ATI Radeon HD 4770 Full Specs

Summary

640 Shaders 750MHz

512MB GDDR551.2GB/s

Peak·FP32·FP16 960 GFLOPS

Form Factor PCIe Card

TDP 80W

Power Connectors 1x 6-Pin

Theoretical Performance

Clock Speed750MHz UC·Boost·OC

Peak OPS 960 GFLOPSFP32

FP32 960 GFLOPS

FP64 192 GFLOPS

Pixel Rate 12 GPixel/s

Texture Rate 24 GTexel/s

Core Config

Shaders 640 Shaders

TMUs 32 TMUs

ROPs 16 ROPs

CUs 8 CUs

Clocks

Boost Clock 750MHz

Cache

L1 16KB/CU

L2 Cache 128KB shared

Memory

512MB GDDR5

Memory Bus 128-bit

Memory Speed 3.2GT/s

Memory Bandwidth 51.2GB/s

ECC No

Power & Thermals

TDP 80W

Video Output

Max Resolution 2560x1600

Refresh Rate Calculator 2560x1440 Resolution1440p QHD Refresh Rate 66Hz

Multi-Monitor 2

DSC Not Supported

Ports

2x DVI-I Dual-Link 1x S-Video

API Support

Shader Model 4.1

DirectX DirectX 10 Direct3D 10_1

OpenGL 3.3 OpenCL 1.1

GFX 3

Decoder

Decoder UVD 2.2

Codec VC-1 AVC (H.264)

Card

Form Factor PCIe Card

PCIe PCIe 2.0 x16 1-Slots

Cooling Blower 1x Fan

Power Connectors 1x 6-Pin

Multi-GPU Multi-GPU Support Supported Multi-GPU Type 2-way CrossFireX

Chip

Manufacturer ATI

Chip Designer ATI

Architecture TeraScale 1

Family Radeon HD 4000

Branding

Codename Walden

Chip Variant RV740

Market Segment Desktop

Release Date Apr 28, 2009

Fabrication

Foundry TSMC

Fabrication Node 40nm

Die Size 137mm²

Transistor Count 826M

Transistor Density 6.03 MTr/mm²

Images