Quick Answer
The Radeon RX 6650 XT and RX 5700 XT are both capable graphics cards, but they are built on different generations of technology. The RX 6650 XT, based on the newer RDNA 2 architecture, generally offers better power efficiency and features like hardware-accelerated ray tracing. The RX 5700 XT, based on the older RDNA architecture, can sometimes compete in raw rasterization performance but typically consumes more power and lacks dedicated ray tracing hardware.
Radeon RX 6650 XT vs Radeon RX 5700 XT: Full Comparison
For those considering an upgrade or building a new system, comparing graphics cards from different generations can be insightful. The Radeon RX 5700 XT was a performance leader in its time, while the RX 6650 XT represents a more modern, refined design. This comparison will break down their specifications, architectural differences, and typical performance characteristics to help clarify where each model stands.
Architecture and Manufacturing Process
The core difference between these two GPUs lies in their underlying architecture and the technology used to build them.
- Radeon RX 6650 XT: This card is built on AMD’s RDNA 2 architecture and is manufactured using a 7nm process. A key advancement is the inclusion of Infinity Cache, which helps boost effective memory bandwidth, and dedicated hardware for ray tracing (Ray Accelerators).
- Radeon RX 5700 XT: This model uses the first-generation RDNA architecture, also on a 7nm process. It lacks the Infinity Cache and dedicated ray tracing cores found in RDNA 2, relying on its compute units for all rendering tasks.
The move to RDNA 2 typically brings improved performance per watt and introduces features that are more common in modern game development.
Gaming Performance
In terms of in-game frame rates, the performance landscape can vary depending on the title, resolution, and game settings.
- 1080p Gaming: At 1080p resolution, the RX 6650 XT generally holds a slight to moderate lead in many contemporary games, especially when newer features are utilized.
- 1440p Gaming: At 1440p, the competition is closer. The RX 5700 XT’s wider memory bus can sometimes give it an edge in memory-intensive scenarios, while the 6650 XT’s Infinity Cache aims to compensate for its narrower bus.
- Ray Tracing: The RX 6650 XT includes Ray Accelerators, making it capable of hardware-accelerated ray tracing, though performance in this area is typically modest. The RX 5700 XT lacks this dedicated hardware, so ray tracing effects are handled by standard compute units, resulting in a more significant performance impact.
Power Consumption and Thermals
Efficiency is a notable point of differentiation between these two generations.
- TDP (Thermal Design Power): The Radeon RX 6650 XT typically has a board power around 180W. The Radeon RX 5700 XT has a higher typical board power, often around 225W.
- Efficiency: Thanks to the RDNA 2 architecture, the RX 6650 XT generally delivers its level of performance while consuming less power than the RX 5700 XT. This can translate to lower heat output and potentially quieter cooler operation, depending on the specific card design from board partners.
Features and Connectivity
Both cards support the core features expected of modern GPUs, but the newer model includes some additional technologies.
- DirectX and API Support: Both support DirectX 12 Ultimate in principle, but the RX 6650 XT has full hardware support for all its features, including DirectX Raytracing (DXR). The RX 5700 XT supports the core DirectX 12 feature level.
- Display Outputs: Both typically offer a selection of DisplayPort and HDMI outputs. The specific versions (e.g., HDMI 2.1) may vary by manufacturer, but the RX 6650 XT more commonly supports newer standards.
- Smart Access Memory / Resizable BAR: This feature, which can improve performance by allowing the CPU full access to the GPU memory, is supported by both cards when paired with compatible hardware, though it was introduced around the time of the RX 6000 series.
Specification Comparison Table
| Feature | Radeon RX 6650 XT | Radeon RX 5700 XT |
|---|---|---|
| GPU Architecture | RDNA 2 (Navi 23) | RDNA (Navi 10) |
| Manufacturing Process | 7nm | 7nm |
| Stream Processors | 2048 | 2560 |
| Game Clock (Approx.) | ~2410 MHz | ~1755 MHz |
| VRAM | 8GB GDDR6 | 8GB GDDR6 |
| Memory Bus Width | 128-bit | 256-bit |
| Infinity Cache | 32MB | N/A |
| Ray Tracing Cores | 32 Ray Accelerators | N/A |
| Typical Board Power | ~180W | ~225W |
| PCIe Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| Key Feature Support | DirectX 12 Ultimate, Hardware Ray Tracing | DirectX 12 |
Frequently Asked Questions
What is the main architectural advantage of the RX 6650 XT over the RX 5700 XT?
The primary advantage is the move to the RDNA 2 architecture, which introduces Infinity Cache for higher effective memory bandwidth and dedicated Ray Accelerators for hardware-accelerated ray tracing, alongside generally improved performance per watt.
Does the RX 5700 XT’s wider 256-bit memory bus make it faster than the RX 6650 XT?
Not necessarily. While the wider bus provides higher theoretical bandwidth, the RX 6650 XT’s Infinity Cache is designed to reduce the need to access the slower GDDR6 memory, often compensating for or exceeding the effective bandwidth in many gaming scenarios, especially at 1080p.
Can the Radeon RX 5700 XT handle ray tracing?
Technically, yes, as ray tracing can be performed on its standard compute units. However, without dedicated hardware like Ray Accelerators, the performance impact is typically much more significant compared to an RDNA 2 GPU like the RX 6650 XT, making it less practical for gameplay with ray tracing enabled.
Which card is generally more power-efficient?
The Radeon RX 6650 XT is typically more power-efficient. It delivers comparable or better performance than the RX 5700 XT while consuming less power, as reflected in its lower typical board power specification.
Final Thoughts
The comparison between the Radeon RX 6650 XT and the RX 5700 XT highlights the evolution of GPU technology. The newer RX 6650 XT brings architectural improvements that yield better efficiency, support for modern rendering features like ray tracing, and typically strong 1080p performance. The older RX 5700 XT remains a competent card, particularly at 1440p, leveraging its wider memory bus, but it does so at a higher power cost and without dedicated hardware for newer graphical effects. The choice between them often depends on the importance placed on power efficiency, feature support, and the specific performance profile in the games and resolutions one targets.