AMD FirePro W4100 vs AMD Radeon R7 M365X Comparison

Head-to-Head Benchmarks

The benchmark data splits sharply between the two recorded workloads. The AMD Radeon R7 M365X takes the OpenCL test, while the AMD FirePro W4100 dominates the Vulkan test with a decisive margin.

In Geekbench OpenCL, the Radeon R7 M365X scores 5939 against the FirePro W4100's 5478. That is a 7.8% advantage for the Radeon, a clear but not overwhelming lead. The R7 M365X posts a higher raw compute score in this workload, and the delta of -7.8% (expressed from the FirePro's perspective) confirms the direction of the result. Interestingly, the R7 M365X's OpenCL score of 5939 also places it above its own average benchmark score of 5416, indicating this test represents a strong showing for the mobile part.

The Vulkan result flips the outcome dramatically. The FirePro W4100 scores 6496, versus 4893 for the R7 M365X. That is a 32.8% advantage for the FirePro, a substantial gap. The FirePro's Vulkan score is also its stronger of the two recorded benchmarks, exceeding its OpenCL score by over 1000 points. The R7 M365X, by contrast, drops off significantly in Vulkan, scoring over 1000 points below its OpenCL figure.

Each card wins one benchmark, but the magnitude of the wins is asymmetric. The R7 M365X's OpenCL victory is modest at 7.8%, while the FirePro's Vulkan victory is massive at 32.8%. In terms of average benchmark score across both tests, the FirePro W4100 lands at 5987, while the R7 M365X averages 5416. That puts the FirePro roughly 10.5% ahead on the aggregate metric, a figure derived directly from the recorded averages.

The percentile rankings reinforce this. The FirePro W4100 sits at the 34th percentile of all GPUs in the database, while the R7 M365X sits at the 32nd percentile. These are close positions, but the FirePro edges ahead. Looking at nearest rivals, the FirePro W4100's average score of 5987 places it within 0.2% of the NVIDIA RTX PRO 6000 Blackwell Server (5996) and essentially tied with the NVIDIA Quadro K4000M (5986) and NVIDIA Quadro K4000 (5982). The R7 M365X's average of 5416 puts it 0.5% behind the AMD Radeon 610M (5444), 0.9% ahead of the Intel UHD Graphics P630 (5370), and 1.1% ahead of the AMD Radeon R7 M445 (5358).

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD FirePro W4100 has an average benchmark score of 5987, compared to 5416 for the AMD Radeon R7 M365X. The FirePro also ranks at the 34th percentile of all GPUs, versus the 32nd percentile for the Radeon.

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

A: The AMD Radeon R7 M365X wins the Geekbench OpenCL test with a score of 5939, which is 7.8% higher than the FirePro W4100's score of 5478. This is the Radeon's strongest recorded result.

Q: What happens in the Vulkan benchmark?

A: The AMD FirePro W4100 wins decisively, scoring 6496 against 4893 for the Radeon R7 M365X. The FirePro's advantage is 32.8%, a much larger margin than the Radeon's OpenCL lead.

Q: Which card has more shading units?

A: The AMD FirePro W4100 has 512 shading units, while the AMD Radeon R7 M365X has 384 shading units. The FirePro also has more texture mapping units (32 versus 24) and more render output units (16 versus 8).

Q: Do the two GPUs support the same graphics APIs?

A: Yes, both cards list identical API support: DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. The differences in benchmark performance are therefore not attributable to API capability gaps.

Q: How does the memory configuration differ?

A: The FirePro W4100 has 2 GB of GDDR5 memory, while the R7 M365X has 1024 MB (1 GB) of GDDR5 memory. Both use a 128-bit bus and achieve 64.00 GB/s of bandwidth, and both run their memory at 1000 MHz (4 Gbps effective).

The Verdict

The data points to the AMD FirePro W4100 as the stronger overall product, despite losing one benchmark. Its average score of 5987 versus 5416 for the Radeon R7 M365X is a meaningful gap. The FirePro's Vulkan win is the single largest delta between the two parts, and that result alone outweighs the Radeon's smaller OpenCL advantage. The FirePro also holds a higher percentile ranking (34th versus 32nd) and sits alongside much more powerful rivals in the database, including the NVIDIA RTX PRO 6000 Blackwell Server and the Quadro K4000 series.

The Radeon R7 M365X is not without merit. Its OpenCL score of 5939 is genuinely competitive, and it outperforms its own average by a wide margin. For workloads that rely on OpenCL compute, the Radeon is the better choice. However, the overall benchmark profile favors the FirePro. The 2 GB memory capacity, the double render output count, and the superior average score all support this conclusion. For a user choosing between these two end-of-life parts, the database suggests the FirePro W4100 for general and Vulkan-oriented tasks, and the R7 M365X specifically for OpenCL-centric workloads.

Specification Differences

The two cards share several core specifications but diverge on key compute and memory resources. Both are built on a 28 nm process at TSMC, both use GCN 1.0 architecture, and both feature GDDR5 memory at 1000 MHz with a 128-bit bus and 64.00 GB/s bandwidth. Their API support is identical: DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170.

