AMD Radeon RX 6600 LE vs NVIDIA GeForce RTX 3090 Ti Comparison

Head-to-Head Benchmarks

The recorded data shows a complete sweep for the NVIDIA GeForce RTX 3090 Ti across the two shared benchmark tests. In Geekbench OpenCL, the RTX 3090 Ti scores 174,441 against the RX 6600 LE's 69,229, a lead of 152%. The Vulkan test tells a similar story, with the 3090 Ti at 215,633 versus 72,428, a gap of 197.7%. These are not close contests by any measure; the delta in Vulkan is nearly double the already large OpenCL difference.

Putting those scores into context, the RTX 3090 Ti sits at the 95th percentile among all GPUs in the database, while the RX 6600 LE lands at the 91st percentile. That percentile gap may seem modest, but the absolute score difference is enormous. The 3090 Ti's average benchmark score across all recorded tests is 131,938, while the 6600 LE averages 70,829. The 3090 Ti is roughly 86% higher in average score, which aligns with the head-to-head results.

The nearest rival data reinforces the tier separation. The 3090 Ti's closest competitors are the NVIDIA L4 (131,072 average, only 0.7% behind), the NVIDIA RTX 4000 Ada Generation (135,218, 2.4% ahead), the NVIDIA A10M (135,230, 2.4% ahead), and the AMD Radeon PRO W6800 (135,396, 2.6% ahead). In contrast, the RX 6600 LE competes with the NVIDIA RTX A3000 Mobile (70,140, 1% behind), the NVIDIA Quadro P6000 (69,986, 1.2% behind), the AMD Radeon RX 6650M (71,768, 1.3% ahead), and the AMD Radeon Pro WX 8200 (69,870, 1.4% behind). The 3090 Ti is fighting in a league where its rivals are workstation-class cards with much higher compute throughput, while the 6600 LE trades blows with mobile and older professional parts.

A useful way to read the data is that the 3090 Ti's Vulkan score alone (215,633) is more than three times the 6600 LE's entire average benchmark score. Even the 3090 Ti's OpenCL result (174,441) is nearly 2.5 times the 6600 LE's best recorded single-test score. The performance hierarchy is unambiguous across every metric the database tracks.

Architecture Differences

The two cards come from different foundries and process nodes. The RTX 3090 Ti uses the GA102 chip built on Samsung's 8 nm process, while the RX 6600 LE uses the Navi 23 chip on TSMC's 7 nm node. The transistor counts reflect the size difference: the GA102 packs 28,300 million transistors on a 628 mm² die, giving a density of 45.1 million transistors per mm². Navi 23 is far smaller, with 11,060 million transistors on 237 mm², but it achieves a slightly higher density of 46.7 million per mm². The smaller node and denser layout help AMD pack a competitive feature set into a much smaller chip.

Core configuration differs wildly. The 3090 Ti has 10,752 shading units, 336 texture mapping units, 112 render output units, 84 ray tracing cores, and 336 tensor cores. The 6600 LE has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores, with no tensor cores at all. That is a 6:1 ratio in shading units and a 3:1 ratio in ray tracing cores. The 3090 Ti's tensor cores are a key architectural addition for AI workloads, a feature entirely absent from the AMD part.

Clock behavior also differs. The RX 6600 LE boosts to 2,495 MHz with a game clock of 2,045 MHz, well above the 3090 Ti's 1,860 MHz boost. The AMD card relies on clock speed to close some of the compute gap, but the raw resource difference is too large to overcome. The 3090 Ti counters with a 40.00 TFLOPS FP32 rate versus 8.942 TFLOPS for the 6600 LE. In FP16, the 3090 Ti maintains a 1:1 ratio at 40.00 TFLOPS, while the 6600 LE runs at 2:1 and delivers 17.88 TFLOPS.

Memory architecture is another major divide. The 3090 Ti has 24 GB of GDDR6X on a 384-bit bus, producing 1.01 TB/s of bandwidth. The 6600 LE has 8 GB of GDDR6 on a 128-bit bus, yielding 224.0 GB/s. That is a 4.5:1 bandwidth advantage for the NVIDIA card, which matters heavily at high resolutions and in texture-heavy scenes. The 6600 LE's memory clocks at 1,750 MHz (14 Gbps effective), while the 3090 Ti's memory runs at 1,313 MHz but at 21 Gbps effective thanks to GDDR6X.

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Display outputs are identical: 1x HDMI 2.1 and 3x DisplayPort 1.4a. The bus interfaces differ slightly, with the 3090 Ti using PCIe 4.0 x16 and the 6600 LE using PCIe 4.0 x8.

FAQ

Q: Which card is faster in raw compute benchmarks?

A: The RTX 3090 Ti wins both shared tests decisively. It leads by 152% in Geekbench OpenCL (174,441 vs 69,229) and by 197.7% in Geekbench Vulkan (215,633 vs 72,428).

Q: Does the RX 6600 LE have any architectural advantage?

A: Yes, the 6600 LE is built on TSMC's 7 nm process versus Samsung's 8 nm for the 3090 Ti, and it achieves a slightly higher transistor density (46.7M per mm² vs 45.1M per mm²). It also boosts to a higher clock speed at 2,495 MHz versus 1,860 MHz.

