The ONEXGPU 2 external graphics array, built around the AMD Radeon RX 7800M, was evaluated using the 3DMark Time Spy benchmark. In this assessment, the mobile Radeon RX 7800M demonstrated a notable edge, surpassing the desktop NVIDIA GeForce RTX 4070. The test run yielded a score of 15,806 points, which represents about a 16% lead over the RTX 4070’s 13,391 points.
It is worth noting that the ONEXGPU 2 employs the OCuLink interface, which offers lower bandwidth relative to PCI Express. Consequently, the observed performance of the RX 7800M could be, on average, around 25% higher in real-world use than the recorded score. When the RX 7800M powers laptops, its performance might exceed that of the mobile RTX 4070, underscoring the potential of external solutions to close the gap with desktop-class GPUs.
The key distinction between mobile and desktop graphics cards lies in clock speeds and memory capacity. Desktop GPUs typically run at higher clocks and feature larger video memory pools, delivering superior raw performance. Mobile GPUs, by contrast, are optimized for energy efficiency and compact form factors to fit into laptops. Yet evolving mobile designs, including the RX 7800M, are delivering stronger performance and narrowing the gap relative to their desktop counterparts.
Ultimately, high-performance mobile solutions can rival traditional desktop cards when implemented as external plug-in devices. Such configurations offer laptop users substantial gains for gaming and professional workloads, providing a powerful alternative to built-in graphics in portable form factors.
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Source: VG Times