AMD Radeon R9 M275X vs NVIDIA Quadro K5000 Comparison

The AMD Radeon R9 M275X and NVIDIA Quadro K5000 are both end-of-life mobile/workstation GPUs, but the benchmark data shows a clear performance hierarchy. The NVIDIA Quadro K5000 wins both head-to-head benchmark comparisons, though the margin varies significantly by workload. In the Geekbench OpenCL test, the Quadro K5000 scores 11,418 against the R9 M275X's 11,200, a narrow 1.9% advantage. The Vulkan test tells a different story: the Quadro K5000's 11,169 score crushes the R9 M275X's 9,964 by 10.8%. This split suggests the NVIDIA card holds a decisive edge in modern graphics API workloads, while the two are nearly matched in compute-oriented OpenCL tasks.

Head-to-Head Benchmarks

The data reveals a GPU that wins on raw compute but dominates on modern API performance. The Quadro K5000's OpenCL score of 11,418 edges out the R9 M275X's 11,200 by just 1.9%. That is a statistical tie in practical terms, placing both cards within the same performance tier for general-purpose compute. The R9 M275X's average benchmark score of 10,582 sits at the 49th percentile of all GPUs, while the Quadro K5000's average of 9,637 lands at the 46th percentile — a reversal that shows the R9 M275X performs better across a broader benchmark suite than its head-to-head losses suggest.

The Vulkan result is where the Quadro K5000 separates itself. Its 11,169 score versus the R9 M275X's 9,964 represents a 10.8% lead, a substantial gap for cards in this performance class. This matters because Vulkan is increasingly the API of choice for modern games and professional visualization tools. The R9 M275X's nearest rivals include the AMD Radeon RX 6600S (average score 10,629, delta -0.4%) and the NVIDIA GeForce GTX 560 Ti (10,690, delta -1%), showing it competes with much newer hardware in aggregate benchmarks. Meanwhile, the Quadro K5000's nearest rivals include the NVIDIA Quadro P4000 (9,665, delta -0.3%) and the AMD Radeon Pro WX 2100 (9,653, delta -0.2%), indicating it performs slightly below those professional cards despite its age.

Looking at the win column, the Quadro K5000 takes both head-to-head tests, giving it a 2-0 record. However, the R9 M275X's higher average benchmark score (10,582 vs 9,637) and better percentile ranking (49th vs 46th) suggest it offers more consistent performance across diverse workloads. The OpenCL near-tie is particularly notable given the architectural gulf between these two cards, which we will examine next.

Architecture Differences

These two GPUs represent fundamentally different design philosophies from their respective manufacturers. The AMD Radeon R9 M275X uses the Venus chip built on GCN 1.0 architecture, part of the Gem System (R9 M200) generation. The NVIDIA Quadro K5000 uses the GK104 chip on Kepler architecture, belonging to the Quadro Kepler (Kx000) generation. Both are fabricated on TSMC's 28 nm process node, with transistor densities of 12.2M per mm² for AMD and 12.0M per mm² for NVIDIA — a negligible difference.

The transistor counts and die sizes diverge sharply. The Quadro K5000 packs 3,540 million transistors on a 294 mm² die, while the R9 M275X contains only 1,500 million transistors on a 123 mm² die. That means the NVIDIA chip has more than double the transistor budget and a die over twice the size. This hardware disparity explains the Quadro K5000's higher raw throughput: it offers 2.169 TFLOPS of FP32 performance versus the R9 M275X's 1,184.0 GFLOPS. The Quadro K5000 also fields 1,536 shading units, 128 texture mapping units, and 32 ROPs, compared to the R9 M275X's 640 shading units, 40 TMUs, and 16 ROPs.

Memory configuration further widens the gap. The Quadro K5000 comes with 4 GB of GDDR5 on a 256-bit bus, delivering 172.8 GB/s of bandwidth. The R9 M275X has 2 GB of GDDR5 on a 128-bit bus, yielding just 72.00 GB/s. Clock speeds tell a more nuanced story: the R9 M275X runs at 900 MHz base and 925 MHz boost, while the Quadro K5000 is locked at 706 MHz for both base and boost. The AMD card's higher clocks partially compensate for its smaller hardware, but not enough to overcome the NVIDIA card's massive resource advantage.

Interface and power characteristics differ as well. The R9 M275X uses PCIe 3.0 x16, while the Quadro K5000 is limited to PCIe 2.0 x16. The Quadro K5000 has a 122 W TDP, requires a single 6-pin power connector, and is a dual-slot card measuring 267 mm in length. The R9 M275X has no listed TDP, slot width, or power connector requirements, indicating it was designed for lower power envelopes typical of mobile parts. In terms of API support, the R9 M275X supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, while the Quadro K5000 supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175.

FAQ

Q: Which GPU wins in Vulkan performance?

A: The NVIDIA Quadro K5000 wins decisively, scoring 11,169 against the AMD Radeon R9 M275X's 9,964, a 10.8% advantage.

Q: How close are these cards in OpenCL compute?

A: They are nearly tied. The Quadro K5000 scores 11,418 versus the R9 M275X's 11,200, a margin of just 1.9%.

Q: Which card has more memory bandwidth?

A: The Quadro K5000 offers 172.8 GB/s from its 4 GB GDDR5 on a 256-bit bus, versus the R9 M275X's 72.00 GB/s from 2 GB GDDR5 on a 128-bit bus.

