AMD Radeon R8 M445DX vs NVIDIA GeForce GTX 760M Comparison

The Verdict

The benchmark data positions the NVIDIA GeForce GTX 760M as the clear performance leader between these two mobile graphics solutions. In the only direct head-to-head test recorded, the GeForce OpenCL benchmark, the GTX 760M scores 5,604 points against the AMD Radeon R8 M445DX's 4,727 points, a decisive 18.6% advantage. The GTX 760M also holds a higher average benchmark score of 5,236 compared to 4,727 for the AMD part, and it sits in the 31st percentile of all GPUs versus the 27th percentile for the Radeon.

For users prioritizing raw compute performance in a laptop, the data clearly favors the NVIDIA GeForce GTX 760M. It wins the sole benchmark comparison and outperforms the AMD Radeon R8 M445DX across every recorded metric. The AMD part, however, is an integrated graphics processor (IGP) with system-shared memory, which means its performance is inherently tied to the host system's memory configuration. The GTX 760M, with its dedicated 2 GB of GDDR5 memory and 64.13 GB/s of bandwidth, offers a more predictable and consistent performance profile.

The Radeon R8 M445DX should only be considered in systems where its integrated nature is a necessity, such as thin-and-light notebooks where a discrete GPU is not feasible. Even then, the data shows it is 18.6% behind in the recorded benchmark, a substantial gap. There is no benchmark category where the AMD part wins, so the verdict is straightforward: the GTX 760M is the superior choice for any workload measured in this database.

Where Each One Wins

The recorded data shows a single benchmark category: Geekbench OpenCL. In this test, the NVIDIA GeForce GTX 760M wins outright with a score of 5,604 against the AMD Radeon R8 M445DX's 4,727. This represents a win count of one for NVIDIA and zero for AMD. There are no other benchmark categories in the database where the AMD Radeon R8 M445DX achieves a higher score.

The GTX 760M also wins on the aggregate average benchmark score, posting 5,236 versus 4,727 for the Radeon. This means the NVIDIA part is roughly 10.8% ahead on its overall average, a figure derived from the database's recorded scores. The AMD part's average is identical to its single OpenCL score, confirming it has no other benchmark results that would change its standing.

In terms of percentile ranking, the GTX 760M sits at the 31st percentile of all GPUs, while the Radeon R8 M445DX sits at the 27th percentile. This places the NVIDIA part slightly higher in the overall performance distribution, even though both are in the lower third of all recorded GPUs. The data does not support any scenario where the AMD part wins, so the use-case split is one-sided: the GTX 760M is the choice for OpenCL compute workloads, and the Radeon has no recorded winning scenario.

Architecture Differences

The two GPUs come from different architectural lineages. The NVIDIA GeForce GTX 760M is built on the Kepler architecture using the GK106S chip, while the AMD Radeon R8 M445DX uses the GCN 3.0 architecture with the Meso chip. Both are fabricated on a 28 nm process at TSMC, but they differ significantly in transistor count and die size. The GTX 760M contains 2,540 million transistors on a 221 mm² die, resulting in a transistor density of 11.5 million per mm². The AMD part has 1,550 million transistors on a smaller 125 mm² die, giving it a higher density of 12.4 million per mm².

The execution resources differ markedly. The GTX 760M has 768 shading units, 64 texture mapping units (TMUs), and 16 raster output units (ROPs). The Radeon R8 M445DX has only 320 shading units, 20 TMUs, and 8 ROPs. This explains the substantial performance gap: the NVIDIA part has more than double the shading units and over three times the TMUs. The pixel rate for the GTX 760M is 11.50 GPixel/s versus 8.168 GPixel/s for the AMD part, and the texture rate is 46.02 GTexel/s versus 20.42 GTexel/s. FP32 compute is also higher on the NVIDIA side at 1,104.4 GFLOPS versus 653.4 GFLOPS.

Memory architecture is another key differentiator. The GTX 760M uses dedicated 2 GB of GDDR5 memory on a 128-bit bus, delivering 64.13 GB/s of bandwidth. The Radeon R8 M445DX uses system-shared memory, meaning its memory size, type, bus width, and bandwidth are all system-dependent. This is a fundamental architectural difference: the NVIDIA part has its own fast memory, while the AMD part relies on the host system's RAM. The GTX 760M also supports PCIe 3.0 x16, while the Radeon is an IGP with no separate bus interface.

API support shows a notable difference in DirectX versions. The GTX 760M supports DirectX 12 (11_0), while the Radeon R8 M445DX supports DirectX 12 (12_0), which is a newer feature level. Both support OpenGL 4.6, with Vulkan versions close at 1.2.175 for NVIDIA and 1.2.170 for AMD. The AMD part also lists FP16 compute at 653.4 GFLOPS with a 1:1 ratio, while the NVIDIA part does not list an FP16 figure.

FAQ

Q: Which GPU is faster in the recorded benchmarks?

A: The NVIDIA GeForce GTX 760M is faster. It scores 5,604 in Geekbench OpenCL versus 4,727 for the AMD Radeon R8 M445DX, a delta of 18.6%. The GTX 760M also has a higher average benchmark score of 5,236 versus 4,727.

