NVIDIA GeForce GTX 660 vs NVIDIA GeForce RTX 5080

VS

NVIDIA GeForce GTX 660

NVIDIA GeForce RTX 5080

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 16GB VRAM GeForce RTX 5080 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Lower TDP (140W vs 350W)

NVIDIA GeForce RTX 5080 's Advantages

Released 12 years and 4 months late

Boost Clock has increased by 144% (2520MHz vs 1032MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (710.1GB/s vs 144.2GB/s)

9792 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660

1.981 TFLOPS

GeForce RTX 5080 +2635%

54.19 TFLOPS

GeForce GTX 660

VS

GeForce RTX 5080

Graphics Card

Sep 2012

Release Date

Jan 2025

GeForce 600

Generation

GeForce 50

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

980 MHz

Base Clock

2235 MHz

1032 MHz

Boost Clock

2520 MHz

1502 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR7

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

710.1GB/s

Render Config

-

SM Count

84

960

Shading Units

10752

80

TMUs

336

24

ROPs

128

-

Tensor Cores

336

-

RT Cores

84

16 KB (per SMX)

L1 Cache

128 KB (per SM)

384 KB

L2 Cache

64 MB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

322.6 GPixel/s

82.56 GTexel/s

Texture Rate

846.7 GTexel/s

-

FP16 (half)

54.19 TFLOPS

1.981 TFLOPS

FP32 (float)

54.19 TFLOPS

82.56 GFLOPS

FP64 (double)

846.7 GFLOPS

Board Design

140W

TDP

350W

300 W

Suggested PSU

750 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x HDMI 2.13x DisplayPort 1.4a

1x 6-pin

Power Connectors

1x 16-pin

Graphics Processor

GK106

GPU Name

GB203

GK106-400-A1

GPU Variant

GB203-400-A1

Kepler

Architecture

Blackwell 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

4 nm

2.54 billion

Transistors

Unknown

221 mm²

Die Size

377 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

10.1

5.1

Shader Model

6.8

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