Q: What is the transistor density difference?

A: The R9 M275X has 12.2M transistors per mm², while the Quadro K5000 has 12.0M per mm², making them nearly identical in density despite very different die sizes.

Q: Which card has a higher boost clock?

A: The R9 M275X boosts to 925 MHz, while the Quadro K5000 is fixed at 706 MHz for both base and boost clocks.

Q: How do their average benchmark scores compare?

A: The R9 M275X averages 10,582 across all benchmarks, beating the Quadro K5000's 9,637 average, despite losing both head-to-head tests.

Specification Differences

| Specification | AMD Radeon R9 M275X | NVIDIA Quadro K5000 |

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

| Chip | Venus | GK104 |

| Architecture | GCN 1.0 | Kepler |

| Transistors | 1,500 million | 3,540 million |

| Die Size | 123 mm² | 294 mm² |

| Base Clock | 900 MHz | 706 MHz |

| Boost Clock | 925 MHz | 706 MHz |

| Memory Size | 2 GB | 4 GB |

| Memory Bus | 128 bit | 256 bit |

| Memory Bandwidth | 72.00 GB/s | 172.8 GB/s |

| Shading Units | 640 | 1536 |

| TMUs | 40 | 128 |

| ROPs | 16 | 32 |

| Pixel Rate | 14.80 GPixel/s | 22.59 GPixel/s |

| Texture Rate | 37.00 GTexel/s | 90.37 GTexel/s |

| FP32 Performance | 1,184.0 GFLOPS | 2.169 TFLOPS |

| TDP | Not specified | 122 W |

| Slot Width | Not specified | Dual-slot |

| Power Connectors | Not specified | 1x 6-pin |

| Bus Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |

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

| Vulkan Support | 1.2.170 | 1.2.175 |

| Release Date | 2014-01-27 | 2012-08-16 |

| Launch MSRP | Not specified | 2,499 USD |

Where Each One Wins

The NVIDIA Quadro K5000 wins in every scenario where raw throughput matters. Its 2.169 TFLOPS FP32 performance, 172.8 GB/s memory bandwidth, and 90.37 GTexel/s texture rate give it overwhelming advantages in texture-heavy workloads, large dataset processing, and any task that saturates memory bandwidth. The 4 GB frame buffer doubles the R9 M275X's capacity, making it the clear choice for multi-display setups or rendering scenes with large texture atlases. Its Vulkan lead of 10.8% also makes it the better option for modern API-based applications, whether in gaming or professional visualization.

The AMD Radeon R9 M275X wins on efficiency and consistency. Its higher average benchmark score of 10,582 against the Quadro K5000's 9,637 indicates it handles a wider variety of workloads without performance cliffs. The 925 MHz boost clock, combined with the PCIe 3.0 x16 interface, gives it an edge in latency-sensitive tasks that benefit from faster clock speeds and newer bus technology. Its OpenCL near-tie with the Quadro K5000, despite having less than half the shading units and a quarter of the memory bandwidth, suggests AMD's GCN architecture extracts more compute per resource. For users constrained by power or space, the R9 M275X's lack of a listed TDP and unspecified slot width imply a more compact, lower-power design.

The percentile rankings further illustrate the split. The R9 M275X sits at the 49th percentile of all GPUs, while the Quadro K5000 sits at the 46th. This means the AMD card outperforms a larger share of the GPU population overall, even though it loses to the NVIDIA card in direct comparison. The R9 M275X's nearest rivals include the AMD Radeon RX 6600S (delta -0.4%) and NVIDIA GeForce GTX 560 Ti (delta -1%), showing it trades blows with much newer hardware. The Quadro K5000's nearest rivals include the NVIDIA Quadro P4000 (delta -0.3%) and AMD Radeon Pro WX 2100 (delta -0.2%), indicating it sits at the lower end of professional workstation performance.

The Verdict

Choose the NVIDIA Quadro K5000 if your priority is maximum throughput in professional applications. It wins both head-to-head benchmarks, offers double the memory capacity, and provides over 80% more memory bandwidth. The 10.8% Vulkan advantage makes it the safer bet for forward-looking software that leverages modern graphics APIs. Its 122 W TDP and dual-slot design indicate a desktop-oriented card that can sustain heavy loads, and the 2,499 USD launch MSRP positions it as a professional-grade product.

Choose the AMD Radeon R9 M275X if you value balanced performance across diverse workloads. Despite losing both direct comparisons, its higher average benchmark score (10,582 vs 9,637) and better percentile ranking (49th vs 46th) show it performs more consistently across a broader range of tests. The 925 MHz boost clock and PCIe 3.0 x16 interface make it more responsive in latency-sensitive tasks. Its smaller die (123 mm² vs 294 mm²) and lower transistor count (1,500 million vs 3,540 million) suggest better power efficiency per unit of performance.

The data ultimately supports a clear verdict: the Quadro K5000 is the stronger GPU in absolute terms, particularly for Vulkan-based workloads where its 10.8% lead is decisive. The R9 M275X is the more versatile card, as evidenced by its higher aggregate benchmark score. Neither card is competitive with modern hardware — the R9 M275X's closest rival, the RX 6600S, beats it by 0.4%, while the Quadro K5000's closest rival, the Quadro P4000, beats it by 0.3%. For new purchases, both are end-of-life products, but for those choosing between these two specific options, the Quadro K5000 delivers more performance where it counts.