AMD Radeon RX 6650M vs AMD Radeon RX 6650M XT Comparison

The AMD Radeon RX 6650M XT and the AMD Radeon RX 6650M share the same Navi 23 chip, RDNA 2.0 architecture, and 7 nm TSMC process, but the benchmark data shows the XT variant delivers a decisive performance advantage. In the only direct head-to-head comparison available, the RX 6650M XT scores 76,904 in Geekbench OpenCL, defeating the RX 6650M’s 65,800 by a 16.9% margin. This places the XT model in a higher competitive tier, while the non-XT model sits closer to older desktop flagships. The following analysis breaks down the exact benchmark results, architectural differences, and which use cases favor each GPU.

Head-to-Head Benchmarks

The single available head-to-head benchmark is Geekbench OpenCL, and the RX 6650M XT wins it outright with a score of 76,904 versus 65,800 for the RX 6650M. That is a 16.9% delta, a substantial gap for two GPUs built on the same die and process node. The XT’s advantage comes primarily from a fuller execution configuration: it packs 2,048 shading units, 128 texture mapping units, and 32 ray tracing cores, whereas the RX 6650M is cut down to 1,792 shading units, 112 TMUs, and 28 ray tracing cores. Both share 64 ROPs, so pixel fill rate is identical at 154.6 GPixel/s, but the XT’s extra shaders and TMUs boost its texture rate to 309.2 GTexel/s versus 270.6 GTexel/s on the non-XT.

The compute throughput difference is equally telling. The RX 6650M XT delivers 9.896 TFLOPS of FP32 performance, while the RX 6650M manages 8.659 TFLOPS — a 14.3% raw compute advantage for the XT. FP16 performance follows the same 2:1 ratio pattern: 19.79 TFLOPS on the XT versus 17.32 TFLOPS on the non-XT. Memory bandwidth also favors the XT, with 256.0 GB/s versus 224.0 GB/s, because the XT runs its GDDR6 at 16 Gbps effective while the non-XT runs at 14 Gbps. Both use an 8 GB frame buffer on a 128-bit bus, but the XT’s faster memory helps feed its larger shader array.

Looking at the broader competitive landscape, the RX 6650M XT’s 76,904 OpenCL score sits at the 91st percentile of all GPUs, with its nearest rival being the NVIDIA GeForce RTX 5090 D at 77,712 (just 1% faster) and the AMD Radeon RX 6850M XT at 78,940 (2.6% faster). The RX 6650M’s 65,800 OpenCL score also lands at the 91st percentile, but its nearest rivals are much older or lower-tier parts: the NVIDIA TITAN X Pascal at 72,098 (0.5% faster), the AMD Radeon Pro Vega 64 at 72,379 (0.8% faster), and the AMD Radeon RX 6600 LE at 70,829 (1.3% slower). Notably, the RX 6650M has a second benchmark score — 77,735 in Geekbench Vulkan — which is higher than its OpenCL result and actually exceeds the RX 6650M XT’s OpenCL score, though no Vulkan score exists for the XT in the data.

The Verdict

The RX 6650M XT is the clear winner in raw performance. Its 16.9% lead over the RX 6650M in Geekbench OpenCL is consistent with its 14.3% higher FP32 throughput and 14.3% higher memory bandwidth. If you are choosing purely on benchmark results, the XT model is the superior GPU for compute-heavy workloads, OpenCL-accelerated applications, and any task that benefits from more shader cores and faster memory. The data shows no benchmark where the non-XT wins; the head-to-head tally is 1 win for the XT and 0 for the RX 6650M.

However, the RX 6650M is not a weak performer in absolute terms. Its average benchmark score across OpenCL and Vulkan is 71,768, and its Vulkan score of 77,735 is competitive with the XT’s OpenCL result. For users who rely on Vulkan APIs, the non-XT might close the gap in practice, though the lack of a Vulkan score for the XT makes a direct comparison impossible. The RX 6650M also matches the XT in pixel fill rate (154.6 GPixel/s both), so resolution-bound scenarios that are ROP-limited will see less differentiation.

From a competitive positioning view, the RX 6650M XT rivals modern high-end parts like the RTX 5090 D (within 1%) and the RX 6850M XT (within 2.6%), while the RX 6650M sits alongside the TITAN X Pascal and Pro Vega 64 — capable but older architectures. The XT model belongs in a higher performance class; the non-XT is a more modest mobile option that still ranks in the 91st percentile globally.

Where Each One Wins

The RX 6650M XT wins in every measurable compute benchmark available. Its 16.9% OpenCL lead means it is the better choice for GPU compute tasks such as rendering, machine learning inference, or any workload that leverages OpenCL. The XT’s 9.896 TFLOPS FP32 and 19.79 TFLOPS FP16 give it a clear edge in shader-heavy applications, and its 256.0 GB/s bandwidth reduces memory bottlenecks in texture-heavy scenes. The extra 4 ray tracing cores (32 vs 28) also suggest better ray-traced performance, though no ray tracing benchmark appears in the data.

