GeForce GTX 660 Rev. 2

Reference GPU

Kepler GeForce 600 Series Desktop Desktop GDDR5 2014 NVIDIA

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At a Glance

Entry Type: Reference GPU
Architecture: Kepler
Series: GeForce 600 Series
GPU Die: GK104
Launch Date: 2014-09-13
CUDA Cores: 960
TMUs: 80
ROPs: 24
Memory: 2 GB GDDR5
Bus Width: 192-bit
TDP/TBP: 140 W
Rec. PSU: 300 W
Interface: PCIe 3.0 x16
Data Confidence: Partial

GPU Specs

Identity
Entry Type	Reference GPU
Official Name	NVIDIA GeForce GTX 660 Rev. 2
GPU Codename	GK104
Architecture	Kepler
Launch Date	2014-09-13
Market Segment Notes	Desktop in GeForce 600 Series
Core Specs
GPU Die	GK104
Chip Variant / Package	BGA-1745
Process Node	TSMC 28 nm
Transistor Count	3.54 billion
Die Size	294 mm²
CUDA Cores	960
SM Count	0
TMUs	80
ROPs	24
Base Clock	980 MHz
Boost Clock	1,032 MHz
Pixel Fillrate	20.64 GP/s
Texture Fillrate	82.56 GT/s
FP32 Throughput	1.98 TFLOPS
FP64 Throughput	0.08 TFLOPS
Memory
Memory Size	2 GB
Memory Type	GDDR5
Memory Bus Width	192-bit
Memory Clock	1,502 MHz
Memory Bandwidth	144.2 GB/s
L2 Cache	MB
L1 Cache	16 KB
Board and Display
TDP / TBP	140 W
Recommended PSU	300 W
Power Connectors	1x 6-pin
Interface	PCIe 3.0 x16
Display Outputs	2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
Slot Width	Dual-slot, 241 mm length
Card Length	241 mm
Board Partner Model	Reference or OEM specification
Reference Design	NVIDIA reference design
Board Partner Notes	Exact retail board models can differ in cooler, PCB, clocks, display outputs, BIOS behavior, and power connector layout.
Software
CUDA Compute Capability	3.0
Shader Model	5.1
DirectX Support	DirectX 11.0
Vulkan Support	Vulkan 1.2
OpenGL Support	OpenGL 4.6
OpenCL Support	OpenCL 3.0
Driver Branch Notes	Driver support depends on architecture, operating system, and current NVIDIA driver branch.
Windows Support Notes	Check the current NVIDIA driver branch and OEM support policy for this exact GPU.
Linux Support Notes	Check the current NVIDIA Linux driver branch, distribution packages, and kernel compatibility for this exact GPU.

Overview

GeForce GTX 660 Rev. 2 is an NVIDIA GPU entry in the GeForce 600 Series family. It is listed with Kepler architecture and GK104 silicon.

Key reference data: 960 CUDA cores/shaders, 2 GB GDDR5 memory, 192-bit memory bus, 140 W board power class.

Board-partner cards can vary in cooler, PCB, display outputs, clocks, BIOS behavior, and power connector layout.

Why It Mattered

GeForce GTX 660 Rev. 2 belongs to the Kepler and GeForce 600 Series era around 2014, when PC graphics cards varied heavily by bus, memory chips, BIOS, cooler, and display outputs. Tracking the exact model helps retro builders distinguish period-correct boards from similarly named variants.

Collector Notes

For archival use, record the board vendor, PCB revision, bus type, memory chips and capacity, BIOS version, cooler or fan, display outputs, TV-out or DVI adapter cables, and photos of both sides of the card.

Used-Market Caution

Before buying used, confirm PCI or AGP voltage compatibility, required legacy driver and OS support, visible capacitor damage, fan noise, memory artifacts, missing breakout cables, and whether the card has been tested in period-correct hardware.

Known Issues

Known issues pending source review.

SourcesPartial

Sources reviewed: 2026-06-20

This entry is still being source-checked.

Specifications are currently based on reference/spec-dump sources. Historical notes require additional source review.

Data confidence and source status

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

Verified: core specifications and historical notes have been reviewed against listed sources.
Partial: core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
Imported: spec-only imported entry pending editorial source review.
Needs source review: narrative notes are incomplete until reviewed.

Independent reference sources

TechPowerUp GPU SpecsModel-level specification reference for this GPU entryOpen source

Derived datasets and spec dumps

RightNow GPU DatabaseOpen data inventory used for bulk normalization and cross-checking Derived/spec-dump source. Treat as a reference dataset, not independent historical verification.Open source

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Overview

Why It Mattered

Collector Notes

Used-Market Caution

Known Issues

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Independent reference sources

Derived datasets and spec dumps