AMD Radeon PRO W7700 vs AMD Radeon RX 6600 LE Comparison

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon PRO W7700 records an average benchmark score of 118,976, while the AMD Radeon RX 6600 LE records 70,829. The PRO W7700 sits at the 95th percentile of all GPUs, whereas the RX 6600 LE sits at the 91st percentile.

Q: How large is the performance gap in the Vulkan API test?

A: In the Geekbench Vulkan test, the PRO W7700 scores 129,706 against 72,428 for the RX 6600 LE, a delta of 79.1% in favor of the PRO W7700.

Q: What are the closest rivals to each card according to the database?

A: The PRO W7700's nearest rival is the NVIDIA GB10, which averages 117,393, just 1.3% behind. The RX 6600 LE's nearest rival is the NVIDIA RTX A3000 Mobile, averaging 70,140, only 1% behind.

Q: Do both cards support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the difference in memory capacity between the two?

A: The PRO W7700 has 16 GB of GDDR6 memory on a 256-bit bus, while the RX 6600 LE has 8 GB of GDDR6 on a 128-bit bus.

Q: Which card has a higher boost clock?

A: The PRO W7700 boosts to 2600 MHz, whereas the RX 6600 LE boosts to 2495 MHz.

Architecture Differences

The two GPUs come from different RDNA generations and are built on different process nodes. The AMD Radeon PRO W7700 uses the Navi 32 chip with the RDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. The AMD Radeon RX 6600 LE uses the Navi 23 chip with the RDNA 2.0 architecture, manufactured on a 7 nm process at TSMC. The process shrink gives the PRO W7700 a transistor density of 81.2 million transistors per mm², compared to 46.7 million per mm² for the RX 6600 LE.

The PRO W7700 integrates 28,100 million transistors on a 346 mm² die, while the RX 6600 LE integrates 11,060 million transistors on a 237 mm² die. This difference in transistor count and density explains much of the compute advantage seen in benchmarks.

Compute resources differ substantially. The PRO W7700 has 3,072 shading units, 192 texture mapping units, 96 ROPs, and 48 ray tracing cores. The RX 6600 LE has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. The PRO W7700 therefore offers roughly 71% more shading units, 71% more TMUs, 50% more ROPs, and 71% more ray tracing cores than the RX 6600 LE.

Memory architecture also diverges. The PRO W7700 ships with 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The RX 6600 LE ships with 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s. The PRO W7700 memory clock is 2250 MHz (18 Gbps effective) versus 1750 MHz (14 Gbps effective) for the RX 6600 LE.

The PRO W7700 uses a PCIe 4.0 x16 interface, while the RX 6600 LE uses PCIe 4.0 x8. Display outputs also differ: the PRO W7700 provides 4x DisplayPort 2.1, whereas the RX 6600 LE provides 1x HDMI 2.1 and 3x DisplayPort 1.4a. The PRO W7700 has a 190 W TDP with a suggested 450 W power supply, while the RX 6600 LE has a 132 W TDP with a suggested 300 W power supply. Both are dual-slot cards with a single 8-pin power connector.

Head-to-Head Benchmarks

The database records two head-to-head Geekbench tests, and the AMD Radeon PRO W7700 wins both. In the OpenCL test, the PRO W7700 scores 108,245 against 69,229 for the RX 6600 LE, a delta of 56.4%. In the Vulkan test, the PRO W7700 scores 129,706 against 72,428, a delta of 79.1%. The Vulkan advantage is notably larger than the OpenCL advantage, suggesting that the RDNA 3.0 architecture extracts relatively more performance in the Vulkan workload than in OpenCL when compared against the RDNA 2.0 part.

The PRO W7700's average score of 118,976 places it 1.3% ahead of the NVIDIA GB10 (117,393), 1.6% ahead of the NVIDIA RTX 4000 SFF Ada Generation (117,088), 4% ahead of the NVIDIA Tesla V100 SXM2 16 GB (114,395), and 4.4% ahead of the NVIDIA RTX A5500 Mobile (113,944). These are tight margins, meaning the PRO W7700 sits in a competitive band where small architectural differences separate adjacent products.

The RX 6600 LE's average score of 70,829 places it 1% ahead of the NVIDIA RTX A3000 Mobile (70,140), 1.2% ahead of the NVIDIA Quadro P6000 (69,986), and 1.4% ahead of the AMD Radeon Pro WX 8200 (69,870). The only neighbor above it is the AMD Radeon RX 6650M at 71,768, which leads the RX 6600 LE by 1.3%. This indicates the RX 6600 LE is positioned at the edge of a cluster of similar-performing GPUs rather than in a class of its own.

