AMD Radeon 840M vs Intel Arc Pro B70 Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark entries for the AMD Radeon 840M versus the Intel Arc Pro B70. Both products hold identical percentile placements (50th percentile versus all GPUs) and show an average benchmark score of zero in the available dataset. This means there are no frame rate comparisons, synthetic test scores, or compute workloads logged that would let us declare a definitive winner in raw performance.

What the data does allow is a structural comparison of their theoretical output limits. The Intel Arc Pro B70 lists a pixel rate of 358.4 GPixel/s, which is roughly 15.4 times higher than the Radeon 840M's 23.20 GPixel/s. Texture rate tells a similar story: the Arc Pro B70 posts 716.8 GTexel/s against 46.40 GTexel/s for the AMD part, a factor of about 15.4 as well. FP32 compute shows 22.94 TFLOPS for Intel versus 1,484.8 GFLOPS (1.4848 TFLOPS) for AMD, meaning the Arc Pro B70 delivers roughly 15.5 times the single-precision floating point throughput. These are raw silicon limits, not measured application results, but they indicate the performance gap is enormous on paper.

The Radeon 840M is an integrated graphics processor (IGP) with a 15 W TDP, while the Arc Pro B70 is a dual-slot discrete card with a 230 W TDP. The power envelope difference of 215 watts explains much of the theoretical performance disparity. The Arc Pro B70 also has 32 GB of dedicated GDDR6 memory on a 256-bit bus with 608.0 GB/s of bandwidth, whereas the 840M uses system shared memory with bandwidth listed as "System Dependent." In memory-bound workloads, the Intel card's dedicated bandwidth advantage is substantial.

Architecture Differences

The two GPUs come from different architectural generations and design philosophies. The AMD Radeon 840M is built on RDNA 3.5, part of the Navi III IGP generation for Strix Point Mobile, using a 4 nm process at TSMC. The Intel Arc Pro B70 uses Xe2-HPG, from the Battlemage (Pro Series) generation, on a 5 nm process also at TSMC. The process node difference favors AMD in terms of transistor density potential, though the die size for the 840M is unknown while the Arc Pro B70 measures 368 mm².

Shader resources diverge sharply. The 840M has 256 shading units, 16 texture mapping units (TMUs), 8 render output units (ROPs), and 4 ray tracing cores. The Arc Pro B70 packs 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. That is a 16:1 ratio in shading units and TMUs, also a 16:1 ratio in ROPs and an 8:1 ratio in ray tracing cores. For ray tracing workloads specifically, the Intel card has eight times the dedicated hardware.

Clock behavior differs. The 840M runs a 400 MHz base clock and boosts to 2900 MHz. The Arc Pro B70 has a much higher base clock at 2280 MHz and boosts to 2800 MHz. Despite the lower boost ceiling, the Intel card's massive shader count overwhelms the clock disadvantage. Memory clocks are not comparable since the 840M uses system shared memory while the Arc Pro B70 uses 2375 MHz (19 Gbps effective) GDDR6.

FP16 throughput reveals another architectural split. The 840M delivers 1,484.8 GFLOPS for both FP32 and FP16 at a 1:1 ratio, meaning no dedicated half-precision acceleration. The Arc Pro B70 reaches 45.88 TFLOPS for FP16 at a 2:1 ratio, doubling its FP32 rate. For AI inference or workloads using half precision, Intel's card has a clear structural advantage.

Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API feature parity is present. The bus interface differs: the 840M uses PCIe 4.0 x8 while the Arc Pro B70 uses PCIe 5.0 x16. The Intel card also has dedicated display outputs (1x HDMI 2.1a, 3x DisplayPort 2.1), while the AMD IGP's outputs are listed as "Portable Device Dependent." The 840M requires no power connectors and fits as an IGP; the Arc Pro B70 needs a single 8-pin connector and a 550 W suggested PSU.

The Verdict

The data indicates these are not competitors in any practical sense. The Intel Arc Pro B70 is a professional discrete GPU with 32 GB of GDDR6 memory, a 256-bit bus, and 608.0 GB/s of bandwidth. The AMD Radeon 840M is a low-power integrated solution with system shared memory and a 15 W TDP. The theoretical compute gap favors Intel by roughly 15.5 times in FP32, 15.4 times in pixel rate, and 15.4 times in texture rate.

The Radeon 840M's only advantages are its 4 nm process node, higher boost clock (2900 MHz versus 2800 MHz), and significantly lower power draw. It also has a 1:1 FP16 ratio, meaning it does not slow down for half-precision work, but the absolute FP16 throughput is still far below the Arc Pro B70's 45.88 TFLOPS.

