AMD Radeon RX 6850M XT vs Intel Arc A770 Comparison

The AMD Radeon RX 6850M XT and Intel Arc A770 represent two distinct approaches to high-performance graphics, with the former being a mobile-first RDNA 2 part and the latter a desktop-focused Xe-HPG design. Benchmark data reveals a complex picture: the Intel Arc A770 takes a decisive lead in two of three head-to-head tests, while the AMD card counters with a single but notable Vulkan victory. The overall average benchmark scores of 78,940 for the AMD and 68,809 for the Intel further complicate the narrative, as the mobile chip holds a higher aggregate score despite losing the direct comparisons.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 6850M XT has a higher average benchmark score of 78,940 compared to the Intel Arc A770's 68,809. This places the AMD card in the 92nd percentile of all GPUs, while the Intel card sits in the 90th percentile.

Q: What is the most significant performance gap in the head-to-head tests?

A: The largest delta is in the 3DMark Steel Nomad DX12 test, where the Intel Arc A770 scores 2,969 against the AMD's 2,257. This represents a 24% advantage for Intel, the widest margin observed in any direct comparison.

Q: Where does the AMD Radeon RX 6850M XT outperform the Intel Arc A770?

A: The AMD card wins the Geekbench Vulkan test, scoring 99,483 compared to Intel's 94,284. This is a 5.5% delta in favor of AMD, showing that the RDNA 2 architecture holds a specific advantage in this API.

Q: How do the two cards compare in OpenCL compute performance?

A: The Intel Arc A770 is substantially faster in Geekbench OpenCL, recording 109,175 points versus the AMD's 85,040. That translates to a 22.1% lead for Intel in this compute-oriented workload.

Q: What are the closest rivals for each card based on average score?

A: The AMD card's nearest rival is the NVIDIA Tesla P100 PCIe 12 GB, which is 0.6% behind, while the Intel card's closest competitor is the NVIDIA CMP 90HX, which trails by 0.3%. The data shows both cards are tightly grouped with professional and mining-oriented hardware.

Q: Does the Intel Arc A770 have a higher transistor count?

A: Yes, the Intel DG2-512 chip contains 21,700 million transistors on a 406 mm² die, while the AMD Navi 22 has 17,200 million transistors on a smaller 335 mm² die. This makes Intel's chip denser at 53.4M transistors per mm² versus AMD's 51.3M.

Architecture Differences

The two GPUs are built on fundamentally different architectures, reflecting their distinct design goals. The AMD Radeon RX 6850M XT uses the RDNA 2.0 architecture on a 7 nm TSMC process, while the Intel Arc A770 employs the Xe-HPG architecture on a more advanced 6 nm TSMC node. This process advantage partially explains why Intel's DG2-512 die, at 406 mm², can pack 21,700 million transistors, compared to the Navi 22's 335 mm² and 17,200 million. The transistor density figures are close—53.4M per mm² for Intel versus 51.3M for AMD—indicating that both designs are efficiently packed.

Core configurational differences are stark. The Intel Arc A770 features 4,096 shading units, 256 texture mapping units (TMUs), and 128 raster operation units (ROPs), while the AMD card has 2,560 shading units, 160 TMUs, and 64 ROPs. This gives Intel a 1.6x advantage in raw shader count, 1.6x in TMUs, and a 2x advantage in ROPs. However, the ray tracing core counts tell a different story: AMD has 40 RT cores, while Intel has 32, suggesting that AMD's ray tracing implementation may rely on fewer but possibly more capable units.

Clock speeds also diverge significantly. The AMD chip runs at a base clock of 2321 MHz, a boost of 2581 MHz, and a game clock of 2463 MHz. The Intel part operates at a lower 2100 MHz base and 2400 MHz boost, with no game clock specified. Despite lower clocks, Intel's massive core count pushes its theoretical compute to 19.66 TFLOPS FP32 and 39.32 TFLOPS FP16 (2:1), far exceeding AMD's 13.21 TFLOPS FP32 and 26.43 TFLOPS FP16. Memory subsystems differ as well, with AMD using 12 GB of GDDR6 on a 192-bit bus for 432.0 GB/s bandwidth, while Intel offers 16 GB of GDDR6 on a 256-bit bus for 512.0 GB/s.

The form factor and power delivery are where the cards diverge most in practical terms. AMD's RX 6850M XT is an IGP (integrated graphics processor) with no power connectors and a 165 W TDP, designed for laptops. Intel's Arc A770 is a dual-slot desktop card requiring 1x 6-pin and 1x 8-pin connectors, with a 225 W TDP and a suggested 550 W power supply. The AMD card's display outputs are "Portable Device Dependent," while the Intel card offers 1x HDMI 2.1 and 3x DisplayPort 2.0.

Head-to-Head Benchmarks

The 3DMark Steel Nomad DX12 test provides the clearest evidence of Intel's raw performance advantage. The Arc A770 scores 2,969 against the RX 6850M XT's 2,257, a 24% lead. This is a substantial margin that aligns with Intel's 1.6x higher shading unit count and 2x ROP count. The result suggests that in DX12 gaming workloads, Intel's larger core configuration translates directly into higher frame rates, at least in this synthetic benchmark.

