AMD Radeon RX 6700 XT vs NVIDIA GeForce GTX 660

VS

AMD Radeon RX 6700 XT NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 XT and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6700 XT 's Advantages

Released 8 years and 6 months late

Boost Clock has increased by 150% (2581MHz vs 1032MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 144.2GB/s)

1600 additional rendering cores

NVIDIA GeForce GTX 660 's Advantages

Lower TDP (140W vs 230W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 XT +566%

13.21 TFLOPS

GeForce GTX 660

1.981 TFLOPS

3DMark Time Spy

Radeon RX 6700 XT +877%

12772

GeForce GTX 660

1307

Blender

Radeon RX 6700 XT +1224%

1642

GeForce GTX 660

124

Radeon RX 6700 XT

VS

GeForce GTX 660

Graphics Card

Mar 2021

Release Date

Sep 2012

Navi II

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2321 MHz

Base Clock

980 MHz

2581 MHz

Boost Clock

1032 MHz

2000 MHz

Memory Clock

1502 MHz

Memory

12GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

192bit

384.0GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

40

Compute Units

-

2560

Shading Units

960

160

TMUs

80

64

ROPs

24

-

Tensor Cores

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

3 MB

L2 Cache

384 KB

Theoretical Performance

165.2 GPixel/s

Pixel Rate

20.64 GPixel/s

413.0 GTexel/s

Texture Rate

82.56 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

1.981 TFLOPS

825.9 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

Navi 22

GPU Name

GK106

Navi 22 XT (215-127000006)

GPU Variant

GK106-400-A1

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

2.54 billion

335 mm²

Die Size

221 mm²

Board Design

230W

TDP

140W

550 W

Suggested PSU

300 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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