AMD Radeon RX 7800 XT vs Intel Arc B770 Comparison

The Verdict

The recorded database positions the AMD Radeon RX 7800 XT against the Intel Arc B770 as a study in contrasting design priorities. The RX 7800 XT is an established, actively produced part with a full benchmark profile, while the Arc B770 is a newer entry with a pending release date and no recorded performance measurements. The data indicates the RX 7800 XT delivers a 37.32 TFLOPS FP32 throughput, a 263 W TDP, and a 624.1 GB/s memory bandwidth, whereas the Arc B770 counters with 19.66 TFLOPS FP32, a 225 W TDP, and 512.0 GB/s bandwidth. The Arc B770 does show a higher pixel rate at 307.2 GPixel/s versus 233.3 GPixel/s for the RX 7800 XT, and a higher texture rate at 614.4 GTexel/s versus 583.2 GTexel/s.

The RX 7800 XT sits at the 51st percentile among all GPUs in the database, with an average benchmark score of 11627. Its nearest rivals include the NVIDIA GeForce GTX 1660 at 11680 average score, a 0.5% margin, and the AMD Radeon RX 6500 XT at 11842 average score, a 1.8% margin. This places the RX 7800 XT in a tightly contested mid-range performance band. The Arc B770, by contrast, has a 50th percentile placement but zero recorded average score, meaning its position is provisional until measurements arrive. The data suggests the RX 7800 XT is the safer choice for immediate deployment, while the Arc B770 remains a speculative option with architectural promise but no verified results.

FAQ

Q: Which card has a higher FP32 compute throughput?

A: The AMD Radeon RX 7800 XT records 37.32 TFLOPS FP32, while the Intel Arc B770 records 19.66 TFLOPS FP32. The RX 7800 XT is nearly double in this metric.

Q: How do the memory bandwidth figures compare?

A: The RX 7800 XT delivers 624.1 GB/s across a 256-bit bus with 16 GB GDDR6. The Arc B770 also uses 16 GB GDDR6 on a 256-bit bus but reaches 512.0 GB/s, a lower figure.

Q: What is the difference in power consumption?

A: The RX 7800 XT has a 263 W TDP and requires a 600 W suggested PSU with 2x 8-pin connectors. The Arc B770 has a 225 W TDP, a 550 W suggested PSU, and uses 1x 6-pin plus 1x 8-pin connectors.

Q: Which card has more shading units and texture mapping units?

A: The Arc B770 has 4096 shading units and 256 TMUs. The RX 7800 XT has 3840 shading units and 240 TMUs. The Arc B770 leads in both counts.

Q: What do the benchmark percentiles indicate?

A: The RX 7800 XT sits at the 51st percentile with an average score of 11627. The Arc B770 has a 50th percentile but an average score of 0, reflecting the absence of recorded benchmark data.

Q: Are the ray tracing core counts different?

A: Yes. The RX 7800 XT has 60 RT cores, while the Arc B770 has 32 RT cores. The RX 7800 XT leads in this hardware unit count.

Architecture Differences

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. Its process node is 5 nm from TSMC, with 28,100 million transistors on a 346 mm² die, yielding a transistor density of 81.2M per mm². The Arc B770 uses the BMG-G31 chip on Xe2-HPG architecture, belongs to the Battlemage (Arc 7) generation, and is also fabricated on a 5 nm TSMC node. Its die size is 368 mm², slightly larger than the RX 7800 XT, but its transistor count is listed as unknown, and no density figure is recorded.

The architecture difference is central to how each card approaches compute. RDNA 3.0 on the RX 7800 XT achieves a 1:1 FP16 to FP32 ratio, meaning both run at 37.32 TFLOPS. Xe2-HPG on the Arc B770 uses a 2:1 FP16 to FP32 ratio, so its FP16 output is 39.32 TFLOPS while FP32 drops to 19.66 TFLOPS. This suggests the Arc B770 is optimized for workloads that leverage FP16 precision, while the RX 7800 XT maintains symmetrical throughput across both. The RX 7800 XT also has a predecessor in Navi II and a successor in Navi IV, while the Arc B770 lists Alchemist as its predecessor and has no successor recorded.

The ray tracing implementation differs in core counts, with the RX 7800 XT carrying 60 RT cores versus 32 on the Arc B770. Pixel processing rates also diverge: the Arc B770 records 307.2 GPixel/s against 233.3 GPixel/s for the RX 7800 XT, indicating a higher fill-rate capability per clock. The texture rate follows a similar pattern, with the Arc B770 at 614.4 GTexel/s versus 583.2 GTexel/s.

