AMD Radeon RX 6600 LE vs AMD Radeon RX 9070 GRE Comparison

Where Each One Wins

The recorded benchmark data draws a very clear line between these two cards. The AMD Radeon RX 9070 GRE wins the only direct head-to-head comparison available in the database, taking the Geekbench OpenCL test with a score of 109,309 against the RX 6600 LE's 69,229. That is a 36.7% margin in favor of the newer card. The RX 6600 LE does not win a single recorded comparison.

That said, the two cards occupy completely different positions in the overall GPU landscape. The RX 6600 LE sits at the 91st percentile among all GPUs, with an average benchmark score of 70,829. Its nearest rivals are a mix of professional and mobile parts: the NVIDIA RTX A3000 Mobile (average 70,140, just 1% behind), the NVIDIA Quadro P6000 (69,986, 1.2% behind), the AMD Radeon Pro WX 8200 (69,870, 1.4% behind), and the AMD Radeon RX 6650M (71,768, which leads the RX 6600 LE by 1.3%). This is a card that trades blows with mid-range and older high-end parts, and its strength is consistency rather than raw dominance.

The RX 9070 GRE, by contrast, shows an 87th percentile ranking, yet its average benchmark score of 57,367 is dragged down by the inclusion of a 3DMark Steel Nomad DX12 result of 5,424, which is a very different workload from OpenCL compute. Its nearest rivals include the Intel Arc A580 (57,756, 0.7% ahead), the AMD Radeon RX 5600 OEM (58,085, 1.2% ahead), the Intel Arc A570M (58,239, 1.5% ahead), and the AMD Radeon RX 6950 XT (58,392, 1.8% ahead). The data shows that in average terms, the RX 9070 GRE is slightly behind that group, but its OpenCL score is far above anything the RX 6600 LE can produce.

For practical use, the RX 6600 LE is the card for someone who needs a compact, efficient solution that still delivers respectable compute performance in its class. The RX 9070 GRE is the card for someone who wants substantially more compute throughput and is willing to accept a larger physical footprint and higher power demands. The wins are not distributed across multiple tests; the RX 9070 GRE simply dominates the one test both cards share.

Architecture Differences

The two cards come from different generations of AMD's RDNA architecture. The RX 6600 LE uses RDNA 2.0 on the Navi 23 chip, built on TSMC's 7 nm process. It packs 11,060 million transistors into a 237 mm² die, giving a transistor density of 46.7 million per mm². The RX 9070 GRE moves to RDNA 4.0 on the Navi 48 chip, fabricated on TSMC's 4 nm node. That chip contains 53,900 million transistors across a 357 mm² die, for a density of 151.0 million per mm². The newer part more than quadruples transistor count while only increasing die size by about 50%.

Core counts follow the same pattern. The RX 6600 LE has 1,792 shading units, 112 texture mapping units, 64 raster operations pipelines, and 28 ray tracing cores. The RX 9070 GRE raises those numbers to 3,072 shading units, 192 TMUs, 96 ROPs, and 48 ray tracing cores. In every category, the newer card has roughly 70% to 80% more hardware.

Memory configurations are also very different. The RX 6600 LE uses 8 GB of GDDR6 on a 128-bit bus, with memory clocked at 1750 MHz (14 Gbps effective) for 224.0 GB/s of bandwidth. The RX 9070 GRE uses 12 GB of GDDR6 on a 192-bit bus, with memory at 2250 MHz (18 Gbps effective) for 432.0 GB/s. That is nearly double the memory bandwidth and 50% more capacity.

Clock speeds tell a nuanced story. The RX 6600 LE has a higher base clock at 1626 MHz versus 1420 MHz, but the RX 9070 GRE has a higher boost clock at 2790 MHz versus 2495 MHz, and a higher game clock at 2220 MHz versus 2045 MHz. The newer card is clearly designed to run faster under load despite the lower idle base.

The bus interface differs as well. The RX 6600 LE uses PCIe 4.0 x8, while the RX 9070 GRE uses PCIe 5.0 x16. Display outputs also differ: the RX 6600 LE offers 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the RX 9070 GRE offers 1x HDMI 2.1b and 3x DisplayPort 2.1a. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither card has tensor cores.

The power situation is stark. The RX 6600 LE has a TDP of 132 W, requires a single 8-pin power connector, and a suggested 300 W power supply. The RX 9070 GRE has a TDP of 220 W, needs two 8-pin connectors, and a suggested 550 W power supply. Physically, the RX 6600 LE is 190 mm long, 110 mm tall, and 40 mm wide, while the RX 9070 GRE has no recorded dimensions, though both are dual-slot cards.

Head-to-Head Benchmarks

The database includes one direct comparison between these two cards, and it is not close. In Geekbench OpenCL, the RX 9070 GRE scores 109,309, while the RX 6600 LE scores 69,229. That is a 36.7% delta in favor of the RX 9070 GRE. In practical terms, this means the newer card delivers roughly a third more compute throughput in a raw OpenCL workload. For tasks like video encoding, physics simulation, or any OpenCL-accelerated application, the RX 9070 GRE is the clear choice.

The RX 6600 LE has no winning benchmark in the head-to-head data. Its best showing is the Geekbench Vulkan score of 72,428, but that test has no corresponding RX 9070 GRE result in the database. The average benchmark scores tell a similar story: the RX 6600 LE averages 70,829 across its recorded tests, while the RX 9070 GRE averages 57,367, but that average is misleading because it includes the 3DMark Steel Nomad DX12 result of 5,424, which is a different kind of workload entirely. The OpenCL comparison is the only apples-to-apples metric, and it heavily favors the RX 9070 GRE.

