NVIDIA’s next-generation Blackwell GPU has been the discuss of the city for a while now. First, we realized that NVIDIA could be opting for an MCM design for its GB100, then that the chameleon was turning to TSMC and its 3nm course of for etching. Now it’s the flip of the GB202 to make information. In layman’s phrases, that is the chip that shall be used sooner or later RTX 5090!
GB202: hints at its configuration!
In broad define, kopite7kimi provides a couple of hints as to the format of the GB202. The chip might function a most of twelve GPCs, every with eight TPCs. This configuration is kind of much like the present AD102, which in its full model options 12 GPCs, however fewer TPCs: 6.
As I discussed earlier than, GA100 is 8*8, and GH100 is 8*9. GB100 could have a fundamental construction like 8*10. GB202 appears to be like like 12*8.
— kopite7kimi (@kopite7kimi) September 28, 2023
Inevitably, this enhance in TPCs per GPC mechanically results in a rise within the variety of cuda cores. Indeed, every TPC has two SMs, blocks of 128 cuda cores every. If we calculate accurately, we’ll discover a complete of 24,576 cuda cores within the GB202, a 33% enhance on the AD102.
Next, the leaker signifies that the reminiscence half could be based mostly on a 512-bit bus, which appears to be according to earlier rumors.
However, simply because the GB202 could have 24576 cuda core doesn’t imply that the long run RTX 5090 will share the identical configuration… No, it received’t. If we have a look at the present RTX 4090, it’s removed from having a full AD102. At current, the cardboard that comes closest is the RTX 6000 Ada, which has 142 energetic SMs out of a complete of 144 that make up the chip. The similar applies to reminiscence, the place it’s unlikely that we’ll see a 5090 outfitted with 512-bit GDDR7.
Finally, let’s not overlook that Blackwell’s launch ought to happen someplace in late 2024 and even 2025. Until then, issues could change.
