AMD Instinct MI455X vs NVIDIA GeForce RTX 5070 Ti Mobile Comparison

Head-to-Head Benchmarks

The recorded data contains benchmark results for only one of the two accelerators in this comparison. The AMD Instinct MI455X has no benchmark scores in the database, an average benchmark score of 0, and a percentile ranking of 50 among all GPUs. The NVIDIA GeForce RTX 5070 Ti Mobile, by contrast, has nine recorded benchmark scores, an average benchmark score of 35,435, and a percentile ranking of 80. Direct head-to-head comparisons cannot be established from the database because no shared test results exist for both parts. However, the available data for the RTX 5070 Ti Mobile can be examined in isolation, and the architectural specifications of the MI455X can be compared against those recorded results.

The RTX 5070 Ti Mobile shows its strongest recorded result in the Geekbench OpenCL test with a score of 143,870. Its Geekbench Vulkan score is 139,213, which is 4,657 points lower than the OpenCL score, indicating a modest advantage for the OpenCL path in this particular benchmark suite. In the Passmark suite, the G3D score is 24,004, which far exceeds the compute-specific score of 10,101 in the Passmark GPU Compute test. The DirectX legacy tests show a different pattern: DirectX 9 returns 259, DirectX 11 returns 237, DirectX 10 returns 151, and DirectX 12 returns 102. The G2D score is 981. These results confirm that the RTX 5070 Ti Mobile delivers its highest recorded output in compute-oriented workloads rather than in legacy DirectX rasterization tests.

The nearest rival data for the RTX 5070 Ti Mobile places it in a tight cluster. The NVIDIA Quadro GV100 has an average score of 35,520, which is 0.2% higher than the RTX 5070 Ti Mobile's average of 35,435. The AMD Radeon Pro Duo sits 1.2% higher with an average score of 35,860. The NVIDIA T1000 is 2.4% higher at 36,289. The only rival in the list that the RTX 5070 Ti Mobile leads is the NVIDIA A2, which trails by 2.1% with an average score of 34,690. These deltas are all within a narrow band of roughly 4.5 percentage points from the lowest to the highest scorer, which suggests that the RTX 5070 Ti Mobile performs in the same performance tier as those four workstation and datacenter parts in the aggregate benchmark average.

The MI455X has no recorded wins in this comparison, and the RTX 5070 Ti Mobile also has no recorded wins, because the head-to-head benchmark list is empty. The database therefore provides no direct score differential between the two products. Any interpretation of relative performance must rely on the specification sheet and the fact that the RTX 5070 Ti Mobile has a substantial body of recorded benchmark data while the MI455X has none.

The Verdict

The data indicates that the NVIDIA GeForce RTX 5070 Ti Mobile is the only one of the two products with recorded performance measurements. Its average benchmark score of 35,435 and 80th percentile ranking among all GPUs give it a concrete position in the database. The AMD Instinct MI455X has an average benchmark score of 0 and a 50th percentile ranking, though that percentile is a placeholder value assigned in the absence of measured results rather than a performance statement.

For workloads that rely on the benchmark categories recorded for the RTX 5070 Ti Mobile, the available evidence supports that product as the one with verified performance. The RTX 5070 Ti Mobile also carries the DirectX 12 Ultimate (12_2) API, OpenGL 4.6, and Vulkan 1.4, whereas the MI455X has no API support listed for DirectX, OpenGL, or Vulkan, all marked as N/A. The MI455X has no display outputs, which aligns with its role as an accelerator module rather than a graphics card. The RTX 5070 Ti Mobile lists display outputs as portable device dependent, meaning it can drive displays in systems that provide the necessary connections.

