Intel Arc B390 vs NVIDIA GeForce RTX 4080 Mobile Comparison
Intel Arc B390
GeForce RTX 4080 Mobile
PERFORMANCE BENCHMARKS
Analysis: Intel Arc B390 vs NVIDIA GeForce RTX 4080 Mobile
FAQ
Q: How does the Intel Arc B390 compare to the NVIDIA GeForce RTX 4080 Mobile in overall benchmark position?
A: The Intel Arc B390 sits in the 9th percentile of all GPUs in the database, while the RTX 4080 Mobile sits in the 81st percentile. The B390's average benchmark score is 1482, whereas the RTX 4080 Mobile's average is 38135.
Q: What is the closest rival to the Intel Arc B390 according to recorded data?
A: The nearest rival to the Arc B390 is the NVIDIA GeForce GT 520MX, which has an average score of 1463. The Arc B390 leads that card by 1.3%.
Q: Which GPU has the higher boost clock?
A: The Intel Arc B390 has a boost clock of 2500 MHz, which is higher than the RTX 4080 Mobile's boost clock of 1665 MHz. However, the RTX 4080 Mobile has a much higher base clock of 1290 MHz compared to the B390's 300 MHz.
Q: How much memory does each GPU have?
A: The Intel Arc B390 uses system shared memory, with its size, type, and bus width all listed as system dependent. The RTX 4080 Mobile has 12 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s of bandwidth.
Q: What are the manufacturing process nodes for each chip?
A: The Intel Arc B390 is built on Intel's 3 nm process, while the RTX 4080 Mobile uses TSMC's 5 nm process. The RTX 4080 Mobile has 35,800 million transistors on a 294 mm² die.
Q: Which GPU has more shading units?
A: The RTX 4080 Mobile has 7424 shading units, compared to 1536 on the Arc B390. The RTX 4080 Mobile also has 232 texture mapping units and 80 ROPs, versus 48 TMUs and 24 ROPs on the Arc B390.
Architecture Differences
The Intel Arc B390 is built on the Xe3-LPG architecture and uses the Panther Lake chip, while the NVIDIA GeForce RTX 4080 Mobile uses the Ada Lovelace architecture with the AD104 chip. The process nodes differ significantly: Intel fabricates the B390 on a 3 nm node at its own foundry, whereas NVIDIA uses TSMC's 5 nm process for the RTX 4080 Mobile.
The RTX 4080 Mobile's physical details are recorded in full: 35,800 million transistors on a 294 mm² die, giving a transistor density of 121.8M per mm². The Arc B390's transistor count and die size are not recorded in the database.
Compute resource allocation diverges sharply. The Arc B390 has 1536 shading units, 48 TMUs, 24 ROPs, and 12 ray tracing cores. The RTX 4080 Mobile has 7424 shading units, 232 TMUs, 80 ROPs, and 58 ray tracing cores. Additionally, the RTX 4080 Mobile includes 232 tensor cores, while the Arc B390 has no tensor core count recorded.
Memory architecture separates the two completely. The Arc B390 relies on system shared memory with system dependent bandwidth, meaning its memory performance scales with the host platform. The RTX 4080 Mobile has a dedicated 12 GB GDDR6 pool on a 192-bit interface, delivering 432.0 GB/s. The B390's memory clock is listed as system shared, while the RTX 4080 Mobile runs at 2250 MHz with 18 Gbps effective speed.
Clock behavior also differs. The Arc B390 has a low 300 MHz base clock but boosts to 2500 MHz. The RTX 4080 Mobile starts at 1290 MHz base and boosts to 1665 MHz. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B390 uses an IGP bus interface, while the RTX 4080 Mobile connects via PCIe 4.0 x16.
Head-to-Head Benchmarks
The database contains no direct head-to-head benchmark entries between the Intel Arc B390 and the NVIDIA GeForce RTX 4080 Mobile. Instead, the comparison relies on each card's individual recorded benchmark results and their positions relative to all GPUs.
The Arc B390's sole recorded benchmark is 3DMark Steel Nomad DX12, where it scores 1482. That result places it in the 9th percentile of all GPUs. Its nearest rivals in the database are all older NVIDIA parts: the GT 520MX at 1463 (1.3% behind), the GeForce 800M at 1460 (1.5% behind), the GT 625 OEM at 1446 (2.5% behind), and the GT 710 at 1443 (2.7% behind). The Arc B390 beats each of these by single-digit percentages, indicating its performance class sits just above those legacy entries.
The RTX 4080 Mobile has a much broader benchmark profile. Its Geekbench OpenCL score is 159575, and its Geekbench Vulkan score is 145807. In PassMark tests, it records 157 in DirectX 10, 244 in DirectX 11, 96 in DirectX 12, 286 in DirectX 9, 929 in G2D, 24926 in G3D, and 11191 in GPU compute. Its average benchmark score of 38135 places it in the 81st percentile.
The RTX 4080 Mobile's nearest rivals show a tight cluster. The NVIDIA GeForce MX570 scores 38299, which is 0.4% ahead of the RTX 4080 Mobile. The RTX 5080 Mobile scores 38349, also 0.6% ahead. The RTX 4080 Mobile leads the desktop RTX 4070 by 1.3% (37648) and the Tesla P4 by 1.3% (37628). This indicates the mobile 4080 operates in a performance band nearly identical to those cards.
Comparing the two GPUs directly requires translating their average scores. The RTX 4080 Mobile's average of 38135 is roughly 25.7 times the Arc B390's average of 1482. The percentile gap is equally stark: 81st versus 9th. While the Arc B390 edges out decade-old entry-level NVIDIA parts, the RTX 4080 Mobile competes with current-generation midrange desktop cards and other high-end mobile parts.
