AMD Radeon HD 7730M vs AMD Radeon R5 M435 Comparison

Head-to-Head Benchmarks

The recorded data contains one decisive benchmark comparison between these two mobile graphics processors. In the Geekbench OpenCL test, the AMD Radeon HD 7730M scores 6581 points, while the AMD Radeon R5 M435 scores 5859 points. That represents a 12.3% advantage for the HD 7730M, a substantial margin in the context of low-power mobile GPUs. The HD 7730M wins the only head-to-head benchmark recorded in the database.

This 12.3% gap is meaningful when placed alongside the nearest rivals of each card. The HD 7730M sits within a tight cluster of competitors. It trails the AMD Radeon R7 M460 by a marginal 0.5%, with that rival scoring 6612. It edges ahead of the Intel UHD Graphics P750 by 0.4%, which scores 6554. The HD 7730M also leads the NVIDIA GeForce GTX 670M by 1% (that card scores 6513) and the NVIDIA GeForce GT 555M by 1.4% (6493). These deltas are small, so the HD 7730M is essentially trading blows with a broad set of contemporary mobile parts, but the 12.3% lead over the R5 M435 is the largest differential in its immediate comparison set.

The R5 M435, by contrast, sits in a lower performance tier. Its nearest rivals include the AMD Radeon R7 M465, which scores 5841 and trails the R5 M435 by 0.3%. The Intel UHD Graphics 730 scores 5929, putting it 1.2% ahead of the R5 M435. The AMD Radeon HD 8730M scores 5955, 1.6% ahead, and the NVIDIA Quadro K620M scores 5957, also 1.6% ahead. The R5 M435 is therefore the slowest or second-slowest in its own peer group, depending on the comparison. Its percentile ranking reflects this: the R5 M435 sits at the 33rd percentile among all GPUs in the database, while the HD 7730M sits at the 38th percentile. That five-point percentile gap is consistent with the measured 12.3% performance difference.

The benchmark data also shows a clear relationship between raw compute throughput and the OpenCL score. The HD 7730M delivers 691.2 GFLOPS of FP32 performance, whereas the R5 M435 delivers 659.2 GFLOPS. The HD 7730M is roughly 4.9% ahead in theoretical FP32 throughput, yet it is 12.3% ahead in the actual OpenCL benchmark. This suggests that the HD 7730M's advantage is not purely a matter of raw arithmetic throughput; other architectural factors, such as memory bandwidth and the number of execution resources, are contributing to the larger measured gap.

The Verdict

For any workload that relies on OpenCL compute acceleration, the data points clearly to the AMD Radeon HD 7730M as the stronger part. It wins the only head-to-head benchmark by 12.3%, holds a higher percentile rank among all GPUs (38th versus 33rd), and posts an average benchmark score of 6581 against 5859 for the R5 M435. The HD 7730M also has a higher FP32 throughput at 691.2 GFLOPS, more shading units (512 versus 320), more texture mapping units (32 versus 20), and more render output units (16 versus 8). It is, on nearly every measured axis, the more capable processor.

The R5 M435 does have one notable advantage in clock speed. Its base clock is 780 MHz and its boost clock is 1030 MHz, compared to 575 MHz base and 675 MHz boost for the HD 7730M. That is a substantial clock advantage, roughly 35.7% higher base and 52.6% higher boost. Yet the R5 M435 still loses the benchmark decisively. This indicates that the HD 7730M's wider execution resources and larger memory bus more than compensate for its lower clocks. The HD 7730M has a 128-bit memory bus versus 64-bit for the R5 M435, which is a fundamental bandwidth advantage despite the R5 M435 using faster GDDR5 memory.

The R5 M435 also lacks a recorded TDP in the database, while the HD 7730M is rated at 25 W. The R5 M435 is listed as an IGP with no power connector requirements, and it uses PCIe 3.0 x8, whereas the HD 7730M uses PCIe 2.0 x16. For a user choosing between these two, the HD 7730M is the logical pick for compute performance. The R5 M435 only makes sense in a system where the newer platform integration, PCIe 3.0, or the smaller die size (56 mm² versus 123 mm²) matters more than raw performance.

