Intel HD Graphics 530 vs NVIDIA GeForce GT 545 Comparison

The NVIDIA GeForce GT 545 and Intel HD Graphics 530 are two very different approaches to graphics processing: one is a dedicated discrete card from the Fermi 2.0 era, while the other is an integrated processor from Intel’s Generation 9.0 architecture. The data reveals a surprisingly close contest in raw compute, but the underlying specifications tell a story of divergent strengths and weaknesses.

Head-to-Head Benchmarks

The only direct benchmark comparison available is the Geekbench OpenCL test, and the results are remarkably tight. The NVIDIA GeForce GT 545 scores 3594, while the Intel HD Graphics 530 trails slightly with 3550. This gives the NVIDIA card a 1.2% advantage, a margin so slim that it falls well within typical run-to-run variance. For a standalone GPU launched in 2011 to be essentially tied with a 2015 integrated solution speaks volumes about how much efficiency improved over that period.

Contextualizing these scores against their respective nearest rivals sharpens the picture. The GT 545’s 3594 OpenCL score places it just 0.1% behind the NVIDIA RTX 5000 Mobile Ada Generation (3596) — an extraordinary result given the generational gap, though it must be noted that the RTX 5000’s score is an average across multiple tests. The GT 545 also edges out the GeForce GT 735M (3616) by 0.6% and the GTX 1050 (3629) by 1%. This suggests the Fermi card’s compute throughput remains competitive with much newer entry-level parts.

On the Intel side, the HD 530’s OpenCL score of 3550 sits within a similar performance envelope. It is 0.5% ahead of the GeForce GT 730M (3316) and 1.4% ahead of the GeForce 920M (3287), but falls 1.7% short of the Intel HD Graphics P4600 (3389) and 2.9% behind the GeForce GT 740 (3431). The overall percentile rankings reinforce this parity: the GT 545 sits at the 21st percentile of all GPUs, while the HD 530 is at the 20th.

However, the HD 530 has additional benchmark data that the GT 545 lacks. In Geekbench Metal, the Intel part scores 5025, a figure that suggests its driver stack or hardware features are better suited to Apple’s Metal API. In Vulkan, the HD 530 manages 1422. These additional scores contribute to the Intel part’s average benchmark score of 3332, which is dragged down by the Vulkan result. The GT 545’s average is simply its OpenCL score of 3594. When averaging across all available tests, the GT 545 holds a 7.3% lead, but this is skewed by the fact that the NVIDIA card has no Vulkan or Metal results to dilute its score.

Architecture Differences

The architectural chasm between these two is vast. The GT 545 uses NVIDIA’s GF116 chip built on the Fermi 2.0 architecture, manufactured on a 40 nm process at TSMC. It packs 1,170 million transistors into a 238 mm² die, yielding a transistor density of 4.9 million per square millimeter. The HD 530, by contrast, uses Intel’s Skylake GT2 silicon on a 14 nm+ process at Intel’s own foundries. Its die size is 123 mm², though Intel does not disclose transistor count or density for this chip.

The integrated nature of the HD 530 is immediately apparent in its memory subsystem. It uses "System Shared" memory with a "System Dependent" bandwidth, meaning performance scales with the host system’s RAM configuration. The GT 545, as a discrete card, has dedicated 1536 MB of DDR3 memory on a 192-bit bus, delivering a fixed 38.40 GB/s of bandwidth.

Shading unit counts tell a curious story. The HD 530 has 192 shading units, substantially more than the GT 545’s 144. Both have 24 texture mapping units. However, the raster operations pipeline is starkly different: the GT 545 has 16 ROPs while the HD 530 has just 3. This explains why the GT 545 achieves a pixel rate of 4.320 GPixel/s versus the HD 530’s 2.850 GPixel/s — a 51.6% advantage for NVIDIA. Yet the texture rate favors Intel: 22.80 GTexel/s versus 17.28 GTexel/s, a 31.9% win for the HD 530. Floating point performance is closer, with the GT 545 at 414.7 GFLOPS and the HD 530 at 364.8 GFLOPS. Notably, the HD 530 also advertises FP16 performance of 729.6 GFLOPS, a capability the GT 545 lacks entirely.

The feature sets diverge on API support. While both support DirectX 12, the HD 530 is rated for 12_1 while the GT 545 is limited to 11_0. Both support OpenGL 4.6. The HD 530 adds Vulkan 1.3 support, while the GT 545 has no Vulkan support listed. Clock behavior differs fundamentally: the HD 530 has a 350 MHz base clock that boosts to 950 MHz, whereas the GT 545’s base and boost clocks are not specified, only its 800 MHz memory clock (1600 Mbps effective).

FAQ

Q: Which GPU has higher raw compute performance in OpenCL?

A: The NVIDIA GeForce GT 545 scores 3594 in Geekbench OpenCL, which is 1.2% higher than the Intel HD Graphics 530’s 3550. This is a marginal difference that falls within typical performance variance.

Q: Does the Intel HD Graphics 530 support modern graphics APIs that the GT 545 lacks?

