AMD Radeon RX 6550M vs AMD Radeon RX 7650 GRE Comparison

The AMD Radeon RX 6550M and AMD Radeon RX 7650 GRE occupy opposite ends of the Radeon spectrum, despite sharing a manufacturer and a 6 nm TSMC process node. The RX 6550M is a low-power mobile part from the Radeon RX 6000 series, built for thin-and-light laptops, while the RX 7650 GRE is a dual-slot desktop card from the Radeon RX 7000 series aimed at mainstream gaming desktops. The data shows a stark performance disparity, with the RX 7650 GRE delivering roughly double the compute throughput of the RX 6550M, but the comparison is not merely about raw speed; it reveals fundamental architectural and positioning differences that dictate which GPU suits a given workload.

Where Each One Wins

The benchmark results are unambiguous: the AMD Radeon RX 7650 GRE wins the only head-to-head test available, the Geekbench OpenCL benchmark, with a score of 83109 against the RX 6550M’s 42536. That is a deltaPct of -48.8% from the RX 7650 GRE’s perspective, meaning the RX 6550M trails by nearly half. The RX 7650 GRE’s advantage stems from its larger silicon, doubled memory bus, and higher shading unit count, making it the clear choice for compute-heavy applications such as 3D rendering, video encoding, or any OpenCL-accelerated workload.

The AMD Radeon RX 6550M, however, wins in the context of power efficiency and physical footprint. Its TDP is 80 W versus 170 W for the RX 7650 GRE, and it requires no power connectors, fitting into an integrated graphics processor (IGP) slot width. The RX 6550M is designed for portable devices where thermal and power budgets are tight, and its performance, while lower, is still respectable for its class, landing in the 85th percentile of all GPUs. The RX 7650 GRE, in contrast, sits at the 83rd percentile, a slight overall ranking difference that underscores its desktop-oriented design. For users prioritizing battery life, slim chassis compatibility, or silent operation in a laptop, the RX 6550M is the logical pick; for anyone needing maximum throughput from a discrete desktop card, the RX 7650 GRE dominates.

Architecture Differences

The architectural gap between these two GPUs is generational. The RX 6550M uses the Navi 24 chip built on RDNA 2.0 architecture, while the RX 7650 GRE uses Navi 33 based on RDNA 3.0. This translates into a difference in transistor count and die size: the RX 6550M has 5,400 million transistors on a 107 mm² die, yielding a transistor density of 50.5 million per mm². The RX 7650 GRE packs 13,300 million transistors onto a 204 mm² die, achieving a higher density of 65.2 million per mm². The RDNA 3.0 architecture brings a shift in FP16 compute: the RX 7650 GRE delivers 22.08 TFLOPS FP16 at a 1:1 ratio with FP32, whereas the RX 6550M offers 11.63 TFLOPS FP16 at a 2:1 ratio, indicating a distinct processing approach.

Memory subsystems are also fundamentally different. The RX 6550M has 4 GB of GDDR6 on a 64-bit bus, providing 144.0 GB/s of bandwidth. The RX 7650 GRE doubles both capacity and bus width to 8 GB and 128-bit, respectively, achieving exactly double the bandwidth at 288.0 GB/s. The shading hardware scales similarly: the RX 6550M has 1024 shading units, 64 texture mapping units (TMUs), and 32 render output units (ROPs), while the RX 7650 GRE has 2048 shading units, 128 TMUs, and 64 ROPs. Ray tracing cores double from 16 to 32. Clock speeds tell a nuanced story—the RX 6550M has a higher base clock (2000 MHz) and boost clock (2840 MHz) than the RX 7650 GRE (1720 MHz and 2695 MHz, respectively), but the RX 7650 GRE’s sheer core count overwhelms that clock advantage. The RX 7650 GRE also connects via PCIe 4.0 x8, while the RX 6550M uses PCIe 4.0 x4, and the former offers display outputs of 1x HDMI 2.1a and 3x DisplayPort 2.1, whereas the latter is portable-device dependent.

Head-to-Head Benchmarks

The single head-to-head benchmark, Geekbench OpenCL, provides a clear verdict. The AMD Radeon RX 7650 GRE scores 83109, while the AMD Radeon RX 6550M scores 42536. The deltaPct of -48.8% indicates that the RX 6550M performs at roughly half the level of the RX 7650 GRE in this compute test. This aligns with the FP32 throughput figures: the RX 7650 GRE delivers 22.08 TFLOPS FP32, nearly four times the 5.816 TFLOPS of the RX 6550M, though real-world OpenCL scaling is not perfectly linear due to memory bandwidth and driver overhead. The RX 7650 GRE’s pixel rate of 172.5 GPixel/s and texture rate of 345.0 GTexel/s dwarf the RX 6550M’s 90.88 GPixel/s and 181.8 GTexel/s, reinforcing that the desktop card is in a different performance class.

