AMD Radeon R7 M340 vs AMD Radeon R7 M440 Comparison

The AMD Radeon R7 M440 is the clear winner over the AMD Radeon R7 M340, taking both head-to-head benchmarks with a decisive lead in Vulkan performance. The data shows a 5.7% advantage in OpenCL and a 10.7% advantage in Vulkan, placing the M440 in the 32nd percentile of all GPUs compared to the M340’s 30th percentile. While both cards share the same silicon foundation, the M440’s higher average benchmark score of 5483 against 5063 for the M340 indicates a meaningful generational uplift within the same GCN 3.0 architecture.

Head-to-Head Benchmarks

The most significant gap between these two mobile GPUs appears in the Geekbench Vulkan test, where the R7 M440 scores 5751 against the R7 M340’s 5193. This 10.7% delta represents the single largest performance difference in the dataset and suggests the M440 is notably better suited for modern API workloads. The M340’s Vulkan score of 5193 is closer to its own OpenCL result of 4932, while the M440 shows a larger internal jump from 5214 in OpenCL to 5751 in Vulkan — a 10.3% improvement within its own results that the M340 does not replicate.

In the Geekbench OpenCL test, the M440 again comes out ahead, scoring 5214 versus 4932 for the M340. The 5.7% delta here is smaller than the Vulkan gap but still consistent. The M340’s OpenCL score of 4932 places it exactly even with the AMD Radeon R7 240 in the nearestRivals data, with a 0% deltaPct, while the M440’s 5214 OpenCL result sits slightly below the NVIDIA Quadro M4000’s 5467 average, trailing by only 0.3%. In contrast, the M340 trails the AMD FirePro W4170M by 0.6%, showing that both cards occupy a similar competitive tier but with the M440 consistently holding the upper hand.

Looking at the rivals list, the M440’s average score of 5483 puts it within 0.5% of the NVIDIA GeForce MX130’s 5508 and just 0.3% below the NVIDIA Quadro M4000’s 5467, though it also edges out the AMD Radeon 610M by 0.7%. The M340’s average of 5063 sits 0.9% above the AMD Radeon R5 M430’s 5018 and 1.3% above the AMD Radeon R7 Graphics’ 4998. This positioning shows the M440 competing with entry-level discrete GPUs from NVIDIA, while the M340 is locked into a lower tier where its closest rival is a desktop card from its own family.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon R7 M440 has an average benchmark score of 5483, which is 8.3% higher than the AMD Radeon R7 M340’s 5063. The M440 also ranks in the 32nd percentile of all GPUs, while the M340 ranks in the 30th.

Q: How much faster is the M440 in Vulkan performance?

A: The M440 scores 5751 in the Geekbench Vulkan test, which is 10.7% higher than the M340’s 5193. This is the largest performance gap between the two cards in any benchmark.

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

A: Yes, both the AMD Radeon R7 M440 and the AMD Radeon R7 M340 are built on the Meso chip with GCN 3.0 architecture, manufactured on a 28 nm process at TSMC, with 1,550 million transistors and a 125 mm² die size.

Q: What is the memory configuration difference?

A: The M440 comes with 4 GB of DDR3 memory on a 64-bit bus, delivering 14.40 GB/s bandwidth at 900 MHz (1800 Mbps effective). The M340 has 2 GB of DDR3 on the same 64-bit bus, but runs at 1000 MHz (2 Gbps effective) for 16.00 GB/s bandwidth.

Q: Which card has higher clock speeds?

A: The M340 has a base clock of 943 MHz and a boost clock of 1021 MHz, while the M440’s base and boost clocks are not listed in the data. The M340’s memory is also clocked higher at 1000 MHz compared to the M440’s 900 MHz.

Q: Are there any benchmark tests where the M340 wins?

A: No. The data shows the M440 wins both head-to-head benchmarks (OpenCL and Vulkan), with 2 wins for the M440 and 0 for the M340.

Architecture Differences

Both GPUs share the exact same silicon foundation: the Meso chip with GCN 3.0 architecture, fabricated by TSMC on a 28 nm process. Each has 1,550 million transistors and a die size of 125 mm², resulting in a transistor density of 12.4 million per square millimeter. The shading unit count is identical at 320, with 20 texture mapping units and 8 raster operation pipelines. Neither card features ray tracing cores or tensor cores, and both support DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170.

The architectural parity extends to the memory subsystem, where both use DDR3 memory on a 64-bit bus. However, the M440 ships with 4 GB of memory while the M340 has 2 GB, and the memory clocks differ: the M340 runs at 1000 MHz (2 Gbps effective) versus the M440’s 900 MHz (1800 Mbps effective). This results in the M340 having higher memory bandwidth at 16.00 GB/s compared to the M440’s 14.40 GB/s, despite the M440 having twice the memory capacity.

