AMD Radeon R7 M445 vs AMD Radeon RX 6400 Comparison

Head-to-Head Benchmarks

The only direct comparison recorded in the database for these two parts is the Geekbench OpenCL test, and the result is heavily one-sided. The AMD Radeon RX 6400 scores 32,011 points, while the AMD Radeon R7 M445 manages 5,358 points. That represents a 497.4% advantage for the RX 6400, meaning the newer card delivers roughly six times the raw compute throughput in this workload. This is not a marginal generational step; it is a categorical gap that places the two products in entirely different performance tiers.

Context from the database's nearest rival lists reinforces the scale of the difference. The RX 6400 sits at the 35th percentile among all GPUs, with an average benchmark score of 6,001. Its closest competitors include the NVIDIA GeForce GTX 770M at 6,000 points (a 0% delta), the NVIDIA RTX PRO 6000 Blackwell Server at 5,996 points (a 0.1% delta), and the AMD FirePro W4100 at 5,987 points (a 0.2% delta). These are all essentially neck-and-neck results, which suggests the RX 6400's average score is tightly clustered with a group of mid-range mobile and workstation parts from previous generations.

The R7 M445, by contrast, occupies the 31st percentile with an average benchmark score of 5,358. Its nearest rivals are the Intel UHD Graphics P630 at 5,370 points (a -0.2% delta, meaning the Intel part scores slightly higher), the NVIDIA GeForce 840M at 5,322 points (a 0.7% delta), the NVIDIA GeForce 930A at 5,317 points (a 0.8% delta), and the NVIDIA GeForce GTX 980M at 5,308 points (a 0.9% delta). The R7 M445 is therefore grouped with entry-level and integrated graphics solutions, and it barely edges out those rivals in the database's aggregate metric.

Looking strictly at the head-to-head table, the RX 6400 wins 1 test and the R7 M445 wins 0 tests. The delta of 497.4% in the single shared benchmark is the headline number. It is notably the database records no other overlapping tests between the two cards, so the comparison rests entirely on this OpenCL result. Even so, the magnitude of the difference is consistent with the architectural and specification gaps detailed later in this analysis.

One additional observation from the benchmark data: the RX 6400's individual scores vary widely across different test suites. It scores 7,673 in Passmark G3D, 3,565 TFLOPS of FP32 compute, and 320,011 in Geekbench OpenCL. The R7 M445's only recorded benchmark is the Geekbench OpenCL result of 5,358. This means the RX 6400 outperforms the R7 M445 by a factor of roughly 5.97 in the one test where both have data, a ratio that aligns with the 497.4% delta.

Where Each One Wins

The RX 6400 wins in every category where data exists. The only head-to-head test, Geekbench OpenCL, goes to the RX 6400 by a 497.4% margin. In the broader database, the RX 6400 also demonstrates strengths in DirectX 12 Ultimate support, hardware ray tracing, and higher pixel and texture throughput, all of which stem from its newer architecture. Its Passmark DirectX 9 score of 93 and DirectX 11 score of 70 indicate solid legacy API performance, while its DirectX 12 score of 30 reflects the more demanding nature of that API's workloads. The R7 M445 has no recorded results in any of these Passmark subtests, so no direct comparison is possible there.

For use cases, the RX 6400 is positioned for modern gaming and compute tasks. Its 12 ray tracing cores and DirectX 12 Ultimate API support make it suitable for titles that leverage hardware-accelerated ray tracing and mesh shaders. The 4 GB of GDDR6 memory on a 64-bit bus delivers 128.0 GB/s of bandwidth, which is sufficient for 1080p gaming at moderate settings in the database's context. The R7 M445, with its GCN 3.0 architecture and DirectX 12 (12_0) support, lacks ray tracing and is limited to older feature sets. Its 4 GB of GDDR5 memory on the same 64-bit bus width provides only 32.00 GB/s of bandwidth, a quarter of the RX 6400's throughput.

