AMD Radeon RX 7800 XT vs AMD Ryzen Z2 A GPU Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive performance gap between these two AMD GPUs, though direct head-to-head benchmark comparisons are not available in the database. The AMD Radeon RX 7800 XT carries ten recorded benchmark scores across 3DMark, Geekbench, and Passmark suites, while the AMD Ryzen Z2 A GPU has no recorded benchmark scores in the database. This absence of direct measurement data means the comparison relies on architectural specifications and the RX 7800 XT's absolute scores rather than side-by-side deltas.

The RX 7800 XT's strongest recorded result appears in Geekbench Vulkan with a score of 54,228, followed by Geekbench OpenCL at 18,290. In Passmark testing, the GPU delivers a G3D score of 24,176, a GPU compute score of 13,473, and a G2D score of 1,177. DirectX legacy tests show scores of 304 in DirectX 9, 249 in DirectX 11, 121 in DirectX 10, and 93 in DirectX 12. The 3DMark Steel Nomad DX12 result stands at 4,157. These figures place the RX 7800 XT at the 51st percentile among all GPUs in the database, with an average benchmark score of 11,627.

The nearest rivals for the RX 7800 XT illustrate its positioning. The NVIDIA GeForce GTX 1660 averages 11,680, which is 0.5% higher than the RX 7800 XT. The AMD Radeon RX 6500 XT averages 11,842, 1.8% higher. The AMD Radeon Pro 5500M averages 11,528, 0.9% lower, and the NVIDIA Tesla K20c averages 11,479, 1.3% lower. The RX 7800 XT sits within a narrow band of roughly 2% of these rivals, indicating that its average score is competitive with much older or lower-tier hardware despite its modern architecture.

Because the Ryzen Z2 A GPU has no benchmark entries, its average score is recorded as 0, and it holds the 50th percentile position by default. The database shows zero wins for either GPU in direct head-to-head matchups, which reflects the missing comparison data rather than a measured tie.

Architecture Differences

The architectural gap between these two GPUs is substantial. The RX 7800 XT uses the Navi 32 chip built on RDNA 3.0 architecture, with the codename Wheat Nas, and belongs to the Navi III (RX 7000) generation. It is fabricated on a 5 nm process at TSMC, with 28,100 million transistors on a 346 mm² die, yielding a transistor density of 81.2 million per mm². The Ryzen Z2 A GPU uses the Van Gogh chip on RDNA 2.0 architecture, classified under Console GPU (AMD) generation. It is built on a 7 nm process at TSMC, with 2,400 million transistors on a 163 mm² die, giving a transistor density of 14.7 million per mm². The RX 7800 XT packs more than 11 times the transistor count on roughly double the die area, with a density advantage of about 5.5 times.

The compute configuration differs by an order of magnitude. The RX 7800 XT contains 3,840 shading units, 240 texture mapping units, 96 render output units, and 60 ray tracing cores. The Ryzen Z2 A GPU contains 512 shading units, 32 TMUs, 16 ROPs, and 8 ray tracing cores. That is a 7.5x difference in shading units, a 7.5x difference in TMUs, a 6x difference in ROPs, and a 7.5x difference in ray tracing cores. Neither GPU includes tensor cores.

Pixel and texture throughput reflect the same scale. The RX 7800 XT achieves 233.3 GPixel/s pixel rate and 583.2 GTexel/s texture rate, while the Ryzen Z2 A GPU delivers 25.60 GPixel/s and 51.20 GTexel/s. Floating point performance shows the RX 7800 XT at 37.32 TFLOPS for both FP32 and FP16 at a 1:1 ratio, while the Ryzen Z2 A GPU delivers 1.638 TFLOPS FP32 and 3.277 TFLOPS FP16 at a 2:1 ratio. The RX 7800 XT is roughly 22.8 times faster in FP32.

Clock speeds also differ. The RX 7800 XT runs a 1295 MHz base clock, 2430 MHz boost clock, and 2124 MHz game clock. The Ryzen Z2 A GPU runs a 1000 MHz base clock and 1600 MHz boost clock with no game clock listed. Memory clocks are 2438 MHz (19.5 Gbps effective) for the RX 7800 XT versus 800 MHz (6.4 Gbps effective) for the Ryzen Z2 A GPU.

