ATI Radeon HD 4770 vs NVIDIA GeForce GTX 660

VS

ATI Radeon HD 4770

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 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 4770 's Advantages

Lower TDP (80W vs 140W)

NVIDIA GeForce GTX 660 's Advantages

Released 3 years and 5 months late

Boost Clock1032MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (144.2GB/s vs 51.20GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4770

0.96 TFLOPS

GeForce GTX 660 +106%

1.981 TFLOPS

Radeon HD 4770

VS

GeForce GTX 660

Graphics Card

Apr 2009

Release Date

Sep 2012

Radeon R700

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

800 MHz

Memory Clock

1502 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

51.20GB/s

Bandwidth

144.2GB/s

Render Config

8

Compute Units

-

640

Shading Units

960

32

TMUs

80

16

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

384 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

20.64 GPixel/s

24.00 GTexel/s

Texture Rate

82.56 GTexel/s

-

960.0 GFLOPS

FP32 (float)

1.981 TFLOPS

192.0 GFLOPS

FP64 (double)

82.56 GFLOPS

Board Design

80W

TDP

140W

250 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV740

GPU Name

GK106

RV740 XT (215-0727019)

GPU Variant

GK106-400-A1

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.826 billion

Transistors

2.54 billion

137 mm²

Die Size

221 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.1

Shader Model

5.1

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