AMD Radeon 820M vs AMD Radeon RX 9070 XT Comparison

AMD Radeon 820M and AMD Radeon RX 9070 XT occupy opposite ends of the same GPU family, one an integrated solution for thin-and-light systems and the other a dedicated add-in board for high-end desktops. The recorded data shows no benchmark overlap between the two, as the 820M has no entries in the performance database while the RX 9070 XT carries ten separate scores. The RX 9070 XT also holds a 55th percentile ranking against all GPUs, while the 820M sits at the 50th percentile, a figure that reflects its position among integrated parts rather than any direct comparison to the 9070 XT. The architectural gap between RDNA 3.5 and RDNA 4.0 is substantial, and the specification sheet confirms that these are not competing products but rather complementary tiers of AMD's lineup.

FAQ

Q: Which GPU has the higher boost clock speed?

A: The AMD Radeon RX 9070 XT boosts to 2970 MHz, while the AMD Radeon 820M boosts to 2800 MHz. The 9070 XT also has a base clock of 1660 MHz and a game clock of 2400 MHz, whereas the 820M has a base clock of 400 MHz.

Q: How much memory does each GPU have?

A: The RX 9070 XT comes with 16 GB of GDDR6 memory on a 256-bit bus, delivering 644.6 GB/s of bandwidth. The 820M uses System Shared memory, with its bandwidth listed as System Dependent, meaning it draws from the host system's RAM.

Q: What is the transistor count of the RX 9070 XT?

A: The RX 9070 XT packs 53,900 million transistors on a 357 mm² die, giving it a transistor density of 151.0M per mm². The 820M's transistor count and die size are listed as unknown in the database.

Q: Does the RX 9070 XT support ray tracing?

A: Yes, the RX 9070 XT has 64 ray tracing cores. The 820M also includes ray tracing support but with only 2 RT cores, reflecting its integrated design.

Q: What is the power draw of each GPU?

A: The RX 9070 XT has a TDP of 304 W and requires a 700 W suggested PSU, using two 8-pin power connectors. The 820M has a TDP of 15 W and uses no power connectors, as it is an integrated graphics processor.

Q: When was each GPU released?

A: The RX 9070 XT was released on 2025-03-05 with a launch MSRP of 599 USD. The 820M was released on 2025-02-28 and has no launch MSRP listed.

Architecture Differences

The two GPUs come from different generations of AMD's RDNA architecture. The 820M uses RDNA 3.5, built on the Krackan Point 2 chip, and belongs to the Navi III IGP generation for Strix Point Mobile. The RX 9070 XT uses RDNA 4.0, built on the Navi 48 chip, and belongs to the Navi IV generation within the RX 9000 series. Both are fabricated on a 4 nm process at TSMC, but the similarity ends there. The 820M is designed as an integrated graphics processor, while the 9070 XT is a dual-slot discrete card.

The compute resources differ by an order of magnitude. The 820M has 128 shading units, 8 texture mapping units, and 4 render output units. The RX 9070 XT has 4096 shading units, 256 TMUs, and 128 ROPs. Ray tracing hardware shows a 32:1 ratio as well, with 64 RT cores on the 9070 XT versus 2 on the 820M. Neither GPU has dedicated tensor cores listed, and both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Memory architecture is another major split. The 820M relies on System Shared memory, with the bus width also listed as System Shared and bandwidth as System Dependent. The RX 9070 XT uses 16 GB of GDDR6 on a 256-bit interface with 644.6 GB/s of bandwidth. The memory clock tells the story: the 9070 XT runs its memory at 2518 MHz, effective 20.1 Gbps, while the 820M has no dedicated memory clock because it shares system memory.

The bus interface also differs. The 820M connects via PCIe 4.0 x8, while the 9070 XT uses PCIe 5.0 x16. Display outputs reflect their intended use cases, with the 820M's outputs listed as Portable Device Dependent and the 9070 XT offering 1x HDMI 2.1b and 3x DisplayPort 2.1a. The 820M is an IGP with no slot width, while the 9070 XT occupies a dual-slot footprint.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the AMD Radeon 820M and the AMD Radeon RX 9070 XT. This is expected given their roles, as the 820M has no recorded benchmark scores at all and the 9070 XT has ten distinct results. The RX 9070 XT averages 13,543 across its benchmark suite, a figure that places it at the 55th percentile of all GPUs.

Looking at the RX 9070 XT's individual results, the strongest showing comes from the Geekbench Vulkan test with a score of 65,879. The Geekbench OpenCL result of 17,428 is also substantial. In Passmark tests, the G3D score reaches 26,795, while the GPU Compute score hits 15,864. DirectX-specific Passmark tests show 353 for DirectX 9, 292 for DirectX 11, and 154 for DirectX 10, with a lower DirectX 12 score of 78. The G2D score is 1,328, and the 3DMark Steel Nomad DX12 test records 7,260.

The nearest rivals to the RX 9070 XT in the database are all much older or lower-tier parts. The AMD Radeon HD 7770M averages 13,536, a 0.1% delta. The NVIDIA GeForce GTX 570 averages 13,515, a 0.2% delta. The NVIDIA P106-090 averages 13,470, a 0.5% delta. The AMD Radeon Pro 555 averages 13,407, a 1% delta. These margins are narrow, suggesting the 9070 XT's average score is closely matched by these legacy parts in the database's aggregate metric, despite the massive specification gap between them.

