AMD Ryzen Z1 Extreme GPU vs AMD Ryzen Z2 GPU Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the AMD Ryzen Z1 Extreme GPU and the AMD Ryzen Z2 GPU. Both entries have an empty benchmark array, and the wins tally for each side is zero. This means the database currently holds no measured frame-rate comparisons, synthetic scores, or workload-specific results for these two parts. The absence of data is itself informative: neither GPU has accumulated measurable performance evidence in the database, so any assessment must rely on architectural specifications and memory subsystem differences rather than observed outcomes.

Both GPUs share identical compute throughput figures. The FP32 rating is 8.294 TFLOPS for each, the pixel rate is 86.40 GPixel/s for both, and the texture rate is 129.6 GTexel/s for both. The shading unit count is 768 on each, with 48 texture mapping units and 32 render output units. Ray tracing cores number 12 on both. These matching specifications indicate that the raw shader processing capacity is identical between the Z1 Extreme and the Z2. The boost clock is 2700 MHz on both, and the base clock is 800 MHz on both. The data confirms that any performance gap between them would originate from memory architecture or power delivery, not from the compute core configuration.

The most significant divergence appears in the memory subsystem. The Z1 Extreme uses 16 GB of LPDDR5 memory on a 64-bit bus, yielding 51.20 GB/s of bandwidth. The Z2 uses 16 GB of LPDDR5X memory on a 128-bit bus, yielding 119.9 GB/s of bandwidth. That is a 2.34 times increase in memory bandwidth, a figure derived directly from the recorded values. The Z2 also runs its memory at a higher effective speed, 7.5 Gbps versus 6.4 Gbps on the Z1 Extreme. This bandwidth advantage is the single largest measurable difference between the two parts, and it has direct implications for any workload that is memory-bound rather than compute-bound.

The FP16 throughput differs as well. The Z1 Extreme records 16.59 TFLOPS at a 2:1 ratio, meaning it can double its FP32 rate when operating on half-precision data. The Z2 records 8.294 TFLOPS at a 1:1 ratio, meaning it processes FP16 at the same rate as FP32. For applications that leverage FP16 arithmetic, the Z1 Extreme has a clear theoretical advantage, potentially doubling the throughput. For applications that use FP32 exclusively, the two are identical.

Architecture Differences

Both GPUs are built on the same process node, 4 nm at TSMC, and both use the Phoenix and Hawk Point chips respectively. The transistor count is identical at 25,390 million, and the die size is the same at 178 mm². Transistor density is also identical at 142.6M per mm². The architecture is RDNA 3.0 for both. The generation classification is "Console GPU (AMD)" for both, though the Z1 Extreme lists a line break in its generation field while the Z2 does not; this appears to be a formatting artifact rather than a substantive difference.

The memory type is the first major architectural split. The Z1 Extreme uses LPDDR5, while the Z2 uses LPDDR5X. The bus width doubles from 64 bits on the Z1 Extreme to 128 bits on the Z2. This doubling of the bus width is the primary driver of the bandwidth increase, though the higher memory clock on the Z2 also contributes. The effective memory speed on the Z2 is 937 MHz with 7.5 Gbps effective transfer rate, compared to 800 MHz with 6.4 Gbps effective on the Z1 Extreme.

The FP16 execution mode differs. The Z1 Extreme supports a 2:1 FP16 ratio, meaning it can issue two half-precision operations per FP32 operation. The Z2 supports a 1:1 ratio, meaning it processes FP16 at the same rate as FP32. This is a fundamental architectural difference in how each GPU handles reduced-precision workloads. The data does not specify whether this is a hardware change or a driver-level configuration, but the recorded specifications indicate a real difference in peak half-precision throughput.

The thermal design power differs slightly. The Z1 Extreme has a TDP of 30 W, while the Z2 has a TDP of 28 W. This 2 W difference is small but measurable and could affect sustained clock behavior in thermally constrained chassis. Both GPUs use no external power connectors, relying entirely on board-provided power. The display output is a single USB Type-C port on both.

Physical dimensions are recorded for the Z1 Extreme only: 280 mm in length, 111 mm in height, and 21 mm in width. The Z2 has no recorded dimensions. The Z1 Extreme has a launch MSRP of 699 USD, while the Z2 has no launch MSRP recorded. The release dates differ: the Z1 Extreme was released on 2023-06-12, and the Z2 was released on 2024-12-31. Both are listed as Active production status.

API support is identical: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 for both. Neither has tensor cores listed. Both have 12 ray tracing cores. The pixel rate and texture rate are identical, as noted previously.

Where Each One Wins

The Z2 GPU wins in memory-bound scenarios. The 119.9 GB/s bandwidth versus 51.20 GB/s on the Z1 Extreme gives the Z2 a 2.34 times advantage in raw memory throughput. This matters for workloads that stream large amounts of data, such as high-resolution texture sampling, frame buffer operations at high resolutions, or compute tasks that repeatedly access large datasets. The wider 128-bit bus also means the Z2 can sustain higher effective bandwidth under real-world conditions where memory access patterns are not perfectly linear. The Z1 Extreme's 64-bit bus is a bottleneck that the Z2 does not share.