Looking at the nearest rivals adds context. The RX 6600 LE's average score of 70,829 puts it within 1.4% of the AMD Radeon Pro WX 8200 and within 1% of the NVIDIA RTX A3000 Mobile. The RX 9070 GRE's average of 57,367 puts it within 1.8% of the AMD Radeon RX 6950 XT, though it trails that card. The RX 9070 GRE's OpenCL score of 109,309, however, is in a different class from any of those rivals' averages, suggesting that its compute performance is its standout feature.

The data also reveals a difference in test coverage. The RX 6600 LE has two recorded benchmarks (Geekbench OpenCL and Geekbench Vulkan), while the RX 9070 GRE has a 3DMark Steel Nomad DX12 result alongside its Geekbench OpenCL score. This means the RX 9070 GRE has been tested in a gaming-oriented DirectX 12 scenario, while the RX 6600 LE has not. The 3DMark score of 5,424 is not directly comparable to any RX 6600 LE result.

The Verdict

The choice between these two cards comes down to what the data actually supports. If the workload is OpenCL compute, the RX 9070 GRE is the only rational pick. It beats the RX 6600 LE by 36.7% in that specific test, and it also offers more memory, more bandwidth, and more shading units. There is no recorded scenario where the RX 6600 LE wins.

If the workload is something like Vulkan gaming, the RX 6600 LE has a recorded score of 72,428, but there is no direct RX 9070 GRE Vulkan result to compare against. The RX 9070 GRE does have a 3DMark Steel Nomad DX12 score of 5,424, but that is a different API and workload, so it cannot be used to declare a winner in Vulkan. The prudent reading of the data is that the RX 9070 GRE is the stronger card overall, but the RX 6600 LE remains a viable option for those who need a smaller, lower-power card with a modest footprint.

The RX 6600 LE is also the easier card to integrate into an existing system. Its 132 W TDP and single 8-pin connector mean it will work with a 300 W power supply, and its 190 mm length fits in smaller cases. The RX 9070 GRE requires a 550 W power supply and two 8-pin connectors, which rules out many pre-built systems and small form factor builds.

For a builder prioritizing raw compute and future-proofing, the RX 9070 GRE is the answer. For a builder with power or space constraints who still wants a competent Radeon card, the RX 6600 LE is the safer bet. The data does not support any other conclusion.

FAQ

Q: Which card is faster in OpenCL compute?

A: The AMD Radeon RX 9070 GRE scores 109,309 in Geekbench OpenCL, while the AMD Radeon RX 6600 LE scores 69,229. That is a 36.7% difference in favor of the RX 9070 GRE.

Q: Does the RX 6600 LE win any benchmark against the RX 9070 GRE?

A: No. The only direct head-to-head benchmark result shows the RX 9070 GRE winning, and the RX 6600 LE has zero recorded wins.

Q: What is the memory difference between the two cards?

A: The RX 6600 LE has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The RX 9070 GRE has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: How do the power requirements compare?

A: The RX 6600 LE has a 132 W TDP, uses a single 8-pin connector, and needs a 300 W power supply. The RX 9070 GRE has a 220 W TDP, uses two 8-pin connectors, and needs a 550 W power supply.

Q: Which card has more shading units?

A: The RX 9070 GRE has 3,072 shading units, compared to 1,792 on the RX 6600 LE. The RX 9070 GRE also has more TMUs (192 vs 112), ROPs (96 vs 64), and ray tracing cores (48 vs 28).

Q: What is the launch MSRP of the RX 9070 GRE?

A: The launch MSRP is 549 USD. The RX 6600 LE has no recorded launch MSRP in the database.

Specification Differences

| Specification | AMD Radeon RX 6600 LE | AMD Radeon RX 9070 GRE |

|----------------|----------------------|------------------------|

| Architecture | RDNA 2.0 | RDNA 4.0 |

| Chip | Navi 23 | Navi 48 |

| Process Node | 7 nm | 4 nm |

| Transistors | 11,060 million | 53,900 million |

| Die Size | 237 mm² | 357 mm² |

| Transistor Density | 46.7M / mm² | 151.0M / mm² |

| Base Clock | 1626 MHz | 1420 MHz |

| Boost Clock | 2495 MHz | 2790 MHz |

| Game Clock | 2045 MHz | 2220 MHz |

| Memory Clock | 1750 MHz (14 Gbps effective) | 2250 MHz (18 Gbps effective) |

| Memory Size | 8 GB | 12 GB |

| Memory Type | GDDR6 | GDDR6 |

| Memory Bus Width | 128 bit | 192 bit |

| Memory Bandwidth | 224.0 GB/s | 432.0 GB/s |

| Shading Units | 1792 | 3072 |

| TMUs | 112 | 192 |

| ROPs | 64 | 96 |

| Ray Tracing Cores | 28 | 48 |

| Pixel Rate | 159.7 GPixel/s | 267.8 GPixel/s |

| Texture Rate | 279.4 GTexel/s | 535.7 GTexel/s |

| FP32 | 8.942 TFLOPS | 34.28 TFLOPS |

| FP16 | 17.88 TFLOPS (2:1) | 34.28 TFLOPS (1:1) |

| TDP | 132 W | 220 W |

| Power Connectors | 1x 8-pin | 2x 8-pin |

| Suggested PSU | 300 W | 550 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | 1x HDMI 2.1b, 3x DisplayPort 2.1a |

| Dimensions | 190 mm x 110 mm x 40 mm | Not recorded |

| Release Date | 2023-12-07 | 2025-05-07 |

| Launch MSRP | Not recorded | 549 USD |