The RX 6650M wins in one specific niche: Vulkan performance. Its Geekbench Vulkan score of 77,735 is higher than its own OpenCL score and even surpasses the XT’s OpenCL result, though this is an apples-to-oranges comparison since no Vulkan score is listed for the XT. If a user’s primary applications use Vulkan, the RX 6650M might deliver comparable or better real-world results than its OpenCL deficit would suggest. Additionally, both GPUs share identical 64 ROPs and pixel rate, so at very high resolutions where fill rate is the limiting factor, the non-XT will not fall behind.

For gaming specifically, the XT’s higher texture rate (309.2 GTexel/s vs 270.6 GTexel/s) and faster memory (16 Gbps vs 14 Gbps) should provide smoother frame rates at high detail settings, especially at 1080p and 1440p where shader and bandwidth utilization are higher. The RX 6650M is better suited for users who want the same 8 GB frame buffer and RDNA 2.0 feature set at a lower performance tier, potentially better fitting thermal or power constraints in thin laptops — though both are listed at a 120 W TDP.

FAQ

Q: Which GPU has a higher Geekbench OpenCL score?

A: The AMD Radeon RX 6650M XT scores 76,904, which is 16.9% higher than the RX 6650M’s 65,800.

Q: Do both GPUs use the same chip and architecture?

A: Yes, both are based on the Navi 23 chip with RDNA 2.0 architecture, built on a 7 nm TSMC process with 11,060 million transistors and a 237 mm² die size.

Q: What is the memory bandwidth difference?

A: The RX 6650M XT has 256.0 GB/s bandwidth, while the RX 6650M has 224.0 GB/s — a 14.3% advantage for the XT due to faster 16 Gbps effective memory versus 14 Gbps.

Q: Which GPU has more shading units and ray tracing cores?

A: The RX 6650M XT has 2,048 shading units and 32 ray tracing cores, whereas the RX 6650M has 1,792 shading units and 28 ray tracing cores.

Q: Is the RX 6650M’s Vulkan score higher than its OpenCL score?

A: Yes, the RX 6650M scores 77,735 in Geekbench Vulkan, which is higher than its 65,800 OpenCL score. No Vulkan score is available for the RX 6650M XT.

Q: What are the nearest rivals for each GPU?

A: The RX 6650M XT’s nearest rival is the NVIDIA GeForce RTX 5090 D (77,712, 1% faster), while the RX 6650M’s nearest rival is the NVIDIA TITAN X Pascal (72,098, 0.5% faster).

Architecture Differences

Both GPUs are built on the same Navi 23 chip using RDNA 2.0 architecture and a 7 nm TSMC process, so the fundamental design is identical. The transistor count (11,060 million) and die size (237 mm²) are exactly the same, as are the transistor density (46.7M / mm²) and foundry. The key architectural difference lies in the configuration of execution units: the RX 6650M XT enables more of the chip’s resources, with 2,048 shading units versus 1,792, 128 TMUs versus 112, and 32 ray tracing cores versus 28. Both have 64 ROPs, so the back-end rasterization throughput is unchanged.

Clock speeds differ in a nuanced way. Both have identical base (2068 MHz) and boost (2416 MHz) clocks, but the game clock — the typical sustained frequency under load — is higher on the non-XT: 2222 MHz versus 2162 MHz. This means the RX 6650M runs its fewer shaders at a slightly higher frequency, partially compensating for the reduced core count. However, the XT still wins on raw throughput because the 14.3% more shading units outweigh the 2.8% game clock deficit. Memory clocks also differ: the XT runs at 2000 MHz (16 Gbps effective) versus 1750 MHz (14 Gbps effective) on the non-XT, giving the XT a 14.3% bandwidth advantage. The FP32 and FP16 ratios are both 2:1, and both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Specification Differences

The two GPUs differ in several specification fields, all stemming from the XT’s fuller chip enablement. Shading units: 2,048 on the XT versus 1,792. TMUs: 128 versus 112. Ray tracing cores: 32 versus 28. Texture rate: 309.2 GTexel/s versus 270.6 GTexel/s. FP32 performance: 9.896 TFLOPS versus 8.659 TFLOPS. FP16 performance: 19.79 TFLOPS versus 17.32 TFLOPS. Game clock: 2162 MHz on the XT versus 2222 MHz on the non-XT (the non-XT is faster here). Memory clock: 2000 MHz (16 Gbps effective) versus 1750 MHz (14 Gbps effective). Memory bandwidth: 256.0 GB/s versus 224.0 GB/s. Pixel rate, ROP count, memory size (8 GB GDDR6), bus width (128 bit), base clock (2068 MHz), boost clock (2416 MHz), TDP (120 W), slot width (IGP), power connectors (None), bus interface (PCIe 4.0 x8), and display outputs (Portable Device Dependent) are identical. Both have no launch MSRP, are end-of-life, released on 2022-01-03, and succeed Polaris Mobile.