Intel Core Ultra 7 265K 20-core LGA1851

The Core Ultra 7 265K posts a 4,928 single-core PassMark score, the best in our database, and a 58,619 multi-core score that lands in the top 5%. It runs cool and quiet at 125W, and owners rate it 4.7 stars across 1,469 reviews. Just budget for a new LGA1851 motherboard.

The 265K's single-core PassMark score of 4,928 is the best we've seen in our database, full stop. That translates to snappy application launches, responsive browsing, and strong performance in lightly-threaded workloads. The multi-core score of 58,619 is also near the top of the charts, which means video encoding, code compilation, and heavy multitasking all fly. Owners upgrading from older i7 chips report compile times cut in half, and that tracks with what the numbers suggest.

You get 20 threads across 8 P-cores and 12 E-cores, with a 5.5GHz boost on tap. The 36MB of L2 cache is generous, and the 30MB of L3 keeps data close to the cores. DDR5 support up to 192GB means memory bandwidth won't be a bottleneck for most people. The integrated Intel Graphics and 13 TOPS NPU are nice extras, though nobody's buying this chip for the iGPU. One thing to note: a few users mention single-core performance lags in older games, which is more of a scheduling quirk than a raw horsepower problem.

Against the AMD Ryzen 7 9800X3D, the 265K wins on multi-core throughput but gives up ground in gaming scenarios where 3D V-Cache shines. The 9800X3D is the better pure gaming chip, but the 265K is more balanced for mixed workloads. Compared to older Intel options like the Core i9 X-Series parts, the 265K absolutely crushes them on efficiency while delivering comparable or better multi-core performance at a fraction of the power draw. The G.Skill Trident Z Neo and be quiet! Dark Rock Pro 5 aren't really direct competitors since they're memory and cooling products, but they show up in our comparison set because people often bundle them with this CPU. The Dell Xeon part is a server chip that beats the 265K in some server workloads, which explains why server is this chip's weakest area at 80.8/100.

Pricing is all over the place right now. US listings range from USD 245 to USD 530 across six vendors, which is a massive spread. If you can snag this chip near the low end of that range, it's an absolute steal given the performance. At the high end, you're paying a premium that's harder to justify. Canadian buyers see a tighter range of CAD 430 to CAD 516 across three listings. The value proposition gets even better if you catch one of the Micro Center combo deals that bundle the 265K with a liquid cooler or a Z890 motherboard. For a chip that scores 97/100 for AI workloads and 96.7/100 for productivity, the lower-end prices make this one of the better performance-per-dollar plays we've seen this generation.

The Intel Core Ultra 7 265K posts a PassMark multi-core score of 58,619 and a single-core score of 4,928. That single-core number puts it at the very top of our database, which is a big deal for anyone who cares about snappy everyday performance. The multi-core score isn't far behind, landing in the top 5% of everything we've tested. You're getting 20 cores (8 P-cores and 12 E-cores) on TSMC's 3nm node, with a 5.5GHz boost clock and 30MB of L3 cache.

But the real story here is efficiency. Intel rates this at 125W base and 250W turbo, and owners consistently report it runs cool and quiet even under sustained load. That's a welcome change from the power-hungry chips of the last few generations. The catch? You'll need a new LGA1851 motherboard, and early adopters dealt with some microcode quirks. Still, with a 4.7-star average across 1,469 reviews, most buyers seem pretty happy with what they got.

If you're building a dedicated gaming rig and nothing else, the Ryzen 7 9800X3D is the better buy. The 265K's single-core performance, while excellent on paper, has been reported to lag in some older games, and the 3D V-Cache on AMD's chip simply wins in cache-hungry titles. Server workloads are also this chip's weakest area at 80.8/100, so if you're running a home lab or small business server, a Xeon or Ryzen server part might serve you better. And if you're not ready to buy a new motherboard, this chip is a non-starter since LGA1851 is a hard requirement.

The Intel Core Ultra 7 265K is a genuinely impressive chip. A 4,928 single-core PassMark score is the best we've ever recorded, and the multi-core performance is right up there too. Owners love the thermals, the efficiency, and the overall value, especially at sale prices. The 4.7-star average from nearly 1,500 reviews isn't just noise, it reflects a chip that delivers on its promises. The main friction points are the new motherboard requirement and some early microcode hiccups, but those are one-time costs and mostly resolved issues. If you're building a new system or upgrading from an older Intel platform, this is an easy recommendation.