GPU Comparison

Intel HD Graphics P4600 is an integrated graphics solution from Intel, built on the Haswell GT2 chip with Generation 7.5 architecture, while the NVIDIA Quadro P1000 is a dedicated single-slot professional GPU based on the Pascal architecture and GP107 chip. The data shows a stark performance differential between the two, with the Quadro P1000 dominating in compute benchmarks, though both occupy a similar low percentile ranking among all GPUs.

Head-to-Head Benchmarks

The only direct head-to-head benchmark available is Geekbench OpenCL, and the result is decisively one-sided. The NVIDIA Quadro P1000 scores 13,584 points, while the Intel HD Graphics P4600 manages just 3,389 points. This translates to a deltaPct of -75.1% for the Intel part, meaning the Quadro P1000 delivers approximately four times the OpenCL compute performance. This is not a marginal victory; it is a generational and architectural gap made visible in raw numbers.

Contextualizing the Intel HD Graphics P4600’s score, its nearest rivals in the database are the NVIDIA GeForce GT 740 at 3,431 points (deltaPct of -1.2%), the NVIDIA Quadro 2000M at 3,434 points (deltaPct of -1.3%), the Intel HD Graphics 530 at 3,332 points (deltaPct of 1.7%), and the NVIDIA GeForce GT 730M at 3,316 points (deltaPct of 2.2%). The P4600 sits firmly in this cluster, within a few percentage points of each. The data suggests that the P4600 is competitive with low-end discrete mobile GPUs from several generations ago, but it is not breaking any performance barriers.

For the Quadro P1000, its average benchmark score across all tests is 3,163, which is notably lower than its OpenCL score alone. This discrepancy is explained by its performance in other benchmark suites. The passmark_g3d score is 4,512, and passmark_gpu_compute is 1,891. However, the DirectX scores are surprisingly low: passmark_directx_9 is 79, passmark_directx_11 is 31, passmark_directx_10 is 21, and passmark_directx_12 is 19. The passmark_g2d score is 589. These numbers indicate that while the P1000 excels in certain compute workloads (OpenCL), its performance in legacy DirectX tests is far less impressive, pulling down its average. The nearest rivals for the P1000 include the Intel Arc Pro B60 (deltaPct -0.6%), NVIDIA GeForce GT 640 (deltaPct -1.5%), NVIDIA GeForce RTX 5080 SUPER (deltaPct 2.9%), and NVIDIA GeForce 920M (deltaPct -3.8%) based on average score.

Architecture Differences

The architectural divide between these two GPUs is vast, explaining the benchmark results. The Intel HD Graphics P4600 uses a 22 nm process node fabricated by Intel, while the Quadro P1000 uses a 14 nm node from Samsung. The Intel chip, Haswell GT2, is based on Generation 7.5 architecture, whereas the Quadro P1000 is built on the Pascal architecture. The transistor count and die size are only listed for the Quadro P1000, which has 3,300 million transistors on a 132 mm² die, yielding a transistor density of 25.0M / mm².

Core configuration differences are substantial. The Intel P4600 has 160 shading units, 20 TMUs, and only 2 ROPs. The Quadro P1000 quadruples the shading units to 640, doubles the TMUs to 40, and increases ROPs sixteen-fold to 32. This massive increase in ROPs is critical for pixel throughput; the P1000 achieves a pixel rate of 47.36 GPixel/s versus a paltry 2.400 GPixel/s for the P4600. Texture rate also favors the P1000 at 59.20 GTexel/s compared to 24.00 GTexel/s. Floating-point performance (FP32) is 1.894 TFLOPS for the P1000 versus 384.0 GFLOPS for the P4600, a roughly five-fold advantage.

