Intel Arc A380E vs Intel Arc Pro B65 Comparison

Intel Arc A380E and Intel Arc Pro B65 are two professional graphics solutions from Intel, separated by a full architecture generation. The A380E is an Alchemist-era part built for embedded and edge applications, while the Pro B65 is a Battlemage-generation workstation card. Both cards target professional workloads, but their silicon, memory subsystems, and power envelopes place them in very different performance classes. This analysis draws exclusively on the recorded specifications and structural data in the database.

Where Each One Wins

The Intel Arc A380E wins in scenarios where physical footprint, power draw, and system integration flexibility are the primary constraints. Its 75 W TDP requires no auxiliary power connectors, fitting into systems with a 250 W suggested PSU. The card occupies a single slot, measures 254 mm in length, and uses a PCIe 4.0 x8 interface. These characteristics make it suitable for compact industrial chassis, media servers, or multi-GPU arrays where space and thermal headroom are limited. The A380E’s 4x DisplayPort 2.0 outputs provide multi-display capability without requiring high-bandwidth interconnects.

The Intel Arc Pro B65 wins decisively in raw compute and memory-bound workloads. Its 12.29 TFLOPS FP32 throughput is exactly three times the A380E’s 4.096 TFLOPS. The B65’s 32 GB GDDR6 memory over a 256-bit bus delivers 608.0 GB/s of bandwidth, compared to the A380E’s 6 GB and 186.0 GB/s. This translates to direct advantages in large dataset processing, high-resolution rendering, AI inference with substantial model footprints, and any task where memory capacity or bandwidth becomes the limiting factor. The B65 also carries a PCIe 5.0 x16 interface, doubling the lane count and moving to a newer bus standard, which benefits data transfer from host memory.

The architecture generation gap is significant. The A380E uses Xe-HPG architecture on a 6 nm TSMC process, while the B65 uses Xe2-HPG on a 5 nm TSMC process. The newer process node allows the B65 to pack 19,600 million transistors into a 272 mm² die, achieving a transistor density of 72.1M per mm². The A380E contains 7,200 million transistors on a 157 mm² die with a density of 45.9M per mm². The B65’s architectural improvements are not just about transistor count; the Xe2-HPG design delivers higher per-core efficiency and additional hardware resources, including 20 ray tracing cores versus 8, and 2560 shading units versus 1024.

Architecture Differences

The most fundamental difference lies in the chip design. The A380E is built on the DG2-128 die, part of the Alchemist generation (Arc 3 family). The B65 uses the BMG-G21 die from the Battlemage generation (Pro Series). Alchemist was Intel’s first discrete GPU architecture, while Battlemage represents a substantial redesign. This is reflected in the process node: TSMC 6 nm for Alchemist versus TSMC 5 nm for Battlemage. The smaller node enables higher clock speeds and better power efficiency. The B65 runs at a 2400 MHz base and boost clock, while the A380E operates at 2000 MHz for both base and boost.

Memory architecture differs substantially. The A380E uses 6 GB of GDDR6 on a 96-bit bus, with memory clocked at 1937 MHz (15.5 Gbps effective). The B65 uses 32 GB of GDDR6 on a 256-bit bus, with memory at 2375 MHz (19 Gbps effective). The bus width quadruples from 96-bit to 256-bit, and the effective speed increases, resulting in a 3.27x improvement in raw bandwidth. The capacity difference is even larger: 32 GB versus 6 GB, a 5.33x increase. This positions the B65 for workloads that require large in-memory scenes, such as 3D rendering with complex geometry and high-resolution textures, or GPU-accelerated databases.

Compute resource allocation also diverges sharply. The A380E has 1024 shading units, 64 texture mapping units, and 32 render output units. The B65 has 2560 shading units, 160 TMUs, and 80 ROPs. Pixel fill rate jumps from 64.00 GPixel/s to 192.0 GPixel/s, and texture fill rate from 128.0 GTexel/s to 384.0 GTexel/s. Ray tracing hardware scales from 8 cores to 20 cores. FP16 performance doubles relative to FP32 in both cards, but the absolute numbers are 8.192 TFLOPS for the A380E versus 24.58 TFLOPS for the B65.

Physical and power characteristics are also part of the architecture story. The A380E is single-slot, 254 mm long, 127 mm tall, and 20 mm wide, with no power connector. The B65 is dual-slot, requires a single 8-pin power connector, and has a 200 W TDP. The suggested PSU rating scales from 250 W to 550 W. The A380E uses PCIe 4.0 x8, while the B65 uses PCIe 5.0 x16. Display output generation also differs: the A380E ships with DisplayPort 2.0, the B65 with DisplayPort 2.1. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The Verdict

The data places these cards in separate segments. The Intel Arc A380E is an end-of-life product designed for low-power embedded systems. Its 75 W draw, no power connectors, and compact dimensions make it suitable for passive or low-noise environments. It delivers 4.096 TFLOPS FP32, which is sufficient for basic 3D acceleration, video decode, and light compute tasks. The 6 GB memory and 186.0 GB/s bandwidth limit its usefulness for large models or high-resolution textures.

