Introduction

ASUS ROG Strix GeForce RTX 4070 Ti SUPER OC is a swanky new premium custom design graphics card leading the pack of today's round of RTX 4070 Ti SUPER graphics cards that are priced above the NVIDIA MSRP. The ASUS ROG Strix needs no introduction, it's generally regarded as one of the most over-the-top custom-design cards, featuring some of the largest cooling solutions, backed by a product design that's easily in the league of NVIDIA's Founders Edition cards, but at a steep premium. The new GeForce RTX 4070 Ti SUPER is part of a three-card refresh of the upper end of NVIDIA's RTX 40-series Ada generation. While the RTX 4070 Ti SUPER is still recommended by NVIDIA for 1440p maxed out AAA gameplay with ray tracing; even the original RTX 4070 Ti was tested by us to be capable of more; including gameplay at 4K Ultra HD with fairly high settings. The ideal situation for the RTX 4070 Ti SUPER would be 1440p high refresh-rate displays, such as 144 Hz or 165 Hz, where the GPU is able to put out high enough frame rates, with technologies such as G-SYNC smoothing things out for the output. Even at 4K, you have DLSS or the newer DLSS 3 Frame Generation at your disposal.



The SUPER brand moniker denotes performance increases at existing price points, not new features. The RTX 4070 Ti SUPER is coming in at the same starting price as the RTX 4070 Ti did, which is being phased out as a result. The AD104 powers the bulk of the RTX 4070 series, which has been maxed out with the original RTX 4070 Ti; meaning NVIDIA has to tap into the larger AD103 silicon that powers the RTX 4080, the upcoming RTX 4080 SUPER; and the mobile RTX 4090 series. The biggest specs upgrade the RTX 4070 Ti SUPER gets over its predecessor is memory. With the AD103 comes its wider 256-bit memory bus, which NVIDIA is using to drive 16 GB of memory on the RTX 4070 Ti SUPER. This memory ticks at 21 Gbps, compared to 22.5 Gbps for the RTX 4080, but is still a significant 33% increase in both memory bandwidth and size, compared to that of the RTX 4070 Ti, with its 192-bit memory bus. Since the AD103 has an SM count of 80, compared to 60 of the AD104; NVIDIA also gave the RTX 4070 Ti SUPER 10% more shaders. The ROP count also sees a 20% increase. What remain the same are the on-die cache size of 48 MB, and the power limit of 285 W.

NVIDIA carved the RTX 4070 Ti SUPER out of the 5 nm AD103 silicon by enabling 66 out of 80 SM, resulting in 8,448 CUDA cores, 264 Tensor cores, 66 RT cores, and 264 TMUs. The company also enabled 96 out of the 112 ROPs, which is still a 20% increase over the 80 ROPs of the RTX 4070 Ti. From the 64 MB of L2 cache available, however, only 48 MB is enabled. The GPU runs at a boost frequency of 2610 MHz, which ASUS has overclocked to 2670 MHz; while the memory is left untouched at 21 Gbps.

The Ada Lovelace graphics architecture powering the RTX 4070 Ti SUPER debuts generational gains in performance and energy efficiency, thanks to the new 5 nm EUV foundry node. The Ada CUDA core, besides the usual IPC gains, now supports shader execution reordering, which benefits ray tracing workloads. The 3rd generation RT core improves ray intersection performance, as well as introduces support for displaced micro-meshes, a feature that should increase the geometric complexity of ray traced objects. The new optical flow accelerator is a required hardware resource for DLSS 3 Frame Generation to work. NVIDIA also re-architected the memory sub-system to place larger on-die caches.

The ASUS ROG Strix RTX 4070 Ti SUPER OC features the same variant of its premium ROG Strix cooling solution that's featured on the ROG Strix RTX 4070 Ti; and not the larger cooler that the company uses on its RTX 4080 and RTX 4090 ROG Strix products. The heatsink, although large by RTX 4070 Ti SUPER standards with a total card weight of over 1.7 kg; is slightly smaller internally from the RTX 4080 ROG Strix, has fewer heat pipes, and lacks a vapor chamber plate. Should this make a difference? We don't think so, given that the RTX 4070 Ti SUPER has the same 285 W TGP as the RTX 4070 Ti; but then ASUS is pricing the ROG Strix RTX 4070 Ti SUPER OC at $950, a rather large $150 premium. There are several premium touches besides the cooler, including an elaborate RGB LED lighting setup, dual-BIOS, with a Quiet BIOS that runs the card at reference clocks and lower fan speeds.

Short 10-Minute Video Comparing 10x RTX 4070 Ti Super

Our goal with the videos is to create short summaries, not go into all the details and test results, which can be found in our written reviews.