Memory architecture is another fundamental split. The P4600 uses System Shared memory, with bandwidth listed as System Dependent. The P1000 has 4 GB of dedicated GDDR5 memory on a 128-bit bus, delivering 80.19 GB/s of bandwidth. Clock speeds also differ: the P4600 runs at a base of 350 MHz and boost of 1200 MHz, while the P1000 runs at 1266 MHz base and 1480 MHz boost, with memory clocked at 1253 MHz (5 Gbps effective). The P1000 also supports FP16 at 29.60 GFLOPS (1:64 ratio), which the P4600 does not list. API support is improved on the P1000, with DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4, versus DirectX 12 (11_1), OpenGL 4.3, and Vulkan 1.0 on the P4600.

FAQ

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

A: The NVIDIA Quadro P1000 is the clear winner, scoring 13,584 points in Geekbench OpenCL compared to 3,389 points for the Intel HD Graphics P4600, a deltaPct of -75.1% for the Intel part.

Q: How does the Intel HD Graphics P4600 compare to its closest rivals?

A: The data shows the P4600 is within a tight performance band of its nearest competitors. It is 1.2% slower than the NVIDIA GeForce GT 740, 1.3% slower than the NVIDIA Quadro 2000M, 1.7% faster than the Intel HD Graphics 530, and 2.2% faster than the NVIDIA GeForce GT 730M.

Q: Is the Quadro P1000's average benchmark score representative of its OpenCL performance?

A: No. The P1000's average benchmark score is 3,163, which is significantly lower than its Geekbench OpenCL score of 13,584. This is due to very low scores in Passmark DirectX tests (e.g., 19 in DirectX 12, 21 in DirectX 10), which drag down the average.

Q: What is the memory configuration difference between the two?

A: The Intel HD Graphics P4600 relies on System Shared memory with bandwidth that is System Dependent. The Quadro P1000 features 4 GB of dedicated GDDR5 memory on a 128-bit bus, providing a fixed 80.19 GB/s bandwidth.

Q: Which GPU has a higher pixel fillrate?

A: The NVIDIA Quadro P1000 has a substantially higher pixel rate of 47.36 GPixel/s, compared to 2.400 GPixel/s for the Intel HD Graphics P4600. This is largely due to the P1000's 32 ROPs versus only 2 on the P4600.

Q: Do both GPUs support modern APIs?

A: Both support DirectX 12, but the P1000 supports version 12_1 while the P4600 supports 11_1. The P1000 also supports OpenGL 4.6 and Vulkan 1.4, while the P4600 is limited to OpenGL 4.3 and Vulkan 1.0.

Specification Differences

The following fields differ between the two GPUs, excluding those that are null or identical.

