AMD Radeon RX 6600 LE vs AMD Radeon VII Comparison

AMD Radeon RX 6600 LE and AMD Radeon VII are two very different AMD GPUs from different eras, and the benchmark data shows a clear split between raw compute power and modern feature support. The Radeon VII, an end-of-life product from 2019, dominates in the two shared benchmark tests, while the RX 6600 LE, a 2023 release built on RDNA 2.0, counters with modern API support and dramatically higher efficiency. The data indicates the Radeon VII wins decisively in raw performance, but the RX 6600 LE is the more practical choice for modern workloads.

Head-to-Head Benchmarks

The only two tests where both GPUs have directly comparable scores are Geekbench OpenCL and Geekbench Vulkan, and the AMD Radeon VII wins both by substantial margins. In Geekbench OpenCL, the Radeon VII scores 91,947 against the RX 6600 LE's 69,229, a delta of -24.7% for the RX 6600 LE. This is a massive gap that reflects the Radeon VII's larger silicon and higher raw compute throughput. The Radeon VII's FP32 performance is rated at 13.44 TFLOPS, compared to the RX 6600 LE's 8.942 TFLOPS, which explains the OpenCL advantage.

The Vulkan results tell a similar story, though the gap narrows slightly. The Radeon VII scores 91,788 while the RX 6600 LE scores 72,428, a delta of -21.1%. Despite the RX 6600 LE having a newer architecture with RDNA 2.0 and support for DirectX 12 Ultimate (12_2), the Radeon VII's sheer shading unit count—3,840 against 1,792—and texture rate of 420.0 GTexel/s versus 279.4 GTexel/s for the RX 6600 LE, carry it to victory. The Radeon VII also has a much wider 4096-bit memory bus with 1.02 TB/s bandwidth, compared to the RX 6600 LE's 128-bit bus and 224.0 GB/s, which helps in memory-heavy compute tasks.

The win count is 2-0 in favor of the AMD Radeon VII. However, the RX 6600 LE is not without its own metrics of success. Its average benchmark score across all tests is 70,829, which places it in the 91st percentile of all GPUs. The Radeon VII's average score is 66,004, placing it in the 90th percentile. This means that while the Radeon VII wins the head-to-head tests, the RX 6600 LE actually has a higher average score when considering a broader range of benchmarks not directly shared. The RX 6600 LE's nearest rivals include the AMD Radeon RX 6650M, which scores 71,768 and is 1.3% ahead, and the NVIDIA RTX A3000 Mobile at 70,140, which is 1% behind. The Radeon VII's nearest rivals include the NVIDIA Tesla T4 at 66,733 (1.1% behind) and the AMD Radeon Pro WX 9100 at 64,212 (2.8% behind).

FAQ

Q: Which GPU wins in Geekbench OpenCL?

A: The AMD Radeon VII wins with a score of 91,947, which is 24.7% higher than the RX 6600 LE's 69,229.

Q: Does the RX 6600 LE have a higher average benchmark score?

A: Yes, the RX 6600 LE has an average benchmark score of 70,829, which is higher than the Radeon VII's 66,004. This places the RX 6600 LE in the 91st percentile versus the Radeon VII's 90th.

Q: Which GPU has more memory?

A: The AMD Radeon VII has 16 GB of HBM2 memory, while the RX 6600 LE has 8 GB of GDDR6. The Radeon VII also has a significantly higher memory bandwidth of 1.02 TB/s versus 224.0 GB/s.

Q: What is the production status of each GPU?

A: The RX 6600 LE is listed as "Active" in production, while the Radeon VII is marked as "End-of-life."

Q: Which GPU has a higher boost clock?

A: The RX 6600 LE has a boost clock of 2495 MHz, which is significantly higher than the Radeon VII's 1750 MHz boost clock.

Q: Are there any ray tracing cores in either GPU?

A: The RX 6600 LE has 28 ray tracing cores, while the Radeon VII has no ray tracing cores listed.

Where Each One Wins

The AMD Radeon VII wins in raw compute-heavy benchmarks. Its 14% higher transistor count (13,230 million versus 11,060 million) and larger die size (331 mm² versus 237 mm²) give it a physical advantage in parallel workloads. The Radeon VII's FP32 throughput of 13.44 TFLOPS is 50% higher than the RX 6600 LE's 8.942 TFLOPS, which shows up clearly in the OpenCL and Vulkan tests. For users running compute tasks like rendering, scientific simulation, or heavy data processing that leverages OpenCL or Vulkan, the Radeon VII is the clear winner based on the data.

The RX 6600 LE wins in efficiency and modern feature support. Its TDP is 132 W versus the Radeon VII's 295 W, and it requires a 300 W power supply versus 600 W. The RX 6600 LE also supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Radeon VII only supports DirectX 12 (12_1) and Vulkan 1.3. It has 28 ray tracing cores, which the Radeon VII lacks entirely. For gaming workloads that use ray tracing or require the latest graphics API features, the RX 6600 LE is the better choice, even though its raw compute scores are lower. The RX 6600 LE is also an active production product, meaning it is still being made, while the Radeon VII is end-of-life.

The Radeon VII's massive 16 GB of HBM2 memory with 1.02 TB/s bandwidth is a clear win for memory-intensive tasks like large dataset processing or high-resolution texture workloads. The RX 6600 LE's 8 GB GDDR6 with 224.0 GB/s is more modest but follows a more common and modern memory configuration.