The MI455X presents itself as a compute-oriented module with a power envelope of 2,300 W and a suggested power supply of 2,700 W, while the RTX 5070 Ti Mobile consumes 60 W and has no suggested power supply listed. The MI455X targets a completely different deployment class. The RTX 5070 Ti Mobile is recorded as active in production status, while the MI455X has no production status recorded. The RTX 5070 Ti Mobile also has a release date of February 28, 2025, whereas the MI455X has a release date of July 22, 2026. The database supports the RTX 5070 Ti Mobile as a shipping, measured product. The MI455X is a future-dated design with no benchmark presence.

FAQ

Q: Does the AMD Instinct MI455X have any recorded benchmark scores?

A: No. The MI455X has an empty benchmark list, an average benchmark score of 0, and no nearest rivals recorded. Its percentile of 50 is a baseline value, not a measured result.

Q: What is the highest recorded benchmark score for the NVIDIA GeForce RTX 5070 Ti Mobile?

A: The highest recorded score is 143,870 in the Geekbench OpenCL test. The Geekbench Vulkan test follows at 139,213.

Q: How does the RTX 5070 Ti Mobile compare to its nearest rivals in average score?

A: The RTX 5070 Ti Mobile averages 35,435. The NVIDIA Quadro GV100 is 0.2% higher, the AMD Radeon Pro Duo is 1.2% higher, the NVIDIA T1000 is 2.4% higher, and the NVIDIA A2 is 2.1% lower.

Q: Which product has a higher average benchmark score?

A: The RTX 5070 Ti Mobile has an average benchmark score of 35,435. The MI455X has an average benchmark score of 0, so the RTX 5070 Ti Mobile is the only one of the two with a non-zero recorded average.

Q: What DirectX version does the MI455X support?

A: The MI455X lists DirectX as N/A. It also lists OpenGL and Vulkan as N/A. The RTX 5070 Ti Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the production status of each product?

A: The RTX 5070 Ti Mobile is recorded as active in production. The MI455X has no production status recorded.

Specification Differences

The two products differ in nearly every measured specification. The MI455X uses a chip labeled MI450 256CU, while the RTX 5070 Ti Mobile uses GB205. The MI455X is built on a 2 nm process at TSMC, while the RTX 5070 Ti Mobile uses a 5 nm process at TSMC. Transistor counts differ enormously: the MI455X has 320,000 million transistors on a die size of 2,990 mm², giving a transistor density of 107.0 million per mm². The RTX 5070 Ti Mobile has 31,100 million transistors on a 263 mm² die, with a density of 118.3 million per mm².

Clock speeds also diverge. The MI455X has a base clock of 1000 MHz and a boost clock of 2400 MHz, with memory clocked at 1900 MHz (7.6 Gbps effective). The RTX 5070 Ti Mobile has a base clock of 847 MHz and a boost clock of 1447 MHz, with memory at 1750 MHz (28 Gbps effective). Memory capacity is 432 GB of HBM4 on the MI455X with a 24,576-bit bus and 23.3 TB/s bandwidth. The RTX 5070 Ti Mobile has 12 GB of GDDR7 on a 192-bit bus with 672.0 GB/s bandwidth.

The MI455X has 32,768 shading units, 1,024 texture mapping units, and 0 ROPs, with a pixel rate of 0 MPixel/s and a texture rate of 2,457.6 GTexel/s. The RTX 5070 Ti Mobile has 5,888 shading units, 184 TMUs, 80 ROPs, 46 ray tracing cores, and 184 tensor cores, with a pixel rate of 115.8 GPixel/s and a texture rate of 266.2 GTexel/s. FP32 throughput is 157.3 TFLOPS for the MI455X and 17.04 TFLOPS for the RTX 5070 Ti Mobile, both with 1:1 FP16 ratios. The MI455X has no display outputs, while the RTX 5070 Ti Mobile has display outputs described as portable device dependent. The MI455X uses a PCIe 6.0 x16 interface; the RTX 5070 Ti Mobile uses PCIe 5.0 x16.

