AMD Instinct MI355X vs NVIDIA GeForce RTX 4060 Mobile Comparison

FAQ

Q: What are the core architectural identities of the AMD Instinct MI355X and the NVIDIA GeForce RTX 4060 Mobile?

A: The AMD Instinct MI355X is built on the CDNA 4.0 architecture, specifically the MI350 256CU chip, while the NVIDIA GeForce RTX 4060 Mobile uses the Ada Lovelace architecture with the AD107 chip. These are fundamentally different designs: one is a server-grade compute accelerator, the other is a mobile consumer GPU.

Q: How do the raw compute specifications compare between the two?

A: The AMD Instinct MI355X delivers 78.64 TFLOPS of FP32 compute, which is approximately 6.8 times higher than the RTX 4060 Mobile's 11.61 TFLOPS. The MI355X also has 16,384 shading units versus 3,072, and a texture rate of 2,457.6 GTexel/s compared to 181.4 GTexel/s for the NVIDIA part.

Q: What are the major differences in memory configuration?

A: The MI355X features 288 GB of HBM3e memory on an 8192-bit bus, yielding 8.19 TB/s of bandwidth. The RTX 4060 Mobile has 8 GB of GDDR6 on a 128-bit bus, providing 256.0 GB/s. The MI355X's bandwidth advantage is roughly 32 times higher, driven by both the larger bus width and faster memory type.

Q: Which GPU has higher transistor density despite being on a larger process node?

A: The RTX 4060 Mobile uses a 5 nm process and packs 18,900 million transistors into a 159 mm² die, resulting in a density of 118.9M transistors per mm². The MI355X uses a 3 nm process but has a massive 2380 mm² die with 185,000 million transistors, yielding a lower density of 77.7M per mm².

Q: What benchmark data exists for these two GPUs?

A: The database contains benchmark scores only for the RTX 4060 Mobile, which achieved a Geekbench OpenCL score of 89,420 and a Vulkan score of 89,569. Its Passmark G3D score was 17,469. No benchmark scores are recorded for the MI355X, and its average benchmark score is 0 with a 50th percentile ranking.

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

A: The RTX 4060 Mobile's average benchmark score of 22,729 places it right between the NVIDIA GeForce RTX 2080 (22,895, a 0.7% deficit) and the AMD Radeon RX 7700 XT (22,549, a 0.8% advantage). It also sits within 1.3% of the Intel Arc B580 and 1.3% ahead of the NVIDIA GeForce RTX 5060 Mobile.

Architecture Differences

The AMD Instinct MI355X and NVIDIA GeForce RTX 4060 Mobile represent two entirely different design philosophies. The MI355X is a data-center compute accelerator built on CDNA 4.0, while the RTX 4060 Mobile is a consumer laptop GPU based on Ada Lovelace. The MI355X uses a 3 nm process at TSMC with 185,000 million transistors spread across a 2380 mm² die. The RTX 4060 Mobile uses a 5 nm process at the same foundry with only 18,900 million transistors on a 159 mm² die.

The most striking architectural difference is the memory subsystem. The MI355X uses HBM3e memory with a 8192-bit bus, giving it 8.19 TB/s of bandwidth. The RTX 4060 Mobile uses GDDR6 on a 128-bit bus with 256.0 GB/s. This 32-fold bandwidth gap dictates the MI355X's role as a high-throughput compute engine, while the RTX 4060 Mobile targets power-efficient rendering.

Compute resources differ dramatically. The MI355X has 16,384 shading units and 1,024 texture mapping units, but zero ROPs and a pixel rate of 0 MPixel/s. It has no display outputs, making it a pure compute device. The RTX 4060 Mobile has 3,072 shading units, 96 TMUs, and 48 ROPs, with a pixel rate of 90.72 GPixel/s and texture rate of 181.4 GTexel/s. It supports display outputs dependent on the portable device.

