Intel Arc G3 vs NVIDIA B300 SXM6 AC Comparison

Intel Arc G3 and NVIDIA B300 SXM6 AC occupy opposite ends of the hardware spectrum. The Arc G3 is a 25 W integrated graphics processor built for mobile devices, while the B300 SXM6 AC is a 1100 W server module designed for massive compute workloads. Benchmark data confirms the B300 dominates in raw performance, but the Arc G3 delivers capabilities that matter in its own segment, including modern API support and a low-power integrated design.

Where Each One Wins

The Intel Arc G3 wins in the portable and low-power segment. Its 25 W TDP allows operation without any power connectors, and its bus interface is listed as IGP, meaning it is built directly into a processor package. The display outputs are described as "Portable Device Dependent," which indicates this GPU is intended for laptops and compact systems where discrete graphics would be impractical. Its DirectX 12 Ultimate (12_2) support and Vulkan 1.4 compatibility provide modern graphics API coverage that the B300 entirely lacks, as the NVIDIA part lists N/A for DirectX, OpenGL, and Vulkan.

The NVIDIA B300 SXM6 AC wins in every measurable compute category. Its Geekbench OpenCL score of 369831 places it in the 100th percentile of all GPUs in the database, while the Arc G3 sits at the 50th percentile with no recorded benchmark score. The B300 delivers 76.99 TFLOPS of FP32 performance versus 6.144 TFLOPS for the Arc G3, a factor of roughly 12.5x. Memory capacity is also incomparable: the B300 offers 288 GB of HBM3e across an 8192-bit bus with 8.19 TB/s of bandwidth, while the Arc G3 uses system shared memory with bandwidth dependent on the host platform.

The B300 also leads in texture and pixel throughput. Its texture rate of 1,202.9 GTexel/s dwarfs the Arc G3's 96.00 GTexel/s, and its pixel rate of 48.77 GPixel/s slightly exceeds the Arc G3's 48.00 GPixel/s. The data shows no benchmark category where the Arc G3 beats the B300 in raw output, but the Arc G3's advantage lies in its integration, API support, and power envelope.

Architecture Differences

The two GPUs come from different manufacturers, foundries, and process nodes. Intel produces the Arc G3 on a 3 nm node at Intel's own foundry, using the Panther Lake chip with Xe3-LPG architecture. NVIDIA manufactures the B300 on a 5 nm node at TSMC, using the GB110 chip with Blackwell Ultra architecture. The B300 packs 208,000 million transistors on a 1628 mm² die, achieving a transistor density of 127.8M per mm². The Arc G3's transistor count and die size are listed as unknown.

Core configurations differ sharply. The Arc G3 has 1280 shading units, 40 texture mapping units, 20 ROPs, and 10 ray tracing cores. The B300 has 18944 shading units, 592 TMUs, and 24 ROPs, with no listed ray tracing core count but 592 tensor cores. This means the B300 has roughly 14.8x more shading units and 14.8x more TMUs than the Arc G3, while the Arc G3 has more ROPs per shading unit and dedicated ray tracing hardware.

Clock behavior also differs. The Arc G3 runs at a 300 MHz base clock and boosts to 2400 MHz, which is a wide boost range for power management. The B300 runs at a 1665 MHz base and boosts to 2032 MHz, a much tighter range. Memory architecture is fundamentally different: the Arc G3 uses system shared memory with no dedicated VRAM, while the B300 uses 288 GB of HBM3e with 8.19 TB/s bandwidth across an 8192-bit interface. The B300's memory clock is listed as 2000 MHz with 8 Gbps effective data rate.

API support separates the two completely. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B300 lists N/A for all three APIs, indicating it is not designed for graphics rendering in the conventional sense but for compute and AI workloads through CUDA and similar frameworks. The B300 has no display outputs, while the Arc G3's outputs depend on the portable device it is integrated into.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA B300 SXM6 AC delivers 76.99 TFLOPS of FP32 performance, compared to the Intel Arc G3's 6.144 TFLOPS. The B300 is approximately 12.5x faster in this metric.

Q: Does the Intel Arc G3 support modern graphics APIs?

A: Yes. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B300 lists N/A for all three graphics APIs.

Q: What memory configuration does each GPU use?

A: The Arc G3 uses system shared memory with system-dependent bandwidth. The B300 uses 288 GB of HBM3e memory with an 8192-bit bus and 8.19 TB/s of bandwidth.

Q: How does the B300 compare to its nearest rivals in benchmark scores?

A: The B300 scores 369831 in Geekbench OpenCL. It is 7% ahead of the NVIDIA B200 (345482), 10.4% ahead of the NVIDIA H200 NVL (334891), 16.3% ahead of the AMD Instinct MI300X (317994), and 25% ahead of the NVIDIA L40S (295763).

Q: What is the power requirement for each GPU?

A: The Arc G3 has a 25 W TDP and requires no power connectors. The B300 has a 1100 W TDP and requires a 1500 W suggested power supply.

Q: Which GPU has tensor cores?

A: The B300 has 592 tensor cores. The Arc G3 does not list a tensor core count.

