NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon RX 7800 XT

VS

NVIDIA GeForce GTX 660 Rev. 2 AMD Radeon RX 7800 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 16GB VRAM Radeon RX 7800 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 263W)

AMD Radeon RX 7800 XT 's Advantages

Released 8 years and 11 months late

Boost Clock has increased by 135% (2430MHz vs 1032MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (624.1GB/s vs 144.2GB/s)

2880 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2

1.981 TFLOPS

Radeon RX 7800 XT +1783%

37.32 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon RX 7800 XT

Graphics Card

Sep 2014

Release Date

Aug 2023

GeForce 600

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

980 MHz

Base Clock

1295 MHz

1032 MHz

Boost Clock

2430 MHz

1502 MHz

Memory Clock

2438 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

624.1GB/s

Render Config

-

SM Count

-

Compute Units

60

960

Shading Units

3840

80

TMUs

240

24

ROPs

96

-

Tensor Cores

-

RT Cores

60

16 KB (per SMX)

L1 Cache

128 KB per Array

384 KB

L2 Cache

4 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

233.3 GPixel/s

82.56 GTexel/s

Texture Rate

583.2 GTexel/s

-

FP16 (half)

74.65 TFLOPS

1.981 TFLOPS

FP32 (float)

37.32 TFLOPS

82.56 GFLOPS

FP64 (double)

1166 GFLOPS

Graphics Processor

GK104

GPU Name

Navi 32

-

GPU Variant

Navi 32 XT (215-180000006)

Kepler

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

3.54 billion

Transistors

28.1 billion

294 mm²

Die Size

346 mm²

Board Design

140W

TDP

263W

300 W

Suggested PSU

600 W

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

Outputs

1x HDMI 2.1a 3x DisplayPort 2.1

1x 6-pin

Power Connectors

2x 8-pin

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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