Nvidia RTX 4070 review: A cooler, quieter, cheaper, more efficient RTX 3080. And then some.
It uses the same AD104 GPU that shipped with the RTX 4070 Ti but, where that card utilises the full chip's 60 streaming multiprocessors , the latest spin of that GPU sports a cut down 46 SMs.
But this isn't a straight idiomatic fruit vs. idiomatic fruit comparison here; both the new Tensor and Ray Tracing Cores are a generation further on, the newer SMs have had a tweak, and the whole thing is built on TSMC's advanced 4nm node. That means you get a lot more efficiency out of the chip, but you can also clock the living shit out of it, too.The real difference maker isn't Deep Learning Super Sampling—Ampere's already got that down—it's Frame Generation.
You are still getting the 192-bit aggregated memory bus used in the RTX 4070 Ti here, and the same 12GB GDDR6X memory attached to it. That still takes some getting used to considering we were getting 256-bit memory buses all the way down to thein the last generation. Nvidia, however, contends that the huge rise in L2 cache means it doesn't need such an expensive, large memory bus when it can get the necessary bandwidth without one.
Ampere has its own optical flow hardware, but not on the same scale, which is why, Nvidia says, it's only enabling the sheer voodoo of Frame Generation on the RTX 40-series.
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