Specification Differences
The two GPUs differ across nearly every recorded specification field.
Shading units: 1536 on the Arc B390, 7424 on the RTX 4080 Mobile. TMUs: 48 versus 232. ROPs: 24 versus 80. Ray tracing cores: 12 versus 58. Tensor cores: not recorded for the Arc B390, 232 for the RTX 4080 Mobile.
Clocks: Arc B390 runs at 300 MHz base and 2500 MHz boost. RTX 4080 Mobile runs at 1290 MHz base and 1665 MHz boost.
Memory: Arc B390 uses system shared memory with system dependent bandwidth. RTX 4080 Mobile uses 12 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth and 2250 MHz memory clock (18 Gbps effective).
Pixel rate: Arc B390 delivers 60.00 GPixel/s, RTX 4080 Mobile delivers 133.2 GPixel/s. Texture rate: 120.0 GTexel/s versus 386.3 GTexel/s. FP32 performance: 7.680 TFLOPS versus 24.72 TFLOPS. FP16 performance: 15.36 TFLOPS (2:1) versus 24.72 TFLOPS (1:1).
Power: Arc B390 has a TDP of 80 W, RTX 4080 Mobile has a TDP of 110 W. Both are listed as IGP with no power connectors. Bus interface: IGP for the Arc B390, PCIe 4.0 x16 for the RTX 4080 Mobile.
Process node: 3 nm (Intel foundry) versus 5 nm (TSMC). Transistors: unknown for the Arc B390, 35,800 million for the RTX 4080 Mobile. Die size: unknown for the Arc B390, 294 mm² for the RTX 4080 Mobile.
Release dates: the Arc B390 is dated 2026-01-26, while the RTX 4080 Mobile is dated 2023-01-02. The RTX 4080 Mobile lists its predecessor as GeForce 30 Mobile and successor as GeForce 50 Mobile; the Arc B390 has no predecessor or successor recorded.
Where Each One Wins
The Intel Arc B390 wins in clock speed ceiling and power efficiency per its specifications. Its 2500 MHz boost clock exceeds the RTX 4080 Mobile's 1665 MHz boost by a wide margin. Its 80 W TDP is 30 W lower than the RTX 4080 Mobile's 110 W, and its 3 nm process node is smaller than the 5 nm node used by NVIDIA. The Arc B390 also has a higher FP16 conversion ratio at 2:1 versus the RTX 4080 Mobile's 1:1, though its absolute FP16 throughput of 15.36 TFLOPS remains below the RTX 4080 Mobile's 24.72 TFLOPS.
The NVIDIA GeForce RTX 4080 Mobile wins in every recorded performance metric. It has roughly 4.8 times the shading units, 4.8 times the TMUs, 3.3 times the ROPs, and 4.8 times the ray tracing cores. Its FP32 throughput of 24.72 TFLOPS is 3.2 times the Arc B390's 7.680 TFLOPS. Its pixel rate of 133.2 GPixel/s is 2.2 times higher, and its texture rate of 386.3 GTexel/s is 3.2 times higher.
The RTX 4080 Mobile wins decisively in memory. Its 432.0 GB/s dedicated bandwidth and 12 GB capacity stand against the Arc B390's system shared configuration, which has no fixed bandwidth or capacity in the database. The 81st percentile ranking versus the 9th percentile ranking confirms the RTX 4080 Mobile occupies a completely different performance tier.
The Arc B390's wins are structural rather than performance-based: lower power draw, smaller process node, higher boost clock, and a more recent release date. The RTX 4080 Mobile's wins are in compute, graphics throughput, memory, and benchmark results.
The Verdict
The recorded data separates these two GPUs into distinct classes. The Intel Arc B390, with an average benchmark score of 1482 and a 9th percentile ranking, sits near the bottom of the database's GPU hierarchy. Its nearest rivals are the GT 520MX, GeForce 800M, GT 625 OEM, and GT 710, all legacy NVIDIA parts from a much earlier era. The B390 leads those cards by margins between 1.3% and 2.7%, a narrow band that defines its performance ceiling.
The NVIDIA GeForce RTX 4080 Mobile, with an average benchmark score of 38135 and an 81st percentile ranking, operates in the upper tier of mobile GPUs. Its nearest rivals include the MX570 and RTX 5080 Mobile, both within 0.6% of its score, plus the desktop RTX 4070 and Tesla P4, which it leads by 1.3%. This places the RTX 4080 Mobile in a competitive position against current-generation parts rather than legacy hardware.
The Arc B390 is appropriate for systems where integrated graphics with a 3 nm process and 80 W TDP are the priority. Its 2500 MHz boost clock and 2:1 FP16 ratio are notable in isolation, but its 7.680 TFLOPS FP32 throughput and system dependent memory limit its measurable performance. The 3DMark Steel Nomad score of 1482 defines its position: just above the GT 520MX and just below nothing of consequence in the modern GPU landscape.
The RTX 4080 Mobile is the clear choice for applications requiring dedicated graphics throughput. Its 24.72 TFLOPS FP32, 12 GB GDDR6 with 432.0 GB/s bandwidth, and 58 ray tracing cores support demanding workloads. The Geekbench OpenCL score of 159575 and PassMark G3D score of 24926 confirm its standing. Its 81st percentile rank and tight competition with the RTX 5080 Mobile and desktop RTX 4070 show it remains relevant against newer hardware.
The database records no direct head-to-head benchmarks between these two, but the aggregate data leaves little ambiguity. The Arc B390 targets the low-power integrated segment, and the RTX 4080 Mobile targets high-performance mobile graphics. Any comparison of measured outcomes favors the RTX 4080 Mobile by an order of magnitude in average score. The Arc B390's advantages are confined to process node, power draw, and boost clock, none of which translate into benchmark wins in the recorded data.