The first independent reviews of the new Intel Panther Lake mobile platform were released today. The processors are built on Intel's proprietary 18A (1,8 nm) process technology. Some models offer The next-generation integrated Xe3 graphics. Today's reviews are primarily devoted to this.
Most reviewers tested the Asus Zenbook Duo hybrid laptop, which features dual screens and a flagship 16-core Core Ultra X9 388H processor. The chip features four P-cores (up to 5,1 GHz), eight E-cores (up to 3,8 GHz), and four LP E-cores (up to 3,7 GHz). The processor also features a 12-core Intel Arc B390 graphics accelerator with Xe3 cores (up to 2,5 GHz). One configuration of the laptop offers a Core Ultra 9 386H processor with the same number of P-cores (up to 4,9 GHz), E-cores, and LP E-cores, but with Intel Arc graphics based on four Xe3 graphics cores (up to 2,5 GHz). The configurable TDP of Panther Lake processors ranges from 25 to 80 watts.
The Asus Zenbook Duo laptop with the Core Ultra X9 388H, which was featured in many reviews, doesn't have discrete graphics, meaning the reviewers conducted tests on the integrated graphics. The results showed that the new Intel graphics outperform the integrated AMD Radeon 890M graphics in the Ryzen AI 300 while maintaining the same power consumption. Moreover, in some cases, it reaches the performance level of the mobile GeForce RTX 4050.
Computer Base tested the Core Ultra X9 388H with the integrated Arc B390 graphics card on a laptop with LPDDR5X-9600 memory. In terms of average gaming performance at Full HD, the Arc B390 graphics card outperformed the Radeon 890M by a significant margin, both in the 25W power mode and at higher TDP settings. The website also noted minor performance differences when running the laptop on battery power and when plugged in. Overall, the Arc B390 was up to 63% faster in 25W mode than the Radeon 890M in 24W/25W mode, and even in the 65W mode of the AMD Ryzen AI 9 HX 370.
In several Notebookcheck benchmarks, the Arc B390 graphics card performed close to more power-efficient GeForce RTX 4050 laptop configurations, depending on the game and power constraints. The Arc B390 significantly outperforms the integrated Arc 140T and Arc 140V graphics cards found in Core Ultra 200 processors, and also outperforms the Radeon 890M. The integrated GPUs found in AMD Strix Halo (Ryzen AI MAX) GPUs remain faster, but operate at significantly higher power (up to 120W).
Blogger Phawx focused his tests on processor power limiting modes, which is critical for portable gaming devices. He tested the integrated Intel Arc B390 in power modes ranging from 10 to 35 watts. With identical power consumption, the Arc B390 outperformed the iGPU in the Ryzen AI 9 HX 370 in several games, including titles with low settings, and predictably widened the gap at power consumption above 20 watts.
The YouTube channel Hardware Canucks achieved similar results:
It's worth noting that these comparisons only cover Intel's flagship integrated graphics based on the Xe3 architecture. The Panther Lake processor family also uses the Arc B370 integrated graphics, which is based on 10 Xe3 cores, and also offers integrated graphics configurations with four or even two Xe3 cores, which will obviously not perform as well as the Arc B390.
Leaks indicate that Intel will continue to develop the Xe3 architecture. It won't end with Panther Lake. Next year, the Xe3P graphics architecture, often described as a "full-fledged Xe3 implementation," will debut in Nova Lake processors.
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Source: 3dnews.ru
