Intel HD Graphics 530 vs NVIDIA GeForce GT 745M Comparison

Head-to-Head Benchmarks

The benchmark data presents a split decision between these two mobile graphics solutions. The NVIDIA GeForce GT 745M wins two of the three recorded tests, but the Intel HD Graphics 530 secures a decisive victory in one workload that shifts the overall narrative.

The largest margin belongs to the NVIDIA part in the Vulkan test. The GT 745M scores 5502 against Intel's 1422, a delta of 286.9% in NVIDIA's favor. This is not a marginal advantage; it is a dominant result that shows the discrete GPU's architecture is far better suited to the Vulkan API's low-level access patterns. In practical terms, any application leveraging Vulkan will favor this NVIDIA solution overwhelmingly.

The OpenCL test is the closest contest in the entire comparison. The GT 745M records 3580, while the HD Graphics 530 trails by just 0.8% with a score of 3550. This is effectively a statistical tie, with the NVIDIA part holding a razor-thin edge. The data suggests that for general-purpose compute workloads exposed through OpenCL, users would see nearly identical performance from either solution.

Intel's sole victory comes in the Metal benchmark, where the HD Graphics 530 scores 5025 against NVIDIA's 2777. This represents a 44.7% lead for Intel. The delta here is substantial, and it flips the expected hierarchy. Metal is Apple's graphics API, and the Intel part's strong showing suggests that in environments where Metal is the primary interface, the integrated solution is the better choice.

Looking at the average benchmark scores, the GT 745M holds the overall lead with 3953 points against Intel's 3332. That difference places NVIDIA roughly 18.6% ahead on average. However, the percentile rankings tell a more nuanced story: the GT 745M sits at the 23rd percentile of all GPUs, while the HD Graphics 530 sits at the 20th percentile. Both are low-end parts by modern standards, but the NVIDIA chip is clearly the stronger performer in aggregate.

The nearest rivals for the GT 745M reinforce its positioning. The AMD Radeon R5 M420 scores 3956 (a 0.1% difference), the NVIDIA GeForce 830M scores 3957 (also 0.1% off), and the NVIDIA Quadro K2000 scores 3964 (0.3% higher). The GT 745M is essentially performance-equivalent to these parts, all clustered within a 1% band. For the HD Graphics 530, the NVIDIA GeForce GT 730M scores 3316 (0.5% higher), the NVIDIA GeForce 920M scores 3287 (1.4% lower), and the Intel HD Graphics P4600 scores 3389 (1.7% higher). The Intel part is similarly clustered with its immediate competition, though its rivals are all lower-tier discrete parts.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. The NVIDIA GeForce GT 745M uses the GK107 chip built on the Kepler architecture, manufactured by TSMC on a 28 nm process. It packs 1,270 million transistors into a die size of 118 mm², yielding a transistor density of 10.8 million transistors per square millimeter. The Intel HD Graphics 530 uses the Skylake GT2 chip on Intel's Generation 9.0 architecture, built on a 14 nm+ process. Intel does not report transistor counts for this chip, but the die size is 123 mm², which is slightly larger than the NVIDIA die despite the more advanced process node.

The compute configurations differ significantly. The GT 745M has 384 shading units, 32 texture mapping units, and 16 raster output pipelines. The HD Graphics 530 has 192 shading units, 24 TMUs, and only 3 ROPs. The shading unit count is exactly double in NVIDIA's favor, yet the texture rate tells a different story: Intel achieves 22.80 GTexel/s against NVIDIA's 17.57 GTexel/s. This is because the Intel part boosts to 950 MHz, while the NVIDIA memory clock is 1000 MHz but its core clock is not specified in the database. The pixel rate favors NVIDIA at 4.392 GPixel/s versus Intel's 2.850 GPixel/s, a consequence of the 16 ROPs versus 3 ROPs disparity.

Raw compute throughput slightly favors NVIDIA. The GT 745M delivers 421.6 GFLOPS of FP32 performance, while the HD Graphics 530 delivers 364.8 GFLOPS. However, Intel's part supports FP16 at 729.6 GFLOPS with a 2:1 ratio, a feature the NVIDIA chip does not list. This makes the Intel part potentially more capable in workloads that can utilize reduced precision.

Memory architecture is a major divider. The GT 745M has 2 GB of dedicated GDDR5 memory on a 128-bit bus, delivering 64.00 GB/s of bandwidth. The HD Graphics 530 uses system shared memory with a system-dependent bandwidth, meaning its performance scales with the host system's RAM configuration. For memory-intensive tasks, the dedicated GDDR5 of the NVIDIA part provides a consistent and predictable bandwidth advantage.

The API support also differs. Both support DirectX 12, but Intel's version is 12_1 while NVIDIA's is 11_0. Intel also lists Vulkan 1.3 support versus NVIDIA's 1.2.175. Both support OpenGL 4.6. The bus interface differs as well: the GT 745M uses PCIe 3.0 x16, while the HD Graphics 530 uses a Ring Bus, reflecting its integration into the CPU package.

Power consumption heavily favors Intel. The GT 745M has a TDP of 45 W, while the HD Graphics 530 draws only 15 W. This is a 3x difference in power draw, which has significant implications for battery life and thermal management in portable devices.