The pixel and texture rates reflect the clock differences. The M340 achieves 8.168 GPixel/s and 20.42 GTexel/s, while the M440 manages 7.128 GPixel/s and 17.82 GTexel/s. Similarly, the M340’s FP32 and FP16 compute are both 653.4 GFLOPS, exceeding the M440’s 570.2 GFLOPS in both precision formats. The M340 is the higher-clocked part, but this does not translate into better real-world benchmark results, as the M440 wins both compute tests despite its lower theoretical rates.

Both cards use a PCIe 3.0 x8 bus interface and are marked as end-of-life products. The M440 is listed as an integrated graphics processor (IGP) with portable-device-dependent display outputs, while the M340’s slot width and display outputs are not specified. Both are part of the Gem System generation, with the M440 in the R7 M400 series and the M340 in the R7 M300 series.

Specification Differences

| Specification | AMD Radeon R7 M440 | AMD Radeon R7 M340 |

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

| Generation | Gem System (R7 M400) | Gem System (R7 M300) |

| Base Clock | Not listed | 943 MHz |

| Boost Clock | Not listed | 1021 MHz |

| Memory Clock | 900 MHz / 1800 Mbps effective | 1000 MHz / 2 Gbps effective |

| Memory Size | 4 GB | 2 GB |

| Memory Bandwidth | 14.40 GB/s | 16.00 GB/s |

| Pixel Rate | 7.128 GPixel/s | 8.168 GPixel/s |

| Texture Rate | 17.82 GTexel/s | 20.42 GTexel/s |

| FP32 / FP16 | 570.2 GFLOPS (1:1) | 653.4 GFLOPS (1:1) |

| Slot Width | IGP | Not listed |

| Display Outputs | Portable Device Dependent | Not listed |

| Release Date | 2016-05-14 | 2015-05-04 |

| Average Benchmark Score | 5483 | 5063 |

| Percentile vs All GPUs | 32 | 30 |

The M340 has higher clock speeds across the board, leading to superior theoretical throughput in pixel rate, texture rate, and compute. The M440 counters with double the memory capacity and a newer release date. The only shared specification differences that favor the M440 are memory size and benchmark scores; every other listed difference favors the M340 on paper.

The Verdict

The benchmark data is unambiguous: the AMD Radeon R7 M440 outperforms the AMD Radeon R7 M340 in every measured test. The M440 wins both OpenCL and Vulkan benchmarks, with its strongest margin coming in Vulkan at 10.7%. Its average score of 5483 is 8.3% above the M340’s 5063, and it occupies a higher percentile ranking at 32 versus 30. The M440 also matches or beats its nearest rivals more closely, sitting just 0.3% below the NVIDIA Quadro M4000 and 0.5% below the NVIDIA GeForce MX130, while the M340’s closest rival is the AMD Radeon R7 240 at parity.

However, the M340 is not without its merits. It has higher base and boost clocks, more memory bandwidth, and superior theoretical compute rates. The data shows the M340 achieves 653.4 GFLOPS in both FP32 and FP16, compared to the M440’s 570.2 GFLOPS, and its pixel rate of 8.168 GPixel/s exceeds the M440’s 7.128 GPixel/s. These figures suggest the M340 should be faster in raw throughput, yet benchmark results indicate the opposite — the M440’s architectural or driver optimizations deliver better real-world performance despite lower clocks.

For users choosing between these two, the M440 is the recommended pick based on every benchmark score available. The M340’s higher clock speeds and bandwidth do not translate into wins in the Geekbench tests, making the M440 the superior choice for both OpenCL and Vulkan workloads. The M340’s only advantage is theoretical, and the data does not support it in practice.

Where Each One Wins

The AMD Radeon R7 M440 wins in every benchmark category recorded. It takes the Geekbench OpenCL test with 5214 points and the Geekbench Vulkan test with 5751 points. Its average benchmark score of 5483 places it ahead of the M340 in overall performance, and its 32nd percentile ranking is two points higher. The M440 also offers 4 GB of memory, which is double the M340’s 2 GB, making it more suitable for workloads that require larger memory pools.

The AMD Radeon R7 M340 wins in every specification category where clocks or rates are listed. It has a higher base clock of 943 MHz and boost clock of 1021 MHz, compared to the M440’s unlisted clocks. Its memory runs at 1000 MHz versus 900 MHz, delivering 16.00 GB/s of bandwidth against the M440’s 14.40 GB/s. The M340 also produces higher pixel rates (8.168 vs 7.128 GPixel/s), texture rates (20.42 vs 17.82 GTexel/s), and FP32/FP16 compute (653.4 vs 570.2 GFLOPS). For anyone relying purely on theoretical specifications, the M340 appears more capable, but the benchmark data does not support that conclusion.

The M440 is the better choice for real-world compute performance, as evidenced by its wins in both OpenCL and Vulkan. The M340 might appeal to those who value higher memory bandwidth or who run workloads that scale with clock speed rather than memory capacity, but no benchmark in the data confirms such an advantage. The M440’s 4 GB memory capacity and newer release date from 2016, compared to the M340’s 2015 launch, round out a profile that favors the M440 in nearly every practical scenario.