AMD Radeon R7 M460 vs AMD Radeon RX 6400 Comparison
AMD Radeon R7 M460
Radeon RX 6400
PERFORMANCE BENCHMARKS
Analysis: AMD Radeon R7 M460 vs AMD Radeon RX 6400
# Head-to-Head Benchmarks
The recorded data places the AMD Radeon R7 M460 and the AMD Radeon RX 6400 in separate performance tiers. Across the available benchmark database, the two GPUs share only a single common recorded workload, the Geekbench OpenCL test, which makes the comparison straightforward but narrow.
In that OpenCL test, the Radeon RX 6400 scores 32,011 points, while the Radeon R7 M460 scores 6,612 points. The delta is 25,399 points, which translates to a 79.3% deficit for the older part. The RX 6400 is the clear winner in this workload, and the margin is substantial enough to classify these products into completely different market segments.
FAQ
Q: How does the AMD Radeon R7 M460 compare to the AMD Radeon RX 6400 in raw performance?
A: In the only directly comparable recorded benchmark, the Geekbench OpenCL test, the Radeon RX 6400 achieves a score of 32,011 versus 6,612 for the Radeon R7 M460. This gives the RX 6400 a 79.3% advantage. The R7 M460 additionally records a 38th percentile ranking among all GPUs, while the RX 6400 sits at the 35th percentile.
Q: Which GPU has the higher memory bandwidth?
A: The Radeon RX 6400 has a memory bandwidth of 128.0 GB/s over a 64-bit bus with 4 GB GDDR6 memory. The Radeon R7 M460 has 36.00 GB/s bandwidth from 2 GB of GDDR5 on a 64-bit bus. The RX 6400 offers more than triple the memory bandwidth.
Q: Are there architectural differences between the two?
A: Yes. The Radeon R7 M460 is built on the GCN 3.0 architecture using a 28 nm process at TSMC, with 1,550 million transistors on a 125 mm² die. The Radeon RX 6400 uses the RDNA 2.0 architecture, a 6 nm process at TSMC, and packs 5,400 million transistors into a 107 mm² die. The R7 M460 has 384 shaders, 24 texture units and 8 ROPs, while the RX 6400 doubles those counts to 768 shaders, 48 TMUs and 32 ROPs.
Q: Which GPU has the higher clock speed?
A: The Radeon RX 6400 runs at a base clock of 1923 MHz and a boost clock of 2321 MHz. The Radeon R7 M460 has a base clock of 730 MHz and a boost clock of 1024 MHz. The RX 6400 has a significant clock advantage in both base and boost states.
Q: What is the latest API support?
A: The Radeon RX 6400 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The older R7 M460 supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.2.170. The newer part is ahead in the DirectX and Vulkan feature sets.
Q: What are the power requirements?
A: The Radeon RX 6400 has a 53 W TDP and requires no power connectors, with a recommended 250 W PSU. Power figures for the R7 M460 are not listed in the record, and neither is a power connector specification.
Architecture Differences
The two GPUs represent two different AMD design eras. The Radeon R7 M460 uses the GCN 3.0 architecture (the "Meso" chip, "Gem System" family, R400 series), built on TSMC's 28 nm process. It packs 1,550 million transistors on a 125 mm² die, which yields a transistor density of 12.4 million per mm². The RX 6400 is a Navi 2x product, using the RDNA 2.0 architecture (the "Navi II" generation) on TSMC's 6 nm node. It has 5,400 million transistors on a 107 mm² die, a density of 50.5 million per mm².
These architectural changes are visible in the raw execution resources. The R7 M460 has 384 shading units, 24 texture mapping units, and 8 render output units. The RX 6400 doubles all three: 768 shaders, 48 TMUs, and 32 ROPs. The RX 6400 also adds 12 ray tracing cores, a feature that the GCN-based M460 does not have. The Radeon RX 6400 comes with 12 ray tracing cores, a feature entirely absent from the older GPU.
The memory subsystem also diverges. The Radeon R7 M460 uses 2 GB of GDDR5 on a 64-bit bus for 36.00 GB/s. The RX 6400 moves to 4 GB of GDDR6 on the same 64-bit bus, doubling the capacity and lifting bandwidth to 128.0 GB/s. Pixel and texture throughput follow the same pattern: the R7 M460 is rated for 8.192 GPixel/s and 24.58 GTexel/s, while the RX 6400 is rated for 74.27 GPixel/s and 111.4 GTexel/s.
Power characteristics are also a differentiator. The RX 6400 is listed with a 53 W TDP, single-slot cooler, no external power connectors, and a recommended 250 W power supply. The Radeon R7 M460 has no TDP or power data in the record, and no power connector value is listed.
The Verdict
The database shows a clear performance hierarchy. In the only shared workload, the Radeon RX 6400 beats the Radeon R7 M460 by 79.3%, a difference large enough to put them in different performance classes. The RX 6400 also carries more modern architecture (RDNA 2.0 vs GCN 3.0), a smaller process node (6 nm vs 28 nm), and doubles the execution units, memory capacity, and bandwidth.
The Radeon R7 M460 has one notable advantage: it is an older, established product with a mature driver stack, and it is the one with the lower power requirement in the tested workload. However, from a pure performance data standpoint, the Radeon RX 6400 is the stronger choice. It is also the only one of the two that adds ray tracing hardware, newer API feature sets, and more shader and texture resources. For scenarios where the R7 M460 is sufficient, it remains a usable part; for any workload that can use the RX 6400's full resources, the database data consistently favors the newer part.