Architecture Differences

Both GPUs are built on the same GCN 1.0 architecture and the same 28 nm TSMC process. They share the same DirectX support (12 with feature level 11_1), OpenGL 4.6, and Vulkan 1.2.170. Both are end-of-life products, and both use portable-device-dependent display outputs.

The underlying chips differ substantially. The HD 7730M uses the Chelsea chip, which contains 1,500 million transistors on a 123 mm² die, giving a transistor density of 12.2 million transistors per square millimeter. The R5 M435 uses the Jet chip, with 690 million transistors on a 56 mm² die, giving a density of 12.3 million per square millimeter. The transistor density is nearly identical, which makes sense given the same process node, but the Chelsea die is more than twice the physical size and carries more than double the transistor count.

The execution resources diverge sharply. The HD 7730M has 512 shading units, 32 TMUs, and 16 ROPs. The R5 M435 has 320 shading units, 20 TMUs, and 8 ROPs. That is 60% more shading units, 60% more TMUs, and twice the ROPs for the HD 7730M. The pixel rate reflects this: 10.80 GPixel/s for the HD 7730M versus 8.240 GPixel/s for the R5 M435. The texture rate is closer: 21.60 GTexel/s versus 20.60 GTexel/s, a gap of only 4.9%, which mirrors the FP32 difference.

Memory architecture is a major differentiator. The HD 7730M uses 2 GB of DDR3 on a 128-bit bus, with memory clocked at 900 MHz (1800 Mbps effective) and bandwidth of 28.80 GB/s. The R5 M435 uses 2 GB of GDDR5 on a 64-bit bus, with memory clocked at 1125 MHz (4.5 Gbps effective) and bandwidth of 36.00 GB/s. The R5 M435 has 25% more bandwidth despite the narrower bus, because GDDR5 operates at a much higher effective data rate. However, the HD 7730M's wider bus may offer better latency characteristics and more efficient access patterns in certain workloads.

The generations are distinct. The HD 7730M belongs to the London generation (HD 7700M series), released on 2012-04-23. The R5 M435 belongs to the Gem System generation (R5 M400 series), released on 2016-05-14. The HD 7730M's predecessor is listed as Vancouver and its successor as Solar System. The R5 M435's predecessor is Solar System and its successor is Polaris Mobile. This places the R5 M435 as a direct descendant of the HD 7730M lineage, with the Solar System generation in between.

FAQ

Q: Which GPU is faster in the Geekbench OpenCL test?

A: The AMD Radeon HD 7730M scores 6581, while the AMD Radeon R5 M435 scores 5859. The HD 7730M wins by 12.3%.

Q: How do these cards compare to their nearest rivals?

A: The HD 7730M is within 1.4% of four rivals, ranging from 0.4% ahead of the Intel UHD Graphics P750 to 1.4% ahead of the NVIDIA GeForce GT 555M, and 0.5% behind the AMD Radeon R7 M460. The R5 M435 is 0.3% ahead of the AMD Radeon R7 M465 but 1.2% to 1.6% behind the Intel UHD Graphics 730, AMD Radeon HD 8730M, and NVIDIA Quadro K620M.

Q: Does the R5 M435's higher clock speed make it faster?

A: No. The R5 M435 has a base clock of 780 MHz and boost of 1030 MHz, versus 575 MHz and 675 MHz for the HD 7730M. Despite the higher clocks, it loses the benchmark by 12.3%.

Q: Which GPU has more memory bandwidth?

A: The R5 M435 has 36.00 GB/s of bandwidth using GDDR5 on a 64-bit bus. The HD 7730M has 28.80 GB/s using DDR3 on a 128-bit bus. The R5 M435 has 25% more bandwidth.

Q: What are the FP32 compute capabilities?

