AMD Radeon R5 Graphics vs NVIDIA Quadro P400 Comparison

Where Each One Wins

The benchmark data splits cleanly between these two GPUs, with each taking one decisive victory in the two recorded tests. The AMD Radeon R5 Graphics wins the OpenCL workload, while the NVIDIA Quadro P400 dominates the Vulkan test. This is not a close contest in either direction; each card claims its preferred API by a wide margin.

In Geekbench OpenCL, the AMD Radeon R5 Graphics scores 5183 against the Quadro P400's 4249, a 22% advantage. This is the R5's only benchmark win, but it is substantial. OpenCL workloads tend to favor the AMD architecture here, and the data reflects that with a clear gap.

The Vulkan test tells the opposite story. The Quadro P400 posts 5119, while the Radeon R5 Graphics manages just 2582. That is a 49.6% deficit for AMD, meaning the NVIDIA card more than doubles the AMD part in this workload. For any application relying on Vulkan, the Quadro P400 is the obvious choice based on recorded results.

Looking at the broader database averages, the Quadro P400 holds a 4684 average benchmark score versus 3883 for the Radeon R5 Graphics. That puts the NVIDIA card in the 27th percentile of all GPUs, while the AMD IGP sits at the 23rd percentile. The average scores confirm that while the OpenCL win is real, the overall balance of recorded performance favors the Quadro P400.

Architecture Differences

The two GPUs come from fundamentally different design philosophies and manufacturing processes. The AMD Radeon R5 Graphics uses the Spectre SL chip built on GCN 2.0 architecture, specifically the Kaveri generation of integrated graphics. It is manufactured on a 28 nm process at GlobalFoundries. The chip contains 2,410 million transistors on a 245 mm² die, giving a transistor density of 9.8 million per square millimeter.

The NVIDIA Quadro P400 uses the GP107 chip based on Pascal architecture, from the Quadro Pascal Px000 generation. It is built on a 14 nm process at Samsung, packing 3,300 million transistors into a much smaller 132 mm² die. That yields a transistor density of 25.0 million per square millimeter, more than double the AMD part's density.

Memory configurations differ entirely. The Radeon R5 Graphics uses system shared memory, with size, type, bus width, and bandwidth all listed as system dependent. The Quadro P400 has dedicated 2 GB of GDDR5 memory on a 64-bit bus, providing 32.06 GB/s of bandwidth. Its memory clock runs at 1002 MHz with 4 Gbps effective data rate. This dedicated memory gives the NVIDIA card a structural advantage in workloads that require consistent memory access without competing with the CPU.

The clock situation also separates them. The AMD part lists no base or boost clock in the database, while the Quadro P400 runs at 1228 MHz base and 1252 MHz boost. The R5's memory clock is likewise system shared, with no fixed figure.

Shading units are equal at 256, and texture mapping units match at 16. The ROP count, however, differs significantly: the Radeon R5 has 4 ROPs while the Quadro P400 has 16. This explains the pixel rate gap, 3.032 GPixel/s for AMD versus 20.03 GPixel/s for NVIDIA. Texture rates also favor the Quadro P400 at 20.03 GTexel/s versus 12.13 GTexel/s for the R5. FP32 compute is 388.1 GFLOPS for AMD and 641.0 GFLOPS for NVIDIA. The Quadro P400 also lists FP16 at 10.02 GFLOPS with a 1:64 ratio, while the R5 has no FP16 figure.

Power and physical design differ as well. The Radeon R5 Graphics is an IGP with a 15 W TDP, no power connectors, and motherboard-dependent display outputs. The Quadro P400 is a single-slot card rated at 30 W with no power connectors, a suggested PSU of 200 W, and a PCIe 3.0 x16 interface. It measures 150 mm in length and 69 mm in height. Display outputs on the NVIDIA card are 3x mini-DisplayPort 1.4a.

API support shows a notable split. Both support DirectX 12 and OpenGL 4.6. The Radeon R5 supports DirectX 12 (12_0) and Vulkan 1.2.170. The Quadro P400 supports DirectX 12 (12_1) and Vulkan 1.4, a newer Vulkan revision that likely contributes to its strong Vulkan benchmark showing.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA Quadro P400 averages 4684 across all recorded benchmarks, while the AMD Radeon R5 Graphics averages 3883. The Quadro P400 sits in the 27th percentile of all GPUs, compared to the 23rd percentile for the Radeon R5.

Q: How do the two cards compare in OpenCL performance?

A: The AMD Radeon R5 Graphics wins the Geekbench OpenCL test with a score of 5183, which is 22% higher than the Quadro P400's 4249.

Q: Which GPU performs better in Vulkan workloads?

A: The NVIDIA Quadro P400 scores 5119 in Geekbench Vulkan, versus 2582 for the AMD Radeon R5 Graphics. That represents a 49.6% advantage for the NVIDIA card.

Q: What are the memory specifications for each GPU?

A: The Radeon R5 Graphics uses system shared memory with no fixed size, type, bus width, or bandwidth. The Quadro P400 has 2 GB of GDDR5 memory on a 64-bit bus with 32.06 GB/s bandwidth.

Q: Do the two GPUs have the same number of shading units?

A: Yes, both have 256 shading units and 16 texture mapping units. They differ in ROPs, with the Radeon R5 having 4 and the Quadro P400 having 16.

Q: What is the transistor density difference between the two chips?

A: The NVIDIA Quadro P400's GP107 chip has a density of 25.0 million transistors per square millimeter on a 14 nm process. The AMD Radeon R5 Graphics' Spectre SL chip has 9.8 million per square millimeter on a 28 nm process.

