NVIDIA GeForce GTX 660 vs AMD Radeon RX 6700

VS

NVIDIA GeForce GTX 660

AMD Radeon RX 6700

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 10GB VRAM Radeon RX 6700 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 175W)

AMD Radeon RX 6700 's Advantages

Released 8 years and 9 months late

Boost Clock has increased by 137% (2450MHz vs 1032MHz)

More VRAM (10GB vs 2GB)

Larger VRAM bandwidth (320.0GB/s vs 144.2GB/s)

1344 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660

1.981 TFLOPS

Radeon RX 6700 +469%

11.29 TFLOPS

3DMark Time Spy

GeForce GTX 660

1308

Radeon RX 6700 +752%

11154

GeForce GTX 660

VS

Radeon RX 6700

Graphics Card

Sep 2012

Release Date

Jun 2021

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

980 MHz

Base Clock

1941 MHz

1032 MHz

Boost Clock

2450 MHz

1502 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

10GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

160bit

144.2GB/s

Bandwidth

320.0GB/s

Render Config

-

Compute Units

36

-

960

Shading Units

2304

80

TMUs

144

24

ROPs

64

-

RT Cores

36

16 KB (per SMX)

L1 Cache

128 KB per Array

384 KB

L2 Cache

3 MB

-

L3 Cache

80 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

156.8 GPixel/s

82.56 GTexel/s

Texture Rate

352.8 GTexel/s

-

FP16 (half)

22.58 TFLOPS

1.981 TFLOPS

FP32 (float)

11.29 TFLOPS

82.56 GFLOPS

FP64 (double)

705.6 GFLOPS

Board Design

140W

TDP

175W

300 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

GK106

GPU Name

Navi 22

GK106-400-A1

GPU Variant

Navi 22 XTL

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

2.54 billion

Transistors

17.2 billion

221 mm²

Die Size

335 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.5

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