AMD Radeon R9 M265X vs NVIDIA Quadro P5000 Comparison

The Verdict

The data separates these two GPUs into entirely different performance classes. The NVIDIA Quadro P5000 dominates the only shared benchmark, Geekbench OpenCL, with a score of 52,509 against the AMD Radeon R9 M265X's 8,851. That is an 83.1% advantage for the Quadro P5000, a gap so wide that the AMD part cannot be considered competitive in any compute-oriented workload.

The AMD Radeon R9 M265X sits at the 44th percentile among all GPUs in the database, while the Quadro P5000 sits at the 41st percentile. Despite the massive OpenCL gap, the percentile rankings are close because the database averages across all recorded benchmarks for each card. The Quadro P5000 has ten recorded benchmark entries, including several low DirectX scores that pull its average down to 8,039. The AMD card has only one benchmark entry, 8,851, which becomes its average. The Quadro P5000's average of 8,039 places it within 0.2% of the GeForce GTX 650 Ti and 0.3% of the GTX 650 Ti Boost. The AMD R9 M265X's average places it within 0.1% of the Radeon Pro WX 5100 and 0.8% of the Radeon 550X.

For a user choosing between these two, the Quadro P5000 is the clear pick for any workload measured by OpenCL compute. The AMD part is a legacy mobile GPU from the GCN 1.0 era, end-of-life, with 2 GB of GDDR5 and a 128-bit bus. The Quadro P5000 is also end-of-life but carries 16 GB of GDDR5X on a 256-bit bus. The data does not support any scenario where the AMD card wins a head-to-head comparison. The Quadro P5000 is the only choice supported by the benchmark record.

Where Each One Wins

The head-to-head benchmark table contains exactly one entry, and the Quadro P5000 wins it. The AMD Radeon R9 M265X has zero wins in the recorded head-to-head data. The Quadro P5000 has one win.

The Geekbench OpenCL test is a general-purpose compute workload. The Quadro P5000's score of 52,509 versus the R9 M265X's 8,851 reflects a difference in raw shader throughput and memory bandwidth. The Quadro P5000 has 2,560 shading units, 160 texture units, 64 ROPs, and 288.5 GB/s of memory bandwidth. The AMD card has 640 shading units, 40 texture units, 16 ROPs, and 64.00 GB/s. Those specifications line up with the measured 83.1% deficit for the AMD part.

The Quadro P5000 also records a Vulkan score of 6,342 and a PassMark G3D score of 12,634, plus a PassMark GPU compute score of 6,508. No comparable scores exist for the AMD card in the database, so no direct comparison is possible for those tests. The AMD card's only recorded benchmark is the OpenCL test, and it loses that one decisively.

Architecture Differences

The AMD Radeon R9 M265X uses the Venus chip on the GCN 1.0 architecture, built on TSMC's 28 nm process. It integrates 1,500 million transistors on a 123 mm² die, for a transistor density of 12.2M per mm². The Quadro P5000 uses the GP104 chip on the Pascal architecture, built on TSMC's 16 nm process. It integrates 7,200 million transistors on a 314 mm² die, for a transistor density of 22.9M per mm².

The manufacturing node difference is significant. The 16 nm process allows the Quadro P5000 to pack nearly five times as many transistors into a die that is only about 2.5 times larger. The transistor density figure shows the Pascal design is more efficient per square millimeter.

The memory subsystems differ completely. The AMD card uses 2 GB of GDDR5 on a 128-bit bus, with 64.00 GB/s of bandwidth and memory clocked at 1000 MHz (4 Gbps effective). The Quadro P5000 uses 16 GB of GDDR5X on a 256-bit bus, with 288.5 GB/s of bandwidth and memory clocked at 1127 MHz (9 Gbps effective). The Quadro P5000 has eight times the memory capacity and roughly 4.5 times the bandwidth.

The compute pipelines reflect the generational gap. The AMD card offers 800.0 GFLOPS of FP32 performance. The Quadro P5000 offers 8.873 TFLOPS of FP32, which is over eleven times higher. The Quadro P5000 also records an FP16 figure of 138.6 GFLOPS at a 1:64 ratio, while the AMD card lists no FP16 capability.

The DirectX support levels differ. The AMD card supports DirectX 12 (11_1), while the Quadro P5000 supports DirectX 12 (12_1). Both support OpenGL 4.6. The Vulkan versions differ: the AMD card lists Vulkan 1.2.170, the Quadro P5000 lists Vulkan 1.4.

The Quadro P5000 is a dual-slot card with a 180 W TDP, one 8-pin power connector, a 450 W suggested PSU, and dimensions of 267 mm in length and 111 mm in height. The AMD card lists no TDP, no slot width, no power connector, and no dimensions. The Quadro P5000 has display outputs of 1x DVI and 4x DisplayPort 1.4a. The AMD card lists no display outputs.

FAQ

Q: Which GPU has the higher OpenCL score?

A: The NVIDIA Quadro P5000 scores 52,509 in Geekbench OpenCL, against 8,851 for the AMD Radeon R9 M265X. The Quadro P5000 leads by 83.1%.

Q: How do their memory configurations compare?

A: The Quadro P5000 has 16 GB of GDDR5X on a 256-bit bus with 288.5 GB/s bandwidth. The Radeon R9 M265X has 2 GB of GDDR5 on a 128-bit bus with 64.00 GB/s bandwidth.

Q: What are the transistor counts on each chip?

A: The AMD Venus chip has 1,500 million transistors on a 123 mm² die. The NVIDIA GP104 chip has 7,200 million transistors on a 314 mm² die.

