Intel Arc G3 vs Intel Arc Pro B65 Comparison

Head-to-Head Benchmarks

The recorded database contains no head-to-head benchmark entries for the Intel Arc G3 versus the Intel Arc Pro B65. With zero benchmark results captured for either part, and both GPUs sitting at the 50th percentile among all graphics cards in the database, there are no direct performance deltas to report. The Arc G3 shows an average benchmark score of 0, and the Arc Pro B65 also shows an average benchmark score of 0, meaning neither has accumulated any measured performance data points.

Without measured scores, the comparison must rest entirely on the specification sheets. The Arc Pro B65 delivers 12.29 TFLOPS of FP32 compute, exactly double the 6.144 TFLOPS of the Arc G3. In FP16, the Pro B65 reaches 24.58 TFLOPS (2:1 ratio), again precisely double the G3's 12.29 TFLOPS. Pixel throughput follows the same pattern: 192.0 GPixel/s for the Pro B65 versus 48.00 GPixel/s for the G3, a 4x gap. Texture rate shows 384.0 GTexel/s on the Pro B65 versus 96.00 GTexel/s on the G3, also a 4x difference. These arithmetic relationships come directly from the listed values, and they indicate the Pro B65 holds a consistent 2x to 4x advantage across raw throughput metrics.

The shading unit count supports this: 2560 shading units on the Pro B65 versus 1280 on the G3. Texture mapping units number 160 versus 40, and raster operation units number 80 versus 20. Ray tracing cores are 20 on the Pro B65 and 10 on the G3. Every computational block scales by a factor of two or four, which aligns with the TFLOPS and pixel/texture rate figures.

Clock behavior differs sharply. The Arc G3 runs at a 300 MHz base clock with a 2400 MHz boost. The Arc Pro B65 has a flat 2400 MHz clock for both base and boost. The G3 therefore relies on a large boost multiplier, while the Pro B65 sustains its full clock continuously. Memory clocks are not comparable because the G3 uses system shared memory, while the Pro B65 uses dedicated GDDR6 at 2375 MHz with 19 Gbps effective speed.

The power envelope explains much of the performance split. The G3 is rated at 25 W, while the Pro B65 draws 200 W, an 8x difference. The Pro B65 requires a 550 W suggested PSU and a single 8-pin power connector, while the G3 has no power connectors and functions as an integrated graphics processor (IGP). The G3 is an IGP with a slot width of "IGP," whereas the Pro B65 is a dual-slot add-in card using PCIe 5.0 x16.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The Intel Arc Pro B65 delivers 12.29 TFLOPS of FP32 performance, which is exactly twice the 6.144 TFLOPS of the Intel Arc G3.

Q: Do both cards support the same DirectX version?

A: Yes, both the Arc G3 and Arc Pro B65 support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: How much memory does each GPU have?

A: The Arc Pro B65 has 32 GB of GDDR6 memory on a 256-bit bus with 608.0 GB/s bandwidth. The Arc G3 uses system shared memory, with bandwidth listed as system dependent.

Q: What is the process node for each chip?

A: The Arc G3 uses a 3 nm process node fabricated by Intel, while the Arc Pro B65 uses a 5 nm process node fabricated by TSMC.

Q: What are the clock speeds?

A: The Arc G3 has a 300 MHz base clock and a 2400 MHz boost clock. The Arc Pro B65 has a 2400 MHz base clock and a 2400 MHz boost clock.

Q: Which card has more ray tracing cores?

A: The Arc Pro B65 has 20 ray tracing cores, while the Arc G3 has 10 ray tracing cores.

The Verdict

The data indicates a clear tier separation. The Intel Arc Pro B65 is the dominant part in every measured computational category: double the FP32 and FP16 throughput, quadruple the pixel rate and texture rate, double the shading units, double the ray tracing cores, and 32 GB of dedicated GDDR6 memory with 608.0 GB/s bandwidth. It also holds a flat 2400 MHz clock across base and boost, meaning sustained performance is guaranteed.

The Intel Arc G3 is an integrated graphics processor built for a different purpose. Its 25 W power envelope, system shared memory, and lack of any power connector or slot width beyond "IGP" place it in the mobile or compact device segment. Its 300 MHz base clock with a 2400 MHz boost suggests aggressive power management, ramping up only when needed. The 3 nm Intel process node gives it a density advantage in the manufacturing process, but the Pro B65 counters with a larger 272 mm² die and 19,600 million transistors.

For anyone needing dedicated graphics performance, the Pro B65 is the only choice from the recorded data. For anyone requiring an integrated solution that consumes 25 W and uses system memory, the G3 exists in a separate category entirely. The benchmark database shows no overlapping use case where the G3 competes directly with the Pro B65. The G3's percentile rank of 50 and the Pro B65's percentile rank of 50 are identical, but that reflects the absence of benchmark data, not comparable performance.

