Introduction

PNY GeForce RTX 4060 Ti XLR8 is a premium custom-design RTX 4060 Ti graphics card by the company that has established itself as a major player in the gaming graphics space, from its professional graphics and memory solutions roots. The XLR8 (pronounced "accelerate") features a large and illuminated cooling solution that makes the card look like it's from a segment above. While positioned above the $399 MSRP for the RTX 4060 Ti, this particular card is not factory-overclocked. PNY offers an identical-looking card with factory OC, called the RTX 4060 Ti XLR8 OC. You get the same cooling and power-delivery regardless, so you can try your hand in some manual overclocking.

The GeForce RTX 4060 Ti Ada is a mid-range graphics card intended to succeed the RTX 3060 Ti, and designed for 1080p AAA gaming with maxed out settings, including ray tracing. You can also game at 1440p, if you know your way around your game's graphics settings; or you can just get GeForce Experience to find the best ones. Since it's based on the latest Ada Lovelace graphics architecture and built on the 5 nm process, you get the benefit of the most energy-efficiency in this product generation, as well as exclusive features, such as DLSS 3—a path-breaking new tech that draws entire alternate frames using AI, without involving the graphics rendering machinery, so you effectively get double the frame-rates in games optimized for it. DLSS 3 is particularly relevant in this segment to enable usage of ray tracing, consistent high FPS, or both.



The GeForce RTX 40-series Ada debuts the third generation of RTX, NVIDIA's ground-breaking technology that ups realism in games by combining real-time ray traced elements with conventional raster 3D graphics. Even this bit of ray tracing requires enormous compute power, and so the company created dedicated hardware inside the GPU that takes care of these workloads. Ada debuts the 3rd generation RT core with a generational uplift in ray tracing intersection performance; and 4th generation Tensor cores, which accelerate AI deep-learning neural nets, by tapping into even newer capabilities. The faster Ada CUDA core, plus higher GPU clock-speeds, and a completely redesigned memory sub-system with larger on-die caches.

The GeForce RTX 4060 Ti debuts the 5 nm AD106 silicon to the desktop segment. It is carved out of this chip by enabling 34 out of 36 SM (streaming multiprocessors), which works out to 4,352 CUDA cores, 34 RT cores, 136 Tensor cores, 48 ROPs, and 136 TMUs. The RTX 4060 Ti being reviewed today comes with 8 GB of GDDR6 memory across a 128-bit memory interface. This is generationally narrowed compared to the 256-bit interface of the RTX 3060 Ti, but NVIDIA has redesigned the memory sub-system with Ada. NVIDIA has deployed an 8-times larger on-die last-level cache of 32 MB (compared to 4 MB on the GA104 silicon powering the RTX 3060 Ti), which the company claims reduces the load on the video memory for most frequent data-access, allowing it to narrow the memory bus.

The PNY RTX 4060 Ti XLR8 features the company's Verto EPIC-X RGB cooling solution. This dual-slot cooler uses a large aluminium fin-stack heatsink that's ventilated by three fans. There's plenty of RGB LED illumination to be had. Given that the TGP of the RTX 4060 Ti at reference speeds is rated at just 160 W, the card makes do with a single 8-pin PCIe power connector. It doesn't really need the 16-pin 12VHPWR connector that the NVIDIA Founders Edition comes with. PNY is pricing the RTX 4060 Ti XLR8 at a premium price of $450, which is why it missed out on reviews yesterday (May 23). We did present our review of its more cost-effective sibling, the RTX 4060 Ti Verto.

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 4060 Ti leverages the TSMC 5 nm EUV foundry process to increase transistor counts. At the heart of this GPU is the new AD106 silicon, with a fairly high transistor count of 22.9 billion, which is almost double that of the previous-generation GA106, and still about 30% more than the GA104. The GPU features a generationally narrower PCI-Express 4.0 x8 host interface, and a 128-bit wide GDDR6 memory interface. This is causing some controversy, and we'll present NVIDIA's explanation below. The Optical Flow Accelerator (OFA) is an independent top-level component. The chip features one NVENC and one NVDEC unit.

The essential component hierarchy is similar to past generations of NVIDIA GPUs. The AD106 silicon features 3 Graphics Processing Clusters (GPCs), each of these has all the SIMD and graphics rendering machinery, and is a small GPU in its own right. Each GPC shares a raster engine (geometry processing components) and two ROP partitions (each with eight ROP units). The GPC of the AD106 contains five Texture Processing Clusters (TPCs), the main number-crunching machinery. 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. There are 12 SM per GPC, so 1,536 CUDA cores, 48 Tensor cores, and 12 RT cores; per GPC. There are three such GPCs, which add up to 4,608 CUDA cores, 144 TMUs, 144 Tensor Cores, and 36 RT cores. Each GPC contributes 16 ROPs, so there are 48 ROPs on the silicon. The RTX 4060 Ti is carved out of the AD106 by disabling one TPC worth 256 CUDA cores. This yields 4,352 CUDA cores, 136 Tensor cores, 34 RT cores, and 136 TMUs. The ROP count is untouched at 48, as is the on-die L2 cache sees a slight reduction, which is 32 MB in size.