The differences start with the GPU chip itself. The FirePro W4100 uses the Cape Verde chip with 1,500 million transistors on a 123 mm² die. The R7 M365X uses the Litho chip with 950 million transistors on a 77 mm² die. Transistor density is nearly identical (12.2M per mm² versus 12.3M per mm²), but the FirePro packs far more hardware.

Compute resources differ substantially. The FirePro W4100 has 512 shading units, 32 texture mapping units, and 16 render output units. The R7 M365X has 384 shading units, 24 texture mapping units, and only 8 render output units. This translates into higher theoretical rates for the FirePro: 10.08 GPixel/s pixel rate and 20.16 GTexel/s texture rate, versus 6.600 GPixel/s and 19.80 GTexel/s for the Radeon. Floating-point performance is close, with the FirePro at 645.1 GFLOPS and the Radeon at 633.6 GFLOPS.

Memory capacity differs: the FirePro has 2 GB, the Radeon has 1024 MB. The bus interface also differs, with the FirePro using PCIe 3.0 x16 and the Radeon using PCIe 3.0 x8. The FirePro is a single-slot card with no power connectors and a 250 W suggested PSU, while the Radeon lists no dimensions, power connectors, or PSU recommendation. The FirePro measures 171 mm in length and 69 mm in height, and offers 4x mini-DisplayPort 1.2 outputs. The Radeon lists no display outputs.

Architecture Differences

Both GPUs share the same GCN 1.0 architecture and 28 nm TSMC manufacturing process, but they are built around different chips with different transistor budgets. The FirePro W4100's Cape Verde chip contains 1,500 million transistors on a 123 mm² die. The R7 M365X's Litho chip contains 950 million transistors on a 77 mm² die. The FirePro's chip is roughly 60% larger in transistor count and 60% larger in die area, which explains its higher resource counts.

The FirePro W4100 belongs to the FirePro GCN (Wx100) generation, released on August 12, 2014. Its predecessor is FirePro Terascale and its successor is Radeon Pro Polaris. The R7 M365X belongs to the Gem System (R7 M300) generation, released on May 4, 2015. Its predecessor is Solar System and its successor is Polaris Mobile. Both are marked as end-of-life production status.

The shading architecture scales with the chip difference. The FirePro's 512 shading units, 32 TMUs, and 16 ROPs represent a full implementation of the Cape Verde design. The R7 M365X's 384 shading units, 24 TMUs, and 8 ROPs represent a cut-down configuration of the smaller Litho chip. The ROP difference is particularly notable: the FirePro has exactly double the render output units, which directly explains its higher pixel rate of 10.08 GPixel/s versus 6.600 GPixel/s.

The memory subsystem is architecturally similar, with both cards using a 128-bit GDDR5 interface at 1000 MHz for 64.00 GB/s bandwidth. The FirePro doubles the capacity to 2 GB, while the R7 M365X stays at 1024 MB. The FirePro also gets a full PCIe 3.0 x16 interface, while the Radeon is limited to PCIe 3.0 x8. Neither card's architecture includes dedicated ray tracing or tensor cores, consistent with their GCN 1.0 heritage.

Where Each One Wins

The AMD FirePro W4100 wins in the Vulkan benchmark by a 32.8% margin, making it the clear choice for any workload that exercises the Vulkan API. Its 2 GB memory capacity, double ROP count, and higher pixel rate also give it advantages in tasks that require higher fill rates or larger working sets. The FirePro's average benchmark score of 5987 and 34th percentile ranking place it ahead of the Radeon in the database's overall hierarchy. Its 16 render output units versus 8 for the Radeon suggest better performance in scenarios that are fill-rate limited, such as high-resolution rendering or heavy post-processing effects.

The AMD Radeon R7 M365X wins the OpenCL benchmark, scoring 5939 versus 5478 for the FirePro. That 7.8% advantage makes it the better choice for OpenCL compute workloads. The Radeon also achieves this with fewer shading units (384 versus 512) and fewer TMUs (24 versus 32), indicating that its OpenCL result benefits from factors other than raw hardware count. Its FP32 performance of 633.6 GFLOPS is only 1.8% behind the FirePro's 645.1 GFLOPS, which is a remarkably small gap given the hardware differences. For users running OpenCL-based applications, the Radeon's higher score is the deciding factor.

The two cards split their benchmark wins exactly one apiece, but the magnitude of those wins dictates the overall recommendation. The FirePro's 32.8% Vulkan lead is more than four times larger than the Radeon's 7.8% OpenCL lead. When averaged across both tests, the FirePro comes out ahead by roughly 10.5%. The FirePro also matches or exceeds the Radeon in every specification category except the raw OpenCL score and transistor density (where the Radeon is marginally ahead at 12.3M per mm² versus 12.2M per mm²). The database's verdict is clear: the FirePro W4100 is the more capable GPU overall, while the R7 M365X serves a narrower niche for OpenCL-focused applications.