Where Each One Wins

The NVIDIA GeForce GT 745M wins in scenarios that stress raw graphics throughput and dedicated memory bandwidth. The Vulkan benchmark result of 5502 versus 1422 demonstrates a 286.9% advantage, making the NVIDIA part the clear choice for Vulkan-based gaming or compute applications. The higher ROP count of 16 versus 3 also suggests better performance in fill-rate-limited scenarios, which aligns with its 54% higher pixel rate.

The GT 745M also edges out the Intel part in OpenCL, though by a slim 0.8% margin. This makes it the safer pick for general compute workloads where the API is OpenCL, even if the practical difference is negligible.

The Intel HD Graphics 530 wins decisively in Metal workloads. Its score of 5025 against 2777 represents a 44.7% lead, making it the better option for any application that uses Metal as its primary rendering or compute API. This is particularly relevant in macOS environments, where Metal is the native graphics interface.

Intel also wins on power efficiency. At 15 W versus 45 W, the HD Graphics 530 consumes one-third of the power of the GT 745M. For thin-and-light laptops or any device where battery life is paramount, this is a significant advantage. The Intel part also supports FP16 compute at 729.6 GFLOPS, which could benefit machine learning inference or media processing workloads that use reduced precision.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA GeForce GT 745M leads with an average score of 3953, while the Intel HD Graphics 530 averages 3332. The NVIDIA part is approximately 18.6% higher on average.

Q: How large is the Vulkan performance gap?

A: The GT 745M scores 5502 in the Vulkan test, which is 286.9% higher than the HD Graphics 530's 1422. This is the largest single-test margin in the comparison.

Q: Does the Intel HD Graphics 530 win any benchmarks?

A: Yes, the HD Graphics 530 wins the Metal benchmark with a score of 5025, which is 44.7% higher than the GT 745M's 2777.

Q: What is the power consumption difference?

A: The GT 745M has a TDP of 45 W, while the HD Graphics 530 has a TDP of 15 W. The Intel part consumes one-third of the power of the NVIDIA part.

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

A: The GT 745M is within 0.3% of the AMD Radeon R5 M420, NVIDIA GeForce 830M, and NVIDIA Quadro K2000. The HD Graphics 530 is within 1.7% of the NVIDIA GeForce GT 730M, NVIDIA GeForce 920M, and Intel HD Graphics P4600.

Q: Which GPU has more shading units?

A: The NVIDIA GeForce GT 745M has 384 shading units, exactly double the 192 shading units of the Intel HD Graphics 530.

The Verdict

The data supports a clear split based on use case. For Vulkan-based workloads, the NVIDIA GeForce GT 745M is the undisputed choice. Its 286.9% lead in that benchmark is the single most decisive result in the entire comparison. The dedicated 2 GB GDDR5 memory with 64.00 GB/s bandwidth also provides a consistent advantage for memory-bound tasks that the Intel part cannot match with its system shared memory.

For Metal-based environments, particularly macOS systems, the Intel HD Graphics 530 is the better option. Its 44.7% lead in the Metal benchmark is substantial, and its 15 W TDP makes it far more suitable for power-constrained devices. The FP16 support at 729.6 GFLOPS also gives it an edge in workloads that can leverage reduced precision.

The OpenCL result is effectively a tie at 0.8% difference, so it should not be a deciding factor. The average benchmark score favors NVIDIA at 3953 versus 3332, but both parts sit in the bottom quartile of all GPUs (23rd and 20th percentiles respectively), indicating neither is a high-performance solution.

Users who prioritize raw graphics performance in Vulkan or OpenCL applications should select the GT 745M. Users who need Metal performance, longer battery life, or lower thermal output should select the HD Graphics 530. The power difference is stark: 45 W versus 15 W, which can be the deciding factor in portable devices.

Specification Differences

| Specification | NVIDIA GeForce GT 745M | Intel HD Graphics 530 |

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

| Chip | GK107 | Skylake GT2 |

| Architecture | Kepler | Generation 9.0 |

| Generation | GeForce 700M | HD Graphics (Skylake) |

| Process Node | 28 nm | 14 nm+ |

| Foundry | TSMC | Intel |

| Transistors | 1,270 million | Not reported |

| Die Size | 118 mm² | 123 mm² |

| Transistor Density | 10.8M / mm² | Not reported |

| Base Clock | Not reported | 350 MHz |

| Boost Clock | Not reported | 950 MHz |

| Memory Clock | 1000 MHz (4 Gbps effective) | System Shared |

| Memory Size | 2 GB | System Shared |

| Memory Type | GDDR5 | System Shared |

| Memory Bus Width | 128 bit | System Shared |

| Memory Bandwidth | 64.00 GB/s | System Dependent |

| Shading Units | 384 | 192 |

| TMUs | 32 | 24 |

| ROPs | 16 | 3 |

| Pixel Rate | 4.392 GPixel/s | 2.850 GPixel/s |

| Texture Rate | 17.57 GTexel/s | 22.80 GTexel/s |

| FP32 Performance | 421.6 GFLOPS | 364.8 GFLOPS |

| FP16 Performance | Not reported | 729.6 GFLOPS (2:1) |

| TDP | 45 W | 15 W |

| Bus Interface | PCIe 3.0 x16 | Ring Bus |

| Display Outputs | Portable Device Dependent | Motherboard Dependent |

| DirectX Support | 12 (11_0) | 12 (12_1) |

| OpenGL Support | 4.6 | 4.6 |

| Vulkan Support | 1.2.175 | 1.3 |

| Release Date | 2013-03-31 | 2015-08-31 |

| Production Status | End-of-life | End-of-life |