NVIDIA GeForce GTX 660 OEM vs AMD Radeon Pro W6900X

VS

NVIDIA GeForce GTX 660 OEM AMD Radeon Pro W6900X

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 32GB VRAM Radeon Pro W6900X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Lower TDP (130W vs 300W)

AMD Radeon Pro W6900X 's Advantages

Released 9 years late

Boost Clock has increased by 142% (2150MHz vs 888MHz)

More VRAM (32GB vs 1GB)

Larger VRAM bandwidth (512.0GB/s vs 134.4GB/s)

3968 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon Pro W6900X +976%

22.02 TFLOPS

GeForce GTX 660 OEM

VS

Radeon Pro W6900X

Graphics Card

Aug 2012

Release Date

Aug 2021

GeForce 600

Generation

Radeon Pro Mac

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

823 MHz

Base Clock

1825 MHz

888 MHz

Boost Clock

2150 MHz

1400 MHz

Memory Clock

2000 MHz

Memory

1536MB

Memory Size

32GB

GDDR5

Memory Type

GDDR6

192bit

Memory Bus

256bit

134.4GB/s

Bandwidth

512.0GB/s

Render Config

-

SM Count

-

Compute Units

80

1152

Shading Units

5120

96

TMUs

320

24

ROPs

128

-

Tensor Cores

-

RT Cores

80

16 KB (per SMX)

L1 Cache

128 KB per Array

384 KB

L2 Cache

4 MB

Theoretical Performance

21.31 GPixel/s

Pixel Rate

275.2 GPixel/s

85.25 GTexel/s

Texture Rate

688.0 GTexel/s

-

FP16 (half)

44.03 TFLOPS

2.046 TFLOPS

FP32 (float)

22.02 TFLOPS

85.25 GFLOPS

FP64 (double)

1376 GFLOPS

Graphics Processor

GK104

GPU Name

Navi 21

GK104-200-KD-A2

GPU Variant

Navi 21 Pro-XTA

Kepler

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

3.54 billion

Transistors

26.8 billion

294 mm²

Die Size

520 mm²

Board Design

130W

TDP

300W

300 W

Suggested PSU

700 W

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

Outputs

1x HDMI 2.1 4x Thunderbolt

1x 6-pin

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.3

3.0

CUDA

-

5.1

Shader Model

6.5

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