NVIDIA GeForce GTX 660 OEM vs AMD Radeon HD 7870 GHz Edition

VS

NVIDIA GeForce GTX 660 OEM AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 2GB VRAM Radeon HD 7870 GHz Edition 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 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (153.6GB/s vs 134.4GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon HD 7870 GHz Edition +25%

2.56 TFLOPS

GeForce GTX 660 OEM

VS

Radeon HD 7870 GHz Edition

Graphics Card

Aug 2012

Release Date

Mar 2012

GeForce 600

Generation

Southern 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

1200 MHz

Memory

1536MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

134.4GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

Compute Units

20

1152

Shading Units

1280

96

TMUs

80

24

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

Theoretical Performance

21.31 GPixel/s

Pixel Rate

32.00 GPixel/s

85.25 GTexel/s

Texture Rate

80.00 GTexel/s

-

FP16 (half)

-

2.046 TFLOPS

FP32 (float)

2.560 TFLOPS

85.25 GFLOPS

FP64 (double)

160.0 GFLOPS

Graphics Processor

GK104

GPU Name

Pitcairn

GK104-200-KD-A2

GPU Variant

Pitcairn XT (215-0828047)

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

2.8 billion

294 mm²

Die Size

212 mm²

Board Design

130W

TDP

175W

300 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin

Power Connectors

2x 6-pin

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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