AMD Radeon 820M vs AMD Radeon RX 7700 XT Comparison

The Verdict

The AMD Radeon 820M and AMD Radeon RX 7700 XT occupy completely different segments of the GPU market. The Radeon 820M is an integrated graphics processor designed for portable devices, while the RX 7700 XT is a dual-slot discrete card for desktop systems. The benchmark data shows a decisive performance gap: the RX 7700 XT holds a 67th percentile ranking among all GPUs, while the 820M sits at the 50th percentile. For any task involving 3D rendering, compute workloads, or modern gaming, the RX 7700 XT is the clear choice. The 820M serves a specific role: it provides basic graphics capability within a 15 W power envelope for thin-and-light portables where discrete graphics is not an option.

Architecture Differences

The two GPUs use different generations of AMD's RDNA architecture. The Radeon 820M is built on RDNA 3.5 and belongs to the Navi III IGP generation for Strix Point Mobile. It uses a 4 nm process node from TSMC. The RX 7700 XT uses RDNA 3.0, belongs to the Navi III (RX 7000) generation, and is fabricated on a 5 nm process node, also from TSMC.

The chip designs differ substantially. The 820M uses the Krackan Point 2 chip, while the RX 7700 XT uses the Navi 32 chip with the codename Wheat Nas. The RX 7700 XT integrates 28,100 million transistors on a 346 mm² die, with a transistor density of 81.2M per mm². The 820M's transistor count and die size are not recorded in the database.

Compute resources show a wide gap. The RX 7700 XT has 3,456 shading units, 216 texture mapping units, and 96 render output units. The 820M has 128 shading units, 8 TMUs, and 4 ROPs. Ray tracing hardware also differs: the RX 7700 XT has 54 ray tracing cores, while the 820M has 2. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The memory subsystems are fundamentally different. The RX 7700 XT uses 12 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s of bandwidth. The 820M uses system shared memory, with its bandwidth described as system dependent. Clock speeds also differ: the RX 7700 XT has a base clock of 1435 MHz, a game clock of 2171 MHz, and a boost clock of 2544 MHz, while the 820M has a base clock of 400 MHz and a boost clock of 2800 MHz.

Power requirements separate the two entirely. The RX 7700 XT has a TDP of 245 W, requires two 8-pin power connectors, and needs a 550 W suggested power supply. The 820M has a TDP of 15 W and uses no power connectors. The RX 7700 XT is a dual-slot card measuring 267 mm in length, 135 mm in height, and 50 mm in width. The 820M is an IGP with no slot width, as it is integrated into the processor package.

Head-to-Head Benchmarks

The database contains benchmark results for the RX 7700 XT across multiple test suites, while the 820M has no recorded benchmark scores. This absence of data for the 820M, combined with its 50th percentile ranking and zero average benchmark score, indicates that the integrated GPU has not been subjected to the same level of standardized testing.

The RX 7700 XT's performance profile shows strength across DirectX versions. In PassMark DirectX testing, it scores 294 in DirectX 9, 232 in DirectX 11, 119 in DirectX 10, and 79 in DirectX 12. The PassMark G3D score reaches 22,547, while the GPU compute score is 12,912. In 3DMark Steel Nomad DX12, the RX 7700 XT records 3,316 points. Geekbench results show 138,383 in OpenCL and 46,443 in Vulkan.

Relative to its nearest rivals, the RX 7700 XT performs competitively. It sits 0.5% above the NVIDIA GeForce RTX 5060 Mobile, which averages 22,435. It is 0.8% below the RTX 4060 Mobile, which averages 22,729. Against the RTX 2080, the RX 7700 XT trails by 1.5%, with that card averaging 22,895. It leads the AMD Radeon RX 5700 by 1.7%, which averages 22,170. These small percentage differences place the RX 7700 XT in a tightly contested performance band among mid-range and previous-generation high-end cards.

The Radeon 820M, with no benchmark entries, cannot be compared numerically against the RX 7700 XT. The database records zero wins for the 820M and zero wins for the RX 7700 XT in head-to-head tests. The practical interpretation is that the RX 7700 XT's massive advantage in shading units, texture units, ROPs, memory bandwidth, and dedicated VRAM makes it the only viable option for demanding workloads.

Specification Differences

The two GPUs differ across nearly every specification category. The process node is 4 nm for the 820M versus 5 nm for the RX 7700 XT. The 820M is listed as an IGP with no slot width, while the RX 7700 XT is dual-slot. Power connectors are none for the 820M versus two 8-pin connectors for the RX 7700 XT. The suggested power supply is not recorded for the 820M, while the RX 7700 XT requires a 550 W unit.

