AMD Radeon 820M vs AMD Ryzen Z2 Extreme GPU Comparison

Head-to-Head Benchmarks

The AMD Radeon 820M and AMD Ryzen Z2 Extreme GPU represent two very different tiers of AMD integrated graphics, despite sharing the same RDNA 3.5 architecture. The database contains no direct head-to-head benchmark comparisons between these two parts, but the recorded data for the Ryzen Z2 Extreme GPU offers a reference point. Its single benchmark entry, 3DMark Steel Nomad DX12, produced a score of 516, placing it in the 1st percentile of all GPUs tracked. The Radeon 820M has no benchmark scores recorded and sits at the 50th percentile, which suggests the database has insufficient comparative data to establish a definitive performance ranking.

Looking at the nearest rivals for the Ryzen Z2 Extreme GPU, the data shows a tight cluster. Intel HD Graphics P4000 scored 534, which is 3.4% higher. AMD Radeon HD 6870 scored 536, also 3.7% higher. AMD Radeon HD 6750M scored 484, which is 6.6% lower. AMD Radeon HD 6770M scored 569, which is 9.3% higher. These deltas indicate the Ryzen Z2 Extreme GPU's recorded performance sits near older discrete graphics solutions from a decade prior, not modern integrated parts. The 516 score is bracketed by older GPUs, with the closest competitor being the HD 6750M at 6.6% behind.

For the Radeon 820M, the absence of benchmark scores means the database cannot compute wins or losses in a head-to-head format. The wins counter shows 0 for both parts. What can be stated from the recorded data is that the Ryzen Z2 Extreme GPU delivers 5.530 TFLOPS of FP32 compute versus 716.8 GFLOPS for the Radeon 820M. That is a 7.7x difference in raw shader throughput. The pixel rate for the Ryzen Z2 Extreme GPU is 129.6 GPixel/s versus 11.20 GPixel/s for the Radeon 820M, an 11.6x gap. Texture rate shows 172.8 GTexel/s versus 22.40 GTexel/s, an 8.0x difference. These figures, drawn directly from the specification data, indicate the Ryzen Z2 Extreme GPU holds a commanding lead in every measurable throughput metric.

Architecture Differences

Both GPUs use the RDNA 3.5 architecture and are fabricated on TSMC's 4 nm process node. The Radeon 820M is built on the Krackan Point 2 chip and belongs to the Navi III IGP generation for Strix Point Mobile. The Ryzen Z2 Extreme GPU uses the Strix Point chip and is categorized under Console GPU (AMD). The process node is identical at 4 nm, but the Ryzen Z2 Extreme GPU has a documented transistor count of 34,000 million on a 233 mm² die, with a transistor density of 145.9M per mm². The Radeon 820M's transistor count and die size are listed as unknown.

The shading unit count differs substantially. The Radeon 820M has 128 shading units, 8 texture mapping units, and 4 render output units. The Ryzen Z2 Extreme GPU has 1024 shading units, 64 TMUs, and 48 ROPs. That is an 8x increase in shading units and TMUs, and a 12x increase in ROPs. Ray tracing cores also scale: the Radeon 820M has 2, while the Ryzen Z2 Extreme GPU has 16, an 8x difference. Neither part lists tensor cores.

Clock behavior differs between the two. The Radeon 820M has a base clock of 400 MHz and a boost clock of 2800 MHz. The Ryzen Z2 Extreme GPU has a base clock of 800 MHz and a boost clock of 2700 MHz. Despite the lower boost clock, the Ryzen Z2 Extreme GPU's massive core count overwhelms the Radeon 820M's clock advantage. The memory subsystem is a major architectural split. The Radeon 820M uses system shared memory with a system dependent bandwidth. The Ryzen Z2 Extreme GPU has 16 GB of LPDDR5X memory on a 128-bit bus, delivering 128.0 GB/s of bandwidth. The memory clock for the Ryzen Z2 Extreme GPU is listed as 1000 MHz with 8 Gbps effective.

