ATI Radeon HD 5870 vs NVIDIA GeForce GTX 660

VS

ATI Radeon HD 5870 NVIDIA GeForce GTX 660

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

Main Differences

ATI Radeon HD 5870 's Advantages

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

640 additional rendering cores

NVIDIA GeForce GTX 660 's Advantages

Released 3 years late

Boost Clock1032MHz

More VRAM (2GB vs 1GB)

Lower TDP (140W vs 188W)

Score

Benchmark

FP32 (float)

Radeon HD 5870 +37%

2.72 TFLOPS

GeForce GTX 660

1.981 TFLOPS

Radeon HD 5870

VS

GeForce GTX 660

Graphics Card

Sep 2009

Release Date

Sep 2012

Evergreen

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

980 MHz

-

Boost Clock

1032 MHz

1200 MHz

Memory Clock

1502 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

153.6GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

20

Compute Units

-

1600

Shading Units

960

80

TMUs

80

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

Theoretical Performance

27.20 GPixel/s

Pixel Rate

20.64 GPixel/s

68.00 GTexel/s

Texture Rate

82.56 GTexel/s

-

FP16 (half)

-

2.720 TFLOPS

FP32 (float)

1.981 TFLOPS

544.0 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

Cypress

GPU Name

GK106

Cypress XT (215-0735033)

GPU Variant

GK106-400-A1

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.154 billion

Transistors

2.54 billion

334 mm²

Die Size

221 mm²

Board Design

188W

TDP

140W

450 W

Suggested PSU

300 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

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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