AMD Instinct MI455X vs Intel Arc Graphics 64EU Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark entries for the AMD Instinct MI455X and the Intel Arc Graphics 64EU. The MI455X has no benchmark scores listed, while the Arc Graphics 64EU has a single recorded score. The absence of overlapping test data means a direct comparison of measured performance is not possible from the database. The 64EU scores 733 in the 3DMark Steel Nomad DX12 test, placing it at the 3rd percentile of all GPUs. Its nearest rivals in the database are the Intel Arc Graphics 32EU and 24EU, both with identical average scores of 733 and a delta of 0 percent, indicating that within this integrated graphics family, execution unit count does not alter this particular result. The AMD Radeon HD 6470M trails at 723, a 1.4 percent deficit, while the NVIDIA GeForce GT 415M leads the 64EU by 2.4 percent with a score of 751.

The MI455X sits at the 50th percentile of all GPUs, but with no recorded benchmark score or rival comparisons, its percentile position comes from unspecified database metrics rather than measured test results. The 64EU delivers 1.946 TFLOPS of FP32 throughput and 3.891 TFLOPS of FP16 throughput at a 2:1 ratio. The MI455X, by contrast, is specified for 157.3 TFLOPS in both FP32 and FP16 at a 1:1 ratio. That is roughly 80 times higher FP32 output on paper, although the two products are not directly comparable in workload scope or physical configuration. The MI455X reports a pixel rate of 0 MPixel/s and a texture rate of 2,457.6 GTexel/s, while the 64EU reports 30.40 GPixel/s and 60.80 GTexel/s. The MI455X has no display outputs, so rasterization throughput is irrelevant to its intended function. The 64EU is an integrated graphics processor, so its pixel and texture rates apply to actual frame rendering.

In memory terms, the MI455X uses 432 GB of HBM4 across a 24576-bit bus, delivering 23.3 TB/s of bandwidth. The 64EU draws from system shared memory, with bandwidth described as system dependent. The MI455X has 32,768 shading units, 1,024 texture mapping units, and zero ROPs. The 64EU has 512 shading units, 32 TMUs, and 16 ROPs. The MI455X therefore has 64 times the shading units and 32 times the TMUs, but no ROPs, consistent with a compute-oriented accelerator that does not drive displays. The 64EU's 16 ROPs support its role as an integrated graphics solution.

The Verdict

The database positions these two products at opposite ends of the GPU spectrum. The AMD Instinct MI455X is a 2 nm TSMC accelerator with a 2300 W TDP, an EAM Module slot width, no power connectors (likely external power delivery), and no display outputs. It is built for dense compute, with 432 GB of HBM4 memory and 157.3 TFLOPS of FP32, and it targets the Instinct (MIx) generation. The Intel Arc Graphics 64EU is a 65 W integrated graphics processor on a 3 nm TSMC node, part of the Arrow Lake-S chip, with system shared memory and motherboard-dependent display outputs. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI455X lists N/A for all three APIs.

Selecting between them depends entirely on the workload. The data indicates the MI455X is intended for server or accelerator environments where massive memory capacity, extreme bandwidth, and compute throughput matter. The 64EU is an integrated solution for desktop platforms where modest graphics output and low power consumption are required. The 64EU's 733 Steel Nomad score and 3rd percentile ranking show it is positioned among entry-level integrated parts, with its nearest rivals being other Intel Arc integrated variants and older discrete mobile GPUs. The MI455X's 50th percentile placement, despite missing benchmark data, suggests it sits in the middle of the database's overall GPU distribution, though no measured evidence supports a performance claim.

Users requiring compute acceleration, large memory pools, and high bandwidth should look to the MI455X based on its specifications. Users needing display output, standard graphics APIs, and low power draw should consider the 64EU. The MI455X has no display outputs and no graphics API support, so it cannot function as a conventional graphics card. The 64EU cannot approach the MI455X's compute resources, but it does not need to, as its role is fundamentally different. The data does not support a direct performance comparison, so any verdict rests on architectural intent rather than measured results.

Architecture Differences

The MI455X uses the CDNA 5.0 architecture on a 2 nm TSMC process, with a chip designated MI450 256CU. The 64EU uses Intel's Xe-LPG architecture on a 3 nm TSMC process, integrated into the Arrow Lake-S chip. The foundry is the same for both, TSMC, but the process nodes differ by one nanometer. Transistor counts diverge sharply: the MI455X packs 320,000 million transistors on a 2990 mm² die, yielding a density of 107.0 million transistors per square millimeter. The 64EU, as part of the broader Arrow Lake-S die, is listed with 17,800 million transistors on a 243 mm² die, for a density of 73.3 million per square millimeter. The MI455X therefore has roughly 18 times the transistor count and a 12 times larger die area, with a higher transistor density.