Since the 820M has no benchmark scores, its performance can only be assessed through its specification sheet. The 820M delivers 716.8 GFLOPS of FP32 compute, while the RX 9070 XT delivers 48.66 TFLOPS, a difference of roughly 68 times. Pixel rate shows 11.20 GPixel/s for the 820M versus 380.2 GPixel/s for the 9070 XT, and texture rate shows 22.40 GTexel/s versus 760.3 GTexel/s. These ratios reflect the 32:1 difference in shading units and the 32:1 difference in TMUs.

Specification Differences

The specification sheet highlights where these two GPUs diverge. Process node and foundry are identical: both use TSMC's 4 nm process. The architecture differs, with RDNA 3.5 on the 820M and RDNA 4.0 on the 9070 XT. The chip names are Krackan Point 2 for the 820M and Navi 48 for the 9070 XT. The 820M's transistor count and die size are unknown, while the 9070 XT lists 53,900 million transistors on a 357 mm² die with a density of 151.0M per mm².

Clock speeds show a clear hierarchy. The 820M runs at 400 MHz base and 2800 MHz boost. The 9070 XT runs at 1660 MHz base, 2400 MHz game clock, and 2970 MHz boost. Memory clocks differ fundamentally: the 820M uses System Shared memory with no dedicated clock, while the 9070 XT has a 2518 MHz memory clock running at 20.1 Gbps effective.

Compute resources scale dramatically. Shading units: 128 on the 820M versus 4096 on the 9070 XT. TMUs: 8 versus 256. ROPs: 4 versus 128. RT cores: 2 versus 64. FP32 performance: 716.8 GFLOPS versus 48.66 TFLOPS. FP16 performance matches the FP32 ratio on both, listed as 1:1. Pixel rate: 11.20 GPixel/s versus 380.2 GPixel/s. Texture rate: 22.40 GTexel/s versus 760.3 GTexel/s.

Power and physical requirements separate them further. The 820M has a 15 W TDP, no power connectors, and an IGP slot width. The 9070 XT has a 304 W TDP, dual-slot width, two 8-pin power connectors, and a 700 W suggested PSU. The bus interface is PCIe 4.0 x8 for the 820M and PCIe 5.0 x16 for the 9070 XT. Display outputs: Portable Device Dependent for the 820M, while the 9070 XT offers 1x HDMI 2.1b and 3x DisplayPort 2.1a. Both support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

The AMD Radeon 820M wins on power efficiency and integration. Its 15 W TDP allows operation without any external power connectors, making it suitable for portable devices where the display outputs are dependent on the host system. The PCIe 4.0 x8 interface is modest but appropriate for an integrated part. The 820M's predecessor is listed as Navi II IGP, and it remains in active production, targeting the mobile segment.

The AMD Radeon RX 9070 XT wins on raw performance and features. Every measurable compute metric favors the discrete card, from FP32 throughput to pixel and texture rates. The 16 GB GDDR6 memory with 644.6 GB/s bandwidth provides a dedicated pool that the 820M cannot match with its System Shared memory. The 9070 XT's PCIe 5.0 x16 interface offers greater bandwidth for data transfer. Its dual-slot design and 304 W TDP indicate a card built for sustained high-load operation, and the 700 W suggested PSU requirement reflects that positioning.

The benchmark data, though one-sided, reinforces the 9070 XT's standing. Its average score of 13,543 places it in the 55th percentile of all GPUs, with its nearest rivals being older parts like the HD 7770M and GTX 570. The 820M has no scores to analyze, so its case rests entirely on its specification sheet and its 50th percentile ranking, which appears to reflect its class of integrated graphics rather than direct competition.

The Verdict

The data supports a clear split: the AMD Radeon 820M is for systems where power draw and physical footprint matter more than graphics throughput, while the AMD Radeon RX 9070 XT is for desktops that need maximum compute capability. The 820M's 15 W TDP, System Shared memory, and IGP form factor make it a component for portable devices, and its 2 RT cores and 128 shading units provide baseline RDNA 3.5 functionality. The 9070 XT, with 4096 shading units, 64 RT cores, 16 GB of GDDR6, and a 304 W TDP, delivers the kind of performance that justifies a dual-slot card with two 8-pin connectors and a 700 W suggested PSU.

The benchmark gap is not measurable because the 820M has no recorded scores. What the database does show is that the 9070 XT averages 13,543 across ten tests, with its Geekbench Vulkan score of 65,879 standing as the highest single result. Its nearest rivals are separated by fractions of a percent, indicating that the 9070 XT sits in a tightly packed performance tier among older discrete GPUs. The 820M's 50th percentile ranking and lack of benchmarks suggest it is not intended for the same workloads.

For a builder choosing between these two, the decision comes down to the system's role. A portable device with a 15 W integrated GPU and no power connectors suits the 820M. A desktop with room for a dual-slot card, a 304 W TDP, and a 700 W PSU suits the 9070 XT. The launch MSRP of 599 USD for the 9070 XT sets its market position, while the 820M has no listed price. The specification differences are so large that they define separate product categories rather than competing options.