Both parts support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Radeon 820M uses a PCIe 4.0 x8 bus interface, while the Ryzen Z2 Extreme GPU has no bus interface listed. The display outputs differ: the Radeon 820M is portable device dependent, while the Ryzen Z2 Extreme GPU has a single USB Type-C output. Power delivery is also different. The Radeon 820M has a TDP of 15 W and is an IGP with no power connectors. The Ryzen Z2 Extreme GPU has a TDP of 28 W and also uses no power connectors.

Where Each One Wins

The data supports distinct usage scenarios. The Radeon 820M, with its 15 W TDP and system shared memory, is designed for power-constrained portable devices. Its lower core counts and smaller throughput figures suggest it handles basic graphics workloads, desktop compositing, and light media playback. The Ryzen Z2 Extreme GPU, with 28 W TDP and dedicated 16 GB LPDDR5X, targets more demanding scenarios. The 128.0 GB/s bandwidth and 5.530 TFLOPS FP32 performance position it for gaming and compute tasks.

In raw throughput, the Ryzen Z2 Extreme GPU wins every measured category. The FP32 output of 5.530 TFLOPS versus 716.8 GFLOPS indicates a 7.7x advantage in shader compute. The pixel rate of 129.6 GPixel/s versus 11.20 GPixel/s shows a 12x advantage in fill rate, which matters for high-resolution rendering. The texture rate of 172.8 GTexel/s versus 22.40 GTexel/s gives an 8x edge in texture-heavy scenes.

The Radeon 820M's higher boost clock of 2800 MHz versus 2700 MHz does not compensate for the core count disadvantage. However, the lower TDP of 15 W means the Radeon 820M can fit into devices where the Ryzen Z2 Extreme GPU's 28 W would be too demanding thermally. The Radeon 820M's system shared memory approach avoids the cost and complexity of dedicated memory, while the Ryzen Z2 Extreme GPU's 16 GB allocation provides consistent bandwidth regardless of system RAM.

The benchmark percentile data offers a cautionary note. The Ryzen Z2 Extreme GPU sits at the 1st percentile, meaning 99% of tracked GPUs score higher. The Radeon 820M sits at the 50th percentile with no benchmark scores, which is an odd pairing. The Ryzen Z2 Extreme GPU's nearest rivals are all older discrete GPUs, suggesting its recorded performance is modest by modern standards.

Specification Differences

The two parts differ in nearly every measurable specification. The Radeon 820M uses the Krackan Point 2 chip, while the Ryzen Z2 Extreme GPU uses Strix Point. The Radeon 820M belongs to the Navi III IGP generation, while the Ryzen Z2 Extreme GPU is categorized as Console GPU. Transistor count is unknown for the Radeon 820M but is 34,000 million for the Ryzen Z2 Extreme GPU. Die size is unknown versus 233 mm². Transistor density is not listed for the Radeon 820M but is 145.9M per mm² for the Ryzen Z2 Extreme GPU.

Base clocks differ: 400 MHz versus 800 MHz. Boost clocks are close: 2800 MHz versus 2700 MHz. Memory configuration is completely different. The Radeon 820M uses system shared memory with no size, type, bus width, or bandwidth figures. The Ryzen Z2 Extreme GPU has 16 GB of LPDDR5X on a 128-bit bus with 128.0 GB/s bandwidth and a 1000 MHz memory clock.

Shading units: 128 versus 1024. TMUs: 8 versus 64. ROPs: 4 versus 48. Ray tracing cores: 2 versus 16. Pixel rate: 11.20 GPixel/s versus 129.6 GPixel/s. Texture rate: 22.40 GTexel/s versus 172.8 GTexel/s. FP32: 716.8 GFLOPS versus 5.530 TFLOPS. FP16 is listed as 1:1 for both, meaning the same values as FP32.

