Intel Arc A750 GPU Sample Spotted With 16 GB GDDR6, 512-Bit Bus, and Dual 8-Pin Connectors
A surprising discovery has surfaced in the GPU enthusiast community: an Intel Arc A750 engineering sample featuring 16 GB of GDDR6 memory, a 512-bit bus interface, and dual 8-pin power connectors. The card was shared by X user komenezumi1006, raising questions about Intel’s original design plans for its Alchemist GPUs.
Sample(迫真) https://t.co/mOcETYDuEO pic.twitter.com/dMskNiV3te
— 🌾コメネズミ🐭 (@komenezumi1006) September 13, 2025
A Different Take on Arc A750
The retail Intel Arc A750, launched in 2022, is based on the ACM-G10 GPU with:
28 Xe Cores
8 GB of GDDR6 memory
256-bit bus
225W TBP
The higher-tier Arc A770 shipped with both 8 GB and 16 GB variants, paired with 32 Xe Cores and the same 256-bit interface.
The sample spotted, however, significantly deviates from this configuration:
16 GB GDDR6 VRAM
512-bit memory bus (double the production A750’s width)
Dual-slot blower-style cooler
Dual 8-pin connectors, theoretically capable of supplying up to 300W of power
Task Manager screenshots confirm the card is detected with 16 GB VRAM, and the hardware appears to be fully operational.
The existence of this sample has sparked speculation that Intel may have originally explored 512-bit bus configurations for Alchemist, before scaling back to a more cost-effective 256-bit solution. A 512-bit bus would have drastically increased memory bandwidth, though at the expense of higher board complexity and cost.
Some suggested the odd specifications might point to a dual-GPU solution, similar to Intel’s Arc Pro B60, which combines two GPUs with up to 24 GB VRAM on a 192-bit bus each. However, PCB inspection confirms the A750 sample only houses one GPU die, ruling out that possibility.
Ultimately, it seems Intel abandoned any 512-bit bus plans early in Alchemist’s development, settling on the 256-bit interface used across production Arc models. With Intel now preparing its Arc Battlemage lineup, including the expected B770 flagship with a 256-bit bus and 16 GB memory, this engineering sample offers a rare glimpse into what might have been.
Would you have liked to see Intel push a 512-bit bus design in Alchemist GPUs, even at the cost of higher pricing and power consumption?
