AMD Radeon PRO W7800 vs AMD Radeon RX 6600 LE Comparison

The Verdict

The AMD Radeon PRO W7800 and the AMD Radeon RX 6600 LE occupy completely different tiers of the GPU stack, and the benchmark data reflects this clearly. The PRO W7800 is a professional workstation card built around the Navi 31 chip with RDNA 3.0 architecture, while the RX 6600 LE is a mainstream consumer card based on Navi 23 with RDNA 2.0. The database records an average benchmark score of 164,894 for the PRO W7800 versus 70,829 for the RX 6600 LE, a gap of roughly 133%. In direct head-to-head tests, the PRO W7800 wins both recorded benchmarks: Geekbench OpenCL at 154,366 versus 69,229 (123% ahead) and Geekbench Vulkan at 175,422 versus 72,428 (142.2% ahead).

For users deciding between these two, the choice hinges on workload type and required features rather than raw speed alone. The PRO W7800 is the clear pick for professionals running compute-heavy applications, large datasets, or rendering tasks that demand 32 GB of memory and high FP32 throughput. Its 97th percentile ranking among all GPUs places it near the top of the database, with nearest rivals like the NVIDIA RTX A5500 (0.2% slower) and RTX 4500 Ada Generation (0.7% slower) showing it trades blows with top-tier workstation cards. The RX 6600 LE, at the 91st percentile, is still a solid performer but sits in a much lower performance class, competing with mobile workstation GPUs like the RTX A3000 Mobile (1% slower) and the older Quadro P6000 (1.2% slower).

The RX 6600 LE makes sense for users who need a capable dual-slot card for lighter professional workloads, entry-level CAD, or as a secondary rendering device where the 132 W TDP and single 8-pin connector fit into modest systems. It also suits users on a tighter system budget, though the database does not record pricing for the RX 6600 LE. The PRO W7800, with a recorded launch MSRP of 2,499 USD, targets buyers who need the 32 GB frame buffer and the performance headroom to handle multiple large scenes or AI inference tasks without swapping data to system memory. If the workload fits within 8 GB, the RX 6600 LE is a pragmatic choice; if it does not, the PRO W7800 is the only one of the two that can handle it.

FAQ

Q: Which card is faster in compute benchmarks?

A: The AMD Radeon PRO W7800 wins both recorded head-to-head tests. In Geekbench OpenCL, it scores 154,366 versus 69,229 for the RX 6600 LE, a 123% advantage. In Geekbench Vulkan, it scores 175,422 versus 72,428, a 142.2% advantage.

Q: How much memory do these cards have, and does it matter?

A: The PRO W7800 has 32 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The RX 6600 LE has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The PRO W7800 can hold much larger datasets in VRAM, while the RX 6600 LE will hit its memory ceiling far sooner in texture-heavy or multi-scene workloads.

Q: What is the performance difference relative to their closest rivals?

A: The PRO W7800's average score of 164,894 puts it 0.2% behind the NVIDIA RTX A5500, 0.7% behind the RTX 4500 Ada Generation, and 1.5% ahead of the A100 PCIe 40 GB. The RX 6600 LE's average of 70,829 places it 1% ahead of the RTX A3000 Mobile, 1.2% ahead of the Quadro P6000, and 1.3% behind the RX 6650M.

Q: Do both cards support DirectX 12 Ultimate?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. They also both have ray tracing cores, with the PRO W7800 featuring 70 RT cores and the RX 6600 LE featuring 28 RT cores.

Q: Which card has better display output options?

A: The PRO W7800 offers 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, while the RX 6600 LE offers 1x HDMI 2.1 and 3x DisplayPort 1.4a. The PRO W7800 uses the newer DisplayPort standard, which may matter for high refresh rate 8K or multi-monitor setups.

Q: Is the RX 6600 LE still in production?

A: Both cards are listed as Active in the database. The PRO W7800 released on April 12, 2023, and the RX 6600 LE released on December 7, 2023.

Architecture Differences

The two GPUs come from different architectural generations. The AMD Radeon PRO W7800 uses the Navi 31 chip built on RDNA 3.0 architecture with the codename Plum Bonito, fabricated on a 5 nm process at TSMC. The AMD Radeon RX 6600 LE uses the Navi 23 chip built on RDNA 2.0 architecture, fabricated on a 7 nm process, also at TSMC. This generational leap means the PRO W7800 has a significantly denser design: 57,700 million transistors on a 529 mm² die, yielding a transistor density of 109.1 million per square millimeter. The RX 6600 LE has 11,060 million transistors on a 237 mm² die, with a density of 46.7 million per square millimeter.

The PRO W7800's RDNA 3.0 implementation also brings a higher memory clock (2250 MHz, 18 Gbps effective) compared to the RX 6600 LE's 1750 MHz (14 Gbps effective). The PRO W7800 has more than double the shading units (4,480 versus 1,792), more than double the texture mapping units (280 versus 112), and double the render output units (128 versus 64). Ray tracing hardware follows the same pattern: the PRO W7800 has 70 RT cores versus 28 on the RX 6600 LE. Both support the same API feature set, including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, so software compatibility is not a differentiator.

The RX 6600 LE is part of the Radeon RX 6000 series, with its generation listed as Navi II (RX 6000), and it has a successor in Navi III. The PRO W7800 belongs to the Radeon Pro Navi (Navi III Series) generation and lists its predecessor as Radeon Pro Vega. The RX 6600 LE's predecessor is listed as Navi, suggesting a direct lineage from the first Navi parts.