Memory specifications show the largest structural difference. The 820M uses system shared memory with system-dependent bandwidth. The RX 7700 XT has 12 GB of GDDR6 on a 192-bit interface with 432.0 GB/s bandwidth. The 820M's memory clock is listed as system shared, while the RX 7700 XT runs at 2250 MHz with 18 Gbps effective speed.

Compute throughput differs by orders of magnitude. The RX 7700 XT delivers 35.17 TFLOPS of FP32 and FP16 performance, while the 820M delivers 716.8 GFLOPS in both. Pixel rate is 244.2 GPixel/s for the RX 7700 XT versus 11.20 GPixel/s for the 820M. Texture rate is 549.5 GTexel/s versus 22.40 GTexel/s.

The bus interface differs as well: the 820M uses PCIe 4.0 x8, while the RX 7700 XT uses PCIe 4.0 x16. Display outputs are portable-device dependent for the 820M, while the RX 7700 XT offers 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C.

Release dates place the products in different generations. The 820M launched on February 28, 2025, while the RX 7700 XT launched on September 5, 2023. The RX 7700 XT has a recorded launch MSRP of 449 USD. The 820M's predecessor is the Navi II IGP, while the RX 7700 XT's predecessor is Navi II and its successor is Navi IV.

FAQ

Q: Which GPU has more shading units?

A: The AMD Radeon RX 7700 XT has 3,456 shading units, while the AMD Radeon 820M has 128 shading units.

Q: What is the memory configuration of each GPU?

A: The RX 7700 XT uses 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth. The 820M uses system shared memory with system-dependent bandwidth.

Q: How do the power requirements compare?

A: The RX 7700 XT has a TDP of 245 W, requires two 8-pin power connectors, and has a suggested power supply of 550 W. The 820M has a TDP of 15 W and uses no power connectors.

Q: What directX versions do both GPUs support?

A: Both GPUs support DirectX 12 Ultimate (12_2), along with OpenGL 4.6 and Vulkan 1.4.

Q: How does the RX 7700 XT compare to its nearest rivals?

A: The RX 7700 XT averages 22,549 in benchmark scores. It is 0.5% ahead of the RTX 5060 Mobile, 0.8% behind the RTX 4060 Mobile, 1.5% behind the RTX 2080, and 1.7% ahead of the RX 5700.

Q: What process nodes do the two GPUs use?

A: The 820M uses a 4 nm process node, while the RX 7700 XT uses a 5 nm process node. Both are fabricated by TSMC.

Where Each One Wins

The RX 7700 XT wins in every scenario that demands sustained graphics performance. Its 3,456 shading units, 216 TMUs, and 96 ROPs provide the computational foundation for high-resolution gaming, 3D rendering, and GPU-accelerated compute. The 12 GB GDDR6 memory with 432.0 GB/s bandwidth allows large textures and datasets to reside on the card, avoiding the performance penalties of system memory sharing. Its 35.17 TFLOPS FP32 throughput places it in a performance class suitable for demanding desktop workloads. The dual-slot form factor, two 8-pin power connectors, and 550 W suggested power supply confirm that this is a card designed for full-power desktop operation.

The 820M wins in scenarios where power consumption and physical footprint are the limiting factors. Its 15 W TDP is a fraction of the RX 7700 XT's 245 W requirement. As an IGP, it requires no slot space, no power connectors, and no separate card installation. The 4 nm process node allows this integration within a mobile processor package. Its 128 shading units and 2 ray tracing cores provide basic graphics capability for portable devices, enough for everyday desktop use, video playback, and light 2D workloads. The 400 MHz base clock and 2800 MHz boost clock show that it can scale up when needed, but its 716.8 GFLOPS FP32 ceiling limits it to modest graphical tasks.

The benchmark data confirms this split. The RX 7700 XT has recorded scores across 3DMark, Geekbench, and PassMark suites, with its average benchmark score of 22,549 placing it at the 67th percentile. The 820M has no recorded benchmark scores and sits at the 50th percentile with an average score of zero. For desktop users who need to run modern games or GPU compute applications, the RX 7700 XT is the only choice between these two. For ultra-portable laptops where battery life and thermal limits are paramount, the 820M provides integrated graphics without the power draw of a discrete solution. The two products do not compete in the same market segment, and the data shows no overlap in their intended use cases.