A: Yes. The HD 530 supports DirectX 12 (12_1) and Vulkan 1.3, while the GT 545 is limited to DirectX 12 (11_0) with no Vulkan support. Both support OpenGL 4.6.

Q: How do their pixel and texture processing rates compare?

A: The GT 545 has a 51.6% higher pixel rate (4.320 GPixel/s vs. 2.850 GPixel/s), but the HD 530 has a 31.9% higher texture rate (22.80 GTexel/s vs. 17.28 GTexel/s).

Q: What memory configurations do these GPUs use?

A: The GT 545 uses 1536 MB of dedicated DDR3 memory on a 192-bit bus with 38.40 GB/s bandwidth. The HD 530 relies entirely on system shared memory with bandwidth that is dependent on the host system.

Q: Which GPU has better FP32 performance?

A: The GT 545 achieves 414.7 GFLOPS in FP32, compared to the HD 530’s 364.8 GFLOPS. However, the HD 530 additionally offers FP16 performance of 729.6 GFLOPS, which the GT 545 cannot provide.

Q: How does the GT 545 compare to a modern high-end mobile GPU?

A: In OpenCL, the GT 545’s 3594 score is only 0.1% behind the NVIDIA RTX 5000 Mobile Ada Generation’s 3596. This is a statistical tie, though the RTX 5000 has vastly superior features outside this single compute metric.

Specification Differences

| Specification | NVIDIA GeForce GT 545 | Intel HD Graphics 530 |

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

| Architecture | Fermi 2.0 | Generation 9.0 |

| Process Node | 40 nm | 14 nm+ |

| Foundry | TSMC | Intel |

| Die Size | 238 mm² | 123 mm² |

| Transistors | 1,170 million | Not disclosed |

| Base Clock | Not specified | 350 MHz |

| Boost Clock | Not specified | 950 MHz |

| Memory Size | 1536 MB | System Shared |

| Memory Type | DDR3 | System Shared |

| Memory Bus | 192 bit | System Shared |

| Memory Bandwidth | 38.40 GB/s | System Dependent |

| Shading Units | 144 | 192 |

| ROPs | 16 | 3 |

| Pixel Rate | 4.320 GPixel/s | 2.850 GPixel/s |

| Texture Rate | 17.28 GTexel/s | 22.80 GTexel/s |

| FP32 Performance | 414.7 GFLOPS | 364.8 GFLOPS |

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

| TDP | 70 W | 15 W |

| Slot Width | Single-slot | IGP |

| Power Connectors | None | Not applicable |

| Bus Interface | PCIe 2.0 x16 | Ring Bus |

| Display Outputs | 1x DVI, 1x HDMI 1.3a, 1x VGA | Motherboard Dependent |

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

| Vulkan Support | Not specified | 1.3 |

| Release Date | 2011-05-13 | 2015-08-31 |

| Launch MSRP | 149 USD | Not applicable |

The Verdict

The benchmark data shows a fundamental trade-off. The GT 545 wins the only shared benchmark, the OpenCL test, by a 1.2% margin. It also dominates in pixel throughput, FP32 compute, and has dedicated memory with fixed bandwidth. Yet the HD 530 counters with a 31.9% texture rate advantage, superior API support including Vulkan 1.3 and DirectX 12_1, and dramatically lower power consumption at 15 W versus 70 W.

For users who need consistent, predictable graphics performance from a dedicated card with its own memory pool, the GT 545 is the logical choice. Its pixel rate advantage and fixed memory bandwidth make it more suitable for traditional rasterization workloads. However, its end-of-life status and lack of Vulkan support limit its relevance for modern applications.

The HD 530’s strengths lie in efficiency and feature completeness. Its 14 nm+ process delivers comparable compute at a fraction of the power, and its support for modern APIs makes it more future-proof despite its lower percentile ranking. The integration into the CPU via Ring Bus means zero additional cost and no power connectors, though performance becomes hostage to system RAM speed.

Where Each One Wins

The GT 545 wins decisively in scenarios that demand high pixel fill rates and consistent memory bandwidth. Its 4.320 GPixel/s pixel rate, which is 51.6% higher than the HD 530’s, makes it better suited for games or applications that are fill-rate bound. The dedicated 38.40 GB/s of bandwidth also ensures that memory performance does not fluctuate with system load. Its single-slot design and 145 mm length allow it to fit in compact cases, though the 250 W suggested PSU requirement must be respected.

The HD 530 wins in efficiency and modern API compatibility. Its 15 W TDP is 78.6% lower than the GT 545’s 70 W, making it ideal for thin-and-light systems. The 22.80 GTexel/s texture rate, boosted by its 950 MHz clock, gives it an edge in texture-heavy workloads. Its Vulkan 1.3 and DirectX 12_1 support mean it can run newer titles that leverage these APIs, something the GT 545 cannot claim. The FP16 capability of 729.6 GFLOPS also opens the door to workloads that the Fermi architecture cannot handle.

The data ultimately suggests that while the GT 545 holds a narrow lead in the one test where both are measured, the HD 530’s architectural advantages in API support, efficiency, and texture throughput make it the more versatile part for modern use cases. The GT 545 remains a viable option for legacy applications where its dedicated memory and pixel throughput matter more than feature support.