AMD Radeon 820M vs Intel Arc Pro B65 Comparison

Where Each One Wins

The AMD Radeon 820M and Intel Arc Pro B65 occupy completely different performance strata, and the recorded data makes that split unambiguous. The Radeon 820M is an integrated graphics processor (IGP) designed for low-power mobile systems, while the Arc Pro B65 is a dual-slot discrete workstation card with dedicated memory and a 200 W power envelope. There are no overlapping benchmark wins because the two parts are not competing for the same workload class.

The Radeon 820M delivers 716.8 GFLOPS of FP32 compute and 716.8 GFLOPS of FP16 compute at a 1:1 ratio, with a texture rate of 22.40 GTexel/s and a pixel rate of 11.20 GPixel/s. Those figures place it firmly in the entry-level integrated segment, suitable for basic desktop composition, video playback, and light 2D or compute tasks where system shared memory is acceptable. Its 15 W TDP and PCIe 4.0 x8 interface reflect a design optimized for power efficiency inside compact laptops, not peak throughput.

The Intel Arc Pro B65, by contrast, delivers 12.29 TFLOPS of FP32 and 24.58 TFLOPS of FP16 at a 2:1 ratio, which is roughly 17 times the FP32 throughput of the AMD part. Its texture rate of 384.0 GTexel/s and pixel rate of 192.0 GPixel/s are similarly dominant. The B65 also carries 32 GB of GDDR6 memory on a 256-bit bus with 608.0 GB/s of bandwidth, whereas the Radeon 820M uses system shared memory with bandwidth listed as system dependent. For any workload that scales with raw shader count, memory bandwidth, or dedicated VRAM capacity, the Intel card wins outright.

The data shows no head-to-head benchmark entries, zero wins for either side, and both parts sit at the 50th percentile against all GPUs in the database. That percentile equality does not indicate performance parity; it reflects the absence of a common benchmark suite that would rank them on a single scale. The Radeon 820M wins in the mobile integrated space by existing within a 15 W power budget, while the Arc Pro B65 wins in professional rendering, AI inference, and high-resolution output by virtue of its 2560 shading units, 20 ray tracing cores, and 4x DisplayPort 2.1 outputs.

Architecture Differences

The architectural gap between these two GPUs is substantial. The Radeon 820M uses the RDNA 3.5 architecture on a 4 nm TSMC process, part of the Krackan Point 2 chip in the Navi III IGP (Strix Point Mobile) generation. It has 128 shading units, 8 texture mapping units, 4 raster output pipelines, and 2 ray tracing cores. The base clock is 400 MHz with a boost clock of 2800 MHz. The chip is fabricated by TSMC, though transistor count and die size are not recorded. The memory subsystem is entirely system shared, with no dedicated VRAM, and the bus interface is PCIe 4.0 x8.

The Intel Arc Pro B65 uses the Xe2-HPG architecture on a 5 nm TSMC process, built from the BMG-G21 chip in the Battlemage (Pro Series) generation. It has 2560 shading units, 160 TMUs, 80 ROPs, and 20 ray tracing cores. The base and boost clocks are both 2400 MHz, so there is no clock variance under load. The chip contains 19,600 million transistors on a 272 mm² die, giving a transistor density of 72.1 million transistors per square millimeter. Memory is 32 GB of GDDR6 running at 2375 MHz with 19 Gbps effective data rate, across a 256-bit bus for 608.0 GB/s of bandwidth. The bus interface is PCIe 5.0 x16, and the card uses a dual-slot cooler with a single 8-pin power connector, requiring a 550 W power supply.

The process node comparison is notable: the Radeon 820M uses a denser 4 nm process versus Intel's 5 nm, but the Intel chip compensates with a far larger die and 20 times the shading units. The AMD part has no tensor cores listed, while the Intel part also lists none, but the Intel card has 20 dedicated ray tracing cores versus the AMD's 2. The memory architecture difference is the most consequential: the Radeon 820M relies on system memory with bandwidth that varies by host system, while the Intel card has fixed 608.0 GB/s bandwidth. That fixed bandwidth is what enables sustained professional workloads. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical.

The Radeon 820M's display outputs are listed as portable device dependent, meaning they vary by laptop design. The Intel Arc Pro B65 offers 4x DisplayPort 2.1, which is a professional workstation feature for multi-monitor setups. Power delivery also diverges sharply: the AMD IGP draws no external power connectors and fits within a 15 W TDP, while the Intel card requires a dedicated 8-pin connector and a 200 W TDP. The Intel card is dual-slot; the AMD part is an IGP with no slot width.

The Verdict

The recorded data supports a straightforward verdict. The AMD Radeon 820M is an integrated solution for thin-and-light mobile devices where power consumption is the primary constraint. Its 15 W TDP, system shared memory, and PCIe 4.0 x8 interface make it appropriate for laptops that need basic graphics acceleration without discrete cooling. The 128 shading units and 2 ray tracing cores provide modest capability for everyday use, but the FP32 throughput of 716.8 GFLOPS and system-dependent bandwidth limit it to light workloads.

