Intel BMG-G31 with 27.7 billion transistors on 368 mm² die
PC Games Hardware says Intel has now disclosed the missing physical specs for BMG-G31, the larger Battlemage graphics chip that finally reached market through the Arc Pro B70 and Arc Pro B65 workstation cards. According to PCGH, BMG-G31 contains 27.7 billion transistors and measures 368 mm², with production handled by TSMC on its 5nm node.
That places BMG-G31 well above BMG-G21, which PCGH lists at 19.6 billion transistors and 272 mm². Compared to NVIDIA and AMD, Intel’s chip is similar in size to the Navi 48 and GB203 GPUs. However, because it uses a less dense process node, it has fewer transistors per square millimeter.
Intel BMG-G31 vs. NVIDIA and AMD
- Intel BMG-G31: 27.7B transistors, 368 mm ² (TSMC N5) ⬅️
- NVIDIA GB203 : 45.6B transistors, 378 mm ² (TSMC N4P)
- AMD Navi 48 : 53.9B transistors, 357 mm ² (TSMC N4P)
Source: PCGH
Intel Arc Pro B70 features 32 Xe2-HPG cores, 256 XMX engines, 32 RT units, 32 GB of memory, 608 GB/s bandwidth, a 256-bit interface, and native PCIe 5.0 x16. The company will also sell a cut-down variant with Xe2 cores spec matching that of Arc Pro B60, however with 256-bit memory bus. Keep in mind, Intel incorrectly labeled B65 as 192-bit in press materials.
The Pro B70 is around 45% faster than the B60 in games. That still would not make it competitive with the NVIDIA and AMD GPUs mentioned above, but a lot will depend on pricing. Fortunately or not, Intel is not planning a gaming variant right now, so we can only speculate what the gaming market would look like if such cards were available.
| Intel Desktop Battlemage GPUs | ||
|---|---|---|
| 3DCenter | Intel BMG-G21 | Intel BMG-G31 |
| GPU | 19.6 billion transistors on 272mm² in TSMC’s 5nm | 27.7 billion transistors on 368mm² in TSMC’s 5nm |
| Hardware | 20 Xe2 cores (2560 FP32), 80 ROPs, 18 MB L2, 192-bit GDDR6 interface | 32 Xe2 cores (4096 FP32), 128 ROPs, 24 MB L2, 256-bit GDDR6 interface |
| PCI Express | PCIe 5.0 x8 (Gaming solutions only with PCIe 4.0) | PCIe 5.0 x16 |
| Solutions | Arc B570, Arc B580, Arc Pro B60 | Arc Pro B65, Arc Pro B70 |
Source: PC Games Hardware via 3DCenter
