AMD Instinct MI350X vs NVIDIA GeForce RTX 5080 Mobile Comparison

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark comparisons between the AMD Instinct MI350X and the NVIDIA GeForce RTX 5080 Mobile. The MI350X has no benchmark entries and a percentile rank of 50 among all GPUs, with an average benchmark score of 0. The RTX 5080 Mobile, in contrast, has an average benchmark score of 38,349 and sits at the 81st percentile, meaning it outperforms the vast majority of recorded graphics hardware.

The RTX 5080 Mobile's recorded data shows a 3DMark Steel Nomad DX12 score of 4,952, a Geekbench OpenCL score of 166,986, and a Geekbench Vulkan score of 169,754. Its PassMark results include a G3D score of 27,711 and a GPU compute score of 12,134. The nearest rivals in the database for this mobile GPU are the NVIDIA GeForce MX570 with an average score of 38,299 and a delta of 0.1 percent, the NVIDIA GeForce RTX 4080 Mobile with 38,135 and a 0.6 percent delta, the NVIDIA GeForce MX570 A with 38,691 and a negative 0.9 percent delta, and the AMD Radeon Pro 580X with 38,706 and a negative 0.9 percent delta. These figures indicate that the RTX 5080 Mobile operates within a narrow performance band among its closest competitors, with all deltas within one percent.

Because the MI350X has no benchmark scores, no quantitative comparison of wins or losses can be derived from the existing data. The MI350X is classified at the 50th percentile by default, which reflects a lack of recorded performance measurements rather than an actual performance level. The RTX 5080 Mobile's 81st percentile placement demonstrates that it ranks well above the median of all GPUs in the database, while the MI350X's position is unverified.

FAQ

Q: Does the AMD Instinct MI350X have any benchmark scores in the database?

A: No, the MI350X has an empty benchmark list, an average benchmark score of 0, and a percentile rank of 50, which is the default placement for hardware without recorded measurements.

Q: What is the RTX 5080 Mobile's best recorded benchmark result?

A: The highest single score is 169,754 in the Geekbench Vulkan test, followed by 166,986 in Geekbench OpenCL and 27,711 in PassMark G3D.

Q: How does the RTX 5080 Mobile compare to its nearest rivals?

A: The recorded data shows a 0.1 percent lead over the GeForce MX570, a 0.6 percent lead over the RTX 4080 Mobile, a 0.9 percent deficit against the MX570 A, and a 0.9 percent deficit against the Radeon Pro 580X.

Q: What is the memory configuration of each GPU?

A: The MI350X has 288 GB of HBM3e memory on an 8192-bit bus with 8.19 TB/s bandwidth, while the RTX 5080 Mobile has 16 GB of GDDR7 memory on a 256-bit bus with 896.0 GB/s bandwidth.

Q: Which GPU has a higher boost clock?

A: The MI350X has a boost clock of 2200 MHz, while the RTX 5080 Mobile has a boost clock of 1500 MHz.

Q: Are these GPUs comparable in physical form?

A: No, the MI350X is an OAM Module with dimensions of 102 mm by 165 mm and no display outputs, while the RTX 5080 Mobile is an IGP (integrated graphics processor) with display outputs described as portable device dependent.

Architecture Differences

The AMD Instinct MI350X uses the CDNA 4.0 architecture on a 3 nm process from TSMC, built around the MI350 256CU chip. The NVIDIA GeForce RTX 5080 Mobile uses the Blackwell 2.0 architecture on a 5 nm process from TSMC, built around the GB203 chip. The manufacturing process difference is significant: the MI350X's 3 nm node is smaller than the RTX 5080 Mobile's 5 nm node, which typically allows for higher transistor density, although the recorded data shows the opposite density outcome in this case.

The MI350X contains 185,000 million transistors on a die size of 2,380 mm², resulting in a transistor density of 77.7 million per square millimeter. The RTX 5080 Mobile contains 45,600 million transistors on a die size of 378 mm², giving it a density of 120.6 million per square millimeter. Despite the larger absolute transistor count, the MI350X has a lower density due to its much larger die.

Compute resources differ substantially. The MI350X has 16,384 shading units and 1,024 texture mapping units, but no ROPs, ray tracing cores, or tensor cores are listed. Its pixel rate is recorded as 0 MPixel/s, and its texture rate is 2,252.8 GTexel/s. The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, 96 ROPs, 60 ray tracing cores, and 240 tensor cores. Its pixel rate is 144.0 GPixel/s, and its texture rate is 360.0 GTexel/s.

