A new leak suggests that the Nvidia GeForce RTX 4090 will operate at a base clock speed of 2,235 MHz. Boost clocks are set at 2,520 MHz and could go as high as 2,750 MHz. https://www.notebookcheck.net/Nvidia-GeForce-RTX-4090-slated-to-offer-a-remarkable-base-and-boost-clock-uplift-over-its-predecessor.633027.0.html
I can't believe they would go with 160 bit for the 4070, that's a big step back in bandwidth. The other issue is that the 4090 looks like it would consume a ton more power then the 4080 and not merely 30watts. That's just not possible imo.
Does lower bandwidth matter for some softwares or is it compensated by smaller chip structure, more cores, more cache and higher frequency? Only 5 2GB VRAM modules of only GDDR6 have the advantage of limiting TDP, which seems to be smaller than that of a 3080. If overall 4070 is ca. 1.3x as fast as 3080, in particular the lower bandwidth does not matter, doesn't it?
Let me calculate memory bandwidths:
RTX Bus b Speed Gb/s Bandwidth GB/s
3070 256 7 224
3080 320 9.502 380
4070 160 18 360
4080 256 21 672
So the rumoured bandwidths of 4070 and 3080 are almost the same. There is nothing related to worry about.
Well yes, but those Watt spikes will fry your 750W psu