AMD Radeon Pro WX 5100 vs NVIDIA GeForce GTX 675MX Comparison

The AMD Radeon Pro WX 5100 and NVIDIA GeForce GTX 675MX represent two very different eras of GPU design, separated by four years of architectural evolution. Benchmark data shows the WX 5100 holds a commanding lead in every measurable compute and graphics workload, with an average benchmark score of 8863 compared to the GTX 675MX's 8427. The WX 5100 also sits at the 44th percentile of all GPUs, while the GTX 675MX trails at the 43rd percentile. Despite the modest percentile gap, the raw performance delta in head-to-head tests is massive, driven by fundamental differences in architecture, manufacturing process, and feature support.

The Verdict

The data makes the choice unambiguous for most users: the AMD Radeon Pro WX 5100 is the superior performer in every benchmark category where both cards have results. In Geekbench Metal, the WX 5100 scores 29003 against the GTX 675MX's 6131, a 373.1% advantage. In Geekbench OpenCL, the WX 5100's 24217 dwarfs the GTX 675MX's 10723, representing a 125.8% lead. For any workload leveraging these APIs, the WX 5100 delivers more than double the performance.

The GTX 675MX's only arguable advantage is its lower power draw relative to its age, but even that is not supported by the data — the WX 5100 has a 75 W TDP versus the GTX 675MX's 100 W. The WX 5100 also offers 8 GB of GDDR5 memory versus 2 GB, a fourfold capacity increase that matters for modern workloads. The GTX 675MX is a mobile MXM module with "Portable Device Dependent" display outputs, making it unsuitable for desktop use without proprietary hardware. The WX 5100, by contrast, is a single-slot desktop card with four DisplayPort 1.4a outputs.

For users with legacy systems requiring an MXM-B (3.0) form factor, the GTX 675MX remains the only option of the two. However, for anyone building or upgrading a desktop workstation, the WX 5100 is the clear choice based on every benchmark score, memory capacity, and power efficiency metric available. The GTX 675MX's nearest rivals include the AMD Radeon 880M (deltaPct -0.1%) and NVIDIA GeForce MX330 (deltaPct -0.4%), placing it in the low-end mobile segment, while the WX 5100 competes with the AMD Radeon R9 M265X (deltaPct 0.1%) and NVIDIA GeForce RTX 3050 A Mobile (deltaPct 1.3%).

Architecture Differences

The architectural gap between these two GPUs is generational. The WX 5100 is built on AMD's GCN 4.0 architecture using the Ellesmere chip, fabricated on a 14 nm process at GlobalFoundries. The GTX 675MX uses NVIDIA's Kepler architecture with the GK104 chip, manufactured on a 28 nm process at TSMC. The process node difference is stark: 14 nm versus 28 nm, which directly impacts transistor density. The WX 5100 packs 5,700 million transistors into a 232 mm² die, yielding a density of 24.6 million transistors per square millimeter. The GTX 675MX contains 3,540 million transistors spread across a larger 294 mm² die, resulting in just 12.0 million transistors per square millimeter.

This density advantage translates into raw compute resources. The WX 5100 has 1792 shading units, 112 texture mapping units, and 32 ROPs. The GTX 675MX has 960 shading units, 80 TMUs, and 32 ROPs. The WX 5100's shading unit count is nearly double, and its TMU count is 40% higher. The FP32 compute throughput reflects this: the WX 5100 delivers 3.892 TFLOPS versus the GTX 675MX's 1,255.7 GFLOPS (approximately 1.26 TFLOPS). The WX 5100 also supports FP16 at a 1:1 ratio (3.892 TFLOPS), while the GTX 675MX has no FP16 capability listed.

Memory architecture differs significantly as well. The WX 5100 uses 8 GB of GDDR5 on a 256-bit bus with 160.0 GB/s bandwidth, running at an effective 5 Gbps. The GTX 675MX has 2 GB of GDDR5 on the same 256-bit bus but at only 115.2 GB/s bandwidth, with memory clocked at 3.6 Gbps effective. The WX 5100's memory bandwidth is 39% higher, and its capacity is four times larger. Pixel and texture fill rates follow the same pattern: the WX 5100 achieves 34.75 GPixel/s and 121.6 GTexel/s, while the GTX 675MX manages 13.08 GPixel/s and 52.32 GTexel/s.

Head-to-Head Benchmarks

The head-to-head benchmark data shows a complete sweep for the AMD Radeon Pro WX 5100, winning both tests with enormous margins. The Geekbench Metal test is the most lopsided: the WX 5100 scores 29003 against the GTX 675MX's 6131, a 373.1% delta. This test likely leverages the WX 5100's modern architecture features and larger memory pool. The GTX 675MX's Metal score of 6131 is less than a quarter of the WX 5100's, indicating fundamental limitations in the Kepler architecture's ability to handle modern compute workloads efficiently.

