AMD Radeon 890M vs NVIDIA GeForce GTX 675MX Comparison

The comparison between the NVIDIA GeForce GTX 675MX and the AMD Radeon 890M is a study in generational contrast, pitting a 2012-era mobile discrete GPU against a 2024 integrated graphics processor. The data shows a decisive victory for the AMD part, driven by massive architectural and process-node advantages. While the GTX 675MX was a capable part in its day, the Radeon 890M’s modern design delivers performance that eclipses the older NVIDIA GPU in every measurable benchmark.

Head-to-Head Benchmarks

The only directly comparable benchmark in the data is the Geekbench OpenCL test, and the result is not close. The AMD Radeon 890M scores 37,254 points, while the NVIDIA GeForce GTX 675MX scores 10,723 points. This represents a 71.2% advantage for the AMD part, meaning the Radeon 890M achieves roughly 3.5 times the compute performance of the GTX 675MX in this workload.

This single result encapsulates the entire performance relationship. The AMD Radeon 890M’s average benchmark score across all tests is 9,210, placing it in the 45th percentile of all GPUs. The GTX 675MX, by contrast, has an average score of 8,427, sitting in the 43rd percentile. While the percentile gap appears narrow, the OpenCL delta reveals the true scale of the difference in raw compute throughput. The GTX 675MX’s nearest rivals include the AMD Radeon 880M (scoring 8,436, a -0.1% delta) and the NVIDIA GeForce MX330 (scoring 8,458, a -0.4% delta), placing it in a performance tier that the Radeon 890M simply bypasses.

The Radeon 890M’s other benchmark results are not directly comparable to the GTX 675MX, but they show a well-rounded part. In Vulkan, it scores 40,808, and in 3DMark Steel Nomad DX12, it scores 590. Its Passmark results show a G3D score of 8,076 and a GPU Compute score of 4,157. The GTX 675MX has no corresponding data in these tests, so cross-verification is limited, but the OpenCL test alone is sufficient to establish the hierarchy.

The data indicates zero benchmark wins for the NVIDIA part and one decisive win for the AMD part. This is not a nuanced rivalry; it is a clear generational leap. The GTX 675MX’s closest competitor in the data, the AMD Radeon R9 M375X (scoring 8,325, a 1.2% delta), shows that the older NVIDIA GPU is locked into a performance bracket that the Radeon 890M far exceeds.

FAQ

Q: How much faster is the AMD Radeon 890M than the NVIDIA GeForce GTX 675MX in compute workloads?

A: In the Geekbench OpenCL test, the Radeon 890M scores 37,254 versus the GTX 675MX’s 10,723, a 71.2% advantage for the AMD part.

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon 890M has an average benchmark score of 9,210, while the NVIDIA GeForce GTX 675MX averages 8,427. This places the Radeon 890M in the 45th percentile of all GPUs, compared to the GTX 675MX’s 43rd percentile.

Q: What is the memory configuration of each GPU?

A: The NVIDIA GeForce GTX 675MX uses 2 GB of GDDR5 memory on a 256-bit bus, providing 115.2 GB/s of bandwidth. The AMD Radeon 890M uses System Shared memory, with its bandwidth listed as System Dependent.

Q: How do the pixel and texture rates compare?

A: The AMD Radeon 890M has a pixel rate of 92.80 GPixel/s and a texture rate of 185.6 GTexel/s. The NVIDIA GeForce GTX 675MX has a pixel rate of 13.08 GPixel/s and a texture rate of 52.32 GTexel/s.

Q: What are the API support differences between the two?

A: The NVIDIA GeForce GTX 675MX supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The AMD Radeon 890M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: Which GPU is more power-efficient?

A: The AMD Radeon 890M has a TDP of 15 W, while the NVIDIA GeForce GTX 675MX has a TDP of 100 W. The Radeon 890M delivers far higher performance at a fraction of the power draw.

Architecture Differences

The architectural gap between these two GPUs is vast, spanning over a decade of development. The NVIDIA GeForce GTX 675MX is built on the Kepler architecture, using the GK104 chip, fabricated on a 28 nm process at TSMC. It contains 3,540 million transistors on a 294 mm² die, resulting in a transistor density of 12.0M / mm². The AMD Radeon 890M, in contrast, uses the RDNA 3.5 architecture with the Strix Point chip, built on a 4 nm process, also at TSMC. It packs 34,000 million transistors into a 233 mm² die, achieving a density of 145.9M / mm². This represents a more than twelvefold increase in transistor density, which is the primary driver of the Radeon 890M’s superior performance.

