A major Nvidia Blackwell specs leak purportedly exhibits the precise variety of TPCs and GPCs for every new Nvidia gaming GPU, in addition to the reminiscence bus and GDDR configuration hooked up to every mannequin. This doesn’t give us the precise specs of future RTX 50 graphics playing cards but, however supplies our closest look but at what kind of energy Nvidia’s upcoming graphics chips ought to have the ability to muster.
We totally count on the high-end of our greatest graphics card information to be dominated by Nvidia‘s upcoming 5000 sequence graphics playing cards, as AMD isn’t anticipated to compete with a rival RDNA 4 graphics card of this energy. Nonetheless, there’s nonetheless loads to seek out out about Nvidia’s subsequent choices earlier than these form of suggestions may be made.
The brand new Nvidia Blackwell spec leak comes by way of common X/Twitter-based leaker @kopite7kimi who merely put forth the next record of Nvidia GPU specs:
- GB202 12*8 512-bit GDDR7
- GB203 7*6 256-bit GDDR7
- GB205 5*5 192-bit GDDR7
- GB206 3*6 128-bit GDDR7
- GB207 2*5 128-bit GDDR6
These GB numbers seek advice from the codenames for Nvidia’s GPUs, with the B of the codenames referencing the Blackwell structure of the GPUs. In an analogous vein, current-generation GPUs primarily based on the Ada Lovelace structure have codenames starting from AD102 to AD107. As such, the record supplied right here seemingly corresponds to the complete vary of chips, from a flagship GB202 GPU that we’d count on for use an in RTX 5090 class of card, all the way in which right down to the GB207 that we’d count on for use in RTX 5060-class playing cards.
The subsequent two numbers on this record are the GPC and TPC configurations of the GPU. GPCs, or graphics processing clusters, are the most important overarching subsections that Nvidia defines in its GPUs. Inside every GPC is an entire host of repeated graphics processing elements.
A kind of elements known as a TPC or texture processing cluster, which once more defines a smaller subsection of the GPU that comprises a number of of the identical smaller processing parts. You possibly can see the GPC/TPC relationship for the present AD102 GPU within the picture beneath.
So, from the above record we will see that GB202 will reportedly have 12 GPCs, every containing eight TPCs. Now, at this level, we’ve got to make an assumption about what’s contained in these TPCs. If we assume that Blackwell may have the identical configuration of parts inside every TPC as is utilized in Ada Lovelace then which means the GB202 will comprise a complete of 192 streaming multiprocessors (SMs). That compares to 144 SMs for AD102.
Extrapolating the specs of the opposite GPUs in an analogous method offers us the next specs from this leak:
| GPU | Structure | Graphics playing cards | GPCs | TPCs | SMs | Mem bus | Mem sort |
| GB202 | Blackwell | TBD | 12 | 8 | 192 | 512 | GDDR7 |
| GB203 | Blackwell | TBD | 7 | 6 | 84 | 256 | GDDR7 |
| GB205 | Blackwell | TBD | 5 | 5 | 50 | 192 | GDDR7 |
| GB206 | Blackwell | TBD | 3 | 6 | 36 | 128 | GDDR7 |
| GB207 | Blackwell | TBD | 2 | 5 | 20 | 128 | GDDR7 |
| AD102 | Ada Lovelace | RTX 4090 | 12 | 6 | 144 | 384 | GDDR6X |
| AD103 | Ada Lovelace | RTX 4080 Tremendous, RTX 4080, RTX 4070 Ti Tremendous | 7 | 6+4 | 84 | 256 | GDDR6X |
| AD104 | Ada Lovelace | RTX 4070 Ti , RTX 4070 | 5 | 6 | 60 | 192 | GDDR6X |
| AD106 | Ada Lovelace | RTX 4060 Ti | 3 | 6 | 38 | 128 | GDDR6 |
| AD107 | Ada Lovelace | RTX 4060 | 2 | 4 | 24 | 128 | GDDR6 |
From this we will see that, as we’d count on, Blackwell is ready to supply will increase within the sheer variety of uncooked graphics processing parts for some GPUs, however not others. Which means the step up from lower-tier playing cards to high-tier playing cards may very well be even larger with Blackwell than Ada.
Additionally notable is that this leak suggests Nvidia will use a precise variety of TPCs per GPC for every GPU, whereas this typically varies with Ada Lovelace GPUs. For AD103, for example, one GPC comprises solely 4 TPCs, not six like the remainder of the GPCs. As such, we should doubly emphasize that the above are estimated SM numbers, so solely restricted conclusions may be drawn proper now.
It’s additionally value protecting in thoughts that these GPU numbers usually don’t correspond with the configurations we see utilized in graphics playing cards. That’s as a result of the GPUs are outlined in response to the utmost potential options they’re designed to incorporate.
Nonetheless, in terms of manufacturing, errors within the course of imply that elements of the GPU usually need to be deactivated to make the chip work. That’s why the RTX 4090, for example, has solely 128 SMs when its AD102 GPU can theoretically have as much as 144.
So, it’s clearly too early to say precisely what the specs of a future RTX 5080 could be, however we’re at the very least one step nearer if we will imagine @kopite7kimi.
For extra of our ideas on what we positively do know concerning the newest graphics playing cards, see why we expect the RTX 4070 Tremendous and AMD Radeon RX 7900 GRE are the very best graphics playing cards round proper now for many players.