Architecture

The Ada graphics architecture heralds the third generation of the NVIDIA RTX technology, an effort toward increasing the realism of game visuals by leveraging real-time ray tracing, without the enormous amount of compute power required to draw purely ray-traced 3D graphics. This is done by blending conventional raster graphics with ray traced elements such as reflections, lighting, and global illumination, to name a few. The 3rd generation of RTX introduces the new higher IPC "Ada" CUDA core, 3rd generation RT core, 4th generation Tensor core, and the new Optical Flow Processor, a component that plays a key role in generating new frames without involving the GPU's main graphics rendering pipeline. The GeForce Ada graphics architecture driving the RTX 4070 Ti SUPER leverages the TSMC 5 nm EUV foundry process to increase transistor counts.



The GeForce RTX 4070 Ti SUPER gets a significant memory sub-system uplift over the original RTX 4070 Ti, besides an increase in shaders and other on-die components. Since NVIDIA maxed out the AD104 to create the RTX 4070 Ti, the only way it could go about creating the RTX 4070 Ti SUPER is by tapping into the larger AD103 that powers the RTX 4080 and the upcoming RTX 4080 SUPER. The biggest perk of the switch to AD103 is its wider 256-bit memory bus, which allowed NVIDIA to increase the memory from 12 GB to 16 GB.

The AD103 die is built on the 5 nm EUV foundry process, with a die size of 379 mm² and 45.9 billion transistors. The chip features a PCI-Express 4.0 x16 host interface along with support for PCI resizable BAR; and its 256-bit wide GDDR6X memory interface. The GigaThread Engine serves as the main workflow controller for the GPU, dispatching work among the GPU's 7 graphics processing clusters (GPCs). Each GPC shares a Raster Engine and render backends among six texture processing clusters (TPCs), the indivisible subunit of the GPU. Each of these has two Streaming Multiprocessors (SM), and a Polymorph unit. Each SM contains 128 CUDA cores across four partitions. Half of these CUDA cores are pure-FP32; while the other half is capable of FP32 or INT32. The SM retains concurrent FP32+INT32 math processing capability. The SM also contains a 3rd generation RT core, four 4th generation Tensor cores, some cache memory, and four TMUs. One of the seven GPCs on the AD103 physically only has four TPCs.

With a total of 40 TPCs, or 80 SM, AD103 physically features 10,240 CUDA cores, 320 Tensor cores, 80 RT cores, and 320 TMUs; along with 64 MB of on-die L2 cache, and 112 ROPs. NVIDIA carved the RTX 4070 Ti SUPER out of the AD103 by enabling 66 out of 80 SM, 48 MB out of the 64 MB of L2 cache present; and 96 ROPs out of the 112 present. This results in 8,448 CUDA cores, 264 Tensor cores, 66 RT cores, 264 TMUs, 96 ROPs, and 48 MB of L2 cache. NVIDIA also disabled a few NVDEC units, giving this the same exact video acceleration configuration as the RTX 4070 Ti, with two NVENC and one NVDEC units. The 256-bit memory interface drives 16 GB of memory, however the memory runs at 21 Gbps, compared to the 22.5 Gbps of the RTX 4080, and 23 Gbps of the upcoming RTX 4080 SUPER. Even with 21 Gbps, the memory bandwidth on tap is an impressive 672 GB/s, a 33% increase over that of the original RTX 4070 Ti.

3rd Gen RT Core and Ray Tracing

The 3rd generation RT core accelerates the most math-intensive aspects of real-time ray tracing, including BVH traversal. Displaced micro-mesh engine is a revolutionary feature introduced with the new 3rd generation RT core. Just as mesh shaders and tessellation have had a profound impact on improving performance with complex raster geometry, allowing game developers to significantly increase geometric complexity; DMMs is a method to reduce the complexity of the bounding-volume hierarchy (BVH) data-structure, which is used to determine where a ray hits geometry. Previously, the BVH had to capture even the smallest details to properly determine the intersection point. Ada's ray tracing architecture also receives a major performance uplift from Shader Execution Reordering (SER), a software-defined feature that requires awareness from game-engines, to help the GPU reorganize and optimize worker threads associated with ray tracing.


The BVH now needn't have data for every single triangle on an object, but can represent objects with complex geometry as a coarse mesh of base triangles, which greatly simplifies the BVH data structure. A simpler BVH means less memory consumed and helps to greatly reduce ray tracing CPU load, because the CPU only has to generate a smaller structure. With older "Ampere" and "Turing" RT cores, each triangle on an object had to be sampled at high overhead, so the RT core could precisely calculate ray intersection for each triangle. With Ada, the simpler BVH, plus the displacement maps can be sent to the RT core, which is now able to figure out the exact hit point on its own. NVIDIA has seen 11:1 to 28:1 compression in total triangle counts. This reduces BVH compile times by 7.6x to over 15x, in comparison to the older RT core; and reducing its storage footprint by anywhere between 6.5 to 20 times. DMMs could reduce disk- and memory bandwidth utilization, utilization of the PCIe bus, as well as reduce CPU utilization. NVIDIA worked with Simplygon and Adobe to add DMM support for their tool chains.

