TU102 and TU104 Specifications, Overclocking, and Multi-GPU
In an unusual move, NVIDIA is simultaneously launching the Turing architecture into the market with two different GPUs.
Representing the highest-end offerings we are likely to see with Turing, the TU104 and TU102 GPUs are also some of the biggest GPUs regarding silicon area occupied and transistor counts that we've ever seen.
|RTX 2080 Ti||Quadro RTX 6000||GTX 1080 Ti||RTX 2080||Quadro RTX 5000||GTX 1080||TITAN V||RX Vega 64 (Air)|
|Base Clock||1350 MHz||1455 MHz||1408 MHz||1515||1620 MHz||1607 MHz||1200 MHz||1247 MHz|
|Boost Clock||1545 MHz/
1635 MHz (FE)
|1770 MHz||1582 MHz||1710 MHz/
1800 MHz (FE)
|1820 MHz||1733 MHz||1455 MHz||1546 MHz|
|Ray Tracing Speed||10 GRays/s||10 GRays/s||—||8 GRays/s||8 GRays/s||—||—||—|
|Memory Clock||14000 MHz||14000 MHz||11000 MHz||14000 MHz||14000 MHz||10000 MHz||1700 MHz||1890 MHz|
|Memory Interface||352-bit G6||384-bit G6||352-bit G5X||256-bit G6||256-bit G6||256-bit G5X||3072-bit HBM2||2048-bit HBM2|
|Memory Bandwidth||616GB/s||672GB/s||484 GB/s||448 GB/s||448 GB/s||320 GB/s||653 GB/s||484 GB/s|
260 W (FE)
|260 W||250 watts||215W
|230 W||180 watts||250W||292|
|Peak Compute (FP32)||13.4 TFLOPS / 14.2 TFLOP (FE)||16.3 TFLOPS||10.6 TFLOPS||10 TFLOPS / 10.6 TFLOPS (FE)||11.2 TFLOPS||8.2 TFLOPS||14.9 TFLOPS||13.7 TFLOPS|
|Transistor Count||18.6 B||18.6B||12.0 B||13.6 B||13.6 B||7.2 B||21.0 B||12.5 B|
|MSRP (current)||$1200 (FE)/
At 4352, the RTX 2080 Ti features just over 20% more CUDA cores than the previous generation GTX 1080 Ti. Similarly, the RTX 2080 features 15% more CUDA cores than the GTX 1080.
Clock speeds however, seem to be mostly comparable generation-to-generation, with the base clocks of the RTX cards actually coming in a bit lower than the Pascal-based GTX 10-series GPUs.
As usual, the RTX 2080 Ti does not represent the fully enabled TU102 die, leaving room for a potential TITAN RTX in the future.
One of the most bizarre differences in Turing specifications is the needed separation between "Founder's Edition" and "Reference" specifications. Since NVIDIA is for the first time selling their Founder's Edition graphics cards as Overclocked out of the box, it will be interesting to see what, if any third party designs run at the reference clock speeds.
Speaking of overclocking, one of the most personally exciting features of Turing is NVIDIA Scanner.
Essentially, NVIDIA Scanner will be built into programs like EVGA Precision X and MSI Afterburner that will allow for automated overclocking of RTX-based graphics cards.
With one click, users can start the scanner, which will then begin applying higher frequencies, testing stability, and adjusting voltages as necessary until it reaches what NVIDIA has determined is the highest stable frequency at the lowest possible voltage.
The test load that NVIDIA is running is a math-based test, instead of a graphical one. This NVIDIA tuned workload is meant to ensure the highest level of stability across the broadest range of applications.
If you've ever had an overclock that you thought was stable only to crash on a new game title, you'll understand the problem that NVIDIA is trying to solve here.
Hardcore enthusiasts need not worry, the same level of manual overclocking support that was seen in Pascal will also be available for Turing, for users who aren't happy with the overclock from NVIDIA Scanner or want to tune the card completely themselves.
While NVIDIA is launching this feature with the RTX GPUs, they are expected to (eventually) bring NVIDIA Scanner support to older GPUs, such as the Pascal-based GTX 10-series.
The NVLink interface now handles Multi-GPU (SLI) support on Turing. While NVIDIA has been using NVLink in enterprise-level products, such as the Volta V100 GPU for a bit, Turing marks the first adoption of NVLink on a consumer graphics card.
NVLink is capable of a massive 50GB/s of bandwidth with the single link connection found on the RTX 2080, and 100GB/s with the dual link connection on the RTX 2080 Ti. This additional bandwidth won't help your current SLI experience at all but is necessary to achieve proper SLI performance at resolutions such as 8K.
With a new interface, of course, comes new bridges. NVLink bridges are set to be available alongside the retail launch of the RTX 2080 and 2080 Ti on September 20th from a wide array of partners and NVIDIA themselves.