GPU Comparison

The NVIDIA Quadro M6000 and AMD Radeon Pro 5300 represent two very different eras of professional GPU design, separated by over five years of architectural evolution. The M6000 is a fully-enabled Maxwell 2.0 giant built for raw compute throughput, while the Radeon Pro 5300 is a compact RDNA 1.0 part designed for efficiency within the constraints of a Mac chassis. Benchmark results show a clear split: the Quadro dominates in Vulkan, while the Radeon counters with a Metal score that the NVIDIA card cannot match. The data shows a 2.4% OpenCL win for the M6000, a 31.1% Vulkan blowout, and a 17.6% Metal advantage for the AMD card.

FAQ

Q: Which GPU wins the OpenCL benchmark?

A: The NVIDIA Quadro M6000 wins the Geekbench OpenCL test with a score of 39,688, which is 2.4% ahead of the AMD Radeon Pro 5300's 38,747.

Q: How large is the Vulkan performance gap between the two cards?

A: The Vulkan delta is substantial. The M6000 scores 46,913, while the Radeon Pro 5300 scores 35,793, giving NVIDIA a 31.1% lead in that specific API test.

Q: Does the AMD card have any benchmark where it wins?

A: Yes. The Radeon Pro 5300 posts a Geekbench Metal score of 48,070. The the benchmark database does not list a Metal score for the Quadro M6000, so it cannot be directly compared, but this is the only benchmark where the AMD part has a recorded advantage.

Q: What is the average benchmark score for each GPU?

A: The Quadro M6000 has an average benchmark score of 43,301, placing it in the 84th percentile of all GPUs. The Radeon Pro 5300 averages 40,870, which puts it in the 82nd percentile.

Q: How do these cards compare to their closest rivals in the database?

A: The M6000's average score of 43,301 is nearly identical to the GeForce RTX 5050 Mobile (43,268, 0.1% delta) and the Quadro M6000 24 GB (43,262, 0.1% delta). The Radeon Pro 5300's 40,870 sits 1.2% below the GeForce RTX 5070 (40,377) and 1.4% above the Radeon Pro 580 (40,318).

Q: What are the production statuses of these two cards?

A: Both the NVIDIA Quadro M6000 and the AMD Radeon Pro 5300 are listed as end-of-life products in the database.

Architecture Differences

The architectural gulf between these two GPUs is stark, starting with the manufacturing process. The Quadro M6000 uses TSMC's 28 nm node, while the Radeon Pro 5300 is built on TSMC's 7 nm process. This node difference drives a massive disparity in transistor density: the M6000 packs 8,000 million transistors across a 601 mm² die, yielding a density of 13.3M transistors per mm². The Radeon Pro 5300, by contrast, fits 6,400 million transistors onto just 158 mm², achieving a density of 40.5M per mm², more than three times denser.

The chip designs themselves are fundamentally different. The M6000 uses the GM200 chip with NVIDIA's Maxwell 2.0 architecture, a design focused on raw geometry and FP32 throughput. The Radeon Pro 5300 uses Navi 14 with AMD's RDNA 1.0 architecture, which emphasizes higher clock speeds and improved instructions-per-clock over its predecessors. The clock behavior reflects this: the M6000 has a base clock of 988 MHz and a boost of 1114 MHz, while the Radeon Pro 5300 starts at 1000 MHz but boosts aggressively to 1650 MHz.

The compute configurations diverge sharply. The Quadro M6000 features 3,072 shading units, 192 TMUs, and 96 ROPs. The Radeon Pro 5300 has 1,280 shading units, 80 TMUs, and 32 ROPs, less than half in every category. Despite the lower counts, the Radeon's higher clocks yield a FP32 rating of 4.224 TFLOPS, versus 6.844 TFLOPS for the M6000. The AMD part does offer FP16 support at 8.448 TFLOPS (2:1 ratio), a feature the M6000 lacks entirely.

Memory architectures also tell a story of generational change. The M6000 uses 12 GB of GDDR5 on a 384-bit bus, delivering 317.4 GB/s of bandwidth. The Radeon Pro 5300 uses 4 GB of GDDR6 on a 128-bit bus, providing 224.0 GB/s. The older card has more capacity and bandwidth, but the newer card uses faster memory chips at 14 Gbps effective versus 6.6 Gbps on the NVIDIA.

Head-to-Head Benchmarks

The two Geekbench tests that both cards have in common paint a clear picture of NVIDIA's dominance in cross-platform APIs. In the OpenCL test, the Quadro M6000 scores 39,688 against the Radeon Pro 5300's 38,747. That is a 2.4% lead for NVIDIA, a modest margin that likely stems from the M6000's higher raw FP32 throughput (6.844 TFLOPS vs. 4.224 TFLOPS) and much larger memory bus (384-bit vs. 128-bit).