Opacity Micro Meshes

Opacity Micro Meshes (OMM) is a new feature introduced with Ada to improve rasterization performance, particularly with objects that have alpha (transparency data). Most low-priority objects in a 3D scene, such as leaves on a tree, are essentially rectangles with textures on the leaves where the transparency (alpha) creates the shape of the leaf. RT cores have a hard time intersecting rays with such objects, because they're not really in the shape that they appear (they're really just rectangles with textures that give you the illusion of shape). Previous-generation RT cores had to have multiple interactions with the rendering stage to figure out the shape of a transparent object, because they couldn't test for alpha by themselves.


This has been solved by using OMMs. Just as DMMs simplify geometry by creating meshes of micro-triangles; OMMs create meshes of rectangular textures that align with parts of the texture that aren't alpha, so the RT core has a better understanding of the geometry of the object, and can correctly calculate ray intersections. This has a significant performance impact on shading performance in non-RT applications, too. Practical applications of OMMs aren't just low-priority objects such as vegetation, but also smoke-sprites and localized fog. Traditionally there was a lot of overdraw for such effects, because they layered multiple textures on top of each other, that all had to be fully processed by the shaders. Now only the non-opaque pixels get executed—OMMs provide a 30 percent speedup with graphics buffer fill-rates, and a 10 percent impact on frame-rates.

DLSS 3 Frame Generation

DLSS 3 introduces a revolutionary new feature that promises a doubling in frame-rate at comparable quality, it's called AI frame-generation. Building on DLSS 2 and its AI super-resolution (scaling up a lower-resolution frame to native resolution with minimal quality loss); DLSS 3 can generate entire frames simply using AI, without involving the graphics rendering pipeline, it's also possible to enable frame generation at native resolution without upscaling. Later in the article, we will show you DLSS 3 in action.


Every alternating frame with DLSS 3 is hence AI-generated, without being a replica of the previous rendered frame. This is possible only on the Ada graphics architecture, because of a hardware component called the optical flow accelerator (OFA), which assists in predicting what the next frame could look like, by creating what NVIDIA calls an optical flow-field. OFA ensures that the DLSS 3 algorithm isn't confused by static objects in a rapidly-changing 3D scene (such as a race sim). The process heavily relies on the performance uplift introduced by the FP8 math format of the 4th generation Tensor core. A third key ingredient of DLSS 3 is Reflex. By reducing the rendering queue to zero, Reflex plays a vital role in ensuring that latency with DLSS 3 enabled is at an acceptable level. A combination of OFA and the 4th Gen Tensor core is why the Ada architecture is required to use DLSS 3, and why it won't work on older architectures.

Packaging

The Card

The ASUS Strix cooler is massive. Thanks to a refreshed design language and more vibrant color theme compared to ASUS's GeForce 30 series, the card will definitely turn some heads. The color theme consists of a matte black base, with some red and blue highlights and two RGB diffusers, one at the tail end, another for the ROG Strix logo on top. The main cooler shroud and the backplate are both metal.


Dimensions of the card are 34.0 x 15.0 cm, and it weighs 1799 g.


Installation requires three slots in your system. We measured the card's width to be 63 mm.


Display connectivity includes three standard DisplayPort 1.4a ports and two HDMI 2.1a (same as Ampere and same as non-Super Ada).

NVIDIA introduced the concept of dual NVDEC and NVENC Codecs with the Ada Lovelace architecture. This means there are two independent sets of hardware-accelerators; so you can encode and decode two streams of video in parallel or one stream at double the FPS rate. While the RTX 4070 Ti features dual units, the RTX 4070 Super and RTX 4070 come with only one of them. The new 8th Gen NVENC now accelerates AV1 encoding, besides HEVC. You also get an "optical flow accelerator" unit that is able to calculate intermediate frames for videos, to smooth playback. The same hardware unit is used for frame generation in DLSS 3.


All GeForce RTX 4070 Ti Super graphics cards use the 12+4 pin ATX 12VHPWR connector, an adapter cable is included in the box.


This BIOS switch lets you toggle from the default performance BIOS to the quiet BIOS which runs a more relaxed fan curve at reference clocks.


Near the back of the card you'll find two fan headers that run the connected fans at the same speed as the GPU fans, including fan stop. This makes for a great option to control the case fans according to graphics card temperature.