AMD Radeon Pro W5700X vs AMD Radeon RX 6650M XT Comparison

Where Each One Wins

The AMD Radeon RX 6650M XT and AMD Radeon Pro W5700X target completely different workloads, and the benchmark data reflects that split clearly. The RX 6650M XT is a mobile-first part built around RDNA 2.0, while the Pro W5700X is a workstation-oriented card designed for Apple MPX systems. In the only shared benchmark recorded in the database, Geekbench OpenCL, the RX 6650M XT wins decisively with a score of 76,904 against 43,810 for the Pro W5700X, a 75.5% advantage.

The RX 6650M XT wins the single head-to-head comparison available. Its OpenCL result places it in the 91st percentile among all GPUs, while the Pro W5700X sits in the 87th percentile. However, the Pro W5700X has additional benchmark coverage in the database: it scores 75,427 in Geekbench Metal and 45,246 in Geekbench Vulkan. The RX 6650M XT has no recorded Metal or Vulkan scores, so the Pro W5700X is the only one of the two with proven performance in those APIs.

For compute-heavy OpenCL workloads, the RX 6650M XT is the clear pick. For Metal-centric applications, which are common in macOS ecosystems, the Pro W5700X is the only option with data. The RX 6650M XT is also more power-efficient on paper, with a 120 W TDP versus 205 W for the Pro W5700X, though that efficiency comes with a much smaller memory subsystem.

Architecture Differences

The two GPUs come from different generations of AMD's RDNA architecture. The RX 6650M XT uses RDNA 2.0 with a Navi 23 chip, while the Pro W5700X uses RDNA 1.0 with a Navi 10 chip. Both are built on TSMC's 7 nm process, but the transistor counts differ: the RX 6650M XT packs 11,060 million transistors on a 237 mm² die, giving a density of 46.7 million transistors per square millimeter. The Pro W5700X has 10,300 million transistors on a larger 251 mm² die, resulting in 41.0 million per square millimeter.

Clock speeds favor the RX 6650M XT substantially. Its base clock is 2068 MHz with a boost of 2416 MHz and a game clock of 2162 MHz. The Pro W5700X runs at a 1243 MHz base and 2040 MHz boost, with no game clock listed. Memory clocks also differ: the RX 6650M XT runs its GDDR6 at 2000 MHz (16 Gbps effective), while the Pro W5700X runs at 1750 MHz (14 Gbps effective).

The memory configuration is where the Pro W5700X fights back. It offers 16 GB of GDDR6 on a 256-bit bus, yielding 448.0 GB/s of bandwidth. The RX 6650M XT has 8 GB on a 128-bit bus, yielding 256.0 GB/s. That is a 192 GB/s gap in favor of the Pro W5700X, which matters for large datasets and high-resolution textures.

Compute resources are closer than the clocks suggest. The RX 6650M XT has 2048 shading units, 128 texture mapping units, 64 ROPs, and 32 ray tracing cores. The Pro W5700X has 2560 shading units, 160 TMUs, and 64 ROPs, but no ray tracing cores. The Pro W5700X therefore has more raw shader and texture hardware, while the RX 6650M XT brings hardware ray tracing support via its 32 RT cores. The Pro W5700X also supports DirectX 12 (12_1), while the RX 6650M XT supports DirectX 12 Ultimate (12_2), which includes the full feature set of the newer API tier.

Pixel and texture rates tell a mixed story. The RX 6650M XT achieves 154.6 GPixel/s and 309.2 GTexel/s. The Pro W5700X manages 130.6 GPixel/s and 326.4 GTexel/s. So the RX 6650M XT wins on pixel fill, while the Pro W5700X wins on texture fill, a direct consequence of its higher TMU count.

Floating-point performance slightly favors the Pro W5700X. It delivers 10.44 TFLOPS FP32 and 20.89 TFLOPS FP16 (2:1). The RX 6650M XT delivers 9.896 TFLOPS FP32 and 19.79 TFLOPS FP16 (2:1). The Pro W5700X is about 5.5% ahead in FP32 compute, despite its much lower clocks, because it has 25% more shading units.

Physical and electrical characteristics diverge sharply. The RX 6650M XT is an IGP-class part with no power connectors and a 120 W TDP, designed for portable devices with display outputs dependent on the host system. The Pro W5700X is a quad-slot card, 305 mm long, with a 550 W suggested PSU, using an Apple MPX bus interface and featuring 1x HDMI 2.0b and 4x Thunderbolt outputs. The RX 6650M XT uses PCIe 4.0 x8, while the Pro W5700X uses Apple MPX.

Head-to-Head Benchmarks

The database contains one direct comparison between these two GPUs: Geekbench OpenCL. The RX 6650M XT scores 76,904, and the Pro W5700X scores 43,810. That is a 75.5% delta in favor of the RX 6650M XT, a massive margin that reflects both the clock advantage and the architectural improvements in RDNA 2.0.

