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A mysterious Intel Arc A750 GPU sample has been spotted, featuring a massive 512-bit bus and 16 GB GDDR6 memory. The sample was obtained by user @komenezumi1006, who managed to acquire an 16 GB variant of the Arc A750 graphics card. Released in 2022, this GPU comes with 28 Xe cores based on the Alchemist Xe-HPG architecture and typically uses a 256-bit bus interface with 8 GB of GDDR6 memory. The higher-end Arc A770 featured both 8 GB and 16 GB variants with 32 Xe cores.
The card has dual 8-pin connectors, delivering up to 300W of power, while the reference TBP for the Arc A750 is 225W. The sample appears to be a single GPU variant, despite some speculation that it might have combined two GPUs with separate VRAM and bus interfaces.
The 16 GB capacity and 512-bit bus are notable as they double the typical width of the Alchemist lineup’s 256-bit buses. This configuration supports 16 GB memory but at a higher cost compared to using a more cost-effective 256-bit bus with less VRAM.
It remains unclear if Intel had initially planned to use 512-bit buses for their Alchemist series, or if this was a one-off design choice that was later abandoned in favor of the current 256-bit configuration.
Intel is currently preparing its high-end Arc Battlemage GPU, presumably the B770, which will feature a 256-bit bus and 16 GB memory.