The MI455X is built around 256 compute units (implied by the chip name MI450 256CU), delivering 32,768 shading units, 1,024 TMUs, and zero ROPs. The 64EU has 512 shading units, 32 TMUs, and 16 ROPs. Neither product lists dedicated ray tracing cores or tensor cores in the database. The MI455X's FP16 throughput matches its FP32 at a 1:1 ratio, indicating equal rate for both formats. The 64EU's FP16 is double its FP32 at a 2:1 ratio, a typical configuration for integrated graphics. The MI455X's texture rate of 2,457.6 GTexel/s is 40 times the 64EU's 60.80 GTexel/s. The MI455X's pixel rate is listed as zero, while the 64EU manages 30.40 GPixel/s.

Memory architecture separates the two completely. The MI455X uses HBM4 with 432 GB capacity, a 24576-bit bus, and 23.3 TB/s bandwidth, with memory clocks at 1900 MHz and 7.6 Gbps effective. The 64EU uses system shared memory, with type, bus width, and bandwidth all listed as system dependent. The MI455X's memory clock is fixed, while the 64EU's memory performance relies entirely on the host platform. The MI455X is a discrete accelerator module with an EAM Module slot width and PCIe 6.0 x16 bus interface. The 64EU is an IGP with a Ring Bus interface, integrated into the processor package. The MI455X has no power connectors, suggesting a backplane or external power solution, while the 64EU has no listed power connector requirements. The MI455X requires a 2700 W suggested PSU, the 64EU has none listed.

Specification Differences

The two products differ across nearly every specification field in the database. The MI455X's base clock is 1000 MHz with a boost of 2400 MHz. The 64EU's base clock is 300 MHz with a boost of 1900 MHz. The MI455X's boost clock is 500 MHz higher, and its base clock is more than three times the 64EU's. Memory clocks are listed only for the MI455X at 1900 MHz with 7.6 Gbps effective; the 64EU's memory clock is system dependent. The MI455X has 432 GB of HBM4, while the 64EU has system shared memory. Bus width is 24576 bit for the MI455X versus system shared for the 64EU. Bandwidth is 23.3 TB/s for the MI455X versus system dependent for the 64EU.

Shading units are 32,768 versus 512, a 64-fold difference. TMUs are 1,024 versus 32, a 32-fold difference. ROPs are 0 versus 16. Pixel rate is 0 MPixel/s versus 30.40 GPixel/s. Texture rate is 2,457.6 GTexel/s versus 60.80 GTexel/s. FP32 is 157.3 TFLOPS versus 1.946 TFLOPS. FP16 is 157.3 TFLOPS versus 3.891 TFLOPS. TDP is 2300 W versus 65 W. Slot width is EAM Module versus IGP. Power connectors are none versus null (no data). Suggested PSU is 2700 W versus null. Bus interface is PCIe 6.0 x16 versus Ring Bus. Display outputs are none versus motherboard dependent. DirectX support is N/A versus 12 Ultimate (12_2). OpenGL is N/A versus 4.6. Vulkan is N/A versus 1.4. The MI455X has no production status listed, while the 64EU is active. Release dates differ: the MI455X is dated 2026-07-22, the 64EU on 2024-10-23. The MI455X's predecessor is Radeon Instinct, the 64EU's is HD Graphics. Neither has a successor listed. Neither has a launch MSRP in the database.

FAQ

Q: Which product has a higher FP32 throughput?

A: The AMD Instinct MI455X is specified for 157.3 TFLOPS of FP32, while the Intel Arc Graphics 64EU delivers 1.946 TFLOPS. The MI455X's FP32 figure is roughly 80 times higher.

Q: Does the MI455X support display outputs?

A: No. The database lists its display outputs as "No outputs," and its pixel rate is 0 MPixel/s. It also has no DirectX, OpenGL, or Vulkan support listed.

Q: What memory does the Intel Arc Graphics 64EU use?

A: The 64EU uses system shared memory. Its memory type, bus width, and bandwidth are all listed as system dependent, meaning performance varies with the host platform.

Q: How does the Intel Arc Graphics 64EU compare to its nearest rivals?

A: The 64EU scores 733 in 3DMark Steel Nomad DX12. The Intel Arc Graphics 32EU and 24EU both score 733 with a 0 percent delta. The AMD Radeon HD 6470M scores 723, which is 1.4 percent lower, and the NVIDIA GeForce GT 415M scores 751, which is 2.4 percent higher.

Q: What is the transistor density difference between the two?

A: The MI455X has a transistor density of 107.0 million per square millimeter on a 2990 mm² die with 320,000 million transistors. The 64EU has 73.3 million per square millimeter on a 243 mm² die with 17,800 million transistors.

Q: Which product supports DirectX 12 Ultimate?

A: The Intel Arc Graphics 64EU supports DirectX 12 Ultimate (12_2), along with OpenGL 4.6 and Vulkan 1.4. The AMD Instinct MI455X lists N/A for all three graphics APIs.