To put that in context, the RX 6650M XT's nearest rivals in the database are the NVIDIA GeForce RTX 5090 D at 77,712 (1% higher), the AMD Radeon RX 6850M XT at 78,940 (2.6% higher), and two NVIDIA Tesla P100 variants at 79,396 and 79,605 (3.1% and 3.4% higher). The RX 6650M XT is essentially trading blows with those much larger cards, sitting just 1% below the RTX 5090 D.

The Pro W5700X, by contrast, has an average benchmark score of 54,828 across all its tests, with nearest rivals including the NVIDIA GeForce RTX 4080 at 54,247 (1.1% higher), the RTX 4080 SUPER at 54,209 (1.1% higher), the AMD Radeon RX 6750 GRE 12 GB at 55,698 (1.6% lower), and the AMD Radeon 8060S at 55,757 (1.7% lower). Its OpenCL score of 43,810 is well below its Metal and Vulkan scores, which suggests the Pro W5700X performs better in Apple's native graphics API than in cross-platform compute.

The RX 6650M XT's OpenCL score is also higher than the Pro W5700X's best recorded result in any API. Even the Pro W5700X's Metal score of 75,427 falls short of the RX 6650M XT's OpenCL result of 76,904, though by a much smaller margin of about 1.9%.

The wins tally is 1 for the RX 6650M XT and 0 for the Pro W5700X in head-to-head tests. But the Pro W5700X has broader benchmark coverage, with three recorded tests versus one for the RX 6650M XT. The data does not include a Metal or Vulkan result for the RX 6650M XT, so those APIs remain unverified for that card.

The Verdict

The choice between these two GPUs hinges on platform and workload, not just raw performance. The RX 6650M XT wins the only direct benchmark comparison by 75.5% in OpenCL and also supports DirectX 12 Ultimate, hardware ray tracing with 32 RT cores, and a much lower 120 W TDP. It is the faster card for general compute and modern gaming APIs, and its 91st percentile ranking among all GPUs confirms its strength.

The Pro W5700X is the pick for Apple MPX systems. It has 16 GB of memory with 448.0 GB/s of bandwidth, which doubles the RX 6650M XT's memory capacity and provides 75% more bandwidth. It also delivers higher FP32 compute at 10.44 TFLOPS versus 9.896 TFLOPS, and it has recorded Metal and Vulkan scores, which the RX 6650M XT lacks. For macOS users running Metal-optimized applications, the Pro W5700X is the verified option.

The Pro W5700X also offers more shading units (2560 versus 2048), more TMUs (160 versus 128), and higher texture fill rate (326.4 GTexel/s versus 309.2 GTexel/s). But it lacks ray tracing cores, uses older RDNA 1.0 architecture, and requires a 550 W PSU in a quad-slot form factor. Its launch MSRP was 999 USD, though pricing should not factor into a performance-based decision.

Pick the RX 6650M XT if you need maximum OpenCL compute in a portable, power-efficient package. Pick the Pro W5700X if you need large memory capacity, high bandwidth, or verified Metal and Vulkan performance in a Mac Pro environment. The RX 6650M XT is the better overall performer in the shared benchmark, but the Pro W5700X serves a different ecosystem with different priorities.

FAQ

Q: Which GPU wins in Geekbench OpenCL?

A: The AMD Radeon RX 6650M XT wins with a score of 76,904 against 43,810 for the AMD Radeon Pro W5700X, a 75.5% advantage.

Q: Does the Pro W5700X have any benchmark wins over the RX 6650M XT?

A: No. In the single head-to-head benchmark recorded, the RX 6650M XT wins. The Pro W5700X does have additional Metal and Vulkan scores, but the RX 6650M XT has no recorded results in those APIs to compare.

Q: How much memory does each GPU have?

A: The RX 6650M XT has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth. The Pro W5700X has 16 GB of GDDR6 on a 256-bit bus with 448.0 GB/s bandwidth.

Q: Which GPU supports hardware ray tracing?

A: The RX 6650M XT has 32 ray tracing cores and supports DirectX 12 Ultimate (12_2). The Pro W5700X has no ray tracing cores and supports DirectX 12 (12_1).

Q: What are the power requirements for each card?

A: The RX 6650M XT has a 120 W TDP, uses no power connectors, and is an IGP-class part. The Pro W5700X has a 205 W TDP, requires a 550 W suggested PSU, and is a quad-slot card.

Q: How do these GPUs compare to their nearest rivals in the database?

A: The RX 6650M XT sits 1% below the NVIDIA GeForce RTX 5090 D, 2.6% below the AMD Radeon RX 6850M XT, and 3.1% to 3.4% below two NVIDIA Tesla P100 variants. The Pro W5700X sits 1.1% below both the NVIDIA GeForce RTX 4080 and RTX 4080 SUPER, and 1.6% to 1.7% above the AMD Radeon RX 6750 GRE 12 GB and AMD Radeon 8060S.