ATI Radeon HD 5870 Mac Edition vs NVIDIA GeForce GTX 660 Ti

VS

ATI Radeon HD 5870 Mac Edition

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5870 Mac Edition and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5870 Mac Edition 's Advantages

Larger VRAM bandwidth (153.0GB/s vs 144.2GB/s)

256 additional rendering cores

NVIDIA GeForce GTX 660 Ti 's Advantages

Released 2 years and 2 months late

Boost Clock980MHz

More VRAM (2GB vs 1024GB)

Lower TDP (150W vs 228W)

Score

Benchmark

FP32 (float)

Radeon HD 5870 Mac Edition +3%

2.72 TFLOPS

GeForce GTX 660 Ti

2.634 TFLOPS

Radeon HD 5870 Mac Edition

VS

GeForce GTX 660 Ti

Graphics Card

Jun 2010

Release Date

Aug 2012

Evergreen

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

915 MHz

-

Boost Clock

980 MHz

1195 MHz

Memory Clock

1502 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

153.0GB/s

Bandwidth

144.2GB/s

Render Config

20

Compute Units

-

1600

Shading Units

1344

80

TMUs

112

32

ROPs

24

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

27.44 GPixel/s

68.00 GTexel/s

Texture Rate

109.8 GTexel/s

-

2.720 TFLOPS

FP32 (float)

2.634 TFLOPS

544.0 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

228W

TDP

150W

550 W

Suggested PSU

450 W

1x DVI 2x mini-DisplayPort 1.1

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Cypress

GPU Name

GK104

Cypress XT (215-0735033)

GPU Variant

GK104-300-KD-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.154 billion

Transistors

3.54 billion

334 mm²

Die Size

294 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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