AMD Instinct MI455X vs Intel Arc 140V Mobile Comparison

The Verdict

The database records two fundamentally different products with no overlapping use cases. The AMD Instinct MI455X is a 2300 W EAM module designed for compute acceleration with a 432 GB HBM4 memory pool, while the Intel Arc 140V Mobile is a 37 W integrated graphics processor embedded in Lunar Lake mobile chips. The data shows zero benchmark wins for either side, and both products hold a 50th percentile position among all GPUs, with an average benchmark score of zero. There are no recorded head-to-head benchmark results, and the nearest rivals list is empty for both entries.

For compute workloads requiring massive memory capacity and extreme throughput, the AMD Instinct MI455X is the only viable selection from the data. For portable devices needing integrated graphics with modern API support, the Intel Arc 140V Mobile is the sole option. The choice is dictated entirely by the target platform: a server accelerator versus a mobile IGP. No user would realistically choose between these two, as they occupy separate market segments with no functional overlap in the recorded specifications.

Architecture Differences

The AMD Instinct MI455X uses the CDNA 5.0 architecture on a 2 nm TSMC process, while the Intel Arc 140V Mobile uses Xe2-LPG on a 3 nm TSMC process. The MI455X is built on the MI450 256CU chip with 320,000 million transistors on a 2990 mm² die, yielding a transistor density of 107.0M per mm². The Intel part uses the Lunar Lake chip with an unknown transistor count on a 172 mm² die.

The MI455X has 32768 shading units, 1024 TMUs, and zero ROPs. It reports a pixel rate of 0 MPixel/s and a texture rate of 2,457.6 GTexel/s. The Arc 140V has 1024 shading units, 64 TMUs, and 32 ROPs, with a pixel rate of 62.40 GPixel/s and a texture rate of 124.8 GTexel/s. The MI455X has no ray tracing cores listed, while the Arc 140V includes 8 RT cores.

Memory architecture differs completely. The MI455X uses 432 GB of HBM4 on a 24576-bit bus, delivering 23.3 TB/s of bandwidth, with memory clocked at 1900 MHz (7.6 Gbps effective). The Arc 140V uses system shared memory, with a system dependent bandwidth and no dedicated VRAM. The MI455X has no display outputs, while the Arc 140V has portable device dependent outputs.

API support is another major split. The MI455X lists N/A for DirectX, OpenGL, and Vulkan. The Arc 140V supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Clock behavior also differs: the MI455X runs at a 1000 MHz base and 2400 MHz boost, while the Arc 140V runs at 300 MHz base and 1950 MHz boost.

The MI455X uses PCIe 6.0 x16 as its bus interface and has no power connectors, with a suggested PSU of 2700 W. The Arc 140V uses an IGP bus interface with no power connector requirements listed. The MI455X is an EAM Module slot width, the Arc 140V is an IGP.

The MI455X belongs to the Instinct (MIx) generation with a Radeon Instinct predecessor and a release date of 2026-07-22. The Arc 140V belongs to Arc Graphics-M (Lunar Lake) with an HD Graphics-M predecessor and a release date of 2024-09-23. The Arc 140V has an active production status, while the MI455X has no production status recorded.

Where Each One Wins

The AMD Instinct MI455X wins exclusively in compute density and memory capacity. It offers 157.3 TFLOPS of FP32 and FP16 (1:1) performance, which is the highest recorded compute figure between the two. Its 432 GB HBM4 memory with 23.3 TB/s bandwidth provides a massive data residency advantage. The 24576-bit memory bus allows extremely wide parallel access. The 2 nm process with 320,000 million transistors on 2990 mm² indicates a purpose-built accelerator with no display functionality.

The Intel Arc 140V Mobile wins in every graphics and display-oriented category. It has 8 RT cores for ray tracing, 32 ROPs for raster output, and a pixel rate of 62.40 GPixel/s. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, which the MI455X entirely lacks. Its 37 W TDP fits mobile platforms, whereas the MI455X requires a 2700 W suggested PSU. The Arc 140V offers FP16 at 7.987 TFLOPS (2:1 ratio), doubling its FP32 rate of 3.994 TFLOPS, indicating a consumer-oriented compute profile.

The Arc 140V also wins on power efficiency in the recorded data, operating at 37 W versus 2300 W. Its system shared memory model integrates with portable device hardware, and its production status is active, meaning it is currently available. The MI455X has no recorded production status, which may indicate a pre-production or niche deployment state.