Q: Does the AMD Radeon R8 M445DX win any benchmark category?

A: No. The data shows one head-to-head benchmark (Geekbench OpenCL) where the GTX 760M wins. The AMD part has zero recorded wins in any category.

Q: How do their memory configurations differ?

A: The GTX 760M has 2 GB of dedicated GDDR5 memory on a 128-bit bus with 64.13 GB/s bandwidth. The Radeon R8 M445DX uses system-shared memory, so its size, type, bus width, and bandwidth are all system-dependent.

Q: What are the core counts for each GPU?

A: The GTX 760M has 768 shading units, 64 TMUs, and 16 ROPs. The Radeon R8 M445DX has 320 shading units, 20 TMUs, and 8 ROPs.

Q: What is the DirectX support for each?

A: The GTX 760M supports DirectX 12 (11_0), while the Radeon R8 M445DX supports DirectX 12 (12_0). The AMD part has a newer feature level.

Q: What are the percentile ranks for these GPUs?

A: The GTX 760M is in the 31st percentile of all GPUs, while the Radeon R8 M445DX is in the 27th percentile.

Head-to-Head Benchmarks

The database records one direct comparison between these two GPUs: the Geekbench OpenCL test. The NVIDIA GeForce GTX 760M scores 5,604 points, while the AMD Radeon R8 M445DX scores 4,727 points. This is a delta of 18.6% in favor of NVIDIA. To put this in perspective, the GTX 760M's closest rival in the database is the NVIDIA Quadro 4000M with an average score of 5,211, a difference of just 0.5%. The AMD Radeon R8 M445DX's nearest rival is the AMD Radeon R5 M335 with an average score of 4,752, a difference of 0.5% in favor of the R5 M335.

The GTX 760M's OpenCL score of 5,604 is also notably higher than its own average benchmark score of 5,236, indicating that its best recorded result exceeds its mean performance. The Radeon R8 M445DX's OpenCL score of 4,727 is exactly equal to its average benchmark score, since it has no other recorded benchmarks. The 18.6% gap between the two in this test is substantial and consistent with the difference in their shading unit counts: 768 versus 320, a ratio of 2.4 to 1.

Looking at the nearest rivals for each GPU provides additional context. The GTX 760M is 0.5% ahead of the Quadro 4000M, 0.9% behind the GeForce 940M (which scores 5,284), and 1.3% behind the GeForce GTX 980M (which scores 5,308). The Radeon R8 M445DX is 0.5% behind the Radeon R5 M335, 0.9% ahead of the Quadro P400 (which scores 4,684), and 1.3% behind both the Radeon R5 M255 (4,788) and the GeForce RTX 3080 12 GB (4,791). This shows that the GTX 760M competes in a higher performance tier than the Radeon R8 M445DX, even when compared to their respective nearest rivals.

Specification Differences

The two GPUs differ in nearly every core specification. The NVIDIA GeForce GTX 760M uses the GK106S chip on the Kepler architecture, while the AMD Radeon R8 M445DX uses the Meso chip on GCN 3.0. Both are 28 nm parts from TSMC, but the GTX 760M has 2,540 million transistors on a 221 mm² die, versus 1,550 million on a 125 mm² die for the Radeon. Transistor density is slightly higher on the AMD part at 12.4M per mm² compared to 11.5M per mm².

Clock speeds differ. The GTX 760M has a base clock of 628 MHz and a boost clock of 719 MHz. The Radeon R8 M445DX has a higher base clock of 780 MHz and a boost clock of 1,021 MHz. Despite its higher clocks, the Radeon still trails significantly in compute throughput due to its lower core counts. The GTX 760M's memory runs at 1,002 MHz with 4 Gbps effective, while the Radeon's memory is system-shared.

Memory configuration is a major differentiator. The GTX 760M has 2 GB of GDDR5 on a 128-bit bus with 64.13 GB/s bandwidth. The Radeon R8 M445DX has system-shared memory with no fixed size, type, bus width, or bandwidth; all are system-dependent.

Core resource counts: the GTX 760M has 768 shading units, 64 TMUs, and 16 ROPs. The Radeon R8 M445DX has 320 shading units, 20 TMUs, and 8 ROPs. Pixel rate is 11.50 GPixel/s for NVIDIA versus 8.168 GPixel/s for AMD. Texture rate is 46.02 GTexel/s versus 20.42 GTexel/s. FP32 compute is 1,104.4 GFLOPS versus 653.4 GFLOPS. The AMD part lists FP16 at 653.4 GFLOPS with a 1:1 ratio, a feature not listed for the NVIDIA part.

Power and form factor differ as well. The GTX 760M has a TDP of 55 W and is an MXM Module with no power connectors. The Radeon R8 M445DX has no listed TDP and is an IGP. The GTX 760M uses a PCIe 3.0 x16 bus interface, while the Radeon is an IGP with no bus interface. Both have portable-device-dependent display outputs. API support: the GTX 760M supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The Radeon supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170. The GTX 760M was released on 2013-05-29 and is end-of-life, as is the Radeon, which was released on 2016-05-14.