Comparing the two cards directly, the PRO W7700's average score is 68% higher than the RX 6600 LE's average score. The OpenCL delta of 56.4% and the Vulkan delta of 79.1% bracket that average, with the Vulkan test showing the larger separation. For workloads that rely on Vulkan, the PRO W7700's lead expands; for OpenCL workloads, the lead narrows but remains decisive.

Pixel and texture throughput follow the same pattern. The PRO W7700 reaches 249.6 GPixel/s and 499.2 GTexel/s, versus 159.7 GPixel/s and 279.4 GTexel/s for the RX 6600 LE. These are 56% and 79% advantages respectively, closely mirroring the benchmark deltas. FP32 compute also favors the PRO W7700: 31.95 TFLOPS versus 8.942 TFLOPS, a 257% difference. FP16 figures are 63.90 TFLOPS (2:1) versus 17.88 TFLOPS (2:1).

Specification Differences

The two cards differ across nearly every major specification category. The PRO W7700 uses the Navi 32 chip with RDNA 3.0 architecture and a 5 nm process, while the RX 6600 LE uses the Navi 23 chip with RDNA 2.0 architecture and a 7 nm process. Transistor count is 28,100 million versus 11,060 million, and die size is 346 mm² versus 237 mm². Transistor density is 81.2M per mm² versus 46.7M per mm².

Clock speeds differ modestly at the boost level: 2600 MHz for the PRO W7700 versus 2495 MHz for the RX 6600 LE. Base clocks are 1900 MHz versus 1626 MHz. The RX 6600 LE has a listed game clock of 2045 MHz, while the PRO W7700 has no game clock listed. Memory clocks are 2250 MHz (18 Gbps effective) versus 1750 MHz (14 Gbps effective).

Memory capacity is 16 GB versus 8 GB, bus width is 256-bit versus 128-bit, and bandwidth is 576.0 GB/s versus 224.0 GB/s. Shading units are 3,072 versus 1,792, TMUs are 192 versus 112, ROPs are 96 versus 64, and ray tracing cores are 48 versus 28. Pixel rate is 249.6 GPixel/s versus 159.7 GPixel/s, and texture rate is 499.2 GTexel/s versus 279.4 GTexel/s. FP32 is 31.95 TFLOPS versus 8.942 TFLOPS, and FP16 is 63.90 TFLOPS versus 17.88 TFLOPS.

TDP is 190 W versus 132 W, and suggested PSU is 450 W versus 300 W. Bus interface is PCIe 4.0 x16 versus PCIe 4.0 x8. Display outputs are 4x DisplayPort 2.1 versus 1x HDMI 2.1 and 3x DisplayPort 1.4a. The PRO W7700 measures 241 mm (9.5 inches) in length and 111 mm (4.4 inches) in height; the RX 6600 LE measures 190 mm (7.5 inches) in length, 110 mm (4.3 inches) in height, and 40 mm (1.6 inches) in width. Release dates are close: the PRO W7700 launched on 2023-11-12, and the RX 6600 LE on 2023-12-07. The PRO W7700 has a launch MSRP of 999 USD.

The Verdict

The data points to a clear hierarchy. The AMD Radeon PRO W7700 wins both recorded head-to-head tests, with a 56.4% lead in OpenCL and a 79.1% lead in Vulkan. Its average benchmark score of 118,976 is 68% above the RX 6600 LE's 70,829. Every compute metric in the database, from shading units to memory bandwidth to FP32 throughput, favors the PRO W7700 by a wide margin.

The RX 6600 LE is not without merit. Its 132 W TDP and 300 W suggested PSU make it a lower-power option, and its 91st percentile ranking shows it outperforms the majority of GPUs in the database. Its nearest rivals are all within 1.4%, meaning it competes in a dense field where small margins separate adjacent products. For workloads that fit within 8 GB of memory and do not require the PRO W7700's bandwidth, the RX 6600 LE remains competitive in its tier.

The PRO W7700, by contrast, sits in a sparser competitive band. Its nearest rival, the NVIDIA GB10, is only 1.3% behind, and the next three rivals are within 4.4%. This suggests the PRO W7700 leads its immediate class but does not dominate it. Still, against the RX 6600 LE, the PRO W7700's advantages in memory capacity, bandwidth, compute units, and API performance are decisive.

Pick the PRO W7700 for workloads that demand high FP32 throughput, large frame buffers, or heavy Vulkan utilization. Pick the RX 6600 LE for lighter workloads where its lower TDP, smaller physical footprint, and 8 GB memory configuration are sufficient. The benchmark data does not show any test where the RX 6600 LE outperforms the PRO W7700.