NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon RX 7950 XT

VS

NVIDIA GeForce GTX 660 Rev. 2

AMD Radeon RX 7950 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 20GB VRAM Radeon RX 7950 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Lower TDP (140W vs 300W)

AMD Radeon RX 7950 XT 's Advantages

Boost Clock has increased by 191% (3000MHz vs 1032MHz)

More VRAM (20GB vs 2GB)

Larger VRAM bandwidth (800.0GB/s vs 144.2GB/s)

4416 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2

1.981 TFLOPS

Radeon RX 7950 XT +3156%

64.51 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon RX 7950 XT

Graphics Card

Sep 2014

Release Date

Unknown

GeForce 600

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

980 MHz

Base Clock

2000 MHz

1032 MHz

Boost Clock

3000 MHz

1502 MHz

Memory Clock

2500 MHz

Memory

2GB

Memory Size

20GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

320bit

144.2GB/s

Bandwidth

800.0GB/s

Render Config

-

Compute Units

84

-

960

Shading Units

5376

80

TMUs

336

24

ROPs

192

-

RT Cores

84

16 KB (per SMX)

L1 Cache

256 KB per Array

384 KB

L2 Cache

6 MB

-

L3 Cache

80 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

576.0 GPixel/s

82.56 GTexel/s

Texture Rate

1008 GTexel/s

-

FP16 (half)

129.0 TFLOPS

1.981 TFLOPS

FP32 (float)

64.51 TFLOPS

82.56 GFLOPS

FP64 (double)

2.016 TFLOPS

Board Design

140W

TDP

300W

300 W

Suggested PSU

700 W

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

Outputs

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

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

GK104

GPU Name

Navi 31

-

GPU Variant

Navi 31 XT+

Kepler

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

3.54 billion

Transistors

57.7 billion

294 mm²

Die Size

529 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.2

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.7

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