Intel Arc B390 vs Intel Arc Pro B70 Comparison

FAQ

Q: What is the performance difference between the Intel Arc B390 and the Intel Arc Pro B70?

A: The database shows no head-to-head benchmark results between the two. The Arc B390 has a recorded 3DMark Steel Nomad DX12 score of 1482, while the Arc Pro B70 has no benchmark entries in the database at this time.

Q: How does the Arc B390 compare to other GPUs in the database?

A: The Arc B390 sits at the 9th percentile of all GPUs. Its nearest rivals are the NVIDIA GeForce GT 520MX (1.3% behind), the NVIDIA GeForce 800M (1.5% behind), the NVIDIA GeForce GT 625 OEM (2.5% behind), and the NVIDIA GeForce GT 710 (2.7% behind).

Q: What are the memory specifications of each card?

A: The Arc B390 uses system shared memory with system-dependent bandwidth. The Arc Pro B70 has 32 GB of GDDR6 memory on a 256-bit bus, delivering 608.0 GB/s of bandwidth.

Q: Which card has a higher boost clock?

A: The Arc Pro B70 boosts to 2800 MHz, compared to 2500 MHz for the Arc B390. The base clocks differ substantially: 2280 MHz for the Pro B70 versus 300 MHz for the B390.

Q: Are both cards based on the same architecture?

A: No. The Arc B390 uses the Xe3-LPG architecture on Intel's 3 nm Panther Lake chip. The Arc Pro B70 uses the Xe2-HPG architecture on TSMC's 5 nm process with the BMG-G31 chip.

Q: What is the physical form factor of each card?

A: The Arc B390 is an integrated graphics processor (IGP) with no power connectors and no dedicated slot width. The Arc Pro B70 is a dual-slot card measuring 267 mm in length, 110 mm in height, and 39 mm in width, requiring a single 8-pin power connector.

The Verdict

The data indicates these are fundamentally different classes of hardware. The Intel Arc B390 is an integrated GPU for mobile platforms, drawing 80 W and sharing system memory. Its 3DMark Steel Nomad score of 1482 places it at the 9th percentile, within 2.7% of entry-level discrete GPUs like the GeForce GT 710. This is a basic graphics solution for portable systems.

The Intel Arc Pro B390's counterpart, the Arc Pro B70, is a professional workstation card. It delivers 22.94 TFLOPS of FP32 performance, nearly three times the B390's 7.680 TFLOPS. It carries 32 GB of dedicated GDDR6 memory with 608.0 GB/s of bandwidth, versus the B390's shared memory arrangement. The Pro B70 sits at the 50th percentile in the database, a massive gap from the B390's 9th percentile.

The launch MSRP for the Arc Pro B70 is 949 USD. The B390 has no recorded launch MSRP, as it ships as part of a mobile platform. Users who need sustained compute throughput, high-bandwidth memory, and professional display outputs (1x HDMI 2.1a, 3x DisplayPort 2.1) would select the Pro B70. Users constrained to an integrated solution with no add-in card slot would rely on the B390. The data shows no scenario where the B390 outperforms the Pro B70 in any measurable specification.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty. No direct comparison tests exist between the Intel Arc B390 and the Intel Arc Pro B70. However, the individual recorded data points provide a basis for analysis.

The Arc B390's only benchmark result is 1482 in 3DMark Steel Nomad DX12. That score places it 1.3% above the GeForce GT 520MX's 1463, 1.5% above the GeForce 800M's 1460, 2.5% above the GT 625 OEM's 1446, and 2.7% above the GT 710's 1443. These are extremely narrow margins, indicating the B390 performs at the level of decade-old entry-level discrete GPUs.

The Arc Pro B70 has no benchmark scores recorded. Its theoretical compute figures, however, are far higher. The FP32 throughput of 22.94 TFLOPS represents a 199% increase over the B390's 7.680 TFLOPS. The pixel rate of 358.4 GPixel/s is 497% higher than the B390's 60.00 GPixel/s. The texture rate of 716.8 GTexel/s exceeds the B390's 120.0 GTexel/s by a factor of 5.97.

