Intel details long-awaited Crescent Island AI GPU at Computex, boasts up to 480 GB of LPDDR5X to combat memory shortages — company shares more details of its Xe3P inference accelerator at Computex
Unusual memory choice brings lots of AI data closer to the chip for efficiency
At Computex 2026, Intel is offering a few more details and updates for its next-generation Data Center GPU product, code-named Crescent Island. The Crescent Island GPU will be built on Intel's Xe3P GPU architecture. Intel says this architecture is "built for agentic AI," and it supports a broad range of potential data types, from FP4 for high-performance AI inference all the way up to FP64, potentially for scientific computing applications. Intel isn't providing any raw throughput specs at this stage of Crescent Island's development, so we can't make any guesses about its compute performance.
Crescent Island will be a PCI Express add-in card with a 350W power target, placing its power and thermal requirements close to products like Nvidia's RTX Pro 5000 Blackwell card. But Crescent Island's architecture is quite different from anything else on the market. It forgoes GDDR or HBM memory for LPDDR5X. Intel says its Crescent Island reference design will include 160GB of LPDDR5X, but that the chip is designed to allow partners the flexibility to build accelerators with up to 480GB of memory.
Recent leaks and past analysis have suggested that Crescent Island will take a wide-and-slow approach with LPDDR5X, potentially using a 640-bit bus connecting 20 LPDDR5X devices, to achieve these high capacities. Some basic math suggests that partners would need to employ 24GB LPDDR5X modules to fully realize that memory capacity, and those modules are already available from sources like Samsung. With 10.7 Gbps LPDDR5X, Crescent Island would offer 684 GB/s of memory bandwidth.
From a design standpoint, maximizing memory capacity while maintaining adequate bandwidth will help keep more AI data close to the GPU and require less data movement, potentially making Crescent Island a more efficient inference engine compared to GPUs built with lower-capacity GDDR devices.
Going with LPDDR5X also doesn't put pressure on valuable advanced packaging capacity or compete with higher-end accelerators for scarce HBM, making it potentially easier for Intel to produce these accelerators economically and in volume. There's no word on how or where the Crescent Island package itself will be fabricated, however.
Because Crescent Island is an air-cooled card with relatively modest power requirements, it's likely ready to drop into traditional 4U or 5U GPU servers, potentially making it appealing for companies trying to develop on-premise inferencing solutions. Eight of these accelerators with a full 480GB of RAM each would produce an impressively dense server with 3.8 TB of local GPU memory, allowing for massive models or swarms of smaller AI agents to reside within one box.
Of course, orchestrating AI work across multiple GPUs requires a capable software stack to manage the entire show, and Intel touts its oneAPI stack for use with Crescent Island. oneAPI is far less widely adopted than CUDA or ROCm, but those blazing the AI inference trail on Crescent Island will find software that the company calls "open, upstreamed, and Day 0 ready" for the product.
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Intel describes Crescent Island as "coming soon" and has touted a second-half 2026 launch for the platform, so we'll presumably learn more about the product and the ecosystem building around it as we progress further into the year.
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As the Senior Analyst, Graphics at Tom's Hardware, Jeff Kampman covers everything that has to do with graphics cards, gaming performance, and more. From integrated graphics processors to discrete graphics cards to the hyperscale installations powering our AI future, if it's got a GPU in it, Jeff is on it.
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usertests I searched to bump old thread, found this instead.Reply
Recent leaks and past analysis have suggested that Crescent Island will take a wide-and-slow approach with LPDDR5X, potentially using a 640-bit bus connecting 20 LPDDR5X devices, to achieve these high capacities.
Sources up to now have been claiming a 1280-bit bus, rather than 640-bit: https://videocardz.com/newz/intel-crescent-island-gpu-to-support-lpddr5x-9600-memory-and-1-5-tb-s-bandwidth -
jp7189 I guess with a relatively slow interface the mem can be placed relatively far from the GPU as the signal integrity is easier to maintain over longer traces. So, instead of an insanely crowded central area, the mem can be mounted on the back half of the card.Reply -
cp0x This might end up being a very cost effective means to run large models. It'd be great to see Intel disrupt this part of the industry. (And I say that as an Nvidia shareholder 😂)Reply -
bit_user Reply
Oh, I'd bet it won't be full vector fp64. It's probably just scalar and implemented at 1:8 or 1:16.The article said:all the way up to FP64, potentially for scientific computing applications
That's about the same as my RTX 5070, with its 192-bit memory configuration.The article said:With 10.7 Gbps LPDDR5X, Crescent Island would offer 684 GB/s of memory bandwidth.
Oh, I wouldn't say it's far less adopted than ROCm.The article said:oneAPI is far less widely adopted than CUDA or ROCm,
Using this card really just depends on your AI framework having a oneAPI-accelerated backend, which the most popular ones do. -
cp0x Reply
Yup. I had the same thought. It's also about the same as the M5 max chip. In other words: great, but not fantastic. It's about 1/3 of what a 5090 has, IIRC ...bit_user said:That's about the same as my RTX 5070, with its 192-bit memory configuration. -
bit_user Reply
The M5 Max has 614.4 GB/s. So, about 10% lower. I saw some conflicting info about this, but I believe it has LPDDR5X-9600 @ 512-bit width.cp0x said:It's also about the same as the M5 max chip.
That's 1792 GB/s. So, the Crescent Island guestimate is 34.3% of that GPU.cp0x said:It's about 1/3 of what a 5090 has, IIRC ...
BTW, I'm not sure exactly where the author got the memory speed. So, let's not forget that this is all based on an assumption about data width and memory speed. -
samopa I wish they also released it in a half-height form factor so it can be inserted into 2U ServersReply -
usertests Reply
Leaks have been saying 1.5 TB/s for Crescent Island, and Chips and Cheese cites an Intel presentation at OCP 2025 saying up to 1.5 TB/s (then says this means 2080-bit, when it should be 1280-bit based on calculations).bit_user said:That's 1792 GB/s. So, the Crescent Island guestimate is 34.3% of that GPU.
BTW, I'm not sure exactly where the author got the memory speed. So, let's not forget that this is all based on an assumption about data width and memory speed. -
bit_user Reply
It would never fit that much memory, in a 2U form factor.samopa said:I wish they also released it in a half-height form factor so it can be inserted into 2U Servers
Some 2U servers have a riser card, so they can accept full-height cards that are oriented sideways. -
bit_user Reply
1280-bit LPDDR5X-9375 would get you to 1.5 TB/s.usertests said:Leaks have been saying 1.5 TB/s for Crescent Island, and Chips and Cheese cites an Intel presentation at OCP 2025 saying up to 1.5 TB/s (then says this means 2080-bit, when it should be 1280-bit based on calculations).