A contemporary piece of hypothesis on Nvidia’s next-gen Blackwell GPUs has acquired some of us involved about how the RTX 5080 may prove – bringing again dangerous recollections of the fumbled RTX 4080 launch (with that disappointing spec, and the entire fake pas with the canceled 12GB model).
Kopite7kimi, an everyday leaker on the subject of graphics playing cards on X (previously Twitter), stoked this chatter with the revelation that Blackwell’s GB203 chip (within the RTX 5080) shall be paired with a 256-bit reminiscence bus, and additional down the vary, GB205 will run with a 192-bit bus.
Thanks as all the time. GB203 is 256-bit and GB205 is 192-bit.March 12, 2024
As ever, method this assertion with warning – it’s only a rumor. VideoCardz, which flagged this up, requested for affirmation that there’d be “no 384-bit GPU in [the] Blackwell household” to which the leaker replied that “it must be like this now.”
So, that’s not a definitive assertion after all, although no leak ever is – and even when it’s Nvidia’s plan at this level, that would change. (Keep in mind, the RTX 5090 is the one Blackwell GPU supposedly as a result of launch this yr, late on, and the RTX 5080 received’t flip up till 2025 – so it is nonetheless a way out if the rumor mill is correct).
Evaluation: What does this imply for the RTX 5080 then?
A lot of the main target with Blackwell rumors to date has been on the concept the flagship RTX 5090 could have a 512-bit reminiscence bus (a lot beefier, 33% wider in actual fact, than the RTX 4090). That is the graphics card based mostly on the GB202 chip.
GB203 would be the chip down from that, the engine of the RTX 5080 as talked about, with the belief having been made that this might be a 384-bit bus, and that it’d be upgraded from the RTX 4080 which has a 256-bit bus. (In spite of everything, the RTX 5090 is making an enormous leap from 384-bit to 512-bit, in concept, and all efficiency rumors level to it being an excellent candidate for our roundup of the finest graphics playing cards).
Apparently, that isn’t the case, and with a halved reminiscence bus in comparison with the flagship Blackwell graphics card, this has some PC avid gamers nervous that perhaps the RTX 5080 shall be a sizeable step down on the efficiency entrance from the 5090.
Nonetheless, we have to be cautious right here. Firstly, this might be inaccurate or Nvidia may change its thoughts, as already famous. Secondly, if the choice has been made to take care of a 256-bit bus with the xx80 mannequin, Nvidia might produce other enhancements on the reminiscence facet of the equation that this matches in with. (This revelation has additionally been taken as a touch that Nvidia is operating with 16GB of VRAM with the RTX 5080).
Regardless of the case, the spec that Nvidia shoots for should equal, or barely higher, the RTX 4090, for it to make sense – and we are able to nonetheless absolutely count on that to occur. Or, the pricing is perhaps adjusted, which may prove even higher for the patron – although to be truthful, we discover it onerous to envisage a extra reasonably priced xx80-class GPU.
In brief, we’d advise you to not fear about what’s flying across the rumor mill in the mean time. Nvidia will make the relative worth proposition – efficiency per buck for the RTX 5080 – make sense in comparison with its predecessor, just because it has to take action. It’s precisely the RTX 4080 launch being so badly judged which ought to – we hope – guarantee that Nvidia ensures that the RTX 5080 received’t be seen in the identical gentle.
Nonetheless, that doesn’t preclude the chance that the Blackwell successor to the RTX 4080 might be very barely worse off comparatively, after all. All of this stays hypothesis, and we’ll want to attend till later within the rumor cycle to see if these theories across the lesser spec reminiscence bus persist.
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