The RTX 4060 Mobile includes 24 ray tracing cores and 96 tensor cores, features entirely absent from the MI355X's specification sheet. The MI355X also lacks API support for DirectX, OpenGL, and Vulkan, listing them as N/A. The RTX 4060 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Clock behavior differs as well. The MI355X has a base clock of 1000 MHz and boost clock of 2400 MHz. The RTX 4060 Mobile runs at a base of 1545 MHz and boosts to 1890 MHz. The MI355X's higher boost clock, combined with more cores, drives its FP32 performance to 78.64 TFLOPS versus 11.61 TFLOPS for the RTX 4060 Mobile.

Power envelopes are in different leagues. The MI355X has a TDP of 1400 W and is mounted as an OAM module with no power connectors, requiring a suggested PSU of 1800 W. The RTX 4060 Mobile consumes 115 W and is an IGP-class component. The MI355X measures 102 mm in length and 165 mm in width, while the RTX 4060 Mobile has no recorded dimensions.

The MI355X uses a PCIe 5.0 x16 interface, while the RTX 4060 Mobile uses PCIe 4.0 x8. The MI355X was released on 2025-06-11, succeeding Radeon Instinct. The RTX 4060 Mobile released on 2023-01-02, succeeding GeForce 30 Mobile and followed by GeForce 50 Mobile. The RTX 4060 Mobile is marked as Active in production status, while the MI355X has no recorded status.

Where Each One Wins

The AMD Instinct MI355X wins in every raw compute category. Its FP32 throughput of 78.64 TFLOPS is nearly seven times the RTX 4060 Mobile's 11.61 TFLOPS. Texture rate favors the MI355X at 2,457.6 GTexel/s, which is over 13 times the NVIDIA part's 181.4 GTexel/s. Memory bandwidth is the biggest separator: 8.19 TB/s versus 256.0 GB/s.

The MI355X also wins on die size and transistor count. Its 2380 mm² die and 185,000 million transistors dwarf the RTX 4060 Mobile's 159 mm² and 18,900 million. The MI355X uses a more advanced 3 nm process, though the RTX 4060 Mobile achieves higher transistor density at 118.9M per mm² versus 77.7M per mm².

The NVIDIA GeForce RTX 4060 Mobile wins in areas relevant to consumer graphics. It has 48 ROPs and a pixel rate of 90.72 GPixel/s, while the MI355X has zero ROPs and no pixel output. The RTX 4060 Mobile includes ray tracing cores and tensor cores, features the MI355X does not list. The NVIDIA part supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI355X has no API support.

Power efficiency favors the RTX 4060 Mobile. It operates at 115 W TDP versus 1400 W for the MI355X, a 12-fold difference. The RTX 4060 Mobile is a production-active product with benchmark data, while the MI355X has no recorded benchmark scores and an average score of 0.

The RTX 4060 Mobile holds a 67th percentile ranking among all GPUs in the database. The MI355X sits at the 50th percentile, though this is based on zero benchmark results. The RTX 4060 Mobile's nearest rivals show it competing closely with desktop-class GPUs like the RTX 2080 and RX 7700 XT, with deltas under one percent.

Specification Differences

The MI355X and RTX 4060 Mobile differ across every major specification category. The MI355X uses CDNA 4.0 architecture with the MI350 256CU chip, while the RTX 4060 Mobile uses Ada Lovelace with the AD107 chip. Process nodes differ: 3 nm for AMD, 5 nm for NVIDIA.

Transistor counts are 185,000 million for the MI355X versus 18,900 million for the RTX 4060 Mobile. Die sizes are 2380 mm² and 159 mm² respectively. Transistor density is higher on the NVIDIA part at 118.9M per mm² versus 77.7M per mm².

Clock speeds differ in both base and boost. The MI355X runs at 1000 MHz base and 2400 MHz boost. The RTX 4060 Mobile runs at 1545 MHz base and 1890 MHz boost. Memory clocks are the same at 2000 MHz, but effective rates differ: 8 Gbps for the MI355X and 16 Gbps for the RTX 4060 Mobile.

Memory configurations are vastly different. The MI355X has 288 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The RTX 4060 Mobile has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth.

