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Radeon RX 6600 XT vs NVIDIA GeForce GTX 1660 SUPER — Specs & Performance Compared

Verdict: The Radeon RX 6600 XT is ahead of the NVIDIA GeForce GTX 1660 SUPER on all 6 shared benchmarks on file, by 13% to 161%, including 52% in 3DMark Time Spy Extreme (4,371 vs 2,876). On llama3.1:8b, the Radeon RX 6600 XT generates 20.9 tokens/s (per DEV Community) against 16.7 for the NVIDIA GeForce GTX 1660 SUPER (per DatabaseMart), best community run on file for each.

Side-by-side GPU comparison of the Radeon RX 6600 XT and the NVIDIA GeForce GTX 1660 SUPER. Released 2021 (Radeon RX 6600 XT), 2019 (NVIDIA GeForce GTX 1660 SUPER). MSRP range: $379 · $229. Specs, synthetic benchmarks, AI inference tok/s, and Amazon availability below; each column header links to that part's benchmark page.

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*Price sourced from Amazon.com. Price and availability subject to change.

Where to buy

A listing for each part; the current price and stock are on the retailer's page.

Specs side-by-side

SpecRadeon RX 6600 XTNVIDIA GeForce GTX 1660 SUPER
vram gb 86
vram type GDDR6GDDR6
tdp w 160125
cuda cores —1408
rt cores 32—
process nm 7—

Synthetic benchmarks

Each row says whether a higher or a lower number is better (ranks and times are lower-is-better). Scores come from 3DMark, Notebookcheck, OC Inside, Modders Inc, PCTestBench, HWBOT, UL Benchmarks, Digital Trends, Trusted Reviews and PassMark; each row links its sources, and where they differ the cell shows their median. Empty cells mean we don't yet have that benchmark on file for the SKU.

BenchmarkRadeon RX 6600 XTNVIDIA GeForce GTX 1660 SUPER
3DMark Fire Strike (higher is better)
Source: 3DMark, Notebookcheck		 —15,070 points
3DMark Fire Strike (Graphics) (higher is better)
Source: Notebookcheck		 —15,855 points
3DMark Fire Strike Extreme (higher is better)
Source: OC Inside		 12,070 points—
3DMark Fire Strike Ultra (higher is better)
Source: Modders Inc, PCTestBench		 —3,299 points
3DMark Port Royal (higher is better)
Source: OC Inside, HWBOT		 4,378 points1,677 points
3DMark Steel Nomad (higher is better)
Source: UL Benchmarks, Notebookcheck		 1,793 points1,248 points
3DMark Steel Nomad Light (higher is better)
Source: Notebookcheck		 —5,670 points
3DMark Time Spy (higher is better)
Source: OC Inside, Digital Trends, 3DMark		 9,221 points6,421 points
3DMark Time Spy (Graphics) (higher is better)
Source: Notebookcheck		 —5,979 points
3DMark Time Spy Extreme (higher is better)
Source: Modders Inc, PCTestBench, Trusted Reviews		 4,371 points2,876 points
PassMark G2D Mark (higher is better)
Source: PassMark		 914 pts807 pts
PassMark G3D Mark (higher is better)
Source: PassMark		 16,450 pts12,683 pts

AI inference (tokens/sec)

Top community-reported tokens-per-second results for popular LLMs whose weights fit the card's memory, each linked to its source. See the per-SKU benchmark page for the full set including quantization and prompt length.

Radeon RX 6600 XT

All Radeon RX 6600 XT AI benchmarks →

NVIDIA GeForce GTX 1660 SUPER

All NVIDIA GeForce GTX 1660 SUPER AI benchmarks →

Quick answers

Which is faster, the Radeon RX 6600 XT or the NVIDIA GeForce GTX 1660 SUPER?

The Radeon RX 6600 XT is ahead of the NVIDIA GeForce GTX 1660 SUPER on all 6 shared benchmarks on file, by 13% to 161%, including 52% in 3DMark Time Spy Extreme (4,371 vs 2,876).

Which is better for running local LLMs?

On llama3.1:8b, the Radeon RX 6600 XT generates 20.9 tokens/s (per DEV Community) against 16.7 for the NVIDIA GeForce GTX 1660 SUPER (per DatabaseMart), best community run on file for each.

What did the Radeon RX 6600 XT and the NVIDIA GeForce GTX 1660 SUPER cost at launch?

The Radeon RX 6600 XT launched at a $379 MSRP and the NVIDIA GeForce GTX 1660 SUPER at $229. Street prices drift from launch pricing; the Where to buy section links current listings.

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