Specification Differences

Clock speeds show a notable gap in base frequency. The RX 7800 XT runs a 1295 MHz base clock with a 2430 MHz boost and a 2124 MHz game clock. The Arc B770 starts at a 2100 MHz base clock and boosts to 2400 MHz, with no game clock recorded. Memory clocks differ as well: the RX 7800 XT memory runs at 2438 MHz with 19.5 Gbps effective, while the Arc B770 memory runs at 2000 MHz with 16 Gbps effective. This contributes to the bandwidth difference: 624.1 GB/s versus 512.0 GB/s.

The ROP count favors the Arc B770 at 128, compared to 96 on the RX 7800 XT. Shading units also favor the Arc B770 at 4096 versus 3840, and TMUs at 256 versus 240. Despite these unit advantages, the RX 7800 XT holds the FP32 compute lead due to its higher clock architecture and RDNA 3.0 design.

Power delivery differs in connector configuration: the RX 7800 XT uses 2x 8-pin, the Arc B770 uses 1x 6-pin plus 1x 8-pin. The suggested PSU is 600 W for the RX 7800 XT and 550 W for the Arc B770. Both cards are dual-slot and use PCIe 4.0 x16. Display outputs are identical: 1x HDMI 2.1a and 3x DisplayPort 2.1. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Physical dimensions are fully recorded for the RX 7800 XT: 267 mm length, 111 mm height, 50 mm width. The Arc B770 has no recorded dimensions. The RX 7800 XT has a release date of 2023-09-05, while the Arc B770 is dated 2025-12-31, indicating a later arrival. The RX 7800 XT lists a launch MSRP of 499 USD, but no pricing field exists for the Arc B770.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries for these two cards, and the Arc B770 has an empty benchmark array. Therefore, the comparison relies on the recorded scores for the RX 7800 XT alone, interpreted against the Arc B770's unmeasured status.

The RX 7800 XT produces a 3DMark Steel Nomad DX12 score of 4157. In Geekbench OpenCL it scores 18290, and in Geekbench Vulkan it reaches 54228. Passmark results show a DirectX 10 score of 121, DirectX 11 score of 249, DirectX 12 score of 93, DirectX 9 score of 304, G2D score of 1177, G3D score of 24176, and GPU compute score of 13473. Its average benchmark score is 11627.

The Arc B770 has no scores in any of these tests. Its average benchmark score is 0. The percentile data places the RX 7800 XT at 51 and the Arc B770 at 50, but the latter is provisional without measurements. The RX 7800 XT's nearest rivals include the NVIDIA GeForce GTX 1660 with a 0.5% negative delta, the AMD Radeon Pro 5500M with a 0.9% positive delta, the NVIDIA Tesla K20c with a 1.3% positive delta, and the AMD Radeon RX 6500 XT with a 1.8% negative delta. These rivals bracket the RX 7800 XT within a narrow performance window, indicating that its average score sits near several older or lower-tier cards.

Where Each One Wins

The RX 7800 XT wins on raw compute throughput. Its 37.32 TFLOPS FP32 is nearly double the Arc B770's 19.66 TFLOPS. This gives it a decisive advantage in workloads that depend on single-precision floating-point operations, such as general-purpose GPU compute and certain rendering tasks. The RX 7800 XT also holds a memory bandwidth lead at 624.1 GB/s versus 512.0 GB/s, which supports higher data throughput in texture-heavy and large-buffer scenarios. Its RT core count of 60 versus 32 suggests a stronger ray tracing hardware presence, though no benchmark scores confirm real-world behavior.

The Arc B770 wins on fill-rate metrics. Its pixel rate of 307.2 GPixel/s exceeds the RX 7800 XT's 233.3 GPixel/s, and its texture rate of 614.4 GTexel/s exceeds 583.2 GTexel/s. This indicates the Arc B770 can process more pixels and textures per second, which may benefit resolution scaling and high-detail texture workloads. The Arc B770 also has more ROPs (128 versus 96), more shading units (4096 versus 3840), and more TMUs (256 versus 240). Its FP16 throughput of 39.32 TFLOPS is higher than the RX 7800 XT's 37.32 TFLOPS, indicating an edge in half-precision compute tasks.

The power efficiency picture favors the Arc B770 on paper. Its 225 W TDP is lower than the RX 7800 XT's 263 W, and its suggested PSU is 550 W versus 600 W. For users prioritizing lower power draw and reduced PSU requirements, the Arc B770 presents a more conservative profile. However, the RX 7800 XT is an active product with verified scores, a defined release date, and a full specification sheet, while the Arc B770 lacks production status, dimensions, and any benchmark results. The data shows the RX 7800 XT as the only card with measurable evidence of performance, making it the default choice for immediate use. The Arc B770 remains an unverified alternative with architectural strengths in fill rate and FP16 compute, but its actual performance is unrecorded in the database.