NVIDIA GeForce GTX 660 vs ATI Radeon HD 4830

VS

NVIDIA GeForce GTX 660

ATI Radeon HD 4830

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 512MB VRAM Radeon HD 4830 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Released 3 years and 11 months late

Boost Clock1032MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (144.2GB/s vs 57.60GB/s)

320 additional rendering cores

ATI Radeon HD 4830 's Advantages

Lower TDP (95W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 +169%

1.981 TFLOPS

Radeon HD 4830

0.736 TFLOPS

GeForce GTX 660

VS

Radeon HD 4830

Graphics Card

Sep 2012

Release Date

Oct 2008

GeForce 600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

57.60GB/s

Render Config

-

Compute Units

8

-

960

Shading Units

640

80

TMUs

32

24

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

9.200 GPixel/s

82.56 GTexel/s

Texture Rate

18.40 GTexel/s

-

1.981 TFLOPS

FP32 (float)

736.0 GFLOPS

82.56 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

140W

TDP

95W

300 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GK106

GPU Name

RV770

GK106-400-A1

GPU Variant

RV770 LE (215-0669075)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.54 billion

Transistors

0.956 billion

221 mm²

Die Size

256 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.1

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