AMD Radeon RX 6800 vs AMD Radeon RX 7700S Comparison

AMD Radeon RX 7700S and AMD Radeon RX 6800 represent two distinct approaches within AMD’s mobile and desktop GPU lineups, separated by architecture generation and design philosophy. The recorded benchmark data reveals a split decision: the RX 6800 dominates in DirectX 12 and Vulkan workloads, while the RX 7700S delivers a commanding lead in OpenCL compute. This analysis breaks down the measured performance, architectural differences, and specification gaps to determine which GPU suits specific workloads.

Head-to-Head Benchmarks

The head-to-head results show a clear division of labor between these two cards. In the 3DMark Steel Nomad DX12 test, the AMD Radeon RX 6800 scores 3188, which is 31.5% higher than the RX 7700S’s 2185. This is the largest absolute margin in the DX12 test, indicating the RX 6800’s advantages in raw rasterization throughput and memory bandwidth translate directly into modern game engine performance. The RX 6800 also wins decisively in Geekbench Vulkan, scoring 115107 versus 36380, a staggering 68.4% advantage. Vulkan workloads clearly favor the RX 6800’s larger shader array and wider memory interface.

However, the RX 7700S strikes back in Geekbench OpenCL, where it scores 62983 against the RX 6800’s 24508. This represents a 157% delta, meaning the RX 7700S more than doubles the RX 6800’s OpenCL output. This result is particularly striking because OpenCL is often used for compute tasks like rendering, physics simulation, and machine learning inference. The RX 7700S’s RDNA 3.0 architecture with its higher FP32 throughput (20.48 TFLOPS versus 16.17 TFLOPS) explains this reversal. The data shows the RX 7700S wins 1 of the 3 head-to-head tests, while the RX 6800 wins 2, but the magnitude of the OpenCL win makes the RX 7700S a specialist rather than a generalist.

The average benchmark scores reinforce this split. The RX 7700S posts an average benchmark score of 33849, placing it in the 78th percentile of all GPUs. The RX 6800 averages 30095, sitting in the 75th percentile. Despite losing two of three head-to-head matchups, the RX 7700S holds a higher aggregate average, largely driven by that massive OpenCL score. The nearest rivals for the RX 7700S include the AMD Radeon HD 7950 (33951, delta -0.3%) and the AMD Radeon RX 480 (33997, delta -0.4%), showing it trades blows with older high-end cards. The RX 6800’s nearest rivals include the NVIDIA GeForce RTX 3070 Ti (29945, delta 0.5%) and the AMD Radeon RX 6700 (30433, delta -1.1%), positioning it in the upper mid-range tier.

Where Each One Wins

The RX 6800 is the clear choice for traditional gaming workloads. Its 31.5% edge in 3DMark Steel Nomad DX12 and 68.4% lead in Geekbench Vulkan indicate superior performance in DirectX 12 titles and Vulkan-based games. The combination of a 256-bit memory bus delivering 512.0 GB/s bandwidth versus the RX 7700S’s 128-bit bus at 288.0 GB/s gives the RX 6800 a massive advantage in texture-heavy scenes and high-resolution rendering. The RX 6800 also has 3840 shading units, 240 texture mapping units, and 96 ROPs, compared to 2048, 128, and 64 respectively on the RX 7700S. This hardware advantage translates into higher pixel rate (202.1 GPixel/s versus 160.0 GPixel/s) and texture rate (505.2 GTexel/s versus 320.0 GTexel/s). For gamers prioritizing frame rates in modern APIs, the data unequivocally favors the RX 6800.

The RX 7700S wins where compute throughput matters more than memory bandwidth. Its 157% OpenCL advantage suggests it handles GPGPU workloads, compute shaders, and certain AI inference tasks far more efficiently. The RX 7700S’s FP32 throughput of 20.48 TFLOPS exceeds the RX 6800’s 16.17 TFLOPS, and its FP16 rate of 40.96 TFLOPS (2:1) also surpasses the RX 6800’s 32.33 TFLOPS. This makes the RX 7700S a better fit for compute-heavy applications, scientific simulations, or content creation tools that leverage OpenCL. The RX 7700S also benefits from a smaller die (204 mm² versus 520 mm²) and a 6 nm process versus 7 nm, which contributes to its 100 W TDP versus the RX 6800’s 250 W TDP. For mobile or compact systems where power efficiency is critical, the RX 7700S’s lower power draw is a practical advantage, even if its gaming performance trails.

Architecture Differences

The two GPUs come from different architectural generations. The RX 7700S uses RDNA 3.0, built on TSMC’s 6 nm process, while the RX 6800 uses RDNA 2.0, built on TSMC’s 7 nm process. This node difference is significant: the RX 7700S packs 13,300 million transistors into a 204 mm² die, yielding a transistor density of 65.2M per mm². The RX 6800 contains 26,800 million transistors spread across a 520 mm² die, with a density of 51.5M per mm². The RX 7700S achieves higher density, which is a hallmark of the newer RDNA 3.0 architecture’s design efficiencies.