The MI455X wins on raw throughput per the recorded texture rate of 2,457.6 GTexel/s versus 124.8 GTexel/s for the Arc 140V. The MI455X also wins on memory bandwidth by a factor of hundreds, though the exact ratio is not directly comparable due to the Arc's system dependent figure.

FAQ

Q: Which GPU has higher raw compute performance?

A: The AMD Instinct MI455X delivers 157.3 TFLOPS of FP32 and FP16 (1:1), while the Intel Arc 140V Mobile delivers 3.994 TFLOPS FP32 and 7.987 TFLOPS FP16 (2:1). The MI455X is substantially ahead in both metrics.

Q: Can the AMD Instinct MI455X output video to a display?

A: No. The MI455X lists no display outputs, and its DirectX, OpenGL, and Vulkan APIs are all N/A. The Intel Arc 140V Mobile has portable device dependent outputs and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: What memory configuration does each product use?

A: The MI455X uses 432 GB of HBM4 on a 24576-bit bus with 23.3 TB/s bandwidth and a 1900 MHz memory clock (7.6 Gbps effective). The Arc 140V uses system shared memory with a system dependent bandwidth and no dedicated memory size or type.

Q: Which product has ray tracing support?

A: The Intel Arc 140V Mobile has 8 RT cores. The AMD Instinct MI455X has no RT core count listed, and its architecture is CDNA 5.0, which does not record ray tracing hardware.

Q: What are the power requirements for each GPU?

A: The MI455X has a TDP of 2300 W and a suggested PSU of 2700 W, with no power connectors listed. The Arc 140V has a TDP of 37 W with no power connector or PSU requirements listed.

Q: Which product is currently in production?

A: The Intel Arc 140V Mobile has an active production status. The AMD Instinct MI455X has no production status recorded in the database.

Head-to-Head Benchmarks

The database contains zero head-to-head benchmark entries for these two products, with winsA and winsB both at zero. The nearest rivals list is empty for both, and the average benchmark score for each is zero. The percentile rank for both is 50, indicating a median position in the full GPU distribution, though this is based on an empty benchmark set.

The only meaningful comparisons come from the specification sheet. In FP32 throughput, the MI455X records 157.3 TFLOPS versus 3.994 TFLOPS for the Arc 140V, a 39.4x advantage by direct calculation from the recorded values. In FP16, the MI455X again records 157.3 TFLOPS (1:1), while the Arc 140V records 7.987 TFLOPS (2:1), producing a 19.7x gap. The texture rate shows a 2,457.6 GTexel/s to 124.8 GTexel/s split, a 19.7x difference. The pixel rate favors the Arc 140V at 62.40 GPixel/s, while the MI455X reports 0 MPixel/s.

Memory bandwidth is the largest recorded gap. The MI455X provides 23.3 TB/s from HBM4, whereas the Arc 140V provides a system dependent figure that cannot be quantified from the data. The memory bus width difference is similarly extreme: 24576 bits versus system shared. The MI455X memory size of 432 GB dwarfs the Arc's system shared allocation, though the latter depends on host RAM.

Clock speeds show the MI455X at 1000 MHz base and 2400 MHz boost, versus 300 MHz base and 1950 MHz boost for the Arc 140V. The MI455X boost is 23% higher than the Arc 140V boost. The MI455X has 32768 shading units versus 1024 for the Arc 140V, a 32x difference. TMU counts are 1024 versus 64, a 16x difference. ROP counts are 0 for the MI455X and 32 for the Arc 140V, making the Arc the only one with raster output capability.

The process node differs by one generation step: 2 nm for the MI455X and 3 nm for the Arc 140V, both fabricated by TSMC. The die size difference is extreme at 2990 mm² versus 172 mm², a 17.4x ratio. Transistor count for the MI455X is 320,000 million, while the Arc 140V has an unknown figure. The MI455X transistor density is 107.0M per mm², with no comparable value for the Arc 140V.

Power consumption records show 2300 W for the MI455X and 37 W for the Arc 140V, a 62.2x difference. The MI455X has no power connectors, while the Arc 140V also has no power connectors listed, though the suggested PSU for the MI455X is 2700 W and none is listed for the Arc 140V. The bus interface differs: PCIe 6.0 x16 for the MI455X versus IGP for the Arc 140V. The slot width is EAM Module for the MI455X and IGP for the Arc 140V.

Release dates in the database are 2026-07-22 for the MI455X and 2024-09-23 for the Arc 140V, placing the Intel product earlier in the timeline. The MI455X predecessor is Radeon Instinct, while the Arc 140V predecessor is HD Graphics-M. Neither product has a successor recorded. The MI455X has no launch MSRP, and the Arc 140V also has no launch MSRP in the database.