AMD Instinct MI455X vs NVIDIA GeForce RTX 4060 Comparison

The Verdict

The AMD Instinct MI455X and the NVIDIA GeForce RTX 4060 serve entirely different purposes, and the database confirms this through their contrasting specifications and benchmark availability. The MI455X is a compute-oriented accelerator with no display outputs, no DirectX support, and a 2300 W power envelope; it is not designed for any consumer or gaming workload. The RTX 4060 is a conventional graphics card with a 115 W power draw, full display outputs, and a completed set of DirectX, OpenGL, and Vulkan API support. The data shows that the RTX 4060 is the only one of the two that can render graphics or run standard desktop workloads. The MI455X, with 32768 shading units and 432 GB of memory, is aimed at data-center compute tasks, though the database contains no benchmark scores for it. The RTX 4060 has an average benchmark score of 17639 and sits in the 61st percentile of all GPUs, while the MI455X sits in the 50th percentile with an average score of 0. The verdict is straightforward: the RTX 4060 is the choice for any graphics-related task, while the MI455X is a specialized accelerator whose performance data is not recorded in this database.

Architecture Differences

The two chips diverge completely in architecture. The MI455X uses AMD's CDNA 5.0 architecture, built on a 2 nm process at TSMC with a staggering 320,000 million transistors on a 2990 mm² die, yielding a transistor density of 107.0M per mm². The RTX 4060 uses NVIDIA's Ada Lovelace architecture on a 5 nm process, also at TSMC, with 18,900 million transistors on a 159 mm² die, for a density of 118.9M per mm². The MI455X chip is designated MI450 256CU, while the RTX 4060 uses the AD107 chip. The MI455X belongs to the Instinct (MIx) generation and the RTX 4060 to the GeForce 40 generation.

Memory architecture differs as well. The MI455X uses 432 GB of HBM4 memory on a 24576-bit bus, delivering 23.3 TB/s of bandwidth. The RTX 4060 uses 8 GB of GDDR6 on a 128-bit bus, providing 272.0 GB/s. The MI455X has no RT cores and no tensor cores listed, while the RTX 4060 includes 24 RT cores and 96 tensor cores. The MI455X reports zero ROPs and a pixel rate of 0 MPixel/s, indicating it cannot rasterize images. The RTX 4060 has 48 ROPs and a pixel rate of 118.1 GPixel/s. The MI455X supports no graphics APIs, with DirectX, OpenGL, and Vulkan all listed as N/A, whereas the RTX 4060 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI455X uses a PCIe 6.0 x16 interface, while the RTX 4060 uses PCIe 4.0 x8. The MI455X has no power connectors and is an EAM Module slot width, while the RTX 4060 is a dual-slot card with a single 12-pin connector.

Where Each One Wins

The RTX 4060 wins in every measurable graphics category because the MI455X has no recorded benchmarks and no graphics capabilities. The RTX 4060 delivers 15.11 TFLOPS of FP32 performance and 15.11 TFLOPS of FP16, with a texture rate of 236.2 GTexel/s. The MI455X delivers 157.3 TFLOPS of FP32 and 157.3 TFLOPS of FP16, with a texture rate of 2457.6 GTexel/s, but these raw compute figures are not accompanied by any synthetic benchmark results in the database. The MI455X has 32768 shading units and 1024 TMUs, while the RTX 4060 has 3072 shading units and 96 TMUs. The MI455X has no display outputs; the RTX 4060 offers 1x HDMI 2.1 and 3x DisplayPort 1.4a. The MI455X cannot run DirectX, OpenGL, or Vulkan workloads, so the RTX 4060 wins in all gaming and desktop rendering scenarios by default. The RTX 4060's benchmark scores include 2302 in 3DMark Steel Nomad DX12, 95057 in Geekbench OpenCL, 48643 in Geekbench Vulkan, and 19545 in Passmark G3D. The MI455X has no corresponding entries.

The MI455X wins in memory capacity and bandwidth, with 432 GB versus 8 GB and 23.3 TB/s versus 272.0 GB/s. It also wins in raw FP32 and FP16 compute throughput, with 157.3 TFLOPS versus 15.11 TFLOPS in both precisions. The MI455X has a higher transistor count and larger die, and it uses a more advanced 2 nm process. The MI455X also supports PCIe 6.0 x16 compared to PCIe 4.0 x8. The RTX 4060 has a higher boost clock at 2460 MHz versus 2400 MHz, and a higher base clock at 1830 MHz versus 1000 MHz. The RTX 4060 has a much lower power draw at 115 W versus 2300 W, and its suggested PSU is 300 W versus 2700 W.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Instinct MI455X delivers 157.3 TFLOPS of FP32, while the NVIDIA GeForce RTX 4060 delivers 15.11 TFLOPS. The MI455X leads by a factor of over ten.

Q: Does the AMD Instinct MI455X support any graphics APIs?

A: No. The database lists DirectX, OpenGL, and Vulkan as N/A for the MI455X, and it has no display outputs.