Architecture Differences

The MI455X is built on CDNA 5.0 architecture, part of the Instinct (MIx) generation, and belongs to the AMD Instinct product family. It uses an EAM module slot width and has no power connectors listed. Its predecessor is listed as Radeon Instinct. The RTX 5070 Ti Mobile is built on Blackwell 2.0 architecture, part of the GeForce 50 Mobile generation, and belongs to the GeForce 50-series. It uses an IGP slot width, also has no power connectors, and its predecessor is the GeForce 40 Mobile.

The MI455X carries 432 GB of HBM4 memory, which is the defining memory feature of the part, paired with a 24,576-bit bus. The RTX 5070 Ti Mobile uses 12 GB of GDDR7 on a 192-bit bus. The MI455X has no ray tracing cores and no tensor cores listed; the RTX 5070 Ti Mobile has 46 ray tracing cores and 184 tensor cores. The MI455X has no API support for DirectX, OpenGL, or Vulkan, which indicates a compute-only design. The RTX 5070 Ti Mobile supports the full modern graphics API set.

The MI455X has a TDP of 2,300 W and a suggested power supply of 2,700 W. The RTX 5070 Ti Mobile has a TDP of 60 W and no suggested power supply listed. The MI455X has no display outputs, reinforcing its role as a compute accelerator. The RTX 5070 Ti Mobile can drive displays depending on the portable device it is installed in. The MI455X is scheduled for a July 22, 2026 release, while the RTX 5070 Ti Mobile was released on February 28, 2025.

Where Each One Wins

The RTX 5070 Ti Mobile wins in every category where recorded measurements exist, because the MI455X has no benchmark entries. The RTX 5070 Ti Mobile shows strength in Geekbench OpenCL (143,870) and Vulkan (139,213), which indicates solid compute performance in those cross-platform APIs. Its Passmark G3D score of 24,004 is the highest Passmark graphics score recorded for the part, and its Passmark GPU Compute score of 10,101 confirms separate compute capability. The DirectX legacy scores are lower, with DirectX 12 at 102, DirectX 11 at 237, DirectX 10 at 151, and DirectX 9 at 259. The G2D score of 981 rounds out the recorded results.

The MI455X wins on raw specification counts. Its FP32 throughput of 157.3 TFLOPS is more than nine times the 17.04 TFLOPS of the RTX 5070 Ti Mobile. Its memory bandwidth of 23.3 TB/s is roughly 35 times the 672.0 GB/s of the RTX 5070 Ti Mobile. Its 432 GB memory capacity dwarfs the 12 GB of the RTX 5070 Ti Mobile. Its texture rate of 2,457.6 GTexel/s is more than nine times the 266.2 GTexel/s of the RTX 5070 Ti Mobile. Its 32,768 shading units are more than five times the 5,888 of the RTX 5070 Ti Mobile.

The RTX 5070 Ti Mobile wins on efficiency and deployability. Its 60 W TDP is dramatically lower than the 2,300 W TDP of the MI455X. Its 5 nm process enables a smaller die of 263 mm² versus 2,990 mm². It has an active production status, a released date, and a full suite of graphics APIs. The MI455X has no production status, a future release date, and no graphics API support. The RTX 5070 Ti Mobile also has 80 ROPs and a pixel rate of 115.8 GPixel/s, while the MI455X has 0 ROPs and a pixel rate of 0 MPixel/s, which confirms the MI455X is not intended for rasterization output.

In terms of database standing, the RTX 5070 Ti Mobile sits at the 80th percentile among all GPUs with a 35,435 average score. The MI455X sits at the 50th percentile with a 0 average score, but that percentile is a default value rather than a measured rank. The nearest rival comparison for the RTX 5070 Ti Mobile shows it trading places with the Quadro GV100, Radeon Pro Duo, A2, and T1000 within a 2.4% band, which places it in a competitive mid-range compute tier. The MI455X has no nearest rivals recorded, so no similar positioning exists for it in the database. The data supports the RTX 5070 Ti Mobile as the measured, verified performer, while the MI455X remains a specification-only entry.