Specification Differences

The two cards differ across nearly every measured specification. The PRO W7800 has a base clock of 1895 MHz and a boost clock of 2525 MHz, while the RX 6600 LE has a base clock of 1626 MHz, a boost clock of 2495 MHz, and a game clock of 2045 MHz. The memory subsystem differs sharply: 32 GB GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth for the PRO W7800, versus 8 GB GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth for the RX 6600 LE.

Compute throughput shows a wide gap. The PRO W7800 delivers 45.25 TFLOPS FP32 and 90.50 TFLOPS FP16 (2:1), while the RX 6600 LE delivers 8.942 TFLOPS FP32 and 17.88 TFLOPS FP16 (2:1). Pixel and texture rates follow: the PRO W7800 hits 323.2 GPixel/s and 707.0 GTexel/s, versus 159.7 GPixel/s and 279.4 GTexel/s for the RX 6600 LE. Power requirements diverge as well: the PRO W7800 has a 260 W TDP with 2x 8-pin connectors and a suggested 600 W PSU, while the RX 6600 LE has a 132 W TDP with 1x 8-pin connector and a suggested 300 W PSU.

Physical dimensions are similar in height and width (both 110 mm and 40 mm), but the PRO W7800 is longer at 280 mm (11 inches) versus 190 mm (7.5 inches) for the RX 6600 LE. Both are dual-slot cards. The bus interface also differs: the PRO W7800 uses PCIe 4.0 x16, while the RX 6600 LE uses PCIe 4.0 x8, which may affect bandwidth-limited workloads on older platforms. The display outputs are different as noted in the FAQ, with the PRO W7800 offering DisplayPort 2.1 and the RX 6600 LE offering HDMI 2.1 and DisplayPort 1.4a.

Head-to-Head Benchmarks

The database records two direct comparison tests, and the AMD Radeon PRO W7800 wins both. In Geekbench OpenCL, the PRO W7800 scores 154,366 against 69,229 for the RX 6600 LE, a delta of 123% in favor of the PRO W7800. This is the smaller of the two margins, but it still represents more than a doubling of raw compute performance. In Geekbench Vulkan, the PRO W7800 scores 175,422 against 72,428, a delta of 142.2%. The Vulkan result shows an even larger gap, likely reflecting the PRO W7800's higher shading unit count and newer architecture's better utilization of the Vulkan API.

Looking at the average benchmark scores, the PRO W7800's 164,894 average is 2.33 times the RX 6600 LE's 70,829 average. The PRO W7800's nearest rivals in the database are all professional or data center cards: the NVIDIA RTX A5500 at 165,217 (0.2% faster), the RTX 4500 Ada Generation at 166,094 (0.7% faster), and the A100 PCIe 40 GB at 162,504 (1.5% slower). The RX 6600 LE's nearest rivals are a mix of mobile and older workstation parts: the RTX A3000 Mobile at 70,140 (1% slower), the Quadro P6000 at 69,986 (1.2% slower), and the RX 6650M at 71,768 (1.3% faster).

The percentile rankings reinforce the gap. The PRO W7800 sits at the 97th percentile of all GPUs, meaning it outperforms 97% of the database. The RX 6600 LE sits at the 91st percentile, which is still respectable but places it well below the PRO W7800's tier. The data shows no benchmark category where the RX 6600 LE wins; the PRO W7800 takes both recorded wins.

Where Each One Wins

The AMD Radeon PRO W7800 wins in every recorded benchmark category, but the practical use cases extend beyond raw scores. Its 32 GB memory capacity and 576.0 GB/s bandwidth make it the clear choice for large-scale 3D rendering, scientific visualization, or machine learning inference where datasets exceed 8 GB. The 45.25 TFLOPS FP32 throughput and 90.50 TFLOPS FP16 performance position it for compute-heavy tasks like simulation or video processing. Its 97th percentile ranking and ability to trade within 1% of the NVIDIA RTX A5500 and RTX 4500 Ada Generation mean it belongs in a workstation for professional creators who need reliability and headroom. The dual DisplayPort 2.1 outputs also support modern high-bandwidth displays.

The AMD Radeon RX 6600 LE wins in scenarios where the workload fits within its 8 GB memory and where system integration matters more than absolute performance. Its 132 W TDP and single 8-pin connector make it far easier to install in compact or older systems with a 300 W PSU, compared to the PRO W7800's 260 W TDP and 600 W PSU requirement. Its shorter length (190 mm versus 280 mm) also fits smaller cases. For entry-level CAD, 2D or light 3D design, or as a secondary GPU for offloading specific tasks, the RX 6600 LE offers a practical balance of size, power, and capability. Its 91st percentile ranking still places it above the majority of GPUs, and its nearest rivals include the RTX A3000 Mobile and Quadro P6000, so it holds its own in professional-adjacent workloads that do not demand massive memory or compute throughput.

The deciding factor is memory and compute scale, not efficiency or footprint. If the job requires more than 8 GB of VRAM or sustained FP32/FP16 throughput beyond 9 TFLOPS, the RX 6600 LE will stall, and the PRO W7800 is the only viable option. If the job fits within 8 GB and the system cannot accommodate a longer, higher-power card, the RX 6600 LE is the sensible pick. The database shows no scenario where the RX 6600 LE outperforms the PRO W7800 in raw benchmarks, so the choice comes down to whether the PRO W7800's advantages justify its larger physical and power footprint for the intended use.