| ▲ | Apreche 5 hours ago |
| I heard the memory bandwidth is not just slower than on a GPU, as expected, but is significantly slower than Apple’s unified memory. |
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| ▲ | MrBuddyCasino 5 hours ago | parent [-] |
| CPU/GPU is decent (800 GB or so), memory is slowish (300GB or so). Some Apple M are slower, some are faster. |
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| ▲ | dagmx 5 hours ago | parent [-] | | Where did you get those numbers from? DGX Spark has a maximum of 273 GB/s bandwidth in ideal scenarios (hard to reach) That puts it between an M5 (153) and M5 Pro (307) | | |
| ▲ | MrBuddyCasino 2 hours ago | parent [-] | | The 900 GB/s is from the NVLink-C2C interconnect, if you were wondering about that. They quote "up to 900 GB/s of bidirectional bandwidth between GPU and CPU". Mind you thats not to/from memory, which indeed only has 273 GB/s. | | |
| ▲ | dagmx 2 hours ago | parent [-] | | Ah I see. But the only C2C equivalent on the Apple side is the UltraFusion which is 2.5TB/s if I recall correctly. |
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