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That's just not true. 3dmark shows it having a little under half the performance of a 3090 with the largest GPU, with it getting a score of 18,000 vs a 3090 hav
by ls612 5y ago
That's just not true. 3dmark shows it having a little under half the performance of a 3090 with the largest GPU, with it getting a score of 18,000 vs a 3090 having around 42,000. Scaling up linearly by a factor of 4 would lead to a comparison of 72k vs 42k, or a little less than twice as much.
- rgbrenner 5y agoIt's not going to scale linearly though. The Max has 400mb of memory bandwidth. If you attempt to use as much as possible, as single Max chip uses 220-240mb/sec. The remainder is likely because they planned to use multiple chips in later products. But 2 Maxs will completely saturate it... so that's going to be a bottleneck if they try 4 Maxs. And there would be little point going above 4. For comparison, the 3090 has almost 1TB of memory bandwidth.
- nwienert 5y agoAren’t you assuming they won’t scale the memory bandwidth?
- rgbrenner 5y agoYes, that's the way that works. To scale memory bandwidth, you would need a new chip. It wouldn't be an M1 Max anymore. If rumors of them using multiple m1 maxs is true, then they have 400mb/sec of memory bandwidth.
- GeekyBear 5y ago> they have 400mb/sec of memory bandwidth Per chiplet.