Panther Lake Pounces: Intel’s 12-CPU Lineup Leaks Out

Intel’s next-gen Panther Lake laptop lineup is shaping up to be a big one. Fresh leaks point to a family of twelve mobile CPUs split across three tiers, with clear differences in graphics capability, core counts, and power targets to suit everything from gaming notebooks to ultra-portable laptops.

The standout change is the new Core Ultra X tier. These chips appear to set themselves apart with significantly stronger integrated graphics, making them ideal for thin-and-light systems that still need real GPU muscle. Another noteworthy tweak is Intel’s naming logic: where Lunar Lake used the last digit (6 or 8) to indicate on-package memory, Panther Lake reportedly uses that digit to signal iGPU strength. There’s also some chatter about whether the “X” lands before or after the number (Core Ultra X9 388H vs. Core Ultra 9 X388H), so expect some branding fine-tuning as launch approaches.

Here’s the leaked breakdown of the 12 Panther Lake CPUs.

Core Ultra X H-series (higher iGPU performance)
– Core Ultra X9 388H: 4 P-cores, 8 E-cores, 4 LPE, 12 EU Xe3 iGPU, rumored 45W TDP
– Core Ultra X7 368H: 4 P-cores, 8 E-cores, 4 LPE, 12 EU Xe3 iGPU
– Core Ultra X7 358H: 4 P-cores, 8 E-cores, 4 LPE, 12 EU Xe3 iGPU
– Core Ultra X5 328H: 4 P-cores, 4 E-cores, 4 LPE, 10 EU Xe3 iGPU

Core Ultra H-series (mainline performance)
– Core Ultra 9 385H: 4 P-cores, 8 E-cores, 4 LPE, 4 EU Xe3 iGPU
– Core Ultra 7 355H: 4 P-cores, 8 E-cores, 4 LPE, 4 EU Xe3 iGPU
– Core Ultra 7 345H: 4 P-cores, 8 E-cores, 4 LPE, 4 EU Xe3 iGPU
– Core Ultra 5 325H: 4 P-cores, 4 E-cores, 4 LPE, 4 EU Xe3 iGPU

Core Ultra U-series (thin-and-light focus)
– Core Ultra 7 360U: 4 P-cores, 0 E-cores, 4 LPE, 4 EU Xe3 iGPU
– Core Ultra 5 350U: 4 P-cores, 0 E-cores, 4 LPE, 4 EU Xe3 iGPU
– Core Ultra 5 340U: 4 P-cores, 0 E-cores, 4 LPE, 4 EU Xe3 iGPU
– Core Ultra 3 320U: 2 P-cores, 0 E-cores, 4 LPE, 4 EU Xe3 iGPU

What this means for laptop buyers
– Clear graphics tiers: The X-branded H chips carry 12 EU Xe3 iGPUs (10 EU on the X5), a notable jump over the standard H and U models with 4 EU. Expect stronger integrated graphics for gaming at modest settings, GPU-accelerated creative work, and smoother everyday visuals.
– Performance segmentation: H-series parts pair multiple performance cores (P) with efficiency cores (E) and low-power efficiency cores (LPE) for balanced power and speed in mainstream and high-performance notebooks. The U-series drops the E-cores entirely to prioritize battery life and thermals in ultraportables.
– No 3_6 tier: The leak suggests there won’t be a Core Ultra 3_6 class this round, simplifying the stack and tightening focus on the 3_5 and 3_0 families.
– Power envelopes: While only the top X9 388H is rumored at 45W, it’s a strong indicator the X line targets performance laptops, while U-series chips are expected to cap around 15W for long battery life in thin-and-light designs.

As with any pre-launch information, treat these details as preliminary until Intel officially unveils Panther Lake. If past rollouts are any guide, a full reveal of the entire stack is possible, but final names, clocks, and power figures may still shift.