Q: Which card supports newer DirectX features?

A: The Quadro P5000 supports DirectX 12 (12_1), while the Radeon R9 M265X supports DirectX 12 (11_1).

Q: What is the FP32 compute output for each card?

A: The Radeon R9 M265X delivers 800.0 GFLOPS. The Quadro P5000 delivers 8.873 TFLOPS.

Q: Are both cards end-of-life?

A: Yes, both are recorded as end-of-life products. The Radeon R9 M265X released on 2014-03-20, and the Quadro P5000 released on 2016-09-30.

Head-to-Head Benchmarks

The database records a single shared benchmark between these two GPUs: Geekbench OpenCL. The results are not close. The Quadro P5000 scores 52,509, and the Radeon R9 M265X scores 8,851. The delta percentage of -83.1% for the AMD card means it trails by more than five-sixths of the Quadro P5000's score.

That OpenCL result is consistent with the raw specifications. The Quadro P5000's FP32 output of 8.873 TFLOPS is over eleven times the AMD card's 800.0 GFLOPS. The Quadro P5000's texture rate of 277.3 GTexel/s compares to 25.00 GTexel/s for the AMD card, an elevenfold gap. The pixel rates differ similarly: 110.9 GPixel/s for the Quadro P5000 versus 10.00 GPixel/s for the AMD card.

Memory bandwidth is another major divider. The Quadro P5000's 288.5 GB/s is roughly 4.5 times the AMD card's 64.00 GB/s. That bandwidth advantage matters in OpenCL workloads that stream large data sets.

The Quadro P5000 has additional benchmark entries that show its behavior across different APIs. Its PassMark G3D score is 12,634, its PassMark GPU compute score is 6,508, and its Geekbench Vulkan score is 6,342. Its DirectX-specific PassMark scores are 170 for DirectX 9, 102 for DirectX 11, 77 for DirectX 10, and 44 for DirectX 12. Its PassMark G2D score is 674. These scores have no AMD counterpart in the database, so they cannot be compared directly, but they show the Quadro P5000's strongest results come from compute and general 3D workloads, not legacy DirectX paths.

The closest rivals to the Radeon R9 M265X are the Radeon Pro WX 5100 with an average score of 8,863 (0.1% higher), the Radeon 550X with 8,918 (0.8% higher), the GeForce RTX 3050 A Mobile with 8,746 (1.2% lower), and the GeForce GTX 460 v2 with 8,743 (1.2% lower). These deltas are all within 1.2%, meaning the R9 M265X's average score of 8,851 places it in a tight cluster of mid-range and older GPUs.

The closest rivals to the Quadro P5000 are the GeForce GTX 880M with an average score of 8,040 (0% delta), the GeForce GTX 650 Ti with 8,053 (0.2% higher), the GeForce GTX 650 Ti Boost with 8,067 (0.3% higher), and the GRID K2 with 8,080 (0.5% higher). The Quadro P5000's average of 8,039 is effectively tied with the GTX 880M, despite the Quadro P5000's much higher OpenCL score. This is because the Quadro P5000's average includes several low DirectX scores that drag it down.

Specification Differences

| Specification | AMD Radeon R9 M265X | NVIDIA Quadro P5000 |

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

| Chip | Venus | GP104 |

| Architecture | GCN 1.0 | Pascal |

| Process node | 28 nm | 16 nm |

| Transistors | 1,500 million | 7,200 million |

| Die size | 123 mm² | 314 mm² |

| Transistor density | 12.2M / mm² | 22.9M / mm² |

| Base clock | 575 MHz | 1607 MHz |

| Boost clock | 625 MHz | 1733 MHz |

| Memory clock | 1000 MHz (4 Gbps effective) | 1127 MHz (9 Gbps effective) |

| Memory size | 2 GB | 16 GB |

| Memory type | GDDR5 | GDDR5X |

| Memory bus | 128 bit | 256 bit |

| Memory bandwidth | 64.00 GB/s | 288.5 GB/s |

| Shading units | 640 | 2560 |

| TMUs | 40 | 160 |

| ROPs | 16 | 64 |

| Pixel rate | 10.00 GPixel/s | 110.9 GPixel/s |

| Texture rate | 25.00 GTexel/s | 277.3 GTexel/s |

| FP32 | 800.0 GFLOPS | 8.873 TFLOPS |

| FP16 | None listed | 138.6 GFLOPS (1:64) |

| TDP | None listed | 180 W |

| Slot width | None listed | Dual-slot |

| Power connectors | None listed | 1x 8-pin |

| Suggested PSU | None listed | 450 W |

| Display outputs | None listed | 1x DVI, 4x DisplayPort 1.4a |

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

| OpenGL | 4.6 | 4.6 |

| Vulkan | 1.2.170 | 1.4 |

| Length | None listed | 267 mm (10.5 inches) |

| Height | None listed | 111 mm (4.4 inches) |

| Release date | 2014-03-20 | 2016-09-30 |

| Launch MSRP | None listed | 2,499 USD |

The specification table shows a generational leap across every measurable category. The Quadro P5000 uses a smaller process node, more than four times the transistors, four times the shading units, four times the TMUs, four times the ROPs, eight times the memory capacity, twice the memory bus width, and roughly 4.5 times the memory bandwidth. Its clocks are nearly three times higher on both base and boost. The AMD card's only advantage is its smaller physical footprint, though no dimensions are recorded for it, so that claim rests on the die size alone. The Quadro P5000 is a professional workstation card with a 180 W TDP and dual-slot cooler, while the AMD part appears to be a mobile-class chip with no recorded power envelope.