![]() The GeForce RTX 30 series also support a new feature called RTX IO. ![]() HDMI 2.1 support enables 4K120P with G-Sync on some of the latest OLED TVs and allows for 8K over a single cable.Įven More Features Coming With the RTX 30 Series We should note that that is an HDMI 2.1 port, however. The USB-C connector on high-end Turing cards, which was meant to facilitate connection to VR headsets, wasn't being used often so NVIDIA nixed it. In terms of outputs, the GeForce RTX 3080 has triple full-sized DisplayPorts and a single HDMI output. Two GeForce RTX 3090s can be linked for operation in SLI, but 3-Way and 4-Way SLI configurations are not supported. The GA102 GPU has a newer 3rd Gen NVLink interface, which includes four x4 links, each providing up to 14.0625GB/sec of bi-directional bandwidth, for a total of 56.25GB/sec of bi-directional bandwidth or 112.5 GB/sec total aggregate bandwidth between two GPUs. And that’s because only the GeForce RTX 3090 supports it. You’ll notice we haven’t talked about SLI or multi-GPU much with Ampere. On the GeForce RTX 3080, which features a 320-bit memory interface, that means the GPU has up to 760GB/s of bandwidth at its disposal versus 496GB/s on the RTX 2080 Super. High-end Ampere-based GeForces will used GDDR6X memory at up to 19Gbps. GDDR6X uses new 4-level PAM4 signaling that can transmit twice as much data per clock, effectively doubling bandwidth. The top-end Ampere-based GeForce RTX 3080 and upcoming GeForce RTX 3090 also feature Micron’s bleeding-edge GDDR6X memory (the 3070 coming next month uses standard DDR6), which offers significantly higher bandwidth. 11.2 on Turing), RT-TFLOPS of up to 58 (versus 34 RT-TFLOPS in Turing), and the Tensor cores offer up to 238 TFLOPS of Int8, versus 89. The 68 RT cores in the GeForce RTX 3080 (up from 48 in the 2080 Super) offer shader performance of up to 29.8 TFLOPS (vs. The 2nd Generation RT cores have been optimized for better performance as well. But with Ampere, that second Integer path has been further augmented with an additional FP32 unit, so floating point heavy workloads have significantly more resources available. With Turing, NVIDIA did add a second math datapath - one for floating point and, one for integer. Previous-gen architectures, before Turing, had only one datapath, for example. The previous-gen Turing TA102 powering the RTX 2080 used a 12nm FinFET process and packed fewer than half the number of transistors.Īll of those additional transistors were used to enhance Ampere’s performance for essentially every type of workload you can run on GPUs. The GA102 GPU at the heart of the GeForce RTX 3080 is packing a 28 billion transistors in its 628.4mm 2 die and it is manufactured on a custom, Samsung 8nm process (8N).
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