Q: What is the memory configuration of each card?

A: The MI455X has 432 GB of HBM4 memory on a 24576-bit bus with 23.3 TB/s bandwidth. The RTX 4060 has 8 GB of GDDR6 on a 128-bit bus with 272.0 GB/s bandwidth.

Q: How does the RTX 4060 compare to its nearest rivals in the database?

A: The RTX 4060 has an average benchmark score of 17639. It is 0.2% below the AMD Radeon HD 7790 (17666), 0.3% above the AMD Radeon 780M (17588), 0.5% above the AMD Radeon Pro 560 (17551), and 0.7% above the AMD Radeon Pro 460 (17509).

Q: What are the power requirements for each card?

A: The MI455X has a TDP of 2300 W and a suggested PSU of 2700 W. The RTX 4060 has a TDP of 115 W and a suggested PSU of 300 W.

Q: When were these products released?

A: The MI455X was released on 2026-07-22, and the RTX 4060 was released on 2023-05-17.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the MI455X and the RTX 4060, and the MI455X has no individual benchmark scores at all. The RTX 4060, however, has a full set of recorded results. Its highest single benchmark score is 95057 in Geekbench OpenCL, followed by 48643 in Geekbench Vulkan. In Passmark tests, the RTX 4060 scores 19545 in G3D, 9213 in GPU Compute, 1037 in G2D, 236 in DirectX 9, 175 in DirectX 11, 103 in DirectX 10, and 76 in DirectX 12. In 3DMark Steel Nomad DX12, it scores 2302. These results place the RTX 4060 at the 61st percentile of all GPUs with an average score of 17639. The MI455X sits at the 50th percentile with an average score of 0.

The biggest performance gap in the database is therefore not between the two products being compared, but between the RTX 4060 and its own nearest rivals. The RTX 4060 trails the AMD Radeon HD 7790 by 0.2%, with the HD 7790 averaging 17666. It leads the AMD Radeon 780M by 0.3%, the AMD Radeon Pro 560 by 0.5%, and the AMD Radeon Pro 460 by 0.7%. These deltas are small, indicating that the RTX 4060 sits in a tightly clustered performance band among its closest competitors. The MI455X cannot be placed in that band because no benchmark data exists for it.

The raw compute specifications of the MI455X suggest a different performance class. Its FP32 figure of 157.3 TFLOPS is more than ten times the RTX 4060's 15.11 TFLOPS. Its texture rate of 2457.6 GTexel/s is over ten times the RTX 4060's 236.2 GTexel/s. Its memory bandwidth of 23.3 TB/s is roughly 85 times the RTX 4060's 272.0 GB/s. These are the largest numerical differences in the recorded data, but they do not translate into benchmark wins for the MI455X because its performance is not measured in any test.

Specification Differences

The two products differ in nearly every recorded specification. The MI455X uses a 2 nm process; the RTX 4060 uses 5 nm. The MI455X has 320,000 million transistors; the RTX 4060 has 18,900 million. Die size is 2990 mm² versus 159 mm². Transistor density is 107.0M per mm² versus 118.9M per mm².

Clock speeds differ modestly. The MI455X has a base clock of 1000 MHz and a boost clock of 2400 MHz. The RTX 4060 has a base clock of 1830 MHz and a boost clock of 2460 MHz. Memory clocks are 1900 MHz (7.6 Gbps effective) for the MI455X and 2125 MHz (17 Gbps effective) for the RTX 4060.

Compute resources differ by an order of magnitude. The MI455X has 32768 shading units, 1024 TMUs, and 0 ROPs. The RTX 4060 has 3072 shading units, 96 TMUs, and 48 ROPs. The MI455X has no RT cores or tensor cores listed; the RTX 4060 has 24 RT cores and 96 tensor cores.

Memory capacity is 432 GB versus 8 GB. Memory type is HBM4 versus GDDR6. Bus width is 24576 bit versus 128 bit. Bandwidth is 23.3 TB/s versus 272.0 GB/s.

Rasterization output differs completely. The MI455X has a pixel rate of 0 MPixel/s and a texture rate of 2457.6 GTexel/s. The RTX 4060 has a pixel rate of 118.1 GPixel/s and a texture rate of 236.2 GTexel/s.

Power and physical specifications diverge sharply. The MI455X has a TDP of 2300 W and a suggested PSU of 2700 W; the RTX 4060 has a TDP of 115 W and a suggested PSU of 300 W. The MI455X is an EAM Module with no power connectors; the RTX 4060 is a dual-slot card with a single 12-pin connector. The RTX 4060 measures 240 mm by 111 mm by 40 mm.

Interface and output support differ as well. The MI455X uses PCIe 6.0 x16 and has no display outputs. The RTX 4060 uses PCIe 4.0 x8 and has 1x HDMI 2.1 and 3x DisplayPort 1.4a. The MI455X supports no APIs; the RTX 4060 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 4060 has a launch MSRP of 299 USD.