Specification Differences

The two GPUs differ in nearly every specification field. The Arc G3 uses a 3 nm Intel process with the Panther Lake chip and Xe3-LPG architecture, while the B300 uses a 5 nm TSMC process with the GB110 chip and Blackwell Ultra architecture. Transistor count is unknown for the Arc G3, while the B300 has 208,000 million transistors on a 1628 mm² die with 127.8M transistors per mm².

Clock speeds: the Arc G3 has a 300 MHz base and 2400 MHz boost; the B300 has a 1665 MHz base and 2032 MHz boost. Memory: the Arc G3 uses system shared memory; the B300 has 288 GB HBM3e, 8192-bit bus, 8.19 TB/s bandwidth, and a 2000 MHz memory clock with 8 Gbps effective data rate.

Compute units: the Arc G3 has 1280 shading units, 40 TMUs, 20 ROPs, and 10 ray tracing cores; the B300 has 18944 shading units, 592 TMUs, 24 ROPs, and 592 tensor cores. The Arc G3 lists no tensor cores.

Rates and throughput: the Arc G3 achieves 48.00 GPixel/s and 96.00 GTexel/s; the B300 achieves 48.77 GPixel/s and 1,202.9 GTexel/s. FP32: 6.144 TFLOPS for the Arc G3, 76.99 TFLOPS for the B300. FP16: 12.29 TFLOPS (2:1) for the Arc G3, 76.99 TFLOPS (1:1) for the B300.

Power and form factor: the Arc G3 has a 25 W TDP, IGP slot width, no power connectors, and an IGP bus interface. The B300 has a 1100 W TDP, SXM Module slot width, a 1500 W suggested PSU, and a PCIe 6.0 x16 bus interface.

Other differences: the Arc G3 has portable-device-dependent display outputs; the B300 has no outputs. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; the B300 lists N/A for all. Release dates differ: the B300 released on 2025-09-10, while the Arc G3 is dated 2026-05-31. The B300 lists its predecessor as Server Hopper and successor as Server Rubin; the Arc G3 lists none.

Head-to-Head Benchmarks

No direct head-to-head benchmark results exist between the Arc G3 and the B300 in the database. However, the available individual benchmark data provides clear comparisons. The B300's Geekbench OpenCL score of 369831 places it at the 100th percentile of all GPUs. The Arc G3 has no recorded benchmark scores and sits at the 50th percentile, which indicates it is a mid-range performer in the broader database but cannot be compared numerically to the B300 without a shared test.

The largest performance gap appears in texture rate. The B300's 1,202.9 GTexel/s is 12.5x the Arc G3's 96.00 GTexel/s. FP32 compute shows a similar ratio: 76.99 TFLOPS versus 6.144 TFLOPS, also approximately 12.5x. FP16 performance is closer in relative terms but still lopsided: the B300 delivers 76.99 TFLOPS at 1:1 ratio, while the Arc G3 delivers 12.29 TFLOPS at 2:1 ratio, meaning the Arc G3's FP16 figure relies on a packed math path that halves throughput per clock.

Pixel rate is the closest metric. The B300's 48.77 GPixel/s exceeds the Arc G3's 48.00 GPixel/s by only 1.6%. This near parity suggests the Arc G3's 20 ROPs at a 2400 MHz boost clock compensate for the B300's higher ROP count of 24 but lower boost clock of 2032 MHz.

The B300's dominance extends to its nearest rivals, which provides context for its standing. The B300 leads the NVIDIA B200 by 7% (369831 versus 345482), the NVIDIA H200 NVL by 10.4% (369831 versus 334891), the AMD Instinct MI300X by 16.3% (369831 versus 317994), and the NVIDIA L40S by 25% (369831 versus 295763). These deltas confirm the B300 is not merely faster than the Arc G3; it is the top performer in its own class, sitting at the 100th percentile against all GPUs in the database.

The Verdict

The data supports a clear split. The NVIDIA B300 SXM6 AC is the choice for compute-heavy server workloads. Its 76.99 TFLOPS FP32, 288 GB HBM3e memory, 8.19 TB/s bandwidth, and 592 tensor cores make it a purpose-built accelerator for AI training and inference, scientific computing, and high-throughput data processing. Its 100th percentile standing and margins of 7% to 25% over its nearest rivals confirm it leads its segment. The 1100 W TDP and 1500 W suggested PSU are consistent with a data center module, not a consumer part.

The Intel Arc G3 is the choice for portable systems that need modern graphics support. Its 25 W TDP, IGP form factor, and no power connector requirement make it suitable for thin-and-light laptops. Its DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 support give it full-featured graphics API coverage, which the B300 cannot offer. The 10 ray tracing cores provide hardware-accelerated ray tracing, and the 2400 MHz boost clock shows headroom for burst performance despite the low base clock. Its 50th percentile standing indicates it is a mid-tier integrated GPU, which is appropriate for its role.

Users who need raw compute, massive memory capacity, and tensor core acceleration should select the B300. Users who need an integrated GPU with modern API support and minimal power draw should select the Arc G3. The two products do not compete for the same socket, power budget, or workload, and the benchmark data reflects that separation clearly.