ComputerBase, a German technology website, has published one of the earliest reviews of the discrete RDNA3 graphics for laptops. Despite the Radeon 7000 series for laptops being announced four months ago, laptop manufacturers have only just started shipping laptops with these graphics. However, these laptops are currently only being sent to reviewers and not yet to customers.
The Navi 33 GPU-powered RX 7600S is a basic discrete graphics card, equipped with features such as a 128-bit memory bus (with an 8GB capacity), limited PCIe Gen4 to 8 lanes, and a relatively low TDP. Despite having specs similar to those of a low-end graphics card, the RX 7600S is actually competing with NVIDIA Max-Q graphics, although it is not the fully unlocked version. It’s worth noting that, of all the graphics cards in the RDNA3 series (including desktop versions), the RX 7600S is the slowest one announced so far.
AMD has confirmed that the GPU in question comes with 28 Compute Units (1792 Shader Processors) and operates within a TDP limit of 50W to 75W. It’s worth noting that this is not the complete version of the Navi 33 GPU. According to CB’s report, the laptop that was tested can support a peak TGP setting of up to 95W, but this value drops to around 83 watts when running games that use ray tracing.
ComputerBase conducted their testing on the ASUS TUF Gaming A16 system, which features an AMD Ryzen 7 7735H processor (Rembrandt-R Zen3 APU). While the gaming laptop will also offer a Ryzen 7040HS option (Phoenix Zen4) in the future, the only graphics option available at the moment is the RX 7600S. Additionally, the system comes with DDR5-4800 memory.
The review primarily compares the Radeon RX 7600S to the GeForce RTX 4060 Laptop GPU. During testing, the RTX 4060 system had a maximum TGP of 140W, but in practical applications, it averaged at 103W (with a maximum of 107W), whereas the RX 7600S was tested at 83/88 watts respectively. What’s interesting is that the clock speeds for both architectures exceeded 2.4 GHz, with the RTX clocking in at 2612 MHz and the RX at 2446 MHz.
ComputerBase has reported that the biggest limiting factor for the RX 7600S mobile GPU is its 8GB VRAM limit, which is a more significant bottleneck than having only 8 PCIe lanes. The reviewer notes that Radeon GPUs typically require more VRAM to compete with RTX graphics.
When it comes to ray tracing tests, the RX GPU doesn’t stand a chance against NVIDIA, as it only offers half the performance of the 4060. However, when ray tracing is not being utilized, there is only a 6% difference in performance between the two GPUs at 80W.