Q: How do the power requirements compare?

A: The 3090 Ti has a 450 W TDP and requires an 850 W suggested PSU with a single 16-pin connector. The 6600 LE has a 132 W TDP, a 300 W suggested PSU, and a single 8-pin connector.

Q: Which card has more memory bandwidth?

A: The 3090 Ti has 1.01 TB/s of bandwidth from 24 GB of GDDR6X on a 384-bit bus. The 6600 LE has 224.0 GB/s from 8 GB of GDDR6 on a 128-bit bus.

Q: Are the two cards in the same performance class?

A: No. The 3090 Ti's nearest rivals are workstation cards like the NVIDIA L4 and RTX 4000 Ada Generation, all within 2.6% of its average score. The 6600 LE's rivals are the RTX A3000 Mobile and Quadro P6000, which are far lower in absolute performance.

Q: Which card is still in production?

A: The RX 6600 LE is listed as Active in production status, while the RTX 3090 Ti is End-of-life.

The Verdict

The data points to a straightforward conclusion: the RTX 3090 Ti is in a completely different performance tier. Its average benchmark score of 131,938 is nearly double the 6600 LE's 70,829. In the two directly comparable tests, it wins by margins of 152% and 197.7%. Anyone needing maximum compute throughput, large memory capacity, or tensor core acceleration should choose the 3090 Ti without hesitation.

The RX 6600 LE is the sensible pick for systems where power draw and physical size are the primary constraints. It draws 132 W versus 450 W, fits in a dual-slot 190 mm length frame versus the 3090 Ti's triple-slot 336 mm length, and requires only a 300 W PSU. It also remains in active production, whereas the 3090 Ti is end-of-life. For a compact build with modest performance needs, the 6600 LE is the practical option.

There is no scenario in the recorded data where the 6600 LE outperforms the 3090 Ti. The choice is not about which is faster, it is about whether the 3090 Ti's massive performance lead justifies its size, power, and end-of-life status. The 3090 Ti also carries a launch MSRP of 1,999 USD, a figure that reflects its flagship positioning.

Specification Differences

The two cards differ in nearly every measurable specification. The process node is 8 nm for the 3090 Ti versus 7 nm for the 6600 LE. Transistor count is 28,300 million versus 11,060 million, and die size is 628 mm² versus 237 mm². The 3090 Ti has 10,752 shading units, 336 TMUs, 112 ROPs, 84 RT cores, and 336 tensor cores; the 6600 LE has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores, with no tensor cores.

Clock speeds favor the AMD card: base 1,626 MHz versus 1,560 MHz, boost 2,495 MHz versus 1,860 MHz, and a game clock of 2,045 MHz that the 3090 Ti does not list. Memory is 24 GB GDDR6X with a 384-bit bus and 1.01 TB/s bandwidth versus 8 GB GDDR6 with a 128-bit bus and 224.0 GB/s bandwidth. Pixel rate is 208.3 GPixel/s versus 159.7 GPixel/s, and texture rate is 625.0 GTexel/s versus 279.4 GTexel/s.

FP32 compute is 40.00 TFLOPS versus 8.942 TFLOPS. FP16 is 40.00 TFLOPS (1:1) versus 17.88 TFLOPS (2:1). TDP is 450 W versus 132 W. The 3090 Ti is triple-slot with a 16-pin connector and 850 W suggested PSU; the 6600 LE is dual-slot with an 8-pin connector and 300 W suggested PSU. Bus interface is PCIe 4.0 x16 versus PCIe 4.0 x8. Dimensions are 336 mm x 140 mm x 61 mm versus 190 mm x 110 mm x 40 mm. Production status is End-of-life versus Active, and release dates are January 26, 2022 versus December 7, 2023.

Where Each One Wins

The RTX 3090 Ti wins every benchmark category where both cards are measured. In compute-heavy applications such as OpenCL workloads, its 174,441 score against 69,229 is a 152% advantage. In Vulkan-based rendering, the 215,633 versus 72,428 result is a 197.7% advantage. The 3090 Ti also dominates in memory bandwidth, raw FP32 throughput, pixel rate, texture rate, and core counts, making it the clear choice for 4K gaming, GPU render farms, machine learning inference, and any workload that can utilize tensor cores.

The RX 6600 LE wins in efficiency-focused scenarios. Its 132 W TDP means it can run on a 300 W PSU, and its dual-slot 190 mm length fits in small form factor cases where the 3090 Ti's 336 mm triple-slot design will not. The 7 nm process and higher boost clock suggest better performance per watt, though the database does not provide direct efficiency metrics. For someone building a compact, low-power system with modest resolution gaming or light creative work, the 6600 LE is the only one of the two that fits the physical and electrical constraints.

The 3090 Ti wins on longevity for demanding tasks, with 24 GB of memory that will handle large datasets and high-resolution textures for years. The 6600 LE wins on availability, as it remains in active production while the 3090 Ti is end-of-life. The choice comes down to whether the user prioritizes absolute performance and memory capacity or power efficiency and physical footprint. The benchmark data gives no reason to pick the 6600 LE for raw speed, but plenty of reason to pick it for constrained builds.