TDP: 15 W versus 28 W. Slot width for the Radeon 820M is listed as IGP, while the Ryzen Z2 Extreme GPU has no slot width. Power connectors are none for both. The Radeon 820M has a PCIe 4.0 x8 interface, while the Ryzen Z2 Extreme GPU has no bus interface listed. Display outputs: portable device dependent versus 1x USB Type-C.

Release dates differ. The Radeon 820M was released on 2025-02-28. The Ryzen Z2 Extreme GPU was released on 2025-07-08. The Radeon 820M has a predecessor listed as Navi II IGP, while the Ryzen Z2 Extreme GPU has no predecessor. Neither has a successor. Neither has a launch MSRP in the database. Both share the same API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4. Both use RDNA 3.5 and TSMC 4 nm. Both are made by AMD and are currently active in production.

FAQ

Q: Which GPU has more shading units?

A: The AMD Ryzen Z2 Extreme GPU has 1024 shading units, while the AMD Radeon 820M has 128 shading units.

Q: What is the memory configuration of the AMD Ryzen Z2 Extreme GPU?

A: It has 16 GB of LPDDR5X memory on a 128-bit bus, with a bandwidth of 128.0 GB/s and a memory clock of 1000 MHz at 8 Gbps effective.

Q: How does the FP32 compute compare between the two?

A: The Ryzen Z2 Extreme GPU delivers 5.530 TFLOPS of FP32, while the Radeon 820M delivers 716.8 GFLOPS, a 7.7x difference.

Q: What TDP does the Radeon 820M have?

A: The Radeon 820M has a TDP of 15 W, compared to the Ryzen Z2 Extreme GPU's 28 W.

Q: Which GPU has a higher boost clock?

A: The Radeon 820M boosts to 2800 MHz, while the Ryzen Z2 Extreme GPU boosts to 2700 MHz.

Q: What is the recorded benchmark score for the Ryzen Z2 Extreme GPU?

A: It scored 516 in 3DMark Steel Nomad DX12, placing it in the 1st percentile. The Radeon 820M has no recorded benchmark scores.

The Verdict

The data clearly separates these two GPUs into different performance classes. The AMD Ryzen Z2 Extreme GPU dominates in every throughput metric: 5.530 TFLOPS FP32, 129.6 GPixel/s pixel rate, 172.8 GTexel/s texture rate, 16 GB dedicated memory, and 1024 shading units. The AMD Radeon 820M offers 716.8 GFLOPS, 11.20 GPixel/s, 22.40 GTexel/s, system shared memory, and 128 shading units. The Ryzen Z2 Extreme GPU is the choice for any workload requiring sustained graphics compute, gaming, or high-resolution output. Its 28 W TDP is higher but still within integrated graphics territory.

The Radeon 820M's advantages are limited to a higher boost clock (2800 MHz versus 2700 MHz) and lower power draw (15 W versus 28 W). It fits into ultra-portable designs where thermal and power budgets are tight. The Ryzen Z2 Extreme GPU, released later on 2025-07-08 versus 2025-02-28, represents a more capable integrated solution with dedicated memory that avoids system RAM contention.

The benchmark data for the Ryzen Z2 Extreme GPU shows a 516 score in 3DMark Steel Nomad DX12, placing it at the 1st percentile. Its nearest rivals are older discrete GPUs like the Radeon HD 6870 and HD 6770M, which score 3.7% and 9.3% higher respectively. This suggests the Ryzen Z2 Extreme GPU performs at a level comparable to early-2010s mid-range discrete graphics, not modern gaming hardware. The Radeon 820M has no benchmark data, so its real-world performance cannot be quantified from the database.

Users needing maximum integrated graphics performance should select the Ryzen Z2 Extreme GPU. Users prioritizing minimal power consumption and smaller device integration should select the Radeon 820M. The database shows no overlap in their performance envelopes, and the 7.7x FP32 gap confirms they serve entirely different market segments.