The power envelope tells a stark story. The RX 7800 XT has a TDP of 263 W, requires a 600 W suggested PSU, uses dual-slot cooling, and draws power through two 8-pin connectors. The Ryzen Z2 A GPU has a TDP of 15 W, with no slot width, power connector, or PSU specification recorded. The RX 7800 XT consumes 17.5 times the power budget.

Where Each One Wins

The RX 7800 XT wins decisively in every measurable compute and graphics category. Its shading unit count of 3,840 versus 512 gives it a massive advantage in parallel workload throughput. The 60 ray tracing cores versus 8 mean the RX 7800 XT can handle hardware-accelerated ray tracing with far greater capacity. The 624.1 GB/s memory bandwidth from a 256-bit GDDR6 interface dwarfs the 102.4 GB/s from the Ryzen Z2 A GPU's 128-bit LPDDR5 interface, making the RX 7800 XT far better suited to high-resolution texture streaming and large framebuffer workloads.

The RX 7800 XT supports PCIe 4.0 x16 bus interface, while the Ryzen Z2 A GPU records no bus interface. Display outputs also differ: the RX 7800 XT offers one HDMI 2.1a port and three DisplayPort 2.1 outputs, while the Ryzen Z2 A GPU lists a single USB Type-C output. For multi-monitor setups or high-refresh-rate external displays, the RX 7800 XT provides more connectivity options.

The Ryzen Z2 A GPU's advantage lies in power efficiency and form factor. At 15 W TDP, it operates at a fraction of the RX 7800 XT's 263 W requirement. Its 7 nm process, while older than the 5 nm node of the RX 7800 XT, still allows a compact 163 mm² die that suits embedded or console-style applications. The Ryzen Z2 A GPU has 16 GB of LPDDR5 memory, matching the RX 7800 XT's 16 GB GDDR6 capacity, though with much lower bandwidth. The lack of a slot width, power connector, or PSU recommendation suggests the Ryzen Z2 A GPU is designed for low-power integrated scenarios rather than discrete expansion.

Both GPUs share identical API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both are marked as Active in production status. The RX 7800 XT released on 2023-09-05, while the Ryzen Z2 A GPU carries a release date of 2024-12-31.

Specification Differences

The two GPUs differ across nearly every specification field.

• Process node: RX 7800 XT uses 5 nm, Ryzen Z2 A GPU uses 7 nm.
• Transistors: RX 7800 XT has 28,100 million, Ryzen Z2 A GPU has 2,400 million.
• Die size: RX 7800 XT measures 346 mm², Ryzen Z2 A GPU measures 163 mm².
• Transistor density: RX 7800 XT at 81.2M / mm², Ryzen Z2 A GPU at 14.7M / mm².
• Base clock: 1295 MHz versus 1000 MHz.
• Boost clock: 2430 MHz versus 1600 MHz.
• Game clock: 2124 MHz on RX 7800 XT, not specified on Ryzen Z2 A GPU.
• Memory clock: 2438 MHz (19.5 Gbps effective) versus 800 MHz (6.4 Gbps effective).
• Memory type: GDDR6 versus LPDDR5.
• Memory bus width: 256 bit versus 128 bit.
• Memory bandwidth: 624.1 GB/s versus 102.4 GB/s.
• Shading units: 3,840 versus 512.
• TMUs: 240 versus 32.
• ROPs: 96 versus 16.
• Ray tracing cores: 60 versus 8.
• Pixel rate: 233.3 GPixel/s versus 25.60 GPixel/s.
• Texture rate: 583.2 GTexel/s versus 51.20 GTexel/s.
• FP32: 37.32 TFLOPS versus 1.638 TFLOPS.
• FP16: 37.32 TFLOPS (1:1) versus 3.277 TFLOPS (2:1).
• TDP: 263 W versus 15 W.
• Slot width: Dual-slot versus not specified.
• Power connectors: 2x 8-pin versus not specified.
• Suggested PSU: 600 W versus not specified.
• Bus interface: PCIe 4.0 x16 versus not specified.
• Display outputs: 1x HDMI 2.1a, 3x DisplayPort 2.1 versus 1x USB Type-C.
• Dimensions: RX 7800 XT at 267 mm length, 111 mm height, 50 mm width; Ryzen Z2 A GPU dimensions not specified.
• Architecture: RDNA 3.0 versus RDNA 2.0.
• Chip: Navi 32 versus Van Gogh.
• Codename: Wheat Nas versus not specified.
• Generation: Navi III (RX 7000) versus Console GPU (AMD).
• Release date: 2023-09-05 versus 2024-12-31.
• Launch MSRP: RX 7800 XT at 499 USD, Ryzen Z2 A GPU has none recorded.
• Predecessor/successor: RX 7800 XT lists Navi II as predecessor and Navi IV as successor; Ryzen Z2 A GPU lists neither.