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 (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 introduces a revolutionary new feature that promises a doubling in frame-rate at comparable quality, it's called AI frame-generation. While it has all the features of 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. 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 frame-times with DLSS 3 are at an acceptable level, and a render-queue doesn't confuse the upscaler. 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.

Ada Rebalanced Memory Subsystem

The previous-generation GeForce RTX 3060 Ti featured a 256-bit wide GDDR6 memory interface driving its 8 GB of 14 Gbps-rated GDDR6 memory (448 GB/s memory bandwidth), which has caused some controversy with the new RTX 4060 Ti using a narrower 128-bit wide memory interface to drive 8 GB of 18 Gbps memory (288 GB/s bandwidth). With the new Ada Lovelace graphics architecture, NVIDIA has tried to re-balance the memory sub-system such that there's dependence on larger on-die caches, allowing NVIDIA to narrow down the GPU's GDDR6 memory interface. The obvious benefit of this to NVIDIA is reduced costs, let's make no mistake about it, but NVIDIA maintains that this isn't a big problem for the GPU.

The last-level cache, or L2 cache, of NVIDIA Ada GPUs is anywhere between 8-10 times larger than the ones on the previous-generation Ampere GPUs. The AD106 silicon powering the RTX 4060 Ti has a 32 MB L2 cache, compared to the 4 MB of the GA104 silicon powering the RTX 3060 Ti. NVIDIA illustrated an example of how the larger on-die LLC reduces video memory pressure (trips to GDDR6) by anywhere between 40% to 60% on the same GPU, by soaking up a larger number of memory access requests by the shaders.

The L2 cache is unified victim cache to the GPU's various GPCs and their local TPCs. Data that isn't hot enough (frequently accessed enough) to be resident on the small L1 caches of the SM, is ejected to the L2 cache, and depending on its heat, pushed to the GDDR6 video memory. The L2 cache is an order of magnitude faster than than video memory in terms of latency, and so having frequently-accessed data reside there offers a considerable benefit.


As we mentioned earlier from NVIDIA's claims, this re-balancing of the memory sub-system between the on-die LLC and video memory lowers the GPU's access to the latter by as much as 60%, which means the GPU can make do with a narrower 128-bit wide GDDR6 memory bus. NVIDIA has used generationally faster 18 Gbps memory chips in the RTX 4060 Ti. NVIDIA developed a new means of presenting the memory bandwidth that takes into account the contribution of the L2 cache, its hit-rate, and the consequent reduction in video memory traffic. While the memory bandwidth of the RTX 4060 Ti is 288 GB/s, NVIDIA claims that its "effective bandwidth" is 554 GB/s (23% higher than the 448 GB/s memory bandwidth of the RTX 3060 Ti). It's interesting to point out that NVIDIA has used "effective bandwidth" figures in the past to highlight its lossless memory compression technologies, but has never been this vocal about it.

Packaging

The Card

PNY GeForce RTX 4060 Ti XLR8 features a premium design that looks like it's from a segment above. The card looks quite imposing when installed in your case. Three large fans ventilate an aluminium fin-stack that spans the entire length of the card.


There's a subtle RGB lighting element around the middle fan.


Dimensions of the card are 30.0 x 12.0 cm, and it weighs 762 g.


Installation requires two slots in your system.


Display connectivity includes three standard DisplayPort 1.4a ports and one HDMI 2.1a (same as Ampere).

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.


PNY opted for a conventional 8-pin PCIe power connector. This configuration is rated for 225 W together with PCIe slot power, which is plenty for the RTX 4060 Ti.

Teardown

Disassembly is pretty straightforward, you undo a set of screws on the backplate, and the cooler comes off. Nothing tricky.


The XLR8 EPIC-X cooling solution by PNY uses two sets of aluminium fin-stacks that have been skewered by the cooler's three heatpipes. A nickel-plated copper baseplate makes contact with the GPU, memory, and VRM.


PNY is using three heatpipes, two of these bend smartly into the forward fin-stack.


The backplate is made of metal, and has an opening toward the rear end, so some of the airflow from the third fan can go right through.

High-resolution PCB Pictures

These pictures are for the convenience of volt modders and people who would like to see all the finer details on the PCB. Feel free to link back to us and use these in your articles, videos or forum posts.


High-resolution versions are also available (front, back).