AMD Radeon R9 280X vs NVIDIA GeForce GTX 660

VS

AMD Radeon R9 280X

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X 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 R9 280X 's Advantages

Released 1 years and 1 months late

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 144.2GB/s)

1088 additional rendering cores

NVIDIA GeForce GTX 660 's Advantages

Boost Clock has increased by 3% (1032MHz vs 1000MHz)

Lower TDP (140W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 280X +106%

4.096 TFLOPS

GeForce GTX 660

1.981 TFLOPS

3DMark Time Spy

Radeon R9 280X +79%

2348

GeForce GTX 660

1308

Radeon R9 280X

VS

GeForce GTX 660

Graphics Card

Oct 2013

Release Date

Sep 2012

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

850 MHz

Base Clock

980 MHz

1000 MHz

Boost Clock

1032 MHz

1500 MHz

Memory Clock

1502 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

288.0GB/s

Bandwidth

144.2GB/s

Render Config

32

Compute Units

-

2048

Shading Units

960

128

TMUs

80

32

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

384 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

20.64 GPixel/s

128.0 GTexel/s

Texture Rate

82.56 GTexel/s

-

4.096 TFLOPS

FP32 (float)

1.981 TFLOPS

1024 GFLOPS

FP64 (double)

82.56 GFLOPS

Board Design

250W

TDP

140W

600 W

Suggested PSU

300 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 + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

GK106

Tahiti XTL (215-0821065)

GPU Variant

GK106-400-A1

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.54 billion

352 mm²

Die Size

221 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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