AMD Ryzen Z2 GPU vs Intel Arc B770 Comparison

FAQ

Q: What are the core specifications of the AMD Ryzen Z2 GPU?

A: The AMD Ryzen Z2 GPU is built on the Hawk Point chip with RDNA 3.0 architecture, fabricated on a 4 nm process by TSMC. It contains 25,390 million transistors on a 178 mm² die, with 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. It uses 16 GB of LPDDR5X memory on a 128-bit bus, delivering 119.9 GB/s of bandwidth.

Q: What are the core specifications of the Intel Arc B770?

A: The Intel Arc B770 uses the BMG-G31 chip with Xe2-HPG architecture, belonging to the Battlemage (Arc 7) generation. It is manufactured on a 5 nm process by TSMC with a die size of 368 mm². The GPU has 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. It pairs 16 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s of bandwidth.

Q: How do the clock speeds compare between the two GPUs?

A: The AMD Ryzen Z2 GPU has a base clock of 800 MHz and a boost clock of 2700 MHz, with memory running at 937 MHz (7.5 Gbps effective). The Intel Arc B770 has a higher base clock of 2100 MHz but a lower boost clock of 2400 MHz, with memory at 2000 MHz (16 Gbps effective).

Q: What are the differences in power requirements?

A: The AMD Ryzen Z2 GPU has a TDP of 28 W and requires no power connectors. The Intel Arc B770 has a TDP of 225 W, uses a dual-slot cooler, requires a 1x 6-pin plus 1x 8-pin power connector setup, and recommends a 550 W power supply.

Q: Which APIs do both GPUs support?

A: Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This means they are equally matched in terms of API feature levels, including hardware ray tracing support through DirectX 12 Ultimate.

Q: What are the display output capabilities of each GPU?

A: The AMD Ryzen Z2 GPU provides a single USB Type-C display output. The Intel Arc B770 offers a more extensive set with 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs.

Where Each One Wins

The Intel Arc B770 dominates in raw throughput metrics. Its pixel rate of 307.2 GPixel/s is significantly higher than the AMD Ryzen Z2 GPU's 86.40 GPixel/s. Similarly, the texture rate of 614.4 GTexel/s on the B770 compares to 129.6 GTexel/s on the Z2 GPU, indicating the Intel part is built for high-resolution rendering and texture-heavy workloads.

In compute performance, the B770 delivers 19.66 TFLOPS of FP32 throughput versus 8.294 TFLOPS on the AMD part. For FP16 workloads, the B770 reaches 39.32 TFLOPS with a 2:1 ratio, while the Z2 GPU offers 8.294 TFLOPS at a 1:1 ratio. This makes the Intel GPU more capable for mixed-precision compute tasks common in AI inference and certain content creation workflows.

The AMD Ryzen Z2 GPU wins decisively in efficiency and form factor. With a 28 W TDP, it operates at a fraction of the power draw of the B770's 225 W TDP. The Z2 GPU requires no external power connectors, making it suitable for compact or mobile systems. Its 178 mm² die size and 4 nm process node also indicate a smaller physical footprint compared to the B770's 368 mm² die.

Memory bandwidth is another clear win for Intel. The B770's 512.0 GB/s bandwidth is over four times the 119.9 GB/s available on the AMD part. This advantage matters most in bandwidth-sensitive scenarios such as 4K texture streaming, ray tracing acceleration structures, and high-frame-rate gaming at high resolutions.

For connectivity, the Intel Arc B770 provides a more flexible display configuration with four outputs (1x HDMI 2.1a and 3x DisplayPort 2.1) versus a single USB Type-C on the AMD part. The B770 also uses PCIe 4.0 x16, a standard desktop interface, whereas the Z2 GPU does not list a bus interface.

Architecture Differences

The AMD Ryzen Z2 GPU uses RDNA 3.0 architecture on the Hawk Point chip. This is a 4 nm design from TSMC with 25,390 million transistors packed into a 178 mm² die, yielding a transistor density of 142.6M per mm². The architecture supports a 1:1 FP16 to FP32 ratio, meaning both compute paths operate at the same throughput of 8.294 TFLOPS. The memory subsystem uses LPDDR5X, a low-power memory type suited for integrated or mobile contexts.

The Intel Arc B770 uses Xe2-HPG architecture on the BMG-G31 chip, belonging to the Battlemage generation. It is built on a 5 nm TSMC process with a 368 mm² die. Transistor count is listed as unknown in the database. The architecture implements a 2:1 FP16 to FP32 ratio, doubling FP16 throughput to 39.32 TFLOPS. Memory uses GDDR6, a dedicated graphics memory type with substantially higher bandwidth.

Ray tracing hardware differs in scale. The Z2 GPU has 12 ray tracing cores, while the B770 has 32. Both support DirectX 12 Ultimate, which includes ray tracing features, but the Intel part has nearly three times the dedicated RT hardware. Similarly, the B770 has 4096 shading units compared to 768 on the AMD part, a 5.33x difference in shader count.

The process nodes differ, with AMD using 4 nm and Intel using 5 nm, both from TSMC. The smaller node on the AMD side contributes to its lower power draw and higher transistor density. The B770 compensates with a larger die and more silicon area dedicated to compute and memory interface.