Geekbench OpenCL shows a similar story but with a slightly narrower gap. Intel scores 109,175, which is 22.1% higher than AMD's 85,040. This compute-heavy test likely leverages Intel's 4096 shading units and 19.66 TFLOPS FP32 throughput, which dwarfs AMD's 13.21 TFLOPS. The OpenCL result reinforces that for non-gaming compute tasks, the Arc A770 is the more capable processor by a wide margin.

The Vulkan benchmark is the one bright spot for AMD, with the RX 6850M XT scoring 99,483 versus Intel's 94,284, a 5.5% victory. This is intriguing because Vulkan is a low-level API that often rewards efficient driver overhead and memory layout. AMD's RDNA 2 architecture has had more time to mature its Vulkan drivers, and the 192-bit memory bus with 432.0 GB/s bandwidth appears sufficient to edge out Intel's 256-bit interface in this specific test. The result indicates that while Intel wins on raw throughput, AMD retains an advantage in API-specific efficiency.

It is notable that the head-to-head results contradict the overall average benchmark scores. Despite losing two of three tests, the AMD card's average score of 78,940 is 14.7% higher than Intel's 68,809. This discrepancy suggests that the AMD card performs much better in other benchmark suites not included in the head-to-head comparison, or that its Geekbench Metal score of 128,981 (not available for Intel) significantly boosts its aggregate. The data implies that the RX 6850M XT has a more balanced performance profile across diverse workloads, even if it loses in the specific tests chosen for direct comparison.

Specification Differences

The most obvious difference is memory capacity and bandwidth. Intel offers 16 GB of GDDR6 on a 256-bit bus, yielding 512.0 GB/s, while AMD provides 12 GB on a 192-bit bus for 432.0 GB/s. This gives Intel a 33% capacity advantage and an 18.5% bandwidth edge.

Core counts differ dramatically, with Intel fielding 4,096 shading units, 256 TMUs, and 128 ROPs versus AMD's 2,560 shading units, 160 TMUs, and 64 ROPs. Ray tracing cores are the exception, with AMD having 40 RT cores to Intel's 32. Theoretical compute rates follow the core counts: Intel reaches 19.66 TFLOPS FP32 and 39.32 TFLOPS FP16, while AMD manages 13.21 TFLOPS FP32 and 26.43 TFLOPS FP16.

Clock speeds and power characteristics are also divergent. AMD runs higher clocks (2321 MHz base, 2581 MHz boost) but consumes 165 W, while Intel operates at 2100 MHz base and 2400 MHz boost with a 225 W TDP. The process nodes differ, with AMD on 7 nm and Intel on 6 nm. Physically, AMD is an IGP with no power connectors, while Intel is a dual-slot card needing 1x 6-pin and 1x 8-pin, plus a 550 W suggested PSU.

Release timing and lineage also differ. AMD launched on January 3, 2022, as part of the Navi Mobile generation, succeeding Polaris Mobile. Intel launched on October 11, 2022, in the Alchemist generation, with Xe Graphics as its predecessor and Battlemage as its successor. The Intel card has a launch MSRP of 329 USD, while the AMD card has no listed MSRP.

The Verdict

The data supports a clear but nuanced verdict. For users prioritizing raw compute and DX12 gaming performance, the Intel Arc A770 is the superior choice. Its 24% lead in 3DMark Steel Nomad and 22.1% lead in OpenCL are decisive, and the 16 GB memory capacity provides future-proofing for large textures and datasets. The higher thermal envelope of 225 W enables this performance, making it suitable for desktop systems with adequate cooling.

For Vulkan-specific workloads, the AMD Radeon RX 6850M XT is the better option, with a 5.5% edge in that API. More importantly, its higher overall average benchmark score of 78,940 versus 68,809 suggests that it is the more consistent performer across a broader range of tests. The 92nd percentile ranking versus Intel's 90th percentile reinforces this view. The AMD card's lower TDP of 165 W and IGP form factor make it the only viable choice for mobile systems, though its "Portable Device Dependent" display outputs limit its use to laptops.

The choice ultimately depends on the use case. If the workload is known to be DX12 or OpenCL-heavy, the Intel Arc A770 offers undeniable performance advantages. If the workload is varied or Vulkan-centric, and if the system is a laptop, the AMD RX 6850M XT is the safer bet. The data does not support a universal winner; it supports two specialized tools for different jobs.

Where Each One Wins

The Intel Arc A770 wins in scenarios that leverage its massive core count and memory bandwidth. DX12 gaming benchmarks, as shown by the 3DMark Steel Nomad result, are a clear Intel stronghold. OpenCL compute tasks, which benefit from the 19.66 TFLOPS FP32 throughput, are another area where Intel dominates. The 16 GB memory capacity gives it an edge in high-resolution texture loading or large dataset processing. Desktop users with a 550 W PSU and dual-slot space will find the Arc A770 delivers superior raw performance in these areas.

The AMD Radeon RX 6850M XT wins in Vulkan-based applications, where its 5.5% lead in Geekbench Vulkan demonstrates better API-level efficiency. Its higher overall average benchmark score indicates stronger performance in untested workloads, likely benefiting from the mature RDNA 2 driver stack. The 40 RT cores, while fewer than Intel's raw count, may offer better ray tracing efficiency per core. Most critically, the 165 W TDP and IGP design make it the only option for high-performance laptops, where the Intel card's 225 W TDP and dual-slot form factor are physically impossible to accommodate. For users who prioritize portability or run Vulkan-heavy workloads, the RX 6850M XT is the clear winner.