The Arc Pro B70 is the choice for anyone needing dedicated VRAM, high bandwidth, or professional compute throughput. The 840M suits low-power mobile devices where integrated graphics are the only option. The launch MSRP for the Arc Pro B70 is 949 USD, though pricing comparisons are outside the scope of this analysis.

FAQ

Q: Which GPU has more shading units?

A: The Intel Arc Pro B70 has 4096 shading units, while the AMD Radeon 840M has 256. That is a 16:1 ratio in favor of Intel.

Q: How much memory bandwidth does each GPU have?

A: The Intel Arc Pro B70 has 608.0 GB/s from 32 GB of GDDR6 on a 256-bit bus. The AMD Radeon 840M uses system shared memory, and its bandwidth is listed as "System Dependent."

Q: What is the power consumption difference?

A: The AMD Radeon 840M has a 15 W TDP, while the Intel Arc Pro B70 has a 230 W TDP. The Intel card also requires a 550 W suggested PSU and one 8-pin power connector.

Q: Do both GPUs support the same APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: Which GPU has a higher boost clock?

A: The AMD Radeon 840M boosts to 2900 MHz, while the Intel Arc Pro B70 boosts to 2800 MHz. The AMD part is 100 MHz higher, but the Intel card has far more shaders.

Q: What is the ray tracing hardware difference?

A: The Intel Arc Pro B70 has 32 ray tracing cores, while the AMD Radeon 840M has 4. The Intel card has eight times the dedicated ray tracing hardware.

Where Each One Wins

The AMD Radeon 840M wins in power efficiency and integration. Its 15 W TDP makes it suitable for portable devices where discrete GPUs are not feasible. The 4 nm process node is smaller than Intel's 5 nm, and the 400 MHz base clock to 2900 MHz boost range shows it can scale up when needed. The 1:1 FP16 ratio means no penalty for half-precision workloads, though the absolute throughput is low. Its PCIe 4.0 x8 interface is adequate for an IGP, and the lack of power connectors simplifies system integration.

The Intel Arc Pro B70 wins in every category of raw throughput. The 32 GB GDDR6 frame buffer with 608.0 GB/s bandwidth is essential for large datasets or high-resolution textures. The 4096 shading units and 128 ROPs deliver 358.4 GPixel/s fill rate, which is critical for high-resolution rendering. The 45.88 TFLOPS FP16 performance makes it suited for AI inference or scientific workloads. The PCIe 5.0 x16 interface provides double the bus bandwidth of the 840M's PCIe 4.0 x8. The dual-slot cooler and 267 mm length indicate a desktop-oriented card with dedicated display outputs.

For gaming at high settings or professional 3D rendering, the Arc Pro B70's 32 RT cores and 22.94 TFLOPS FP32 compute are decisive. For thin-and-light laptops or embedded systems where power draw is the primary constraint, the Radeon 840M's 15 W envelope is the only viable choice. The recorded data does not include any measured benchmark scores, so these conclusions rest entirely on theoretical specifications.

Specification Differences

The two GPUs differ in nearly every measurable specification. The Radeon 840M uses a 4 nm process, while the Arc Pro B70 uses 5 nm. Die size is unknown for AMD but 368 mm² for Intel. Base clocks are 400 MHz versus 2280 MHz; boost clocks are 2900 MHz versus 2800 MHz. Memory size is system shared for AMD versus 32 GB for Intel. Memory type is system shared versus GDDR6. Bus width is system shared versus 256 bit. Bandwidth is system dependent versus 608.0 GB/s.

Shading units: 256 versus 4096. TMUs: 16 versus 256. ROPs: 8 versus 128. Ray tracing cores: 4 versus 32. Pixel rate: 23.20 GPixel/s versus 358.4 GPixel/s. Texture rate: 46.40 GTexel/s versus 716.8 GTexel/s. FP32: 1,484.8 GFLOPS versus 22.94 TFLOPS. FP16: 1,484.8 GFLOPS (1:1) versus 45.88 TFLOPS (2:1). TDP: 15 W versus 230 W. Slot width: IGP versus dual-slot. Power connectors: none versus 1x 8-pin. Suggested PSU: none versus 550 W. Bus interface: PCIe 4.0 x8 versus PCIe 5.0 x16. Display outputs: portable device dependent versus 1x HDMI 2.1a and 3x DisplayPort 2.1.

Physical dimensions differ as well: the Arc Pro B70 measures 267 mm in length, 110 mm in height, and 39 mm in width, while the 840M has no listed dimensions because it is an integrated part. Release dates are 2025-02-28 for AMD and 2026-03-25 for Intel. The Radeon 840M is marked as Active in production status; the Arc Pro B70's status is not listed. The 840M has a predecessor named Navi II IGP, while the Arc Pro B70 has no predecessor listed. Neither has a listed successor.