AMD Radeon PRO W7900 vs Intel Arc B390 Comparison

Head-to-Head Benchmarks

The recorded data places these two products in entirely different performance tiers. The AMD Radeon PRO W7900 carries an average benchmark score of 110,725, while the Intel Arc B390 records an average score of 1,482. That is a difference of approximately 109,243 points, or roughly 74 times higher for the AMD part. The gap is not marginal; it is categorical.

Looking at individual tests, the AMD Radeon PRO W7900 achieves 84,379 in Geekbench OpenCL and 137,070 in Geekbench Vulkan. The Intel Arc B390 has only one recorded benchmark, 3DMark Steel Nomad DX12, with a score of 1,482. There are no overlapping tests in the database, so direct head-to-head comparisons on identical workloads are unavailable. Instead, the percentile standings provide the clearest signal: the AMD card sits at the 94th percentile of all GPUs, while the Intel part sits at the 9th percentile. The AMD product outperforms roughly 94% of the database entries, while the Intel product outperforms only about 9%.

The nearest rivals in the database reinforce this split. The AMD Radeon PRO W7900 sits within 1% of the AMD Radeon Pro Vega II (109,617 average) and 3.2% ahead of the AMD Radeon Pro W6600X (107,342 average). It trails the NVIDIA RTX A5500 Mobile by 2.8% (113,944 average) and the NVIDIA Tesla V100 SXM2 16 GB by 3.2% (114,395 average). These are professional workstation and datacenter parts, and the W7900 holds its ground against all of them within a narrow band of roughly 3% either way.

The Intel Arc B390, by contrast, sits within 1.3% of the NVIDIA GeForce GT 520MX (1,463 average), 1.5% of the NVIDIA GeForce 800M (1,460 average), 2.5% of the NVIDIA GeForce GT 625 OEM (1,446 average), and 2.7% of the NVIDIA GeForce GT 710 (1,443 average). These are legacy entry-level desktop parts from over a decade ago. The B390's score of 1,482 places it in that company, not in the company of modern workstation accelerators.

The FP32 compute figures tell a similar story. The AMD Radeon PRO W7900 delivers 61.32 TFLOPS of FP32 throughput, while the Intel Arc B390 delivers 7.680 TFLOPS. That is a factor of roughly 8 in raw shader compute. The texture rate on the AMD card is 958.1 GTexel/s versus 120.0 GTexel/s on the Intel part, a factor of about 8 again. Pixel rate shows an even larger gap: 479.0 GPixel/s versus 60.00 GPixel/s, a factor of roughly 8 as well. These ratios are consistent across the board, indicating the architectural throughput advantage scales uniformly.

The Verdict

The database points to distinct audiences. The AMD Radeon PRO W7900 is designed for workloads where large memory capacity and high sustained compute throughput matter. Its 48 GB of GDDR6 on a 384-bit bus delivers 864.0 GB/s of bandwidth, a figure that dwarfs the Intel Arc B390's system-shared memory with bandwidth described only as "System Dependent." For rendering, simulation, AI inference, or any task that saturates memory bandwidth, the AMD part is the only viable choice between these two.

The Intel Arc B390, on the other hand, is an integrated graphics processor (IGP) with a 80 W TDP and no power connectors. It uses system-shared memory, meaning its performance scales with the host platform's memory configuration. Its 1,536 shading units, 48 TMUs, and 24 ROPs are a fraction of the AMD card's 6,144 shading units, 384 TMUs, and 192 ROPs. The B390's 12 ray tracing cores compare to 96 on the AMD side.

Anyone requiring professional GPU compute should select the AMD Radeon PRO W7900 without hesitation based on this data. The 94th percentile standing, the 48 GB memory pool, and the 61.32 TFLOPS FP32 rate position it squarely in workstation territory. The Intel Arc B390, at the 9th percentile, is suitable only for basic display output, light 2D workloads, or as an integrated fallback in a portable device. Its 3nm process node and 2,500 MHz boost clock are modern, but the resource counts and memory architecture cap its performance firmly in entry-level territory.

Architecture Differences

The two products diverge at almost every architectural level. The AMD Radeon PRO W7900 uses the Navi 31 chip built on RDNA 3.0 architecture, codenamed Plum Bonito. It is manufactured on a 5 nm process at TSMC with 57,700 million transistors on a 529 mm² die, yielding a transistor density of 109.1 million transistors per square millimeter. The Intel Arc B390 uses the Panther Lake chip built on Xe3-LPG architecture, manufactured on a 3 nm process at Intel. Its transistor count and die size are not recorded in the database, and no density figure is available.

The memory subsystems are fundamentally different. The AMD card uses 48 GB of dedicated GDDR6 with a 384-bit bus and fixed bandwidth of 864.0 GB/s. The Intel part uses system-shared memory, meaning the GPU has no dedicated VRAM and instead borrows from the host system's RAM. The bus width is likewise system-shared, and bandwidth is dependent on the platform.

Clock behavior differs as well. The AMD card has a base clock of 1,760 MHz and a boost clock of 2,495 MHz, with memory clocked at 2,250 MHz (18 Gbps effective). The Intel part has a base clock of just 300 MHz but a boost clock of 2,500 MHz, slightly higher than the AMD boost. The low base clock suggests aggressive power management for integrated use.

The FP16 compute ratio also differs. The AMD card delivers FP16 at 61.32 TFLOPS in a 1:1 ratio with FP32, meaning no dedicated half-rate path. The Intel part delivers 15.36 TFLOPS FP16 in a 2:1 ratio, meaning it processes two FP16 operations per FP32 operation. This makes the Intel architecture relatively stronger at FP16 workloads, though the absolute numbers remain far below the AMD card.

Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD card uses a PCIe 4.0 x16 interface, while the Intel part is an IGP with no discrete bus interface. The AMD card is a triple-slot design measuring 280 mm long, 110 mm tall, and 51 mm wide, requiring 2x 8-pin power connectors and a 600 W suggested PSU. The Intel part has no slot width, no dimensions recorded, and no power connectors.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon PRO W7900 has an average benchmark score of 110,725, while the Intel Arc B390 has 1,482. The AMD part sits at the 94th percentile of all GPUs, versus the 9th percentile for Intel.

Q: How much memory does each GPU have?

A: The AMD Radeon PRO W7900 has 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth. The Intel Arc B390 uses system-shared memory, with size, type, and bus width all listed as "System Shared" and bandwidth described as "System Dependent."

Q: What are the FP32 compute capabilities?

A: The AMD Radeon PRO W7900 delivers 61.32 TFLOPS of FP32, while the Intel Arc B390 delivers 7.680 TFLOPS. The AMD card also achieves 958.1 GTexel/s texture rate and 479.0 GPixel/s pixel rate, versus 120.0 GTexel/s and 60.00 GPixel/s for Intel.

Q: When were these products released?

A: The AMD Radeon PRO W7900 was released on May 25, 2023. The Intel Arc B390 has a release date of January 26, 2026.

Q: What is the power draw of each?

A: The AMD Radeon PRO W7900 has a TDP of 295 W and requires 2x 8-pin power connectors with a 600 W suggested PSU. The Intel Arc B390 has a TDP of 80 W and uses no power connectors.

Q: Which GPU has more shading units and ray tracing cores?

A: The AMD Radeon PRO W7900 has 6,144 shading units and 96 ray tracing cores. The Intel Arc B390 has 1,536 shading units and 12 ray tracing cores.

Where Each One Wins

The AMD Radeon PRO W7900 wins decisively in every recorded metric. Its 48 GB dedicated memory pool with 864.0 GB/s bandwidth is suited for large datasets, high-resolution textures, and multi-stream rendering. The 61.32 TFLOPS FP32 rate supports compute-heavy simulation and scientific workloads. The 94th percentile standing places it among the top 6% of all GPUs in the database, and its nearest rivals are all professional or datacenter parts. The 2,495 MHz boost clock and 1,760 MHz base clock indicate sustained high-frequency operation under load, enabled by the 295 W TDP and triple-slot cooling.

The Intel Arc B390's advantages are limited to form factor and power efficiency. As an IGP, it requires no expansion slot, no power connectors, and no discrete PSU recommendation. Its 80 W TDP is less than a third of the AMD card's 295 W. The 300 MHz base clock suggests very low idle and light-load power draw. The 3nm Intel process node is more advanced than the 5nm TSMC node used by AMD, which may contribute to the power efficiency. The boost clock of 2,500 MHz is marginally higher than AMD's 2,495 MHz.

For portable devices where space and power are constrained, the Intel part is the only option that physically fits. The database lists its display outputs as "Portable Device Dependent," confirming its intended integration into laptops or compact systems. The AMD card's triple-slot footprint and 280 mm length preclude such use entirely.

In terms of raw performance, the Intel Arc B390's nearest rivals are all over a decade old: the NVIDIA GeForce GT 520MX, GeForce 800M, GT 625 OEM, and GT 710, all within 2.7% of its score. This places the B390 in a legacy entry-level bracket, adequate for basic display, video playback, or very light graphics work, but not for any professional compute task.

Specification Differences

The two GPUs differ in nearly every recorded specification. The AMD Radeon PRO W7900 uses the Navi 31 chip on RDNA 3.0 architecture, while the Intel Arc B390 uses Panther Lake on Xe3-LPG. The AMD process node is 5 nm at TSMC with 57,700 million transistors on a 529 mm² die. The Intel process node is 3 nm at Intel, with transistor count and die size unknown.

Clock speeds differ: AMD base 1,760 MHz, boost 2,495 MHz, memory 2,250 MHz (18 Gbps effective); Intel base 300 MHz, boost 2,500 MHz, memory system-shared. Memory configuration: AMD has 48 GB GDDR6 on 384-bit with 864.0 GB/s; Intel has system-shared memory with system-dependent bandwidth.

Compute resources: AMD has 6,144 shading units, 384 TMUs, 192 ROPs, and 96 RT cores; Intel has 1,536 shading units, 48 TMUs, 24 ROPs, and 12 RT cores. Pixel and texture rates: AMD 479.0 GPixel/s and 958.1 GTexel/s; Intel 60.00 GPixel/s and 120.0 GTexel/s. FP32: AMD 61.32 TFLOPS, Intel 7.680 TFLOPS. FP16: AMD 61.32 TFLOPS (1:1), Intel 15.36 TFLOPS (2:1).

Power and physical: AMD TDP 295 W, triple-slot, 2x 8-pin connectors, 600 W suggested PSU, PCIe 4.0 x16, dimensions 280x110x51 mm; Intel TDP 80 W, IGP slot width, no power connectors, no PSU suggestion, IGP bus interface, no dimensions recorded. Display outputs: AMD has 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1; Intel lists "Portable Device Dependent."

Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD card has a launch MSRP of 3,999 USD, while the Intel part has no recorded launch MSRP. The AMD card's predecessor is the Radeon Pro Vega, while the Intel part has no predecessor listed. Both are marked as Active in production status. The AMD card was released May 25, 2023; the Intel card is dated January 26, 2026. The AMD card's average benchmark score is 110,725 at the 94th percentile, versus 1,482 at the 9th percentile for Intel.