Intel Core Ultra 5 338H Spotted Boasting Arc B370 Graphics; On Par With Radeon 880M

Oct 24, 2025 at 09:31am EDT
Intel Xe3 Graphics Official: Over 50% Faster Than Xe2, Enhanced RT Units, 12 Xe Cores For Panther Lake "Arc B-Series" iGPU & Xe3P Successor For Next-Gen Arc

Panther Lake's budget offering was benchmarked on Geekbench, showcasing its iGPU's prowess, which is roughly on the same level as AMD Radeon 880M.

12-Core Intel Core Ultra 5 338H Panther Lake CPU to Feature Arc B370 iGPU; Scores 39,406 Points in Geekbench Vulkan Test

Since Intel Panther Lake is expected to launch in a few months, we are witnessing benchmark leaks more frequently. The latest one is the Core Ultra 5 338H, which is one of the slowest in the PTL-H series, and was spotted on Geekbench, confirming the specifications. The results page reveal that the Ultra 5 338H boasts two clusters of cores, i.e., 4+8 cores, and we know from the reports that the processor will indeed feature 12 cores in total.

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However, these are 4-P cores + 4-E cores + 4-LP-E cores. The base clock mentioned is 1.90 GHz, but the boost clock is nearly 3.7 GHz, which appears to be too low compared to the Core Ultra X7 358H, which boasted 4.8 GHz in the leak. One should expect the boost clock closer to the X7 358H, and the log shows up to 4.7 GHz. Nonetheless, we can see that there are other specifications mentioned as well, including the cache size, and the Core Ultra 5 338H brings 3 MB of L2 and 18 MB of L3 cache.

The more interesting part is its integrated graphics, which, according to the reports, should feature 10 Xe3 GPU cores. Here, the model name is mentioned as "Arc B370", but in our previous leak, the iGPU model name wasn't mentioned for the Core Ultra X7 358H. The Arc B370 was tested in the Geekbench Vulkan test, which resulted in 39,406 points. Performance-wise, it's on par with the AMD Radeon 880M, which is present on AMD Strix Point APU, i.e., Ryzen AI 9 365, which uses RDNA 3.5 architecture for the iGPU.

Geekbench Vulkan iGPU Benchmarks
Vulkan Test
0
9000
18000
27000
36000
45000
54000
0
9000
18000
27000
36000
45000
54000
Radeon 890M
47227
Radeon 880M
42760
Arc B370
39406

Keep in mind that Geekbench results can vary greatly from test to test, but it seems like the we can expect some decent iGPU performance on the Panther Lake chips. We previously saw the 12 Xe3 cores-based iGPU on the Core Ultra X7 358H going head to head with the RTX 3050 laptop, comfortably beating even the Radeon 890M in the Geekbench OpenCL test. So, the Arc B370 should perform at least equivalent to Radeon 880M, or even better.

Intel Panther Lake-H and U lineup (Preliminary)

CPU ModelP-Cores (Cougar Cove)E-Cores (Darkmont)LP-E Cores (Skymont)CPU Clocks (Max)Xe3 iGPU CoresiGPU ClockTDP
Core Ultra X9 388H4845.1 GHz12 (B390)TBD25W (65-80W Turbo)
Core Ultra X9 386H4844.9 GHz4TBD25W (65-80W Turbo)
Core Ultra X7 368H4845.0 GHz12 (B390)TBD25W (65-80W Turbo)
Core Ultra X7 366H4844.8 GHz4TBD25W (65-80W Turbo)
Core Ultra X7 358H4844.8 GHz12 (B390)2500 MHz25W (65-80W Turbo)
Core Ultra X7 356H4844.7 GHz4TBD25W (65-80W Turbo)
Core Ultra 5 338H4444.7 GHz10 (B370)TBD25W (65-80W Turbo)
Core Ultra 5 336H4444.6 GHz4TBD25W (65-80W Turbo)
Core Ultra 7 3654044.8 GHz4TBD25W (55W Turbo)
Core Ultra 7 3554044.7 GHz4TBD25W (55W Turbo)
Core Ultra 5 3354044.6 GHz4TBD25W (55W Turbo)
Core Ultra 5 3254044.5 GHz4TBD25W (55W Turbo)
Core Ultra 5 3322044.4 GHz2TBD25W (55W Turbo)
Core Ultra 5 3222044.4 GHz2TBD25W (55W Turbo)

News Source: @BenchLeaks

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