Samsung and ASUS Geekbench scores reveal Intel’s Panther Lake CPUs | Early benchmarks hint at a generational leap in laptop performance

In two recent public Geekbench listings, we’ve finally got a glimpse at Intel’s Core Ultra 300 Panther Lake chips running in real laptops. The entries were spotted and reported by VideoCardz, which highlighted the two different Geekbench result pages. One shows an AI test using the ONNX CPU backend, and the other shows an OpenCL test focused on GPU compute.

The laptops in question are the unreleased Samsung Galaxy Book6 Pro (likely an update of our reviewed Galaxy Book5 Pro) with the Core Ultra 5 338H, and the refreshed ASUS ROG Zephyrus G14 with the Core Ultra X7 358H.

These listings give us the first proper confirmation of Intel’s naming scheme, core layouts, and Xe3 integrated GPU configurations for the upcoming Panther Lake lineup, aka Core Ultra Series 3.

Before getting into the details, it’s worth explaining how Intel’s hybrid cores work in simple terms. P-cores are performance cores for heavy workloads, E-cores are efficiency cores for lighter or background tasks, and LP-cores are low-power cores designed to save battery during basic everyday use.

Samsung Galaxy Book6 Pro leak confirms the Core Ultra 5 338H

The Core Ultra 5 338H is a 28W-class chip with 12 cores total (4P + 4E + 4LP). The Geekbench listing shows two clusters as 4 cores and 8 cores, and it reports a base clock of 1.90 GHz.

The test was run using the ONNX framework on the CPU backend, so the AI results come from CPU processing rather than the NPU. The scores include 4,136 for single precision, 1,764 for half precision, and 7,612 for quantized workloads in Geekbench AI 1.4.

The system was equipped with 32 GB of memory and was running Windows 11 Pro. These results give an early look at CPU-side AI behaviour for Panther Lake, but they don’t reflect NPU or GPU performance. AI benchmarks are also difficult to compare across devices, so this is best seen as an early snapshot rather than a complete performance picture.

ASUS ROG Zephyrus G14 leak reveals the higher-end Core Ultra X7 358H

The Core Ultra X7 358H is a beefier 28W-class chip with 16 total cores (4P + 8E + 4LP). The boost clock is listed as up to 4.7 GHz, with a base of 1.90 GHz. The GPU details show a Xe3 iGPU with 12 graphics cores, and Geekbench reports 96 compute units, which lines up with 12 Xe3 cores multiplied by 8 units each. The iGPU can also access up to 16 GB of system memory in the test, which is common for integrated graphics.

We've previously written about Intel's ongoing ARC graphics and how it'll change with Panther Lake.

The only performance results available for this listing come from the OpenCL GPU compute test, not the CPU. The OpenCL scores vary across the different runs, with results of 52,014, 51,968, 51,331, and 46,171. These numbers give a general idea of where the new Xe3 iGPU lands in Geekbench’s compute test.

VideoCardz also compared the scores against other entries in the same benchmark. In this specific OpenCL test, the results place the X7 358H’s integrated GPU close to the RTX 3050 Laptop. It also comes in above the Intel Arc A550M, and ahead of the Arc 140T integrated graphics listed for Arrow Lake. These comparisons reflect only the scores reported in Geekbench.

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