The Intel Arc Pro B65 is a professional discrete GPU for workstation-class tasks. Its 2560 shading units, 20 ray tracing cores, 32 GB of GDDR6, and 608.0 GB/s of bandwidth place it in a different performance class entirely. The 12.29 TFLOPS FP32 and 24.58 TFLOPS FP16 figures indicate it can handle compute-heavy rendering, video encoding, and AI inference workloads that the Radeon 820M cannot approach. The 4x DisplayPort 2.1 outputs and dual-slot form factor confirm its intended use in desktop workstations with multiple high-resolution monitors.

There is no scenario in the data where these two products compete for the same buyer. The Radeon 820M wins in portability and power efficiency; the Arc Pro B65 wins in every raw performance metric. The percentile ranking of 50 for both GPUs against all GPUs is an artifact of the database lacking a common benchmark, not evidence of comparable performance. Any user requiring dedicated VRAM, high memory bandwidth, or professional display outputs should select the Intel card. Any user prioritizing minimal power draw and integrated simplicity should use the AMD part.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The Intel Arc Pro B65 delivers 12.29 TFLOPS of FP32, compared to the AMD Radeon 820M's 716.8 GFLOPS, a difference of roughly 17 times.

Q: How much dedicated memory does each GPU have?

A: The Intel Arc Pro B65 has 32 GB of GDDR6 on a 256-bit bus, while the AMD Radeon 820M uses system shared memory with no dedicated VRAM and system-dependent bandwidth.

Q: What are the power requirements for each GPU?

A: The AMD Radeon 820M has a 15 W TDP and requires no power connectors, while the Intel Arc Pro B65 has a 200 W TDP, uses a single 8-pin power connector, and requires a 550 W power supply.

Q: Which GPU supports ray tracing, and how many cores does each have?

A: Both support DirectX 12 Ultimate (12_2), which includes ray tracing. The AMD Radeon 820M has 2 ray tracing cores, while the Intel Arc Pro B65 has 20 ray tracing cores.

Q: What display outputs are available on each GPU?

A: The Intel Arc Pro B65 offers 4x DisplayPort 2.1 outputs. The AMD Radeon 820M's display outputs are listed as portable device dependent, meaning they vary by laptop design.

Q: What are the manufacturing process nodes for these GPUs?

A: The AMD Radeon 820M uses a 4 nm TSMC process, while the Intel Arc Pro B65 uses a 5 nm TSMC process. Both are fabricated by TSMC.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for these two GPUs, and each has zero recorded wins. The absence of direct comparison data reflects the fact that the Radeon 820M is an IGP while the Arc Pro B65 is a discrete workstation card; they are rarely tested in the same system or against the same workload suite. However, the recorded specifications allow for a quantitative comparison across key metrics.

The largest win for the Intel Arc Pro B65 comes in FP32 compute. At 12.29 TFLOPS versus 716.8 GFLOPS, the Intel card is approximately 17.1 times faster in single-precision floating-point work. In FP16, the Intel card delivers 24.58 TFLOPS at a 2:1 ratio, while the AMD part delivers 716.8 GFLOPS at a 1:1 ratio, making the Intel card roughly 34 times faster in half-precision compute. That gap matters for AI inference and machine learning workloads that rely on FP16 accumulation.

Memory bandwidth shows a similarly decisive gap. The Intel Arc Pro B65 has 608.0 GB/s of dedicated GDDR6 bandwidth, while the AMD Radeon 820M's bandwidth is listed as system dependent, meaning it varies with the host laptop's memory configuration. In a best-case scenario with fast LPDDR5 memory, the AMD part would still not approach 608.0 GB/s due to its system shared architecture. The 256-bit bus width versus system shared further reinforces the Intel advantage.

Texture and pixel rates also favor the Intel card. The Arc Pro B65 achieves 384.0 GTexel/s and 192.0 GPixel/s, compared to the Radeon 820M's 22.40 GTexel/s and 11.20 GPixel/s. That is a 17.1 times difference in both metrics, consistent with the shader count ratio. The Intel card has 160 TMUs and 80 ROPs versus 8 TMUs and 4 ROPs for the AMD part.

Ray tracing resources favor the Intel card by a factor of 10: 20 RT cores versus 2. Clock speeds tell a different story, as the AMD part boosts to 2800 MHz versus the Intel card's fixed 2400 MHz, but the AMD advantage in clock speed does not compensate for the 20 times difference in shading units. The Intel chip also has a transistor count of 19,600 million on a 272 mm² die, while the AMD transistor count is unknown, but the 4 nm process suggests a smaller die.

The interface bandwidth also diverges: the Intel Arc Pro B65 uses PCIe 5.0 x16, while the AMD Radeon 820M uses PCIe 4.0 x8. That difference affects data transfer rates between the GPU and host system, particularly for workloads that stream large datasets. The Intel card's dual-slot design and 200 W TDP versus the AMD IGP's 15 W TDP and no slot width further confirm that these are not comparable products.

In summary, every measurable performance metric in the database favors the Intel Arc Pro B65 by an order of magnitude or more, with the sole exception of clock speed and process node density, where the AMD Radeon 820M holds a smaller advantage that does not translate into competitive throughput.