Intel has officially unveiled Panther Lake, and the headline feature for gamers is a major leap in integrated graphics performance. Leading the charge is the Xe3-based Intel Arc B390, now positioned as Intel’s fastest iGPU ever—and one that’s suddenly making “integrated graphics” sound far more serious than it used to.
Arc graphics isn’t just surviving; it’s evolving in a big way. This time, the biggest upgrade isn’t a new standalone GPU, but a next-generation iGPU built on Intel’s Xe3 graphics architecture. And based on Intel’s own performance disclosures, the Arc B390 is shaping up to be a genuine game-changer for thin-and-light laptops, mainstream gaming notebooks, and even handheld gaming PCs.
The Arc B390 arrives as the flagship iGPU in Intel’s new Arc B-Series lineup and packs 12 Xe3 cores. Intel says that’s a sizable step up over its prior top integrated solution, and the performance figures it’s sharing are even more eye-catching. In testing done at 1080p with 2x upscaling enabled (for games that support it), Intel reports the Arc B390 delivers a 77% improvement in graphics performance over the Arc 140V found in Lunar Lake, along with a 76% uplift versus the Xe+ based Arc 140T used in Arrow Lake.
If you’re wondering about native 1080p performance—without leaning on upscaling—Intel also provided a direct comparison between a Core Ultra X9 388H equipped with Arc B390 graphics and AMD’s Ryzen AI 9 HX 370 with Radeon 890M. Across a broad selection of games at 1080p native, Intel claims an 82% uplift. It also notes the Ryzen system was running at a sustained 53W, while the Intel chip was sustained at 45W, highlighting a performance-per-watt angle that matters a lot in real laptops.
The Arc B390 doesn’t stop at competing with AMD’s best iGPU in this class. Intel also compared it to the Adreno GPU inside Qualcomm’s Snapdragon X Elite 84-100. At similar sustained power targets (50W on the Snapdragon configuration cited), Intel claims Arc B390 delivers a massive 2.6x performance lead—an enormous gap for anyone shopping Windows laptops and weighing gaming capability alongside battery life and efficiency.
Perhaps the boldest claim is Intel’s decision to put the Arc B390 iGPU up against an actual discrete laptop GPU: NVIDIA’s GeForce RTX 4050. According to Intel, at 45W sustained power, Arc B390 can match—and in some cases exceed—the RTX 4050 running at 60W sustained, averaging about 10% faster overall in its comparisons. If that holds up in independent testing, it could signal a real shake-up for entry-level gaming laptops, where discrete GPUs have traditionally been the default choice for smooth 1080p gameplay.
Intel is also leaning hard into frame generation. In showcased results that include Frame Generation and Multi-Frame Generation, the Arc B390 iGPU is said to outperform both the Radeon 890M and RTX 4050 laptop GPU in games like Battlefield 6 and Cyberpunk 2077. Intel points out that Arc B-Series iGPUs support Multi-Frame Generation up to a 4x mode—positioning it as a standout feature for boosting perceived frame rates in supported titles.
Taken together, these figures paint a clear picture of Intel’s bigger ambition: make integrated graphics good enough that buyers no longer need to automatically step up to an entry-level discrete GPU for mainstream 1080p gaming. If Arc B390-class iGPUs can regularly trade blows with parts like the RTX 4050—and do it at lower sustained power—future thin-and-light gaming laptops and handheld gaming devices could get faster, cooler, and potentially more affordable.
Now the big question is how these claims translate into real-world laptops with different cooling solutions, memory configurations, and power limits. But if Panther Lake systems ship with anything close to this level of iGPU performance, Intel’s Arc B390 could be one of the most important integrated graphics launches in years.
