ASUS R9 280 DirectCU II TOP

R9280-DC2T-3GD5

Graphics Processor

Tahiti

Cores

1792

TMUs

112

ROPs

Memory Size

3 GB

Memory Type

GDDR5

Bus Width

384 bit

GPU

Graphics Processor

GPU Name: Tahiti

GPU Variant: Tahiti PRO3
(215-0821330)

Architecture: GCN 1.0

Foundry: TSMC

Process Size: 28 nm

Transistors: 4,313 million

Density: 12.3M / mm²

Die Size: 352 mm²

Graphics Card

Release Date: Mar 4th, 2014

Generation: Volcanic Islands
(R9 200)

Predecessor: Sea Islands

Successor: Pirate Islands

Production: End-of-life

Bus Interface: PCIe 3.0 x16

Clock Speeds

Base Clock: ~~827 MHz~~
874 MHz (+6%)

Boost Clock: ~~933 MHz~~
980 MHz (+5%)

Memory Clock: ~~1250 MHz~~
1300 MHz (+4%)
~~5 Gbps effective~~
5.2 Gbps effective

Memory

Memory Size: 3 GB

Memory Type: GDDR5

Memory Bus: 384 bit

Bandwidth: ~~240.0 GB/s~~
249.6 GB/s

Render Config

Shading Units: 1792

TMUs: 112

ROPs: 32

Compute Units: 28

L1 Cache: 16 KB (per CU)

L2 Cache: 768 KB

Theoretical Performance

Pixel Rate: ~~29.86 GPixel/s~~
31.36 GPixel/s

Texture Rate: ~~104.5 GTexel/s~~
109.8 GTexel/s

FP32 (float): ~~3.344 TFLOPS~~
3.512 TFLOPS

FP64 (double): ~~836.0 GFLOPS~~
878.1 GFLOPS (1:4)

Board Design

Slot Width: Dual-slot

Length: ~~275 mm~~
284 mm
~~10.8 inches~~
11.2 inches

TDP: 200 W

Suggested PSU: 550 W

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

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

Board Number: C386

Graphics Features

DirectX: 12 (11_1)

OpenGL: 4.6

OpenCL: 2.1 (1.2)

Vulkan: 1.2.170

Shader Model: 6.5 (5.1)

Card Notes

Rebranded HD 7950

Tahiti GPU Notes

Generation: Southern Islands
Desktop Variant: New Zealand / Malta
Graphics/Compute: GFX6 (gfx600)
Display Core Engine: 6.0
Unified Video Decoder: 3.2
Video Compression Engine: 1.0
CLRX: GCN 1.0

Exact Transistor Count: 4,312,711,873

Other retail boards based on this design (13)

Name	GPU Clock	Boost Clock	Memory Clock	Other Changes
ASUS R9 280 DirectCU II	827 MHz	933 MHz	1250 MHz	284 mm/11.2 inches, 2x DVI 1x HDMI 1x DisplayPort
ASUS R9 280 DirectCU II TOP	874 MHz	980 MHz	1300 MHz	284 mm/11.2 inches, 2x DVI 1x HDMI 1x DisplayPort
ASUS STRIX R9 280 OC	874 MHz	980 MHz	1300 MHz	284 mm/11.2 inches, 2x DVI 1x HDMI 1x DisplayPort
Club 3D R9 280 royalKing	855 MHz	960 MHz	1250 MHz	268 mm/10.6 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
GIGABYTE R9 280 WindForce 3X OC	950 MHz	1072 MHz	1250 MHz	296 mm/11.7 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
HIS R9 280 IceQ OC	827 MHz	933 MHz	1250 MHz	281 mm/11.1 inches, Triple-slot, 1x DVI 1x HDMI 2x mini-DisplayPort
HIS R9 280 IceQ X2 OC	847 MHz	953 MHz	1250 MHz	297 mm/11.7 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
MSI R9 280 Gaming	933 MHz	972 MHz	1250 MHz	269 mm/10.6 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
PowerColor TurboDuo R9 280 OC	855 MHz	960 MHz	1250 MHz	267 mm/10.5 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
Sapphire Dual-X R9 280 OC with Boost	850 MHz	940 MHz	1250 MHz	262 mm/10.3 inches, 2x DVI 1x HDMI 1x DisplayPort
VTX3D R9 280 X-Edition	855 MHz	960 MHz	1250 MHz	1x DVI 1x HDMI 2x mini-DisplayPort
XFX Double D R9 280	827 MHz	933 MHz	1250 MHz	295 mm/11.6 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
XFX Double D R9 280 Black Edition	933 MHz	1000 MHz	1300 MHz	295 mm/11.6 inches, 1x DVI 1x HDMI 2x mini-DisplayPort