The compute configurations differ significantly. The GTX 675MX has 960 shading units, 80 texture mapping units (TMUs), and 32 raster operation pipelines (ROPs). The Radeon 890M has 1,024 shading units, 64 TMUs, and 32 ROPs, but it also includes 16 ray tracing cores, a feature entirely absent from the Kepler architecture. The raw compute output reflects this: the Radeon 890M delivers 5.939 TFLOPS of FP32 performance, compared to the GTX 675MX’s 1,255.7 GFLOPS. The AMD part also supports FP16 at a 1:1 ratio, while the NVIDIA GPU has no listed FP16 capability.

Memory technology is another major divergence. The GTX 675MX relies on dedicated 2 GB of GDDR5 memory with a 256-bit interface, yielding 115.2 GB/s of bandwidth. The Radeon 890M uses System Shared memory, with the bus width and bandwidth listed as System Dependent. This means the Radeon 890M’s memory performance scales with the host system’s RAM, whereas the GTX 675MX has fixed, dedicated resources. In terms of form factor, the GTX 675MX is an MXM Module with an MXM-B (3.0) interface, while the Radeon 890M is an IGP (integrated graphics processor) using PCIe 4.0 x8.

The process node advantage is also reflected in power consumption. The GTX 675MX has a TDP of 100 W, while the Radeon 890M draws just 15 W. This sevenfold reduction in power draw, combined with the massive performance increase, highlights the efficiency gains of modern chip manufacturing. The Radeon 890M’s clock behavior is also different, with a base clock of 400 MHz and a boost clock of 2,900 MHz, while the GTX 675MX lists only a memory clock of 900 MHz (or 3.6 Gbps effective).

The Verdict

The data is unambiguous: the AMD Radeon 890M is the superior GPU in every measurable aspect. Its 71.2% lead in OpenCL performance, its 5.939 TFLOPS FP32 output versus the GTX 675MX’s 1,255.7 GFLOPS, and its dramatically higher pixel and texture rates all point to a modern processor that outperforms the legacy NVIDIA part by a wide margin.

Who should pick the NVIDIA GeForce GTX 675MX? The data suggests almost no one, except perhaps those constrained to a legacy platform with an MXM slot and a need for the older GPU’s specific API profile (DirectX 12 (11_0) and Vulkan 1.2.175). Its 2 GB of dedicated GDDR5 memory could be an advantage in scenarios where system RAM is limited, but this is a niche consideration.

Who should pick the AMD Radeon 890M? The data is clear: anyone seeking the best available performance from an integrated GPU. Its 45th percentile standing among all GPUs, its 15 W TDP, and its support for DirectX 12 Ultimate (12_2) and Vulkan 1.4 make it the logical choice for modern mobile systems. The Radeon 890M’s ray tracing cores and FP16 support also future-proof it for workloads that the GTX 675MX cannot handle. In this matchup, the Radeon 890M is the definitive winner, and the GTX 675MX is best relegated to historical interest.

Specification Differences

| Field | NVIDIA GeForce GTX 675MX | AMD Radeon 890M |

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

| Architecture | Kepler | RDNA 3.5 |

| Process Node | 28 nm | 4 nm |

| Transistors | 3,540 million | 34,000 million |

| Die Size | 294 mm² | 233 mm² |

| Transistor Density | 12.0M / mm² | 145.9M / mm² |

| Shading Units | 960 | 1,024 |

| TMUs | 80 | 64 |

| ROPs | 32 | 32 |

| RT Cores | None | 16 |

| Pixel Rate | 13.08 GPixel/s | 92.80 GPixel/s |

| Texture Rate | 52.32 GTexel/s | 185.6 GTexel/s |

| FP32 | 1,255.7 GFLOPS | 5.939 TFLOPS |

| FP16 | None | 5.939 TFLOPS (1:1) |

| TDP | 100 W | 15 W |

| Memory Size | 2 GB | System Shared |

| Memory Type | GDDR5 | System Shared |

| Memory Bus Width | 256 bit | System Shared |

| Memory Bandwidth | 115.2 GB/s | System Dependent |

| Memory Clock | 900 MHz (3.6 Gbps effective) | System Shared |

| Slot Width | MXM Module | IGP |

| Bus Interface | MXM-B (3.0) | PCIe 4.0 x8 |

| DirectX | 12 (11_0) | 12 Ultimate (12_2) |

| Vulkan | 1.2.175 | 1.4 |

| Production Status | End-of-life | Active |

| Release Date | 2012-09-30 | 2024-07-14 |