ATI Radeon HD 5970 Protoype A1

Graphics Processor

Hemlock x2

Cores

1600 x2

TMUs

80 x2

ROPs

32 x2

Memory Size

1024 MB x2

Memory Type

GDDR5

Bus Width

256 bit x2

GPU

Back

Graphics Processor

GPU Name: Hemlock

GPU Variant: Hemlock XT
(215-0735075)

Architecture: TeraScale 2

Foundry: TSMC

Process Size: 40 nm

Transistors: 2,154 million

Density: 6.4M / mm²

Die Size: 334 mm²

Graphics Card

Release Date: ~~Nov 18th, 2009~~
Jun 14th, 2009

Generation: Evergreen
(HD 5900)

Predecessor: Radeon R700

Successor: Northern Islands

Production: End-of-life

Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 725 MHz

Memory Clock: 1000 MHz
4 Gbps effective

Memory

Memory Size: 1024 MB

Memory Type: GDDR5

Memory Bus: 256 bit

Bandwidth: 128.0 GB/s

Render Config

Shading Units: 1600

TMUs: 80

ROPs: 32

Compute Units: 20

L1 Cache: 8 KB (per CU)

L2 Cache: 512 KB

Theoretical Performance

Pixel Rate: 23.20 GPixel/s

Texture Rate: 58.00 GTexel/s

FP32 (float): 2.320 TFLOPS

FP64 (double): 464.0 GFLOPS (1:5)

Board Design

Slot Width: Dual-slot

Length: 311 mm
12.2 inches

Width: 111 mm
4.4 inches

Height: ~~37 mm~~
40 mm
~~1.5 inches~~
1.6 inches

TDP: 294 W

Suggested PSU: 600 W

Outputs: 2x DVI
1x mini-DisplayPort 1.1

Power Connectors: 1x 6-pin + 1x 8-pin

Board Number: 109-C00037-00

Graphics Features

DirectX: 11.2 (11_0)

OpenGL: 4.4

OpenCL: 1.2

Vulkan: N/A

Shader Model: 5.0

Hemlock GPU Notes

Generation: Evergreen
Desktop Variant: Cypress
Mobile Variant: Lexington
Graphics/Compute: GFX4
Display Core Engine: 4.0
Unified Video Decoder: 2.3

Other retail boards based on this design (10)

Name	GPU Clock	Memory Clock	Other Changes
ASUS ROG ARES	850 MHz	1200 MHz	2 GB, 279 mm/11 inches, 2x DVI 1x HDMI 1x DisplayPort
ATI Radeon HD 5970 Protoype A1	725 MHz	1000 MHz
HIS HD 5970	725 MHz	1000 MHz
PowerColor HD 5970 LCS	750 MHz	1050 MHz
Sapphire HD 5970	725 MHz	1000 MHz
Sapphire HD 5970 4 GB	850 MHz	1200 MHz	2 GB, 310 mm/12.2 inches
Sapphire HD 5970 OC	735 MHz	1010 MHz
Sapphire HD 5970 TOXIC 4 GB	900 MHz	1200 MHz	2 GB, 310 mm/12.2 inches
XFX HD 5970 Black Edition	725 MHz	1000 MHz
XFX HD 5970 Black Edition 4 GB	850 MHz	1200 MHz	2 GB, 6x mini-DisplayPort