AMD Radeon RX 6650 XT vs NVIDIA GeForce GTX 660 Rev. 2

VS

AMD Radeon RX 6650 XT NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6650 XT and 2GB VRAM GeForce GTX 660 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6650 XT 's Advantages

Released 7 years and 8 months late

Boost Clock has increased by 155% (2635MHz vs 1032MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (280.3GB/s vs 144.2GB/s)

1088 additional rendering cores

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Lower TDP (140W vs 176W)

Score

Benchmark

FP32 (float)

Radeon RX 6650 XT +444%

10.79 TFLOPS

GeForce GTX 660 Rev. 2

1.981 TFLOPS

Radeon RX 6650 XT

VS

GeForce GTX 660 Rev. 2

Graphics Card

May 2022

Release Date

Sep 2014

Navi II

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

2055 MHz

Base Clock

980 MHz

2635 MHz

Boost Clock

1032 MHz

2190 MHz

Memory Clock

1502 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

192bit

280.3GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

32

Compute Units

-

2048

Shading Units

960

128

TMUs

80

64

ROPs

24

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

384 KB

Theoretical Performance

168.6 GPixel/s

Pixel Rate

20.64 GPixel/s

337.3 GTexel/s

Texture Rate

82.56 GTexel/s

21.59 TFLOPS

FP16 (half)

-

10.79 TFLOPS

FP32 (float)

1.981 TFLOPS

674.6 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

Navi 23

GPU Name

GK104

Navi 23 KXT (215-130000136)

GPU Variant

-

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

3.54 billion

237 mm²

Die Size

294 mm²

Board Design

176W

TDP

140W

450 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 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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