The R7 M445 is classified as an IGP (integrated graphics processor) with "Portable Device Dependent" display outputs, meaning it is designed for laptops where it shares memory and power with the host system. This makes it suitable for basic desktop productivity, legacy DirectX 9 and 10 titles, and light media playback. The RX 6400, by contrast, is a discrete single-slot card with its own power delivery (no external connectors, but a 250 W suggested PSU), designed for full desktop installations. The database records the RX 6400 as having a 53 W TDP, while the R7 M445's TDP is not recorded, reflecting its mobile and integrated nature.

In terms of compute workloads, the RX 6400's FP32 throughput of 3.565 TFLOPS is dramatically higher than the R7 M445's 588.8 GFLOPS. The RX 6400 also offers FP16 at 7.130 TFLOPS via a 2:1 ratio, while the R7 M445's FP16 is identical to its FP32 at 588.8 GFLOPS (1:1). This makes the RX 6400 a far more capable part for machine learning inference, scientific simulations, and content creation tasks that can leverage mixed-precision arithmetic.

Architecture Differences

The two GPUs come from entirely different eras of AMD's design philosophy. The RX 6400 is built on the RDNA 2.0 architecture, using the Navi 24 chip manufactured on a 6 nm process at TSMC. The R7 M445 uses the older GCN 3.0 architecture with the Meso chip, fabricated on a 28 nm process, also at TSMC. This process node difference is one of the most consequential gaps: 6 nm versus 28 nm represents a massive reduction in transistor size, which directly impacts power efficiency and density.

The RX 6400 packs 5,400 million transistors into a 107 mm² die, yielding a transistor density of 50.5M per mm². The R7 M445 contains 1,550 million transistors on a larger 125 mm² die, resulting in a density of just 12.4M per mm². The RX 6400 therefore fits more than three times the transistors into a smaller physical area, which explains its dramatically higher performance despite a modest 53 W TDP (the R7 M445's TDP is not recorded, but its integrated nature implies a much lower power envelope).

Clock speeds further separate the two. The RX 6400 runs at a base clock of 1923 MHz, a boost clock of 2321 MHz, and a game clock of 2039 MHz. The R7 M445's base clock is 780 MHz, with a boost of 920 MHz. Even at its base clock, the RX 6400 operates at more than double the R7 M445's boost frequency. Memory clocks tell a similar story: the RX 6400's GDDR6 runs at 2000 MHz with 16 Gbps effective speed, while the R7 M445's GDDR5 runs at 1000 MHz with 4 Gbps effective speed.

The compute unit configurations are also starkly different. The RX 6400 has 768 shading units, 48 texture mapping units, 32 render output units, and 12 ray tracing cores. The R7 M445 has 320 shading units, 20 TMUs, and 8 ROPs, with no ray tracing cores at all. This explains the pixel rate difference: 74.27 GPixel/s for the RX 6400 versus 7.360 GPixel/s for the R7 M445, a 10x gap. Texture rate follows suit at 111.4 GTexel/s versus 18.40 GTexel/s, a 6x difference.

Bus interfaces also differ. The RX 6400 uses PCIe 4.0 x4, while the R7 M445 uses PCIe 3.0 x8. Although the R7 M445 has more lanes, the older PCIe 3.0 standard and its lower per-lane bandwidth mean the RX 6400's PCIe 4.0 connection likely provides similar or better effective transfer rates. The RX 6400 also supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the R7 M445 is limited to DirectX 12 (12_0) and Vulkan 1.2.170. Both support OpenGL 4.6.

FAQ

Q: Which GPU has higher raw compute performance?

A: The AMD Radeon RX 6400 records 3.565 TFLOPS of FP32 compute, while the AMD Radeon R7 M445 records 588.8 GFLOPS. In the Geekbench OpenCL test, the RX 6400 scores 32,011 versus 5,358, a 497.4% advantage.

Q: Do both cards support hardware ray tracing?