The Intel Arc Pro B65 is an active product with a 200 W TDP, dual-slot cooler, and 8-pin power connector. It delivers 12.29 TFLOPS FP32, 32 GB memory, and 608.0 GB/s bandwidth. These figures indicate a card aimed at professional rendering, simulation, and AI workloads that require both compute throughput and memory capacity. The PCIe 5.0 x16 interface reduces data transfer bottlenecks. The B65’s 20 ray tracing cores also make it more capable for real-time visualization workflows.

The choice is straightforward based on the data. Systems constrained by power, space, or existing 250 W PSUs should use the A380E. Systems that need maximum compute and memory throughput, and can accommodate a 550 W PSU and dual-slot card, should use the B65. There is no overlap in performance class; the B65 is larger, faster, and newer in every measurable specification except power draw and physical size.

FAQ

Q: Which card has higher FP32 compute performance?

A: The Intel Arc Pro B65 delivers 12.29 TFLOPS FP32, which is exactly three times the 4.096 TFLOPS of the Intel Arc A380E.

Q: How much memory bandwidth does each card provide?

A: The A380E provides 186.0 GB/s over a 96-bit bus with 6 GB GDDR6. The B65 provides 608.0 GB/s over a 256-bit bus with 32 GB GDDR6.

Q: What are the power requirements for each card?

A: The A380E has a 75 W TDP, no power connectors, and a suggested PSU of 250 W. The B65 has a 200 W TDP, requires one 8-pin power connector, and a suggested PSU of 550 W.

Q: Are the architectural generations different?

A: Yes. The A380E uses the DG2-128 chip with Xe-HPG architecture from the Alchemist generation. The B65 uses the BMG-G21 chip with Xe2-HPG architecture from the Battlemage generation.

Q: Which card supports newer display outputs?

A: The B65 supports DisplayPort 2.1, while the A380E supports DisplayPort 2.0. Both cards have four DisplayPort outputs.

Q: What is the transistor density difference?

A: The A380E has a transistor density of 45.9M per mm² on a 157 mm² die. The B65 has a density of 72.1M per mm² on a 272 mm² die.

Head-to-Head Benchmarks

No synthetic benchmark scores are recorded in the database for either card, so comparisons must rely on specification-derived metrics. The most decisive difference is memory bandwidth. The B65’s 608.0 GB/s is 3.27 times the A380E’s 186.0 GB/s. This ratio directly affects any workload that streams large amounts of data, such as texture-heavy rendering or large matrix operations.

Compute throughput shows a similar gap. The B65’s FP32 output of 12.29 TFLOPS versus 4.096 TFLOPS represents a 200% advantage. FP16 follows the same pattern: 24.58 TFLOPS versus 8.192 TFLOPS, also a 200% advantage. These numbers indicate that the B65 can complete the same compute workload in roughly one-third of the time, assuming the workload is compute-bound and scales linearly.

Pixel and texture fill rates amplify the difference. The B65’s 192.0 GPixel/s is three times the A380E’s 64.00 GPixel/s. Texture fill rate is 384.0 GTexel/s versus 128.0 GTexel/s, again a 3x ratio. This makes the B65 more suitable for high-resolution, multi-sample anti-aliased rendering.

Memory capacity is the largest single gap. The B65’s 32 GB is 5.33 times the A380E’s 6 GB. For workloads that require holding an entire dataset or scene in VRAM, the A380E will fail to load or require tiling, while the B65 can handle the data in one pass. The bus width difference (256-bit versus 96-bit) compounds the capacity advantage with higher throughput.

Clock speeds also differ, but they are not the primary driver. The B65 runs at 2400 MHz, 20% higher than the A380E’s 2000 MHz. However, the B65’s performance advantage comes mostly from having 2.5 times the shading units, 2.5 times the TMUs, and 2.5 times the ROPs. The higher clock adds a modest multiplier on top of those resource increases.

Ray tracing capability is substantially different. The B65 has 20 RT cores versus 8 on the A380E, a 2.5x increase. This suggests better performance in ray-traced workloads, though the database does not include specific RT benchmark scores.

The card’s interface also matters for system-level throughput. The A380E uses PCIe 4.0 x8, which provides half the lanes of a full x16 slot. The B65 uses PCIe 5.0 x16, which offers both more lanes and a newer standard. Data transfer between the GPU and host memory will be significantly faster on the B65, which can become a bottleneck for workloads that frequently access system memory.

In summary, every computational metric in the database favors the B65 by a factor of at least 2.5x, with memory capacity showing a 5.33x advantage. The A380E retains wins only in power draw (75 W versus 200 W), physical size (single-slot versus dual-slot), and power connector requirements (none versus one 8-pin). These are integration constraints, not performance benefits.