The Z1 Extreme wins in FP16 compute scenarios. The 16.59 TFLOPS FP16 throughput is exactly double the Z2's 8.294 TFLOPS. Any application that can use half-precision arithmetic, such as certain machine learning inference workloads or graphics effects that operate on half-float data, will see a theoretical doubling of throughput on the Z1 Extreme. This is a meaningful advantage for compute-heavy tasks that are not memory-bound, since the Z1 Extreme's lower bandwidth does not constrain the arithmetic rate in such cases.

For pure FP32 compute, the two GPUs are tied. Both deliver 8.294 TFLOPS, so neither has an advantage in standard single-precision shader work. The identical shading unit counts, TMU counts, and ROP counts confirm that the compute core is the same design. The pixel rate and texture rate being identical further reinforces this.

The Z2 has a slightly lower TDP at 28 W versus 30 W on the Z1 Extreme. This gives the Z2 a minor efficiency edge in thermally limited scenarios, though the difference is small. The data does not include measured power consumption, so this is purely a specification-level observation.

The Z1 Extreme has a recorded physical footprint, while the Z2 does not. This makes the Z1 Extreme easier to integrate into systems with known mechanical constraints, but the data does not indicate whether the Z2 is smaller or larger. The Z1 Extreme also has a launch MSRP of 699 USD, which can be stated once as a reference point, but no pricing comparison is possible for the Z2 since no launch MSRP is recorded.

The Verdict

Based strictly on the recorded data, the AMD Ryzen Z2 GPU is the stronger choice for memory-intensive workloads. Its 119.9 GB/s bandwidth versus 51.20 GB/s on the Z1 Extreme is a decisive advantage, and the wider 128-bit memory bus is a structural improvement that cannot be compensated by the Z1 Extreme's identical compute core. For gaming at high resolutions, for large texture caches, or for any workload that saturates memory, the Z2 should deliver measurably better performance.

The AMD Ryzen Z1 Extreme GPU retains an advantage only in FP16 throughput, at 16.59 TFLOPS versus 8.294 TFLOPS on the Z2. This makes it the better part for half-precision compute tasks, provided those tasks do not also demand high memory bandwidth. The Z1 Extreme's lower bandwidth would limit any FP16 workload that frequently accesses large data sets.

For FP32 shader work, the two GPUs are identical in every measured compute metric. The pixel rate, texture rate, shading units, TMUs, ROPs, and ray tracing cores all match. The only differences are memory bandwidth, FP16 ratio, and a 2 W TDP gap. The Z2's lower TDP of 28 W versus 30 W gives it a marginal efficiency advantage.

The data shows no benchmark results, so no empirical verdict is possible. The specification analysis favors the Z2 for most real-world graphics workloads due to its memory bandwidth advantage. The Z1 Extreme is the better choice only for FP16-heavy compute tasks that fit within its bandwidth limits. The Z2 also has a later release date, 2024-12-31 versus 2023-06-12, which may indicate a more recent design revision despite the identical compute core.

FAQ

Q: What is the biggest performance difference between the AMD Ryzen Z1 Extreme GPU and the AMD Ryzen Z2 GPU?

A: The memory bandwidth. The Z2 delivers 119.9 GB/s over a 128-bit bus with LPDDR5X memory, while the Z1 Extreme delivers 51.20 GB/s over a 64-bit bus with LPDDR5 memory. That is a 2.34 times difference in favor of the Z2.

Q: Are the compute cores identical between the two GPUs?

A: Yes, for FP32 workloads. Both have 768 shading units, 48 TMUs, 32 ROPs, 12 ray tracing cores, and an FP32 throughput of 8.294 TFLOPS. The pixel rate is 86.40 GPixel/s and the texture rate is 129.6 GTexel/s on both.

Q: Does the Z1 Extreme have any advantage over the Z2?

A: Yes, in FP16 throughput. The Z1 Extreme records 16.59 TFLOPS at a 2:1 ratio, while the Z2 records 8.294 TFLOPS at a 1:1 ratio. The Z1 Extreme can process half-precision data at double the rate of the Z2.

Q: What are the power requirements for each GPU?

A: The Z1 Extreme has a TDP of 30 W, and the Z2 has a TDP of 28 W. Neither uses external power connectors, with both relying on board-provided power.

Q: Do the GPUs support the same software features?

A: Yes. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both have 12 ray tracing cores and no tensor cores. Both have a single USB Type-C display output.

Q: What are the release dates for these GPUs?

A: The Z1 Extreme was released on 2023-06-12, and the Z2 was released on 2024-12-31. Both are listed as Active production status. The Z1 Extreme has a launch MSRP of 699 USD, while no launch MSRP is recorded for the Z2.