already own the motherboard. Everyone else should look at used Ryzen instead.

The multi-thread score of 17181 in PassMark puts it well above average for older silicon, and the 4.3GHz boost keeps single-thread tasks feeling snappy enough. What surprised us is how well this thing holds up for video editing and 3D rendering, the quad-channel DDR4-2666 memory bandwidth gives it a real edge over mainstream chips from the same era. But the 140W TDP is no joke, and that efficiency score of 52.8 is a weak spot. You'll feel it on your power bill and in your room temperature during summer.

The Ryzen 7 9800X3D absolutely destroys this chip in every metric that matters, gaming, efficiency, single-thread, you name it. But that's also a much newer and pricier part. The more honest comparison is against a used Ryzen 7 3700X or even a 5700X, both of which give you similar multi-thread performance on a platform that still has life in it. The 7820X only wins if you specifically need quad-channel memory or already own an X299 board. Otherwise, the AMD route is smarter.

Pricing is all over the place. In Canada you'll see this chip listed anywhere from CAD 200 to CAD 704, and in Europe the spread is even wilder at EUR 411 to EUR 983. If you're paying more than CAD 300 or EUR 450 for this, you're getting ripped off. The best Canadian deal we spotted is at the low end of that range, and that's the only scenario where this makes any sense. At USD 292 for the single US listing, it's borderline. You're buying old tech, so pay old tech prices.

The Core i7-7820X is a weird time capsule from 2017. Eight cores, sixteen threads, quad-channel memory, and a socket that Intel abandoned faster than a bad habit. It was a beast for content creators back then, but in 2024 it's a used-market curiosity. The one thing to know: this chip still crunches multi-threaded workloads respectably, but you're buying into a dead platform with zero upgrade path.

If you're building a new system from scratch, skip this entirely. You'll spend more on a used X299 board than the CPU is worth, and you'll be locked into a platform with no future. Go grab a used Ryzen 7 3700X or 5700X on a B550 board instead. Better efficiency, better single-thread, and you can drop in a 5800X3D later if you want a gaming boost.

Don't buy this unless you already have an X299 motherboard sitting around or you find it dirt cheap. The 7820X was a solid chip in 2017, but the platform is dead, the power draw is rough, and modern mid-range CPUs beat it while sipping electricity. If you're building a budget workstation, go with a used AM4 setup instead. You'll get better efficiency, a real upgrade path, and similar or better performance for the same money.