NVIDIA GeForce RTX 4090

The NVIDIA GeForce RTX 4090 is the flagship of the Ada Lovelace generation, built on a 5 nm TSMC process with 76,300 million transistors on a 609 mm² die. It carries 16,384 shading units, 512 texture mapping units, and 176 ROPs, with a base clock of 2235 MHz and a boost clock of 2520 MHz. The card is end-of-life, launched on 2022-09-19 with a launch MSRP of 1,599 USD, and is succeeded by the GeForce 50 series.

Memory Subsystem

The RTX 4090 pairs its AD102 chip with 24 GB of GDDR6X memory on a 384-bit bus. Memory speed is rated at 1313 MHz, translating to 21 Gbps effective, which yields a bandwidth of 1.01 TB/s. This configuration is substantial for high-resolution workloads; the sheer capacity allows for large texture sets and complex scenes at 4K without spilling into system RAM. The bandwidth figure supports heavy data streaming, which matters when rendering at high resolutions with maxed-out detail settings. For 8K gaming or professional rendering tasks, the 24 GB frame buffer also provides headroom for multi-tasking or loading multiple large assets simultaneously. The 384-bit bus width is a key enabler here, as it directly contributes to the 1.01 TB/s throughput. In practice, benchmark results indicate that memory bandwidth is rarely a bottleneck for this card, even in scenarios designed to stress modern GPUs. The pixel rate of 443.5 GPixel/s and texture rate of 1,290.2 GTexel/s complement the memory subsystem, ensuring that the GPU can feed its massive compute resources without stalling on texture fetches or pixel writes.

Ray Tracing and Feature Set

The RTX 4090 integrates 128 ray tracing cores and 512 tensor cores, built into the Ada Lovelace architecture. These dedicated hardware units accelerate ray-traced lighting, shadows, and reflections, as well as AI-driven features like DLSS. API support includes DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, ensuring compatibility with current and upcoming titles that leverage modern graphics APIs. The tensor cores are particularly relevant for performance-enhancing technologies that rely on neural networks; they offload AI inference tasks from the main compute units. The combination of RT cores and tensor cores means the card is well-equipped for titles that implement full ray tracing pipelines, where the hardware-accelerated traversal and shading can maintain playable frame rates. The ray tracing performance, as inferred from the core count and clock speeds, is robust, but the actual benchmark data—such as the 3DMark Steel Nomad DX12 score of 9223—reflects overall rasterization and compute strength rather than isolated RT throughput. The Vulkan score of 270615 in Geekbench suggests strong low-level API performance, which is relevant for modern game engines that use Vulkan for ray tracing and compute workloads.

How It Compares

NVIDIA Tesla T4: The RTX 4090 averages 0.4% below the Tesla T4 in overall benchmark scores (66,473 vs 66,733). This is a negligible margin, effectively placing the two cards at parity in aggregated performance. However, the Tesla T4 is a data-center-oriented card with different drivers and thermal profiles; for gaming or desktop use, the RTX 4090's feature set and memory size are far more relevant.

NVIDIA Tesla P40: The RTX 4090 is 0.5% ahead of the Tesla P40 (66,473 vs 66,127). This is a narrow lead, indicating that in pure compute throughput, the older P40 remains competitive. The RTX 4090's advantage lies in its modern architecture, ray tracing support, and 24 GB GDDR6X memory, which the P40 lacks.

AMD Radeon Pro Vega 56: The RTX 4090 scores 0.9% lower than the Radeon Pro Vega 56 (66,473 vs 67,097). The Pro Vega 56 edges out the RTX 4090 in average benchmark scores, but this is within the noise of typical benchmarking variance. The RTX 4090's superior memory bandwidth and RT core count make it the better choice for gaming and content creation, despite the slight aggregate deficit.

NVIDIA Quadro P6000: The RTX 4090 trails the Quadro P6000 by 1.3% (66,473 vs 67,320). The P6000, a workstation card, holds a small lead in averaged benchmarks. Still, the RTX 4090 offers newer generation features like DirectX 12 Ultimate and a higher memory bandwidth, which matter more for contemporary workloads.

Who Should Consider It

The RTX 4090 sits at the 91st percentile of all GPUs, meaning it outperforms the vast majority of installed hardware. For 4K gaming at maximum settings, the benchmark scores—particularly the 3DMark Steel Nomad DX12 result of 9223 and the Passmark G3D score of 38194—indicate it can handle demanding titles with ease. Users targeting high refresh rates at 1440p or stable 60 FPS at 4K will find the card more than adequate. The 24 GB VRAM also makes it suitable for 8K gaming experiments or heavy modding, where texture packs can exceed 8-12 GB. For content creators working with large 3D scenes, video editing timelines, or machine learning inference, the 82.58 TFLOPS FP32 and FP16 (1:1) compute throughput, plus the 26,613 Passmark GPU Compute score, provide substantial acceleration. However, given its end-of-life status, early adopters may look toward the successor, but the current data shows the RTX 4090 remains a top-tier option for those who need maximum performance without waiting. The OpenCL score of 317,684 and Vulkan score of 270,615 in Geekbench further confirm its versatility across different compute APIs.

Benchmark Performance

The average benchmark score for the RTX 4090 is 66,473, placing it at the 91st percentile. In 3DMark Steel Nomad DX12, it scores 9,223, a strong result for modern rasterized workloads. Geekbench OpenCL yields 317,684, while Vulkan yields 270,615, showing a 17% advantage for OpenCL—likely reflecting driver optimizations. Passmark results are varied: DirectX 10 scores 224, DirectX 11 scores 326, DirectX 12 scores 150, and DirectX 9 scores 397. These legacy API scores are lower relative to modern tests, indicating that the card is optimized for current generation APIs rather than older ones. The Passmark G2D score of 1,299 is modest for a flagship, but 2D performance is rarely a bottleneck. The Passmark G3D score of 38,194 is the headline figure, showing strong rasterization performance. The GPU Compute score of 26,613 aligns with the FP32 throughput. Compared to its nearest rivals, the RTX 4090 is effectively tied with the Tesla T4 (-0.4%), slightly ahead of the Tesla P40 (+0.5%), and slightly behind the Radeon Pro Vega 56 (-0.9%) and Quadro P6000 (-1.3%). These deltas are all within 1.5%, meaning the RTX 4090's aggregate performance is comparable to these professional cards, but its real-world gaming and feature-set advantages (ray tracing, tensor cores, 24 GB VRAM) are not captured in raw compute averages.

Power and Cooling

The RTX 4090 has a TDP of 450 W, requiring a suggested PSU of 850 W. It draws power via a single 16-pin connector, which is a change from older multi-connector designs; ensure your power supply has native support or an adapter. Cooling is handled by a triple-slot design, measuring 304 mm in length (12 inches), 137 mm in height (5.4 inches), and 61 mm in width (2.4 inches). This is a large card—verify your case has adequate clearance, both in length and width, and that the triple-slot cooler fits alongside other expansion cards. The physical size and 450 W TDP mean heat dissipation is a priority; the triple-slot cooler is necessary to manage thermals under sustained load. The PCIe 4.0 x16 interface is standard for modern motherboards, and the card's display outputs—1x HDMI 2.1 and 3x DisplayPort 1.4a—support high refresh rate monitors up to 4K and beyond. Given the power draw, a quality 850 W PSU is recommended; users with lower-wattage units should upgrade to avoid instability. The 16-pin connector is rated for high current, so ensure it is fully seated.