Fields that match include memory size at 16 GB for both, manufacturer as AMD for both, API support with DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4 for both, and production status as Active for both.

FAQ

Q: Which GPU has higher raw compute performance?

A: The RX 7800 XT delivers 37.32 TFLOPS FP32, while the Ryzen Z2 A GPU delivers 1.638 TFLOPS FP32. The RX 7800 XT is approximately 22.8 times faster in single-precision floating point.

Q: Do these GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: How much memory does each GPU have?

A: Both have 16 GB. The RX 7800 XT uses GDDR6 on a 256-bit bus with 624.1 GB/s bandwidth, while the Ryzen Z2 A GPU uses LPDDR5 on a 128-bit bus with 102.4 GB/s bandwidth.

Q: What are the power requirements for each GPU?

A: The RX 7800 XT has a TDP of 263 W, requires a 600 W suggested PSU, and uses two 8-pin power connectors. The Ryzen Z2 A GPU has a TDP of 15 W with no power connector or PSU specification recorded.

Q: Which GPU has more ray tracing cores?

A: The RX 7800 XT has 60 ray tracing cores, compared to 8 on the Ryzen Z2 A GPU.

Q: When was each GPU released?

A: The RX 7800 XT released on 2023-09-05, and the Ryzen Z2 A GPU released on 2024-12-31.

The Verdict

The data supports a clear split between these two GPUs based on intended use case. The RX 7800 XT is the only option with recorded benchmark scores, and those scores place it at the 51st percentile among all GPUs, with an average of 11,627. Its nearest rivals, all within roughly 2% of its average score, are older or lower-tier models like the GTX 1660, RX 6500 XT, Radeon Pro 5500M, and Tesla K20c. This positioning indicates that the RX 7800 XT, despite its modern RDNA 3.0 architecture and 5 nm process, performs at a level comparable to those established parts in aggregate benchmarks.

The Ryzen Z2 A GPU has no benchmark data and sits at the 50th percentile by default. Its architectural specifications, including 512 shading units, 16 GB LPDDR5 memory at 102.4 GB/s, and 15 W TDP, place it in an entirely different performance class. The RX 7800 XT outperforms it by factors of 7.5 in shading units, 6 in ROPs, and 22.8 in FP32 throughput. The RX 7800 XT also offers a 6.1 times higher memory bandwidth and a full PCIe 4.0 x16 interface with multiple display outputs.

For users seeking a discrete desktop GPU with active production status, the RX 7800 XT is the only choice with measured performance data. Its 16 GB memory capacity, 60 ray tracing cores, and 624.1 GB/s bandwidth support demanding gaming and compute workloads. The Ryzen Z2 A GPU, with its minimal power draw and single USB Type-C output, appears designed for low-power embedded or handheld scenarios where the RX 7800 XT's 263 W TDP and dual-slot footprint would be impractical. The 7 nm process and RDNA 2.0 architecture of the Ryzen Z2 A GPU predate the RX 7800 XT's 5 nm RDNA 3.0 design, and the transistor count difference of 28,100 million versus 2,400 million reflects the scale of the performance gap. Select the RX 7800 XT for desktop graphics workloads, and the Ryzen Z2 A GPU for power-constrained integrated applications.