The Vulkan benchmark is where the gap becomes a canyon. The M6000 posts a score of 46,913, while the Radeon Pro 5300 manages only 35,793. That works out to a 31.1% advantage for the NVIDIA card. The delta is notable because Vulkan is a low-level API that typically favors architectures with strong driver optimization and high geometry throughput, both areas where Maxwell 2.0 excelled in its era. The M6000's 192 TMUs and 96 ROPs provide far more rasterization headroom than the Radeon's 80 TMUs and 32 ROPs, which likely explains the magnitude of the win.

Interestingly, the AMD card's best showing comes in a benchmark the M6000 does not have a recorded score for: Geekbench Metal, where the Radeon Pro 5300 scores 48,070. That number is higher than the M6000's Vulkan score of 46,913, which suggests the AMD part is well-optimized for Apple's API. Since the database lists no Metal score for the Quadro, this cannot be compared directly, but it does indicate that the Radeon's strengths lie in Apple-centric workloads.

Overall, the head-to-head record is 2 wins for the NVIDIA Quadro M6000 and 0 wins for the AMD Radeon Pro 5300 in tests where both have scores. The average benchmark score reinforces this: 43,301 for the M6000 versus 40,870 for the Radeon, a difference of roughly 5.9%.

Specification Differences

The two cards differ in nearly every major specification category. The process node is 28 nm for NVIDIA versus 7 nm for AMD, with the M6000's die size at 601 mm² and the Radeon's at 158 mm². Transistor counts are 8,000 million versus 6,400 million, and transistor density is 13.3M/mm² versus 40.5M/mm².

Clock speeds diverge significantly. The M6000 has a base clock of 988 MHz and a boost of 1114 MHz, while the Radeon Pro 5300 has a base of 1000 MHz and a boost of 1650 MHz. Memory clocks also differ: the M6000 runs at 1653 MHz (6.6 Gbps effective), while the Radeon runs at 1750 MHz (14 Gbps effective).

Memory configuration is a major differentiator. The M6000 has 12 GB of GDDR5 on a 384-bit bus with 317.4 GB/s bandwidth. The Radeon Pro 5300 has 4 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The shading unit count is 3,072 versus 1,280, TMUs are 192 versus 80, and ROPs are 96 versus 32.

Pixel and texture rates follow suit. The M6000 offers 106.9 GPixel/s and 213.9 GTexel/s, while the Radeon Pro 5300 offers 52.80 GPixel/s and 132.0 GTexel/s. FP32 performance is 6.844 TFLOPS versus 4.224 TFLOPS, with the Radeon adding FP16 at 8.448 TFLOPS (2:1) where the M6000 has none.

Power and physical specifications are also starkly different. The M6000 has a TDP of 250 W, requires a 600 W PSU, uses a dual-slot cooler, and takes a single 8-pin power connector. The Radeon Pro 5300 has an 85 W TDP, suggests a 250 W PSU, is an IGP (integrated graphics processor) with no power connectors, and measures no listed dimensions. The bus interface is PCIe 3.0 x16 for the M6000 versus PCIe 4.0 x8 for the Radeon. Display outputs are 1x DVI and 4x DisplayPort 1.2 on the NVIDIA, while the AMD has no outputs at all.

Both cards support DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The M6000 measures 267 mm in length and 111 mm in height. The Radeon Pro 5300 lists no dimensions.

Where Each One Wins

The NVIDIA Quadro M6000 wins in scenarios that demand raw compute throughput and legacy API performance. Its 31.1% Vulkan lead over the Radeon Pro 5300 makes it the clear choice for Vulkan-based rendering engines and game development workloads. The 2.4% OpenCL advantage, combined with triple the memory capacity (12 GB vs. 4 GB) and 41% more memory bandwidth (317.4 GB/s vs. 224.0 GB/s), positions it well for large dataset processing and multi-tasking in professional applications. The M6000 also has a 84th percentile ranking versus the Radeon's 82nd, and its average score of 43,301 sits 5.9% higher than the Radeon's 40,870.

The AMD Radeon Pro 5300 wins in efficiency-critical and Apple-ecosystem scenarios. Its 85 W TDP is less than a third of the M6000's 250 W, making it suitable for compact systems where power and heat are constrained. The card's 48,070 Metal score indicates strong performance in macOS applications that leverage Metal, though no direct comparison exists for the M6000. The Radeon also offers FP16 support at 8.448 TFLOPS, which can benefit workloads that use mixed-precision arithmetic, a feature entirely absent on the Maxwell-based NVIDIA card.

For users choosing between these two, the decision hinges on the software environment. The M6000 is superior for Vulkan development, OpenCL compute, and any task that benefits from more VRAM. The Radeon Pro 5300 is better suited for Apple-centric workflows, power-constrained builds, and applications that can exploit FP16 acceleration. The data is unambiguous about the overall compute winner, the Quadro M6000 takes both shared benchmarks, but the Radeon's Metal performance and efficiency profile carve out a legitimate niche.