The memory bandwidth differential is even more pronounced. The Pro B70's 608.0 GB/s is entirely separate from the B390's system-dependent shared memory, which has no fixed bandwidth figure in the database. The Pro B70 also has a dedicated 32 GB frame buffer versus the B390's shared allocation.

The rasterization resources tell a similar story. The Pro B70 has 4096 shading units, 256 texture mapping units, and 128 render output units. The B390 has 1536 shading units, 48 TMUs, and 24 ROPs. The Pro B70's ray tracing core count of 32 is nearly triple the B390's 12.

Specification Differences

The two cards differ in nearly every measurable specification. The Arc B390 operates at a 300 MHz base clock and 2500 MHz boost. The Arc Pro B70 runs at 2280 MHz base and 2800 MHz boost, meaning its minimum clock exceeds the B390's maximum clock by 1520 MHz.

Memory is the starkest differentiator. The B390 uses system shared memory with no dedicated capacity, bus width, or bandwidth. The Pro B70 has 32 GB of GDDR6 on a 256-bit bus with 608.0 GB/s bandwidth and 2375 MHz memory clock (19 Gbps effective).

The compute units scale accordingly. The Pro B70's 4096 shading units are 2.67 times the B390's 1536. The TMU count of 256 versus 48 represents a 5.33x difference. The ROP count of 128 versus 24 is a 5.33x difference as well. Ray tracing cores number 32 on the Pro B70 versus 12 on the B390.

The power envelope differs by 150 W: 230 W for the Pro B70 versus 80 W for the B390. The Pro B70 requires a 550 W suggested power supply and a single 8-pin connector. The B390 uses no power connectors and is an IGP with no bus interface beyond the integrated graphics path.

Physical dimensions also separate them. The Pro B70 is a dual-slot card measuring 267 mm by 110 mm by 39 mm. The B390 is an integrated solution with no dimensions recorded. The Pro B70 connects via PCIe 5.0 x16, while the B390 uses an IGP interface.

The display outputs differ: the Pro B70 has 1x HDMI 2.1a and 3x DisplayPort 2.1, while the B390's outputs are portable-device dependent. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Architecture Differences

The Arc B390 is built on Intel's Xe3-LPG architecture, part of the Panther Lake chip, fabricated on Intel's 3 nm process. This is a low-power graphics architecture designed for integration into mobile processors. The "LPG" designation indicates low-power graphics, optimized for efficiency rather than raw throughput.

The Arc Pro B70 uses the Xe2-HPG architecture, part of the Battlemage family for professional workstations. This is a high-performance graphics architecture built on TSMC's 5 nm process. The die size is 368 mm², a substantial physical footprint for a workstation GPU.

The B390's Panther Lake chip is an integrated processor package where the GPU shares the die with CPU cores. Its memory controller interfaces with system RAM, making memory performance dependent on the host platform. The Pro B70's BMG-G31 chip is a dedicated discrete GPU with its own 32 GB of GDDR6 memory on a 256-bit bus.

The B390 uses the Xe3-LPG architecture, which is the third generation of Intel's Xe graphics with low-power optimizations. The Pro B70 uses Xe2-HPG, the second generation of the high-performance Xe architecture. These are different design lineages targeting different market segments.

The transistor counts are unknown for both chips. The B390's die size is also unrecorded. The Pro B70's 368 mm² die size on TSMC's 5 nm process indicates a large, complex GPU. The B390's 3 nm process from Intel suggests a newer fabrication technology but with far fewer active compute units.

The B390's 12 ray tracing cores and 1536 shading units reflect an architecture scaled for power efficiency. The Pro B70's 32 ray tracing cores and 4096 shading units reflect an architecture scaled for compute density. The FP16 performance ratio is identical on both (2:1), but the absolute figures differ: 15.36 TFLOPS for the B390 versus 45.88 TFLOPS for the Pro B70.

Both architectures support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The architectural differences manifest in raw resource counts, clock behavior, and memory subsystem rather than in feature support.