Specification Differences

The two GPUs differ in nearly every measurable specification. The Arc G3 uses a 3 nm process node from Intel, while the Arc Pro B65 uses a 5 nm process node from TSMC. The Pro B65 has a transistor count of 19,600 million and a die size of 272 mm², with a transistor density of 72.1M per mm². The G3 lists transistors and die size as unknown.

Clock speeds differ substantially. The G3 has a 300 MHz base and 2400 MHz boost. The Pro B65 has a 2400 MHz base and 2400 MHz boost. Memory configuration is entirely different: the G3 uses system shared memory with system dependent bandwidth, while the Pro B65 uses 32 GB of GDDR6 on a 256-bit bus with 608.0 GB/s bandwidth and a 2375 MHz memory clock (19 Gbps effective).

Compute resources scale by factors of two or four. The G3 has 1280 shading units, 40 TMUs, 20 ROPs, and 10 RT cores. The Pro B65 has 2560 shading units, 160 TMUs, 80 ROPs, and 20 RT cores. Pixel rate is 48.00 GPixel/s versus 192.0 GPixel/s. Texture rate is 96.00 GTexel/s versus 384.0 GTexel/s. FP32 is 6.144 TFLOPS versus 12.29 TFLOPS. FP16 is 12.29 TFLOPS versus 24.58 TFLOPS.

Power and physical design diverge completely. The G3 is rated at 25 W, has no power connectors, a slot width of "IGP," and a bus interface of "IGP." The Pro B65 is rated at 200 W, uses a single 8-pin power connector, requires a 550 W suggested PSU, is dual-slot, and uses PCIe 5.0 x16. Display outputs are "portable device dependent" for the G3 and 4x DisplayPort 2.1 for the Pro B65.

Release dates differ by two months. The Pro B65 was released on 2026-03-31, while the G3 was released on 2026-05-31. Both are listed as active production status.

Architecture Differences

The Arc G3 uses the Xe3-LPG architecture on the Panther Lake chip, belonging to the Arc Graphics-M (Panther Lake) generation. The Arc Pro B65 uses the Xe2-HPG architecture on the BMG-G21 chip, belonging to the Battlemage (Pro Series) generation. These are distinct architecture families: Xe3-LPG is a low-power graphics architecture designed for integrated use, while Xe2-HPG is a high-performance gaming and professional architecture designed for discrete cards.

The G3's architecture is built for power efficiency, evidenced by its 25 W TDP and system shared memory. The Pro B65's architecture is built for throughput, with 32 GB of dedicated GDDR6, a 256-bit memory bus, and a 200 W power envelope. The foundry choice differs: Intel fabricates the G3 on its own 3 nm process, while TSMC fabricates the Pro B65 on a 5 nm process.

Ray tracing support exists on both, but the Pro B65 has double the RT cores (20 versus 10). Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so the API feature set is identical. The Pro B65's larger die (272 mm² versus unknown for the G3) and higher transistor count (19,600 million versus unknown) reflect its discrete design with dedicated memory controllers and display outputs.

The G3's architecture integrates memory access through the system, making bandwidth dependent on the host platform. The Pro B65's architecture includes a dedicated memory interface with fixed 608.0 GB/s bandwidth. These architectural choices dictate their respective roles: the G3 for compact, low-power devices, and the Pro B65 for workstation or high-performance desktop systems requiring sustained throughput.

Where Each One Wins

The Intel Arc Pro B65 wins in every raw performance category recorded. It doubles the FP32 throughput, doubles FP16 throughput, quadruples pixel fill rate, quadruples texture fill rate, and doubles the shading unit count. For compute-heavy workloads, rendering tasks, or any application that scales with TFLOPS, the Pro B65 is the clear winner from the specification data.

The Pro B65's 32 GB of GDDR6 memory with 608.0 GB/s bandwidth gives it a decisive advantage in memory-bound scenarios. Large datasets, high-resolution textures, or multi-display outputs (4x DisplayPort 2.1) all favor the discrete card. Its flat 2400 MHz base clock ensures sustained performance without boost variability.

The Intel Arc G3 wins in power efficiency and integration. Its 25 W TDP is 8x lower than the Pro B65's 200 W. It requires no power connectors, no separate PSU recommendation, and fits as an IGP. For portable devices or compact systems where power draw and physical space are constrained, the G3 is the only viable option from the two. Its 3 nm process node from Intel also indicates a more advanced manufacturing technology, though the database does not include density or die size figures for the G3.

The G3 also wins on release timing flexibility only in the sense that it launched later (2026-05-31 versus 2026-03-31), but the database does not include any performance data to suggest an advantage from the later date. The Pro B65's 550 W suggested PSU and dual-slot footprint make it unsuitable for low-power or small-form-factor builds, while the G3's system shared memory makes it unsuitable for high-bandwidth workloads.

In practical terms, the Pro B65 serves workloads that demand sustained compute, large memory pools, and high bandwidth. The G3 serves workloads that demand minimal power, integrated graphics, and system-level memory sharing. There is no overlap in the recorded data where the G3 outperforms the Pro B65, and there is no scenario where the Pro B65 can operate within the G3's power envelope.