The Geekbench OpenCL test shows a narrower but still decisive gap. The WX 5100 scores 24217, while the GTX 675MX scores 10723, a 125.8% difference. This means the WX 5100 is more than twice as fast in OpenCL compute. The delta is smaller than Metal because OpenCL is more mature across both architectures, but the WX 5100's superior shading unit count and memory bandwidth still produce a dominant result. The GTX 675MX's OpenCL score is actually its better result relative to its Metal score, suggesting Kepler handles OpenCL more efficiently than Metal, but it still falls far short of the WX 5100.

Beyond these two head-to-head tests, the WX 5100 has additional benchmark data that the GTX 675MX lacks entirely. The WX 5100 scores 26909 in Geekbench Vulkan, demonstrating strong modern API support. Its Passmark results include 5496 in G3D, 2053 in GPU compute, 777 in G2D, and DirectX scores of 88 (DX9), 36 (DX11), 29 (DX10), and 26 (DX12). The GTX 675MX has no equivalent scores in these tests, meaning its overall average of 8427 is computed from just two benchmarks, while the WX 5100's 8863 average spans ten tests. This makes the WX 5100's lead more impressive — it maintains a higher average while being tested across a broader and more demanding benchmark suite.

Specification Differences

The two cards differ across nearly every specification field. Process node: 14 nm (WX 5100) versus 28 nm (GTX 675MX). Transistor count: 5,700 million versus 3,540 million. Die size: 232 mm² versus 294 mm². Transistor density: 24.6M per mm² versus 12.0M per mm². The WX 5100 has a base clock of 713 MHz and boost clock of 1086 MHz, while the GTX 675MX has no clock data listed. Memory clock is 1250 MHz (5 Gbps effective) versus 900 MHz (3.6 Gbps effective).

Memory capacity: 8 GB versus 2 GB, both GDDR5 with 256-bit buses. Bandwidth: 160.0 GB/s versus 115.2 GB/s. Shading units: 1792 versus 960. TMUs: 112 versus 80. ROPs are equal at 32. Pixel rate: 34.75 GPixel/s versus 13.08 GPixel/s. Texture rate: 121.6 GTexel/s versus 52.32 GTexel/s. FP32: 3.892 TFLOPS versus 1,255.7 GFLOPS. FP16: 3.892 TFLOPS (1:1) versus not listed.

TDP: 75 W versus 100 W. Slot width: Single-slot versus MXM Module. Power connectors: None for both, but the WX 5100 lists a suggested PSU of 250 W, while the GTX 675MX has none. Bus interface: PCIe 3.0 x16 versus MXM-B (3.0). Display outputs: 4x DisplayPort 1.4a versus Portable Device Dependent. API support: DirectX 12 (12_0) versus 12 (11_0), OpenGL 4.6 for both, Vulkan 1.3 versus 1.2.175. Release dates: 2016-11-17 versus 2012-09-30. The WX 5100 lists a launch MSRP of 499 USD; the GTX 675MX has none. Dimensions: the WX 5100 is 173 mm (6.8 inches) long and 112 mm (4.4 inches) high; the GTX 675MX has no dimensions listed.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon Pro WX 5100 has an average benchmark score of 8863, compared to the NVIDIA GeForce GTX 675MX's 8427. The WX 5100 also ranks at the 44th percentile of all GPUs, one point higher than the GTX 675MX's 43rd percentile.

Q: How much faster is the WX 5100 in Geekbench Metal?

A: The WX 5100 scores 29003 in Geekbench Metal, while the GTX 675MX scores 6131. This represents a 373.1% delta, making the WX 5100 nearly five times faster in this specific test.

Q: What is the memory capacity difference between the two cards?

A: The WX 5100 has 8 GB of GDDR5 memory, while the GTX 675MX has 2 GB. Both use a 256-bit memory bus, but the WX 5100 achieves 160.0 GB/s bandwidth versus the GTX 675MX's 115.2 GB/s.

Q: Which card has a higher TDP?

A: The GTX 675MX has a higher TDP of 100 W, while the WX 5100 has a 75 W TDP. Despite drawing less power, the WX 5100 delivers significantly higher performance, with 3.892 TFLOPS FP32 versus 1,255.7 GFLOPS.

Q: What are the nearest rivals for each card based on average score?

A: The WX 5100's nearest rival is the AMD Radeon R9 M265X with an average score of 8851 (deltaPct 0.1%). The GTX 675MX's nearest rival is the AMD Radeon 880M with an average score of 8436 (deltaPct -0.1%). The WX 5100 also sits near the NVIDIA GeForce RTX 3050 A Mobile (8746, deltaPct 1.3%) and NVIDIA GeForce GTX 460 v2 (8743, deltaPct 1.4%).

Q: Do both cards support the same DirectX version?

A: No. The WX 5100 supports DirectX 12 (12_0), while the GTX 675MX supports DirectX 12 (11_0). Both support OpenGL 4.6, but the WX 5100 supports Vulkan 1.3 versus the GTX 675MX's Vulkan 1.2.175.