Core counts differ: 16,384 shading units versus 3,072, 1,024 TMUs versus 96, and 0 ROPs versus 48. The RTX 4060 Mobile has 24 RT cores and 96 tensor cores, which the MI355X does not list.

Compute rates are 78.64 TFLOPS FP32 and FP16 (1:1) for the MI355X. The RTX 4060 Mobile delivers 11.61 TFLOPS in both FP32 and FP16 (1:1). Pixel rate is 0 MPixel/s for the MI355X and 90.72 GPixel/s for the NVIDIA part. Texture rate is 2,457.6 GTexel/s versus 181.4 GTexel/s.

Power specifications show a 1400 W TDP for the MI355X and 115 W for the RTX 4060 Mobile. The MI355X is an OAM Module with no power connectors and a suggested PSU of 1800 W. The RTX 4060 Mobile is IGP-class with no power connectors and no suggested PSU.

Bus interfaces differ: PCIe 5.0 x16 for the MI355X, PCIe 4.0 x8 for the RTX 4060 Mobile. Display outputs are absent on the MI355X, while the RTX 4060 Mobile's outputs are portable device dependent.

API support is absent on the MI355X (N/A for DirectX, OpenGL, Vulkan). The RTX 4060 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release dates differ by over two years: 2025-06-11 for the MI355X, 2023-01-02 for the RTX 4060 Mobile. The MI355X's predecessor is Radeon Instinct, while the RTX 4060 Mobile's predecessor is GeForce 30 Mobile and successor is GeForce 50 Mobile. The RTX 4060 Mobile has an Active production status; the MI355X has none recorded.

Head-to-Head Benchmarks

The database contains benchmark results only for the NVIDIA GeForce RTX 4060 Mobile. The AMD Instinct MI355X has no recorded benchmark scores, an average benchmark score of 0, and no nearest rivals listed. The head-to-head benchmark array is empty, and the win counts are 0 for both parts.

The RTX 4060 Mobile's benchmark data provides context for its performance tier. Its Geekbench OpenCL score of 89,420 and Vulkan score of 89,569 are nearly identical, indicating consistent performance across compute APIs. Passmark results show a G3D score of 17,469, a GPU compute score of 6,816, and a G2D score of 730. DirectX tests range from 73 in DirectX 12 to 216 in DirectX 9, with DirectX 10 at 107 and DirectX 11 at 157.

The RTX 4060 Mobile's average benchmark score of 22,729 places it at the 67th percentile of all GPUs. Its nearest rivals in the database are all within a narrow band. The NVIDIA GeForce RTX 2080 scores 22,895, which is 0.7% higher. The AMD Radeon RX 7700 XT scores 22,549, which is 0.8% lower. The Intel Arc B580 scores 23,021, 1.3% higher, and the NVIDIA GeForce RTX 5060 Mobile scores 22,435, 1.3% lower.

These deltas show the RTX 4060 Mobile competing directly with desktop GPUs from previous generations and current mid-range parts. The 0.7% gap to the RTX 2080 is within measurement noise, while the 1.3% gap to the Arc B580 is slightly larger but still close. The RTX 5060 Mobile's 1.3% deficit suggests the 4060 Mobile holds a slight edge over its successor in average benchmark score.

The MI355X's lack of benchmark data means no direct comparison is possible. Its 50th percentile ranking is based on zero recorded scores, which does not reflect actual performance. The database shows no wins for either GPU in head-to-head testing.

Given the specification gap, the MI355X would be expected to dominate compute-heavy workloads. Its FP32 throughput is 78.64 TFLOPS versus 11.61 TFLOPS, a 6.8-fold advantage. Memory bandwidth is 8.19 TB/s versus 256.0 GB/s, a 32-fold advantage. Texture rate is 2,457.6 GTexel/s versus 181.4 GTexel/s, a 13.5-fold advantage.

The RTX 4060 Mobile's advantages are in features the MI355X lacks entirely. It has ROPs, ray tracing cores, tensor cores, and full API support. The MI355X has zero ROPs, no RT or tensor cores, and no display outputs. These differences define their respective use cases: the MI355X for server-side acceleration, the RTX 4060 Mobile for portable graphics.