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

VS

AMD Radeon RX 7800 NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 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 7800 's Advantages

Released 8 years and 4 months late

Boost Clock has increased by 171% (2800MHz vs 1032MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (576.0GB/s vs 144.2GB/s)

2880 additional rendering cores

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Lower TDP (140W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 +1783%

37.32 TFLOPS

GeForce GTX 660 Rev. 2

1.981 TFLOPS

Radeon RX 7800

VS

GeForce GTX 660 Rev. 2

Graphics Card

Jan 2023

Release Date

Sep 2014

Navi III

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1800 MHz

Base Clock

980 MHz

2800 MHz

Boost Clock

1032 MHz

2250 MHz

Memory Clock

1502 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

192bit

576.0GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

60

Compute Units

-

3840

Shading Units

960

240

TMUs

80

128

ROPs

24

-

Tensor Cores

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

384 KB

Theoretical Performance

358.4 GPixel/s

Pixel Rate

20.64 GPixel/s

672.0 GTexel/s

Texture Rate

82.56 GTexel/s

86.02 TFLOPS

FP16 (half)

-

43.01 TFLOPS

FP32 (float)

1.981 TFLOPS

1344 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

Navi 32

GPU Name

GK104

Navi 32 XT

GPU Variant

-

RDNA 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

Unknown

Transistors

3.54 billion

346 mm²

Die Size

294 mm²

Board Design

300W

TDP

140W

700 W

Suggested PSU

300 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

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

2x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.2

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.7

Shader Model

5.1

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