NVIDIA GeForce RTX 3090 vs NVIDIA GeForce GTX 660 OEM

VS

NVIDIA GeForce RTX 3090

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 3090 and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3090 's Advantages

Released 8 years and 1 months late

Boost Clock has increased by 91% (1695MHz vs 888MHz)

More VRAM (24GB vs 1536GB)

Larger VRAM bandwidth (936.2GB/s vs 134.4GB/s)

9344 additional rendering cores

NVIDIA GeForce GTX 660 OEM 's Advantages

Lower TDP (130W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 3090 +1639%

35.58 TFLOPS

GeForce GTX 660 OEM

2.046 TFLOPS

GeForce RTX 3090

VS

GeForce GTX 660 OEM

Graphics Card

Sep 2020

Release Date

Aug 2012

GeForce 30

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1395 MHz

Base Clock

823 MHz

1695 MHz

Boost Clock

888 MHz

1219 MHz

Memory Clock

1400 MHz

Memory

24GB

Memory Size

1536MB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

192bit

936.2GB/s

Bandwidth

134.4GB/s

Render Config

-

82

SM Count

-

10496

Shading Units

1152

328

TMUs

96

112

ROPs

24

328

Tensor Cores

-

82

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

6 MB

L2 Cache

384 KB

-

Theoretical Performance

189.8 GPixel/s

Pixel Rate

21.31 GPixel/s

556.0 GTexel/s

Texture Rate

85.25 GTexel/s

35.58 TFLOPS

FP16 (half)

-

35.58 TFLOPS

FP32 (float)

2.046 TFLOPS

556.0 GFLOPS

FP64 (double)

85.25 GFLOPS

Board Design

350W

TDP

130W

750 W

Suggested PSU

300 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 12-pin

Power Connectors

1x 6-pin

Graphics Processor

GA102

GPU Name

GK104

GA102-300-A1

GPU Variant

GK104-200-KD-A2

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

3.54 billion

628 mm²

Die Size

294 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

8.6

CUDA

3.0

6.6

Shader Model

5.1

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