A: The HD 7730M delivers 691.2 GFLOPS, while the R5 M435 delivers 659.2 GFLOPS. The HD 7730M is about 4.9% ahead in theoretical FP32 throughput.

Q: Are these GPUs similar in architecture?

A: Both use GCN 1.0 architecture on a 28 nm TSMC process, with DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170 support. However, the HD 7730M uses the Chelsea chip with 1,500 million transistors, while the R5 M435 uses the Jet chip with 690 million transistors.

Where Each One Wins

The AMD Radeon HD 7730M wins in raw compute performance. It leads the OpenCL benchmark by 12.3%, has 60% more shading units, twice the ROPs, a wider 128-bit memory bus, and higher FP32 throughput at 691.2 GFLOPS. Its pixel rate of 10.80 GPixel/s is 31% higher than the R5 M435's 8.240 GPixel/s. For any application that stresses shader throughput, pixel fill, or general compute, the HD 7730M is the clear choice. Its 16 ROPs versus 8 ROPs also suggests better performance in fill-rate-limited scenarios.

The AMD Radeon R5 M435 wins in memory bandwidth, delivering 36.00 GB/s versus 28.80 GB/s, a 25% advantage. It also operates at significantly higher clocks, with a 1030 MHz boost versus 675 MHz. The R5 M435 uses PCIe 3.0 x8, which is a newer bus interface than the HD 7730M's PCIe 2.0 x16. Its smaller die (56 mm² versus 123 mm²) and lower transistor count (690 million versus 1,500 million) could imply lower power draw, though the database does not record a TDP for the R5 M435. The R5 M435 also has a slightly higher transistor density at 12.3 million per square millimeter versus 12.2 million.

For users who prioritize memory throughput, the R5 M435 has an edge. For users who prioritize compute throughput, pixel fill, or texture processing, the HD 7730M is the stronger part. The HD 7730M also holds a higher percentile rank among all GPUs (38th versus 33rd), indicating it is the better overall performer in the database's historical record.

Specification Differences

| Specification | AMD Radeon HD 7730M | AMD Radeon R5 M435 |

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

| Chip | Chelsea | Jet |

| Generation | London (HD 7700M) | Gem System (R5 M400) |

| Transistors | 1,500 million | 690 million |

| Die Size | 123 mm² | 56 mm² |

| Transistor Density | 12.2M / mm² | 12.3M / mm² |

| Base Clock | 575 MHz | 780 MHz |

| Boost Clock | 675 MHz | 1030 MHz |

| Memory Clock | 900 MHz (1800 Mbps effective) | 1125 MHz (4.5 Gbps effective) |

| Memory Type | DDR3 | GDDR5 |

| Memory Bus Width | 128 bit | 64 bit |

| Memory Bandwidth | 28.80 GB/s | 36.00 GB/s |

| Shading Units | 512 | 320 |

| TMUs | 32 | 20 |

| ROPs | 16 | 8 |

| Pixel Rate | 10.80 GPixel/s | 8.240 GPixel/s |

| Texture Rate | 21.60 GTexel/s | 20.60 GTexel/s |

| FP32 | 691.2 GFLOPS | 659.2 GFLOPS |

| TDP | 25 W | Not recorded |

| Slot Width | Not recorded | IGP |

| Bus Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |

| Release Date | 2012-04-23 | 2016-05-14 |

| Predecessor | Vancouver | Solar System |

| Successor | Solar System | Polaris Mobile |

| Geekbench OpenCL Score | 6581 | 5859 |

| Percentile vs All GPUs | 38 | 33 |

The two GPUs share the same manufacturer (AMD), architecture (GCN 1.0), process node (28 nm), foundry (TSMC), memory size (2 GB), API support, and production status (end-of-life). Both have portable-device-dependent display outputs. Neither has a recorded launch MSRP in the database. The HD 7730M uses a PCIe 2.0 x16 interface, while the R5 M435 uses PCIe 3.0 x8, and the HD 7730M carries a 25 W TDP rating while the R5 M435's TDP is not recorded.