The B770's predecessor is listed as Alchemist, placing it in the Battlemage lineup as the Arc 7 generation. The Z2 GPU is categorized under Console GPU (AMD) generation, indicating a different target market. The AMD part's production status is Active, while the B770's production status is not recorded in the database.

Specification Differences

The two GPUs differ across nearly every major specification category. Clock speeds show a split profile: the Z2 GPU has a lower base clock of 800 MHz but a higher boost clock of 2700 MHz, while the B770 runs at 2100 MHz base and 2400 MHz boost. The memory clocks are 937 MHz (7.5 Gbps effective) for AMD versus 2000 MHz (16 Gbps effective) for Intel.

Memory configuration differs in type, bus width, and bandwidth. Both have 16 GB capacity, but the Z2 GPU uses LPDDR5X on a 128-bit bus for 119.9 GB/s, while the B770 uses GDDR6 on a 256-bit bus for 512.0 GB/s. The bus width doubles from 128-bit to 256-bit, and bandwidth quadruples.

Compute resources scale dramatically: shading units go from 768 to 4096, TMUs from 48 to 256, ROPs from 32 to 128, and ray tracing cores from 12 to 32. Pixel rate increases from 86.40 GPixel/s to 307.2 GPixel/s, and texture rate from 129.6 GTexel/s to 614.4 GTexel/s.

FP32 performance more than doubles, from 8.294 TFLOPS to 19.66 TFLOPS. FP16 performance quadruples, from 8.294 TFLOPS (1:1) to 39.32 TFLOPS (2:1). The TDP jumps from 28 W to 225 W, an eightfold increase.

Physical and power specifications differ as well. The B770 is dual-slot with 1x 6-pin plus 1x 8-pin power connectors and a suggested 550 W PSU. The Z2 GPU has no power connectors and no slot width listed. The B770 uses PCIe 4.0 x16, while the Z2 GPU has no bus interface recorded.

Display outputs differ: the Z2 GPU has a single USB Type-C, while the B770 offers 1x HDMI 2.1a and 3x DisplayPort 2.1. Release dates show the Z2 GPU launching at the end of 2024 and the B770 at the end of 2025. The die size is 178 mm² for AMD versus 368 mm² for Intel, with transistor density recorded only for the AMD part at 142.6M per mm².

Head-to-Head Benchmarks

The recorded data shows no direct benchmark scores for either GPU, and no head-to-head benchmark entries exist in the database. Both parts hold a percentile rank of 50 against all GPUs, indicating median positioning in the overall distribution. Their average benchmark scores are listed as 0, which means no measured performance data has been entered.

Without direct benchmark results, the specification deltas provide the clearest performance indicators. The B770's FP32 throughput of 19.66 TFLOPS is approximately 2.37 times the Z2 GPU's 8.294 TFLOPS. In FP16, the B770's 39.32 TFLOPS is 4.74 times the AMD part's 8.294 TFLOPS. These compute advantages suggest the Intel GPU will handle heavy shader workloads and compute tasks with substantially more headroom.

Memory bandwidth shows the largest relative gap. The B770's 512.0 GB/s is 4.27 times the Z2 GPU's 119.9 GB/s. This bandwidth advantage directly impacts texture filtering, geometry throughput, and ray tracing data access. The texture rate of 614.4 GTexel/s on the B770 versus 129.6 GTexel/s on the Z2 GPU represents a 4.74x difference, indicating the Intel part can feed its shader array far more effectively.

Pixel throughput favors the B770 at 307.2 GPixel/s versus 86.40 GPixel/s, a 3.56x advantage. The ray tracing core count triples from 12 to 32, suggesting better RT workload scaling. The shading unit count of 4096 versus 768 gives the B770 a 5.33x raw shader advantage, though the actual performance scaling depends on clock behavior and memory bandwidth.

Clock speeds present a mixed picture. The Z2 GPU boosts to 2700 MHz, which is 300 MHz higher than the B770's 2400 MHz boost. However, the B770's base clock of 2100 MHz is 1300 MHz higher than the Z2 GPU's 800 MHz base. The effective memory clock of 16 Gbps on the B770 doubles the 7.5 Gbps effective on the Z2 GPU.

The TDP difference of 28 W versus 225 W means the B770 draws approximately eight times more power. This power envelope allows the B770 to maintain high clock speeds across a larger silicon area. The Z2 GPU's lower power budget and smaller die suggest it targets efficiency-constrained environments, while the B770 targets desktop performance.

The transistor count of 25,390 million for the Z2 GPU is recorded, while the B770's transistor count is unknown. The die size difference of 178 mm² versus 368 mm² indicates the B770 uses more than double the silicon area, consistent with its larger shader array and memory interface. The B770's 256-bit memory bus doubles the Z2 GPU's 128-bit bus, directly enabling its higher bandwidth.

Both GPUs support identical API levels: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This means software compatibility is equivalent in terms of supported features. The B770's additional display outputs and PCIe 4.0 x16 interface give it better integration options for desktop systems, while the Z2 GPU's single USB Type-C output aligns with compact or embedded designs.