PCWatch posted the first image of an ASRock Arc A750 Challenger, a custom-designed Intel Arc A750 "Alchemist" graphics card. 

ASRock displayed the card at their exhibit at the Tokyo Game Show 2022. The card looks to feature a quite well-equipped aluminium fin-stack cooling mechanism with a pair of huge 100 mm fans. The card is powered by two 8-pin PCIe power connections and has some lighting in the form of an illuminated Arc logo.

The Arc A750 has DG2-512 silicon. While the A770 utilizes all 32 Xe Cores (512 EUs, or 4,096 unified shaders), the A750 only has 28 Xe Cores (448 EUs, or 3,584 unified shaders). It also has 8 GB of 16 Gbps GDDR6 memory spread over a 256-bit wide memory interface (512 GB/s bandwidth), 448 XMX units (which speed up AI and features like XeSS), and 28 RT units. The A750's standard engine clock is set at 2.05 GHz.

Picture of the ASRock Arc A750 Challenger graphics card