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

VS

NVIDIA GeForce GTX 660 Ti

AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti 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 Ti 's Advantages

Boost Clock980MHz

64 additional rendering cores

Lower TDP (150W vs 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 144.2GB/s)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Ti +2%

2.634 TFLOPS

Radeon HD 7870 GHz Edition

2.56 TFLOPS

GeForce GTX 660 Ti

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

915 MHz

Base Clock

-

980 MHz

Boost Clock

-

1502 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

153.6GB/s

Render Config

-

Compute Units

20

-

1344

Shading Units

1280

112

TMUs

80

24

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

27.44 GPixel/s

Pixel Rate

32.00 GPixel/s

109.8 GTexel/s

Texture Rate

80.00 GTexel/s

-

2.634 TFLOPS

FP32 (float)

2.560 TFLOPS

109.8 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

150W

TDP

175W

450 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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

GK104

GPU Name

Pitcairn

GK104-300-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

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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