| Specification | Intel HD Graphics P4600 | NVIDIA Quadro P1000 |

| :--- | :--- | :--- |

| Manufacturer | Intel | NVIDIA |

| Chip | Haswell GT2 | GP107 |

| Architecture | Generation 7.5 | Pascal |

| Generation | HD Graphics-W (Haswell) | Quadro Pascal (Px000) |

| Process Node | 22 nm | 14 nm |

| Foundry | Intel | Samsung |

| Transistors | Not listed | 3,300 million |

| Die Size | Not listed | 132 mm² |

| Transistor Density | Not listed | 25.0M / mm² |

| Base Clock | 350 MHz | 1266 MHz |

| Boost Clock | 1200 MHz | 1480 MHz |

| Memory Clock | System Shared | 1253 MHz / 5 Gbps effective |

| Memory Size | System Shared | 4 GB |

| Memory Type | System Shared | GDDR5 |

| Memory Bus Width | System Shared | 128 bit |

| Memory Bandwidth | System Dependent | 80.19 GB/s |

| Shading Units | 160 | 640 |

| TMUs | 20 | 40 |

| ROPs | 2 | 32 |

| Pixel Rate | 2.400 GPixel/s | 47.36 GPixel/s |

| Texture Rate | 24.00 GTexel/s | 59.20 GTexel/s |

| FP32 Performance | 384.0 GFLOPS | 1.894 TFLOPS |

| FP16 Performance | Not listed | 29.60 GFLOPS (1:64) |

| TDP | 84 W | 47 W |

| Slot Width | IGP | Single-slot |

| Suggested PSU | Not listed | 200 W |

| Bus Interface | Ring Bus | PCIe 3.0 x16 |

| Display Outputs | Motherboard Dependent | 4x mini-DisplayPort 1.4a |

| DirectX | 12 (11_1) | 12 (12_1) |

| OpenGL | 4.3 | 4.6 |

| Vulkan | 1.0 | 1.4 |

| Dimensions | Not listed | 150 mm / 5.9 inches length, 69 mm / 2.7 inches height |

| Release Date | 2013-05-31 | 2017-02-06 |

| Predecessor | Not listed | Quadro Maxwell |

| Successor | Not listed | Quadro Volta |

The Verdict

The benchmark data is unambiguous regarding raw compute performance. The NVIDIA Quadro P1000 is superior to the Intel HD Graphics P4600 in every measurable compute category, with a 301% higher OpenCL score. The P1000 offers dedicated GDDR5 memory, a vastly higher pixel rate, and significantly more shading units, TMUs, and ROPs. Anyone requiring GPU compute for professional applications should choose the Quadro P1000 based on this data.

However, the story is not entirely one-sided when considering the broader context. The Intel HD Graphics P4600 is an IGP with a TDP of 84 W, which is higher than the P1000's 47 W, but it requires no separate card slot and its display outputs are motherboard dependent, meaning it has zero incremental hardware cost for a system that already has an appropriate Intel processor. The P4600's performance is competitive with low-end discrete GPUs like the GT 730M and GT 740, making it sufficient for basic graphical output and light workloads.

The Quadro P1000's average benchmark score of 3,163 places it in the 20th percentile of all GPUs, identical to the P4600's percentile. This suggests that while the P1000 is a strong performer in specific compute tasks, its overall benchmark profile is dragged down by poor DirectX legacy performance. The P1000 is an end-of-life product, as is the P4600, but the P1000 is a dedicated professional card with a successor (Quadro Volta) and predecessor (Quadro Maxwell), indicating a clear product lifecycle. The P4600 has no listed predecessor or successor, highlighting its nature as an integrated solution with no direct replacement lineage.

Where Each One Wins

The NVIDIA Quadro P1000 wins decisively in compute-heavy workloads. The Geekbench OpenCL score of 13,584 versus 3,389 indicates that for OpenCL-based rendering, simulation, or data processing, the P1000 is the only viable choice between the two. Its 1.894 TFLOPS FP32 performance and 80.19 GB/s dedicated memory bandwidth provide the necessary throughput for professional tasks. The P1000 also wins in any scenario requiring multiple high-resolution displays, given its 4x mini-DisplayPort 1.4a outputs, whereas the P4600's outputs are motherboard dependent and limited by the host system. The P1000's higher pixel rate of 47.36 GPixel/s makes it suitable for driving high-resolution displays or complex 3D scenes.

The Intel HD Graphics P4600 wins in scenarios where a discrete GPU cannot be installed or is unnecessary. As an IGP with a Ring Bus interface, it requires no PCIe slot and no power connectors, making it the only option for systems without expansion capabilities. Its performance, while low, is within 2.2% of the GeForce GT 730M and 1.7% faster than the Intel HD Graphics 530, meaning it can handle basic 2D desktop workloads, video playback, and light 3D acceleration. The P4600's System Shared memory model is not a performance advantage, but it eliminates the cost and complexity of dedicated VRAM. For legacy software that relies on older DirectX features, the P4600's DirectX 12 (11_1) support is lower than the P1000's 12_1, but the P1000's Passmark DirectX scores are remarkably low (e.g., 79 in DirectX 9), suggesting that the P4600 may not be significantly worse in those specific legacy tests. Ultimately, the P4600 is the choice for basic integrated graphics needs, while the P1000 is the choice for any serious compute or professional visualization work.