The launch of Nvidia’s next-generation graphics playing cards is a good distance off, maybe as a lot as two years away. There’s loads of time for Nvidia to cut and alter no matter GPU finally ends up powering the hypothetically named RTX 50-series. The rumor mill by no means stops, although.
The newest nugget of information to floor comes from Kopite7kimi, a normally dependable supply of Nvidia info. They speculate that the flagship Nvidia RTX 50 card, presumably named the RTX 5090, could have a 512-bit reminiscence bus. That is one thing we will all admire given we had playing cards with 512-bit buses going again nicely over a decade.
Mixed with a number of sources, I affirm the gaming flagship of Ada-next could have a 512-bit reminiscence interface.July 27, 2023
Electrical complexities and manufacturing bills are sometimes cited as causes to undertake a narrower bus, but when a card just like the RTX 4090 at $1,599 does not justify a 512-bit bus, what’s going to? Following that line of considering makes me shudder on the considered what an RTX 5090 will price.
Within the case of recent GPUs, ever growing GDDR6 and GDDR6X speeds have lessened the necessity for a large reminiscence bus. If we take the RTX 4090 for example, it consists of 24GB of GDDR6X reminiscence at 21Gbps, giving it a most bandwidth of 1,008GB/s. The RTX 3090 Ti had the identical configuration, that means we did not see any gen-on-gen bandwidth enchancment, regardless of the massive uplift in general efficiency.
A 512-bit bus width paired with 21Gbps reminiscence would lead to 1,344 GB/s of bandwidth. That is a pleasant 33% improve over the RTX 4090 proper there. However 21Gbps reminiscence is so 2022. We have GDDR7 to sit up for.
If Nvidia was to equip the RTX 5090 with 32Gbps GDDR7 with a 512-bit bus, we might be taking a look at over 2TB/s of bandwidth, double that of the RTX 4090. That opens up hypothesis about why Nvidia would really feel the necessity to improve reminiscence bandwidth by that a lot. If 8K gaming ever takes off, that is the cardboard that may lead the cost. It is an thrilling prospect, although absolutely an costly one.
Ought to Nvidia select to incorporate a 512-bit bus in its subsequent gen flagship, it ought to bode nicely for the cheaper playing cards within the vary too. One of many main criticisms of the RTX 4070 and RTX 4070 Ti, and notably the RTX 4060 Ti is their slim bus widths. An improve to 192-bit and 256-bit buses for xx60 and xx70 playing cards respectively can be welcome.
The transfer to a 512-bit bus opens up the potential for some fascinating reminiscence configurations. The RTX 3090/TI and RTX 4090 all include 24GB of reminiscence, so with a 512-bit bus, playing cards with 32GB of reminiscence grow to be a definite chance.
Begin saving people. A hypothetical RTX 5090 with 32GB of GDDR7 reminiscence and a 512-bit bus might make a $1,599 RTX 4090 seem like a Greatest Purchase discount bin particular. A minimum of you may have a very long time to refill the piggy financial institution.