The memory subsystems are built on completely different technologies. The MI350X uses HBM3e with 288 GB capacity, an 8192-bit bus, and 8.19 TB/s bandwidth, with memory clocked at 2000 MHz and 8 Gbps effective. The RTX 5080 Mobile uses GDDR7 with 16 GB capacity, a 256-bit bus, and 896.0 GB/s bandwidth, with memory clocked at 1750 MHz and 28 Gbps effective. The MI350X has roughly nine times the bandwidth, but the RTX 5080 Mobile has a much smaller footprint.

API support also diverges. The MI350X lists N/A for DirectX, OpenGL, and Vulkan, reflecting its role as a compute-oriented accelerator without a display path. The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it a full-featured graphics processor for interactive applications.

Specification Differences

The two GPUs differ in nearly every measurable specification. The MI350X has a base clock of 1000 MHz and a boost clock of 2200 MHz. The RTX 5080 Mobile has a base clock of 975 MHz and a boost clock of 1500 MHz. The MI350X leads in clock speed by 25 MHz at base and 700 MHz at boost.

Memory capacity differs by a factor of 18: the MI350X has 288 GB versus the RTX 5080 Mobile's 16 GB. Memory type is HBM3e versus GDDR7. Bus width is 8192 bit versus 256 bit. Memory bandwidth is 8.19 TB/s versus 896.0 GB/s. Memory clock is 2000 MHz (8 Gbps effective) versus 1750 MHz (28 Gbps effective).

Compute throughput shows the MI350X ahead in raw FP32: 72.09 TFLOPS versus 23.04 TFLOPS. FP16 performance is identical to FP32 for both, at 72.09 TFLOPS and 23.04 TFLOPS respectively, with a 1:1 ratio recorded. Texture rate is 2,252.8 GTexel/s versus 360.0 GTexel/s.

The MI350X has a TDP of 1000 W with a suggested PSU of 1400 W. The RTX 5080 Mobile has a TDP of 80 W with no suggested PSU listed. The MI350X uses an OAM Module slot width and has no power connectors, while the RTX 5080 Mobile is an IGP and also has no power connectors.

Physical dimensions are only recorded for the MI350X: 102 mm length (4 inches) and 165 mm width (6.5 inches). The RTX 5080 Mobile has no recorded dimensions. Release dates differ by about two months: the MI350X was released on June 11, 2025, and the RTX 5080 Mobile on April 1, 2025. The MI350X has a predecessor of Radeon Instinct, while the RTX 5080 Mobile has a predecessor of GeForce 40 Mobile. The RTX 5080 Mobile is marked as active in production status, while the MI350X has no production status recorded.

The Verdict

The data presents two fundamentally different products with no direct benchmark overlap. The AMD Instinct MI350X is a massive compute accelerator with 288 GB of HBM3e memory, 8.19 TB/s of bandwidth, and 72.09 TFLOPS of FP32 performance. It targets workloads that demand enormous memory capacity and bandwidth, as indicated by its OAM Module form factor, absence of display outputs, and lack of graphics API support. Its 1000 W TDP and 1400 W suggested PSU confirm a server or data center orientation.

The NVIDIA GeForce RTX 5080 Mobile is a compact integrated graphics processor with 16 GB of GDDR7 memory, 896.0 GB/s of bandwidth, and 23.04 TFLOPS of FP32 performance. It supports the full modern graphics API stack, including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and includes dedicated ray tracing and tensor cores. Its 80 W TDP makes it suitable for portable devices, and its display outputs are described as portable device dependent.

Benchmark results exist only for the RTX 5080 Mobile. Its 81st percentile rank and average score of 38,349 place it ahead of most GPUs in the database, with its nearest rivals all within one percent. The MI350X has no recorded benchmarks, so its percentile rank of 50 reflects an absence of data rather than a performance measurement.

The choice between these two depends on the application context. The MI350X is the only option for tasks requiring 288 GB of memory and multi-terabyte bandwidth, such as large-scale compute workloads, but it cannot output video and lacks graphics API support. The RTX 5080 Mobile is the only option for portable, interactive graphics with ray tracing and tensor acceleration, and it has verified performance data. The recorded specifications show no overlap in intended use cases, and neither product can substitute for the other in its respective domain.