Specification Differences

The two GPUs differ significantly in nearly every specification. The RX 6600 LE has a base clock of 1626 MHz and a boost clock of 2495 MHz, while the Radeon VII has a base clock of 1400 MHz and a boost clock of 1750 MHz. The RX 6600 LE's game clock is 2045 MHz; the Radeon VII has no game clock listed. Memory configuration: the RX 6600 LE has 8 GB GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth, while the Radeon VII has 16 GB HBM2 on a 4096-bit bus with 1.02 TB/s bandwidth. The RX 6600 LE has 1,792 shading units, 112 TMUs, and 64 ROPs, while the Radeon VII has 3,840 shading units, 240 TMUs, and 64 ROPs. The RX 6600 LE has 28 ray tracing cores; the Radeon VII has none. Pixel rate: the RX 6600 LE achieves 159.7 GPixel/s, while the Radeon VII achieves 112.0 GPixel/s. Texture rate: the RX 6600 LE achieves 279.4 GTexel/s, while the Radeon VII achieves 420.0 GTexel/s. TDP is 132 W for the RX 6600 LE versus 295 W for the Radeon VII.

The power connectors differ as well: the RX 6600 LE uses a single 8-pin connector, while the Radeon VII uses two 8-pin connectors. The suggested power supply is 300 W for the RX 6600 LE and 600 W for the Radeon VII. The bus interface is PCIe 4.0 x8 for the RX 6600 LE and PCIe 3.0 x16 for the Radeon VII. Display outputs: the RX 6600 LE has 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the Radeon VII has 1x HDMI 2.0b and 3x DisplayPort 1.4a. The RX 6600 LE is 190 mm long, 110 mm tall, and 40 mm wide, while the Radeon VII is 280 mm long, 125 mm tall, and 40 mm wide. The RX 6600 LE was released on 2023-12-07, while the Radeon VII was released on 2019-02-06.

Architecture Differences

The RX 6600 LE is built on the RDNA 2.0 architecture, specifically the Navi 23 chip, and is part of the Navi II (RX 6000) generation. The Radeon VII uses the GCN 5.1 architecture with the Vega 20 chip, belonging to the Vega II (Radeon VII) generation. Both are manufactured on a 7 nm process by TSMC, but the transistor density differs: the RX 6600 LE has 46.7 million transistors per mm², while the Radeon VII has 40.0 million per mm². The RX 6600 LE has 11,060 million transistors on a 237 mm² die, while the Radeon VII has 13,230 million transistors on a 331 mm² die.

The architecture changes are significant. RDNA 2.0 brings support for DirectX 12 Ultimate and Vulkan 1.4, along with 28 dedicated ray tracing cores. GCN 5.1 only supports DirectX 12 (12_1) and Vulkan 1.3, with no ray tracing hardware. The RX 6600 LE also has a much higher boost clock of 2495 MHz, reflecting the architectural efficiency of RDNA 2.0, which allows higher clocks at lower power. The Radeon VII's GCN architecture uses a wider 4096-bit memory bus for its HBM2 memory, which is a fundamental difference in memory design. The RX 6600 LE uses a narrower 128-bit bus with GDDR6, but achieves a higher pixel rate of 159.7 GPixel/s versus the Radeon VII's 112.0 GPixel/s, indicating better per-clock efficiency in the newer architecture.

The RX 6600 LE's production status is Active, and its predecessor is listed as Navi with a successor of Navi III. The Radeon VII's predecessor is Vega and its successor is Navi, showing the generational transition. The Radeon VII had a launch MSRP of 699 USD.

The Verdict

The data presents a clear split decision. For users prioritizing raw compute performance in OpenCL and Vulkan workloads, the AMD Radeon VII is the winner. Its 24.7% lead in OpenCL and 21.1% lead in Vulkan, backed by higher FP32 throughput (13.44 TFLOPS), more shading units (3,840), and vastly superior memory bandwidth (1.02 TB/s), make it the choice for heavy compute tasks. Its 16 GB of HBM2 memory is also a significant advantage for memory-hungry applications. However, the Radeon VII is end-of-life, consumes 295 W, and lacks modern features like ray tracing and DirectX 12 Ultimate support.

For users building a new system or focusing on modern gaming, the RX 6600 LE is the better recommendation. It has a higher average benchmark score (70,829) and sits in the 91st percentile of all GPUs, above the Radeon VII's 90th percentile. It supports DirectX 12 Ultimate, Vulkan 1.4, and has 28 ray tracing cores. It consumes less than half the power (132 W versus 295 W), requires a 300 W power supply instead of 600 W, and is an active production product. Its smaller 190 mm length makes it easier to fit in compact cases, and its PCIe 4.0 x8 interface is more modern.

The Radeon VII's two head-to-head wins are significant, but the RX 6600 LE's higher overall average score and modern feature set make it the more versatile GPU for current and future software. Users who need maximum compute throughput and have the power budget should choose the Radeon VII. Those who want a balanced, efficient, and modern GPU for gaming and general use should pick the RX 6600 LE. The data does not support a single winner across all contexts; the choice depends entirely on whether raw compute or modern features matter more.