Specification Differences

| Field | AMD Radeon R5 Graphics | NVIDIA Quadro P400 |

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

| Architecture | GCN 2.0 | Pascal |

| Generation | GCN 2.0 IGP (Kaveri) | Quadro Pascal (Px000) |

| Process Node | 28 nm | 14 nm |

| Foundry | GlobalFoundries | Samsung |

| Transistors | 2,410 million | 3,300 million |

| Die Size | 245 mm² | 132 mm² |

| Transistor Density | 9.8M / mm² | 25.0M / mm² |

| Base Clock | None listed | 1228 MHz |

| Boost Clock | None listed | 1252 MHz |

| Memory Clock | System Shared | 1002 MHz, 4 Gbps effective |

| Memory Size | System Shared | 2 GB |

| Memory Type | System Shared | GDDR5 |

| Memory Bus Width | System Shared | 64 bit |

| Memory Bandwidth | System Dependent | 32.06 GB/s |

| ROPs | 4 | 16 |

| Pixel Rate | 3.032 GPixel/s | 20.03 GPixel/s |

| Texture Rate | 12.13 GTexel/s | 20.03 GTexel/s |

| FP32 | 388.1 GFLOPS | 641.0 GFLOPS |

| FP16 | None listed | 10.02 GFLOPS (1:64) |

| TDP | 15 W | 30 W |

| Slot Width | IGP | Single-slot |

| Bus Interface | IGP | PCIe 3.0 x16 |

| Display Outputs | Motherboard Dependent | 3x mini-DisplayPort 1.4a |

| DirectX | 12 (12_0) | 12 (12_1) |

| Vulkan | 1.2.170 | 1.4 |

| Dimensions | None listed | 150 mm length, 69 mm height |

| Release Date | 2014-09-16 | 2017-02-06 |

| Predecessor | TeraScale 3 IGP | Quadro Maxwell |

| Successor | GCN 3.0 IGP | Quadro Volta |

Head-to-Head Benchmarks

The two recorded head-to-head tests show a split decision with extreme margins in both directions. The Geekbench OpenCL result favors the AMD Radeon R5 Graphics at 5183 versus 4249 for the Quadro P400, a 22% lead. This is the AMD part's only win, but it is a convincing one. In OpenCL environments, the R5's GCN architecture demonstrates a clear advantage over Pascal.

The Geekbench Vulkan result reverses the outcome emphatically. The Quadro P400 scores 5119 against the R5's 2582, a 49.6% deficit for AMD. The NVIDIA card nearly doubles the AMD part's Vulkan performance. This gap aligns with the API version difference: the Quadro P400 supports Vulkan 1.4 while the Radeon R5 supports only 1.2.170. The newer driver and hardware path for Vulkan clearly translates into measurable benchmark gains.

Looking at the nearest rivals in the database provides context for each card's standing. The Radeon R5 Graphics, with its 3883 average, sits close to the NVIDIA Quadro 2000 at 3898 (0.4% behind), the Quadro K2000D at 3919 (0.9% behind), and the Quadro 2000D at 3930 (1.2% behind). It edges out the GeForce MX110 at 3834 by 1.3%. These are all narrow margins, placing the R5 in a tight cluster of low-end GPUs.

The Quadro P400's 4684 average places it near the AMD Radeon RX 9060 XT 16 GB at 4657 (0.6% ahead) and the Radeon R5 M320 at 4657 (0.6% ahead). The R8 M445DX is 0.9% ahead at 4727, while the GeForce GTX 970M trails by 1.2% at 4628. The P400's average sits comfortably above the R5's, reinforcing the overall picture from the head-to-head results.

The wins are split evenly at one each, but the magnitude of the Vulkan victory outweighs the OpenCL win in terms of the average benchmark score. The Quadro P400's 4684 average versus 3883 for the R5 represents a 20.6% overall gap, driven primarily by the Vulkan result.

The Verdict

The data supports a clear recommendation for the NVIDIA Quadro P400 for most use cases. Its average benchmark score of 4684 is substantially higher than the Radeon R5 Graphics' 3883. The P400 also carries a higher percentile ranking at 27 versus 23. For anyone running Vulkan-based applications, the choice is unambiguous: the Quadro P400 delivers 5119 in Vulkan, more than double the R5's 2582.

The AMD Radeon R5 Graphics has one specific strength: OpenCL performance. Its 5183 score in that test is 22% better than the Quadro P400's 4249. If the workload is exclusively OpenCL and the system already relies on an integrated GPU with shared memory, the R5 holds the advantage. It also consumes less power at 15 W versus 30 W, though both cards require no external power connectors.

For professional or workstation use, the Quadro P400 offers dedicated 2 GB GDDR5 memory with 32.06 GB/s bandwidth, a 64-bit bus, and 16 ROPs. The R5's system shared memory is entirely dependent on the host system's RAM and configuration. The P400's 16 ROPs versus 4 on the R5 translates to a pixel rate of 20.03 GPixel/s versus 3.032 GPixel/s, a massive difference for any display or rasterization workload.

The architecture gap is also decisive. The Quadro P400's newer 14 nm Pascal process, higher transistor density, and newer Vulkan API support (1.4 versus 1.2.170) give it a structural edge. The R5's GCN 2.0 design from the Kaveri generation is older, built on 28 nm, and lacks the dedicated memory path.

The verdict: pick the NVIDIA Quadro P400 for Vulkan workloads, higher average performance, dedicated memory, and better pixel throughput. Pick the AMD Radeon R5 Graphics only if OpenCL performance is the sole criterion and the system integration of an IGP is preferred. The benchmark data does not support any other conclusion.