There is no other shared benchmark in the data, but the nearest rivals provide context. The RX 6550M’s average benchmark score is 46702, placing it within 1.6% of the NVIDIA RTX 5880 Ada Generation and 1.4% of the NVIDIA RTX A2000, with a negligible 0.2% gap to the Intel Arc A530M and AMD Radeon RX 5600M. The RX 7650 GRE’s average score of 42723 is lower than its OpenCL score suggests, and it sits within 1.3% of the NVIDIA GeForce RTX 4070 SUPER, NVIDIA Quadro M6000 24 GB, NVIDIA GeForce RTX 5050 Mobile, and NVIDIA Quadro M6000, all with deltaPct values around -1.2% to -1.3%. This indicates that while the RX 7650 GRE wins decisively against the RX 6550M, it faces stiff competition from NVIDIA’s midrange offerings, whereas the RX 6550M holds its own against similar low-power parts.

The Verdict

The data points to a straightforward conclusion: the AMD Radeon RX 7650 GRE is the superior performer for any workload that leverages OpenCL or general compute, delivering 95.3% higher score in the head-to-head test than the RX 6550M. Its 8 GB memory capacity and 288.0 GB/s bandwidth make it suitable for modern games and content creation, while the RX 6550M’s 4 GB frame buffer and 144.0 GB/s bandwidth are more limiting. The RX 6550M, however, is not a failed product—it excels in its intended mobile niche, with an 80 W TDP that enables fanless or low-noise designs in ultraportables, and its 85th percentile ranking among all GPUs shows it outperforms many older discrete mobile parts.

Users should pick the RX 7650 GRE if they need raw performance, plan to game at high settings, or work with large datasets that require more than 4 GB of VRAM. The RX 6550M is the choice for those who prioritize mobility, battery efficiency, and thermal constraints over frame rates. The RX 7650 GRE’s 170 W TDP and 450 W suggested PSU are acceptable for desktop builders, while the RX 6550M’s lack of power connectors and IGP form factor are ideal for laptops. There is no middle ground: the RX 7650 GRE is a desktop workhorse, and the RX 6550M is a laptop companion. Neither card is a general-purpose replacement for the other.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 6550M has a higher average benchmark score of 46702, compared to the AMD Radeon RX 7650 GRE’s 42723, despite the latter winning the head-to-head OpenCL test. This is because the average includes different test suites, and the RX 6550M’s 85th percentile ranking versus the RX 7650 GRE’s 83rd percentile reflects this anomaly.

Q: What is the memory bandwidth difference between the two cards?

A: The AMD Radeon RX 7650 GRE offers 288.0 GB/s of bandwidth, exactly double the RX 6550M’s 144.0 GB/s, due to its 128-bit bus versus the RX 6550M’s 64-bit bus. Both use GDDR6 memory, but the RX 7650 GRE has 8 GB capacity compared to 4 GB.

Q: How do the ray tracing cores compare?

A: The AMD Radeon RX 7650 GRE has 32 ray tracing cores, while the AMD Radeon RX 6550M has 16. This doubling is consistent with the overall scaling of shading units, TMUs, and ROPs between the two architectures.

Q: Are the clock speeds higher on the RX 6550M?

A: Yes, the RX 6550M has a base clock of 2000 MHz and a boost clock of 2840 MHz, both higher than the RX 7650 GRE’s 1720 MHz base and 2695 MHz boost. However, the RX 7650 GRE’s larger core count (2048 vs 1024 shading units) compensates for the lower clocks, resulting in far higher overall throughput.

Q: What is the TDP and power requirement for each card?

A: The AMD Radeon RX 6550M has a TDP of 80 W and requires no power connectors, fitting into an IGP slot. The AMD Radeon RX 7650 GRE has a TDP of 170 W, uses a single 8-pin power connector, and requires a suggested PSU of 450 W.

Q: Which card has better percentile ranking among all GPUs?

A: The AMD Radeon RX 6550M ranks in the 85th percentile of all GPUs, while the AMD Radeon RX 7650 GRE ranks in the 83rd percentile. This is surprising given the RX 7650 GRE’s higher raw performance, but it reflects the breadth of GPUs in the database and the RX 6550M’s strong showing in its specific test set.