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ASUS Dual GeForce GTX 1660 Super graphics card with two axial fans and a metal backplate

ASUS

ASUS Dual GeForce GTX 1660 Super O6G EVO 6GB graphics card

SKU CH-CR58-WWRH2

Overclocked 6 GB GDDR6 graphics card with 1408 CUDA cores, dual-fan cooling and HDMI 2.0, DisplayPort 1.4 and DVI outputs

  • Memory capacity6 GB
  • Boost frequencyOC Mode: 1860 MHz Gaming Mode (Default): 1830 MHz
  • Interface typePCI Express 3.0
  • CUDA core count1408
  • Type of memoryGDDR6
  • Core frequency1530 MHz
  • Overclocked boost clock of 1860 MHz for higher frame rates
  • 6GB GDDR6 memory at 14002 MHz effective speed for smoother textures
  • Dual-fan design delivers doubled airflow and 3x quieter operation
  • Three display outputs — HDMI 2.0, DisplayPort 1.4, DVI-D — for multi-monitor setups
  • Auto-Extreme manufacturing with Super Alloy Power II components for 15% faster performance and 2.5x longer lifespan

Dual-fan GTX 1660 Super for 1080p gaming

This ASUS graphics card uses the NVIDIA Turing architecture with 1408 CUDA cores and 6GB of GDDR6 memory. It targets gamers who want smooth frame rates at 1080p resolution. The dual-fan cooler moves more air while keeping noise low during extended sessions.

PCIe 3.0 interface limits bandwidth to 16 GB/s

The card connects through a PCI Express 3.0 x16 slot, capping theoretical throughput at 16 GB/s. This is sufficient for the GPU's 192-bit memory bus and 14002 MHz effective memory clock. Older platforms with PCIe 2.0 will reduce available bandwidth by half.

6GB GDDR6 decides 1080p texture headroom

The 6GB frame buffer paired with GDDR6 memory on a 192-bit bus sets the practical limit for texture quality at 1080p. Titles with high-resolution texture packs may exceed this capacity, forcing lower settings. The OC mode boost clock of 1860 MHz helps maintain performance within that constraint.

How it compares

Measured against everything we stock in Desktop GPUs & Video Cards, at today’s prices. Recalculated every night.

Price $357.99
Typical for this category: the median of 4,285 items is $354.99.
Memory capacity 6 GB
Lower than about 80% of the 3,563 comparable items (median 8 GB).
Boost frequency OC Mode: 1860 MHz Gaming Mode (Default): 1830 MHz
Lower than about 55% of the 1,837 comparable items (median 1.89 GHz).

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Specifications

Product
Brand nameASUS
Product lineDual
Model nameDUAL-GTX1660S-O6G-EVO
Memory
Type of memoryGDDR6
Graphics
Memory capacity6 GB
Boost frequencyOC Mode: 1860 MHz Gaming Mode (Default): 1830 MHz
CUDA core count1408
Core frequency1530 MHz
Chipset makerNVIDIA
Graphics seriesGeForce GTX 1660 SUPER
Effective memory speed14002 MHz
Memory bus width192-Bit
Ports & slots
Interface typePCI Express 3.0

Questions about this item

How do I pick between the OC and Gaming clock profiles on this card?

The card ships with two factory profiles: OC mode runs at 1860 MHz boost while Gaming mode defaults to 1830 MHz. Choose OC for maximum out-of-the-box speed or Gaming for slightly lower thermals.

What does the 1860 MHz boost clock actually deliver in a system?

The 1860 MHz boost is the peak frequency the GPU can reach under load when OC mode is selected. Sustained clocks depend on case airflow, power limit and driver behaviour, so real-world averages will sit below that peak.

Does the PCIe 3.0 x16 interface limit the 14002 MHz GDDR6 memory bandwidth?

PCIe 3.0 carries data between the card and the motherboard, while the 192-bit GDDR6 memory runs at 14002 MHz on the card itself. The slot does not cap the local memory bandwidth.

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