A: No. The RX 6400 includes 12 ray tracing cores and supports DirectX 12 Ultimate (12_2), which enables hardware-accelerated ray tracing. The R7 M445 has no ray tracing cores and is limited to DirectX 12 (12_0), which does not include ray tracing features.

Q: How do their memory bandwidths compare?

A: The RX 6400 has 4 GB of GDDR6 memory on a 64-bit bus, delivering 128.0 GB/s of bandwidth. The R7 M445 also has 4 GB, but it is GDDR5 on the same 64-bit bus, delivering only 32.00 GB/s. The RX 6400's bandwidth is four times higher.

Q: Are these cards suitable for modern gaming?

A: The RX 6400 is designed for modern gaming with its RDNA 2.0 architecture, DirectX 12 Ultimate support, and 53 W TDP. The R7 M445, as an IGP with GCN 3.0 architecture and no ray tracing, is better suited for older DirectX 9 and 11 titles and basic productivity.

Q: What is the difference in their manufacturing process?

A: The RX 6400 is built on a 6 nm TSMC process with 5,400 million transistors on a 107 mm² die. The R7 M445 uses a 28 nm TSMC process with 1,550 million transistors on a 125 mm² die. The RX 6400 achieves a transistor density of 50.5M per mm² versus 12.4M per mm² for the R7 M445.

Q: Which GPU has a higher percentile ranking in the database?

A: The RX 6400 ranks at the 35th percentile among all GPUs, with an average benchmark score of 6,001. The R7 M445 ranks at the 31st percentile, with an average benchmark score of 5,358.

Specification Differences

| Specification | AMD Radeon RX 6400 | AMD Radeon R7 M445 |

|---|---|---|

| Architecture | RDNA 2.0 | GCN 3.0 |

| Process Node | 6 nm | 28 nm |

| Transistors | 5,400 million | 1,550 million |

| Die Size | 107 mm² | 125 mm² |

| Transistor Density | 50.5M / mm² | 12.4M / mm² |

| Base Clock | 1923 MHz | 780 MHz |

| Boost Clock | 2321 MHz | 920 MHz |

| Memory Type | GDDR6 | GDDR5 |

| Memory Clock | 2000 MHz (16 Gbps effective) | 1000 MHz (4 Gbps effective) |

| Memory Bandwidth | 128.0 GB/s | 32.00 GB/s |

| Shading Units | 768 | 320 |

| TMUs | 48 | 20 |

| ROPs | 32 | 8 |

| Ray Tracing Cores | 12 | None |

| Pixel Rate | 74.27 GPixel/s | 7.360 GPixel/s |

| Texture Rate | 111.4 GTexel/s | 18.40 GTexel/s |

| FP32 Performance | 3.565 TFLOPS | 588.8 GFLOPS |

| FP16 Performance | 7.130 TFLOPS (2:1) | 588.8 GFLOPS (1:1) |

| TDP | 53 W | Not recorded |

| Slot Width | Single-slot | IGP |

| Bus Interface | PCIe 4.0 x4 | PCIe 3.0 x8 |

| Display Outputs | 1x HDMI 2.1, 1x DisplayPort 1.4a | Portable Device Dependent |

| DirectX Support | 12 Ultimate (12_2) | 12 (12_0) |

| Vulkan Support | 1.4 | 1.2.170 |

| Release Date | 2022-01-18 | 2016-05-14 |

| Launch MSRP | 159 USD | Not recorded |

The specification table makes the generational chasm explicit. Every measurable hardware parameter favors the RX 6400 except die size, where the older R7 M445 is actually larger despite containing far fewer transistors. The RX 6400's launch MSRP of 159 USD was recorded at release, while the R7 M445 has no recorded launch MSRP, consistent with its role as an integrated mobile part that was typically bundled with laptops rather than sold separately. The production status for both is listed as end-of-life, but the RX 6400's successor is recorded as Navi III, while the R7 M445's successor is Polaris Mobile.