The RX 7700S’s chip is codenamed Navi 33, part of the Hotpink Bonefish family, and belongs to the Navi Mobile (RX 7000M) generation. The RX 6800 uses the Navi 21 chip, part of the Navi II (RX 6000) generation. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical. However, the RX 7700S has 32 ray tracing cores, while the RX 6800 has 60. Despite fewer RT cores, the RX 7700S’s newer architecture may handle ray tracing workloads differently, though the measured data does not include a dedicated RT benchmark. The RX 6800 also features a larger memory configuration: 16 GB of GDDR6 on a 256-bit bus, versus 8 GB on a 128-bit bus. This doubles the VRAM capacity and nearly doubles the bandwidth, which is critical for 4K textures and large datasets.

The RX 7700S is an integrated graphics package (IGP) with no power connectors and portable device dependent display outputs, reflecting its mobile focus. The RX 6800 is a dual-slot desktop card with 2x 8-pin power connectors, a 600 W suggested PSU, and dimensions of 267 mm length, 120 mm height, and 40 mm width. Its display outputs include 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C. The RX 7700S has no fixed dimensions or display outputs because it is designed for integration into laptops and portable devices.

Specification Differences

The specification differences between the two cards are substantial. Memory is the most obvious gap: the RX 6800 has 16 GB GDDR6 with a 256-bit bus and 512.0 GB/s bandwidth, while the RX 7700S has 8 GB GDDR6 with a 128-bit bus and 288.0 GB/s bandwidth. Clock speeds also differ: the RX 6800 runs at a base clock of 1700 MHz, a boost of 2105 MHz, and a game clock of 1815 MHz, with memory at 2000 MHz (16 Gbps effective). The RX 7700S has a base of 1500 MHz, a boost of 2500 MHz, and a game clock of 2200 MHz, with memory at 2250 MHz (18 Gbps effective). The RX 7700S boosts higher, but the RX 6800’s wider bus compensates with more total bandwidth.

Compute resources are heavily skewed toward the RX 6800: 3840 shading units, 240 TMUs, and 96 ROPs versus 2048, 128, and 64 on the RX 7700S. The RX 6800 also has 60 RT cores versus 32. However, the RX 7700S wins in raw FP32 throughput (20.48 TFLOPS versus 16.17 TFLOPS) and FP16 (40.96 versus 32.33). Power consumption is dramatically different: the RX 7700S draws 100 W, while the RX 6800 draws 250 W. The RX 6800 requires a 600 W PSU and dual 8-pin connectors, while the RX 7700S uses none. Production status also differs: the RX 7700S is active, while the RX 6800 is end-of-life. The RX 6800 was released on 2020-10-27, while the RX 7700S followed on 2023-01-03. The RX 6800 has a launch MSRP of 579 USD, which can be stated once as the recorded launch price.

FAQ

Q: Which GPU has higher raw compute throughput?

A: The AMD Radeon RX 7700S leads in FP32 performance with 20.48 TFLOPS versus the RX 6800’s 16.17 TFLOPS. Its FP16 output is also higher at 40.96 TFLOPS compared to 32.33 TFLOPS.

Q: Why does the RX 6800 win in 3DMark Steel Nomad DX12?

A: The RX 6800 scores 3188 versus 2185, a 31.5% advantage. This is driven by its larger shader array (3840 units), wider 256-bit memory bus, and higher pixel rate of 202.1 GPixel/s.

Q: Is the RX 7700S better for compute workloads?

A: Yes, the recorded Geekbench OpenCL score shows the RX 7700S at 62983 versus 24508, a 157% lead. This makes it the stronger choice for OpenCL-based applications.

Q: What is the memory capacity difference?

A: The RX 6800 has 16 GB of GDDR6 memory, while the RX 7700S has 8 GB. The RX 6800 also has a 256-bit bus with 512.0 GB/s bandwidth, versus 128-bit and 288.0 GB/s on the RX 7700S.

Q: How do their power requirements compare?

A: The RX 7700S has a 100 W TDP and requires no power connectors. The RX 6800 has a 250 W TDP, needs 2x 8-pin connectors, and suggests a 600 W PSU.

Q: Which GPU has a higher overall benchmark percentile?

A: The RX 7700S sits in the 78th percentile of all GPUs, while the RX 6800 is in the 75th percentile. The RX 7700S also has a higher average benchmark score of 33849 versus 30095.

The Verdict

The data points to a clear split based on workload type. For gaming, the AMD Radeon RX 6800 is the superior choice. Its 31.5% lead in 3DMark Steel Nomad DX12 and 68.4% lead in Geekbench Vulkan make it the better performer in modern game APIs. The 16 GB VRAM and 512.0 GB/s bandwidth also future-proof it for high-resolution textures and demanding titles. This card is end-of-life, but its performance profile remains competitive, as its nearest rivals include the NVIDIA GeForce RTX 3070 Ti and RTX 2080 Ti.

For compute-focused users, the AMD Radeon RX 7700S is the standout. Its 157% OpenCL advantage and higher FP32/FP16 throughput make it a better fit for GPGPU tasks, and its 100 W TDP with no power connectors suits compact or mobile systems. The RX 7700S is active in production, newer, and holds a higher overall percentile rank. However, its 8 GB memory and narrower bus limit its gaming ceiling. Users should choose the RX 6800 for gaming and the RX 7700S for compute-heavy workloads or power-constrained environments. The verdict is not about which is better overall, but which fits the specific use case.