NVIDIA GeForce GTX 660 OEM vs AMD Radeon R9 285X

VS

NVIDIA GeForce GTX 660 OEM

AMD Radeon R9 285X

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Boost Clock888MHz

Lower TDP (130W vs 200W)

AMD Radeon R9 285X 's Advantages

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (264.0GB/s vs 134.4GB/s)

896 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon R9 285X +100%

4.104 TFLOPS

GeForce GTX 660 OEM

VS

Radeon R9 285X

Graphics Card

Aug 2012

Release Date

Unknown

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

823 MHz

Base Clock

-

888 MHz

Boost Clock

-

1400 MHz

Memory Clock

1375 MHz

Memory

1536MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

134.4GB/s

Bandwidth

264.0GB/s

Render Config

-

Compute Units

32

-

1152

Shading Units

2048

96

TMUs

128

24

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

768 KB

-

Theoretical Performance

21.31 GPixel/s

Pixel Rate

32.06 GPixel/s

85.25 GTexel/s

Texture Rate

128.3 GTexel/s

-

2.046 TFLOPS

FP32 (float)

4.104 TFLOPS

85.25 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

200W

300 W

Suggested PSU

550 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK104

GPU Name

Tonga

GK104-200-KD-A2

GPU Variant

Tonga XT (215-0851313)

Kepler

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

5 billion

294 mm²

Die Size

366 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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