AMD Radeon RX 6400 vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon RX 6400

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 9 years and 5 months late

Boost Clock has increased by 161% (2321MHz vs 888MHz)

More VRAM (4GB vs 1536GB)

Lower TDP (53W vs 130W)

NVIDIA GeForce GTX 660 OEM 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 128.0GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400 +74%

3.565 TFLOPS

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon RX 6400

VS

GeForce GTX 660 OEM

Graphics Card

Jan 2022

Release Date

Aug 2012

Navi II

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 3.0 x16

Clock Speeds

1923 MHz

Base Clock

823 MHz

2321 MHz

Boost Clock

888 MHz

2000 MHz

Memory Clock

1400 MHz

Memory

4GB

Memory Size

1536MB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

192bit

128.0GB/s

Bandwidth

134.4GB/s

Render Config

12

Compute Units

-

768

Shading Units

1152

48

TMUs

96

32

ROPs

24

-

12

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

384 KB

16 MB

L3 Cache

-

Theoretical Performance

74.27 GPixel/s

Pixel Rate

21.31 GPixel/s

111.4 GTexel/s

Texture Rate

85.25 GTexel/s

7.130 TFLOPS

FP16 (half)

-

3.565 TFLOPS

FP32 (float)

2.046 TFLOPS

222.8 GFLOPS

FP64 (double)

85.25 GFLOPS

Board Design

53W

TDP

130W

250 W

Suggested PSU

300 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Navi 24

GPU Name

GK104

Navi 24 XL (215-135000046)

GPU Variant

GK104-200-KD-A2

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

6 nm

Process Size

28 nm

5.4 billion

Transistors

3.54 billion

107 mm²

Die Size

294 mm²

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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