AMD Radeon Pro W6900X vs NVIDIA GeForce GTX 660 Ti

VS

AMD Radeon Pro W6900X NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 32GB VRAM Radeon Pro W6900X and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro W6900X 's Advantages

Released 9 years late

Boost Clock has increased by 119% (2150MHz vs 980MHz)

More VRAM (32GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 144.2GB/s)

3776 additional rendering cores

NVIDIA GeForce GTX 660 Ti 's Advantages

Lower TDP (150W vs 300W)

Score

Benchmark

FP32 (float)

Radeon Pro W6900X +735%

22.02 TFLOPS

GeForce GTX 660 Ti

2.634 TFLOPS

Blender

Radeon Pro W6900X +1347%

1998

GeForce GTX 660 Ti

138

Radeon Pro W6900X

VS

GeForce GTX 660 Ti

Graphics Card

Aug 2021

Release Date

Aug 2012

Radeon Pro Mac

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

915 MHz

2150 MHz

Boost Clock

980 MHz

2000 MHz

Memory Clock

1502 MHz

Memory

32GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

192bit

512.0GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

80

Compute Units

-

5120

Shading Units

1344

320

TMUs

112

128

ROPs

24

-

Tensor Cores

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

384 KB

Theoretical Performance

275.2 GPixel/s

Pixel Rate

27.44 GPixel/s

688.0 GTexel/s

Texture Rate

109.8 GTexel/s

44.03 TFLOPS

FP16 (half)

-

22.02 TFLOPS

FP32 (float)

2.634 TFLOPS

1376 GFLOPS

FP64 (double)

109.8 GFLOPS

Graphics Processor

Navi 21

GPU Name

GK104

Navi 21 Pro-XTA

GPU Variant

GK104-300-KD-A2

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

3.54 billion

520 mm²

Die Size

294 mm²

Board Design

300W

TDP

150W

700 W

Suggested PSU

450 W

1x HDMI 2.1 4x Thunderbolt

Outputs

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

None

Power Connectors

2x 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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