Dell HD 7470

321-0123

R8TWN

Graphics Processor

Caicos

Cores

160

TMUs

ROPs

Memory Size

1024 MB

Memory Type

GDDR3

Bus Width

64 bit

GPU

Graphics Processor

GPU Name: Caicos

GPU Variant: Khalidster

Architecture: TeraScale 2

Foundry: TSMC

Process Size: 40 nm

Transistors: 370 million

Density: 5.5M / mm²

Die Size: 67 mm²

Chip Package: FCBGA-631

Graphics Card

Release Date: ~~Jan 5th, 2012~~
Apr 8th, 2012

Generation: Southern Islands
(HD 7400)

Predecessor: Northern Islands

Successor: Sea Islands

Production: End-of-life

Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: ~~750 MHz~~
775 MHz (+3%)

Memory Clock: 900 MHz
~~3.6 Gbps effective~~
1800 Mbps effective

Memory

Memory Size: 1024 MB

Memory Type: ~~GDDR5~~
GDDR3

Memory Bus: 64 bit

Bandwidth: ~~28.80 GB/s~~
14.40 GB/s

Render Config

Shading Units: 160

TMUs: 8

ROPs: 4

Compute Units: 2

L1 Cache: 8 KB (per CU)

L2 Cache: 128 KB

Theoretical Performance

Pixel Rate: ~~3.000 GPixel/s~~
3.100 GPixel/s

Texture Rate: ~~6.000 GTexel/s~~
6.200 GTexel/s

FP32 (float): ~~240.0 GFLOPS~~
248.0 GFLOPS

Board Design

Slot Width: Single-slot

TDP: 27 W

Suggested PSU: 200 W

Outputs: 1x DVI
1x DisplayPort 1.1

Power Connectors: None

Board Number: C264

Graphics Features

DirectX: 11.2 (11_0)

OpenGL: 4.4

OpenCL: 1.2

Vulkan: N/A

Shader Model: 5.0

Card Notes

Rebranded HD 6450 GDDR5

Caicos GPU Notes

Generation: Northern Islands
Mobile Variant: Seymour
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Latest Drivers:
Windows XP / 8:
Catalyst Software Suite 14.4

Windows Vista :
Catalyst Software Suite 13.12

Windows 7 / 8.1 / 10:
Catalyst Software Suite 15.7.1 / 16.2.1 Beta

Other retail boards based on this design (3)

Name	GPU Clock	Memory Clock	Other Changes
Dell HD 7470	775 MHz	900 MHz	GDDR3, 1x DVI 1x DisplayPort
Dell HD 7470	775 MHz	900 MHz	GDDR3, 1x DVI 1x DisplayPort
Sapphire HD 7470 2 GB	775 MHz	800 MHz	2 GB, GDDR3