NVIDIA GeForce GTX 660 Ti vs AMD Radeon RX 6400

VS

NVIDIA GeForce GTX 660 Ti AMD Radeon RX 6400

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 4GB VRAM Radeon RX 6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Ti 's Advantages

Larger VRAM bandwidth (144.2GB/s vs 128.0GB/s)

576 additional rendering cores

AMD Radeon RX 6400 's Advantages

Released 9 years and 5 months late

Boost Clock has increased by 137% (2321MHz vs 980MHz)

More VRAM (4GB vs 2GB)

Lower TDP (53W vs 150W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Ti

2.634 TFLOPS

Radeon RX 6400 +35%

3.565 TFLOPS

3DMark Time Spy

GeForce GTX 660 Ti

1627

Radeon RX 6400 +119%

3579

Blender

GeForce GTX 660 Ti

138

Radeon RX 6400 +135%

325

GeForce GTX 660 Ti

VS

Radeon RX 6400

Graphics Card

Aug 2012

Release Date

Jan 2022

GeForce 600

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x4

Clock Speeds

915 MHz

Base Clock

1923 MHz

980 MHz

Boost Clock

2321 MHz

1502 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

64bit

144.2GB/s

Bandwidth

128.0GB/s

Render Config

-

SM Count

-

Compute Units

12

1344

Shading Units

768

112

TMUs

48

24

ROPs

32

-

Tensor Cores

-

RT Cores

12

16 KB (per SMX)

L1 Cache

128 KB per Array

384 KB

L2 Cache

1024 KB

Theoretical Performance

27.44 GPixel/s

Pixel Rate

74.27 GPixel/s

109.8 GTexel/s

Texture Rate

111.4 GTexel/s

-

FP16 (half)

7.130 TFLOPS

2.634 TFLOPS

FP32 (float)

3.565 TFLOPS

109.8 GFLOPS

FP64 (double)

222.8 GFLOPS

Graphics Processor

GK104

GPU Name

Navi 24

GK104-300-KD-A2

GPU Variant

Navi 24 XL (215-135000046)

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

6 nm

3.54 billion

Transistors

5.4 billion

294 mm²

Die Size

107 mm²

Board Design

150W

TDP

53W

450 W

Suggested PSU

250 W

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

Outputs

1x HDMI 2.1 1x DisplayPort 1.4a

2x 6-pin

Power Connectors

None

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

6.6

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