XFX Mercury Radeon RX 9070 XT OC Gaming Edition VS XFX Quicksilver Radeon RX 9070 OC Gaming Edition

The most telling gap between these two cards lies in their compute muscle. The Mercury RX 9070 XT delivers 50.79 TFLOPS of floating-point performance against the Quicksilver RX 9070's 38.71 TFLOPS — a roughly 31% advantage that directly translates to faster shader calculations, smoother frame generation, and more headroom for demanding workloads like ray tracing or AI-accelerated features. That gap is reinforced by a proportionally larger shader array: 4096 shading units and 256 TMUs on the XT versus 3584 units and 224 TMUs on the non-XT, meaning the Mercury can process more geometry and texture data simultaneously per clock cycle.

Clock speeds amplify this hardware advantage further. The Mercury's 3100 MHz boost clock versus the Quicksilver's 2700 MHz is a substantial 400 MHz delta at peak — unusually wide for two cards in the same product family. In practice, a higher boost clock means the GPU reaches and sustains its performance ceiling more aggressively under load, which benefits frame-time consistency in fast-paced games. One area where the two cards are completely equal is memory speed (2518 MHz) and render output units (128 ROPs), meaning their pixel fill rates at the ROP stage are closer than the shader counts alone suggest, and neither card has a bandwidth bottleneck edge over the other. Both also support Double Precision Floating Point, relevant for compute tasks beyond gaming.

Overall, the Mercury RX 9070 XT holds a clear and meaningful performance advantage across every major compute metric in this group. The ~31% lead in raw throughput and the significantly higher boost clock make it the stronger choice for higher resolutions or more GPU-intensive titles, while the Quicksilver RX 9070 trades that headroom for what is presumably a lower price point — a reasonable trade-off for users whose workloads don't push to the XT's ceiling.

On memory, these two cards are in complete lockstep. Both the Mercury RX 9070 XT and the Quicksilver RX 9070 ship with 16GB of GDDR6 across a 256-bit bus, delivering an identical 640 GB/s of peak bandwidth. That bandwidth figure is substantial — enough to comfortably feed even demanding 4K texture workloads without the memory subsystem becoming a bottleneck, and it means neither card will run into the kind of VRAM pressure that has plagued some competing 16GB offerings at high resolutions with texture-heavy asset packs.

The shared ECC memory support is worth noting for users considering these cards for mixed gaming and compute workloads. Error-Correcting Code memory catches and corrects single-bit data errors on the fly, which is a meaningful reliability feature for tasks like 3D rendering, simulation, or any professional workflow where data integrity matters. It adds no real-world cost to gaming performance, so it's a quiet but useful inclusion on both cards.

This group is an unambiguous tie. Every memory specification — capacity, speed, bus width, bandwidth, and ECC support — is identical across both products. Buyers choosing between the Mercury RX 9070 XT and the Quicksilver RX 9070 will experience exactly the same memory subsystem, and the decision should rest entirely on the performance and other differentiating factors found elsewhere in the spec sheet.

Feature-for-feature, the Mercury RX 9070 XT and the Quicksilver RX 9070 are identical here. Both cards run on DirectX 12 Ultimate, which is the foundational requirement for hardware-accelerated ray tracing, mesh shaders, and variable rate shading in modern titles — so neither card leaves any current or near-future gaming feature on the table from an API standpoint. Ray tracing support is confirmed on both, meaning the architectural capability is present regardless of how the performance scales between the two SKUs.

On the upscaling front, both cards support FSR4 while lacking DLSS and XeSS (XMX). FSR4 is AMD's latest machine-learning-based upscaling solution, a meaningful generational leap over prior FSR versions in image quality and temporal stability. The absence of DLSS is expected given these are AMD cards, and XeSS in its ML-accelerated form is an Intel-specific feature. For the target audience, FSR4 is the relevant technology, and having it on both cards means users get the same upscaling toolset regardless of which they choose. AMD SAM (Smart Access Memory) support on both further ensures that users pairing either card with a compatible AMD platform can unlock the full CPU-to-GPU memory access benefit.

With all four display outputs, RGB lighting, and identical API and feature support across the board, this group is a clean tie. There is no feature-based reason to prefer one card over the other — both offer the same software ecosystem, the same upscaling generation, and the same multi-display capability. The differentiators lie entirely outside this spec group.

Both the Mercury RX 9070 XT and the Quicksilver RX 9070 carry the same port layout: one HDMI 2.1b output and three DisplayPort outputs, totalling four simultaneous display connections — consistent with the four-display limit confirmed in their features specs. HDMI 2.1b is the current high-watermark for the HDMI standard, supporting 4K at high refresh rates and 8K output, making it well-suited for modern gaming monitors and TVs alike without requiring an adapter.

The absence of USB-C is worth flagging for users who rely on that connector for display output to ultrawide monitors or VR headsets that use DisplayPort Alt Mode over USB-C. Neither card accommodates that use case directly. However, with three full-size DisplayPort outputs available, multi-monitor setups and daisy-chaining scenarios are well covered on both cards without needing dongles or adapters for most mainstream configurations.

This is another straight tie. The port selection is a mirror image across both products, and no connectivity advantage exists on either side. Users with specific display or peripheral requirements should verify compatibility independently, but in terms of what the specs show here, both cards offer the same connectivity ceiling.

Sharing the same RDNA 4.0 architecture and an identical transistor count of 53,900 million, these two cards are clearly cut from the same silicon family — yet they diverge in ways that matter for system builders. The most striking difference is process node: the Mercury RX 9070 XT is fabbed on 4nm while the Quicksilver RX 9070 uses a 5nm process. A smaller node generally enables higher transistor density and better power efficiency at equivalent clock speeds, which helps explain how the XT can push its significantly higher clocks without the die size ballooning further.

The TDP gap is the most consequential practical difference in this group. At 304W, the Mercury demands substantially more from a system's power delivery than the Quicksilver's 220W — an 84W delta that translates directly to PSU headroom requirements, case airflow planning, and long-term electricity costs. For compact or thermally constrained builds, the Quicksilver's lower draw is a meaningful advantage. The physical size difference reinforces this: the Mercury measures 360 × 155 mm versus the Quicksilver's 355 × 140 mm, a 15mm height reduction that could matter in tighter cases with limited vertical clearance between the GPU and the bottom panel or drive cages.

Both cards share a PCIe 5 interface and a 3-year warranty, keeping them on equal footing for platform compatibility and post-purchase protection. On balance, the Mercury RX 9070 XT's higher TDP and slightly larger footprint are the direct cost of its performance lead — buyers in well-ventilated, full-size builds with capable PSUs will absorb that cost easily, while those prioritizing efficiency or working within tighter spatial constraints will find the Quicksilver RX 9070 the more accommodating option here.