Club 3D HD 7990 XT

CGAX-7999XT

Graphics Processor

Malta x2

Cores

2048 x2

TMUs

128 x2

ROPs

32 x2

Memory Size

3 GB x2

Memory Type

GDDR5

Bus Width

384 bit x2

GPU

I/O

Top

Rear

Graphics Processor

GPU Name: Malta

GPU Variant: Malta XT
(215-0849026)

Architecture: GCN 1.0

Foundry: TSMC

Process Size: 28 nm

Transistors: 4,313 million

Density: 11.8M / mm²

Die Size: 365 mm²

Graphics Card

Release Date: Apr 24th, 2013

Generation: Southern Islands
(HD 7900)

Predecessor: Northern Islands

Successor: Sea Islands

Production: End-of-life

Bus Interface: PCIe 3.0 x16

Clock Speeds

Base Clock: 950 MHz

Boost Clock: 1000 MHz

Memory Clock: 1500 MHz
6 Gbps effective

Memory

Memory Size: 3 GB

Memory Type: GDDR5

Memory Bus: 384 bit

Bandwidth: 288.0 GB/s

Render Config

Shading Units: 2048

TMUs: 128

ROPs: 32

Compute Units: 32

L1 Cache: 16 KB (per CU)

L2 Cache: 768 KB

Theoretical Performance

Pixel Rate: 32.00 GPixel/s

Texture Rate: 128.0 GTexel/s

FP32 (float): 4.096 TFLOPS

FP64 (double): 1,024 GFLOPS (1:4)

Board Design

Slot Width: Dual-slot

TDP: 375 W

Suggested PSU: 750 W

Outputs: 1x DVI
4x mini-DisplayPort 1.2

Power Connectors: 2x 8-pin

Board Number: 109-C47637-00A_02

Graphics Features

DirectX: 12 (11_1)

OpenGL: 4.6

OpenCL: 2.1 (1.2)

Vulkan: 1.2.175

Shader Model: 6.5 (5.1)

Card Notes

Reference HD 7990

Malta GPU Notes

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

Exact same as Tahiti, just sorted for low leakage
Exact Transistor Count: 4,312,711,873

Other retail boards based on this design (15)

Name	GPU Clock	Boost Clock	Memory Clock	Other Changes
AMD Radeon HD 7990	950 MHz	1000 MHz	1500 MHz
ASUS HD 7990	950 MHz	1000 MHz	1500 MHz
Club 3D HD 7990 XT	950 MHz	1000 MHz	1500 MHz
ColorFire HD 7990	950 MHz	1000 MHz	1500 MHz
Diamond HD 7990	950 MHz	1000 MHz	1500 MHz
GIGABYTE HD 7990	950 MHz	1000 MHz	1500 MHz
HIS HD 7990 Fan	950 MHz	1000 MHz	1500 MHz
MSI HD 7990	950 MHz	1000 MHz	1500 MHz
PowerColor HD 7990 V2	950 MHz	1000 MHz	1500 MHz
Sapphire HD 7990	950 MHz	1000 MHz	1500 MHz
VisionTek HD 7990	950 MHz	1000 MHz	1500 MHz
VTX3D HD 7990 V2	950 MHz	1000 MHz	1500 MHz
XFX Triple D HD 7990	950 MHz	1000 MHz	1500 MHz
XFX Triple D HD 7990	950 MHz	1000 MHz	1500 MHz	310 mm/12.2 inches, Triple-slot
Zalman HD 7990	950 MHz	1000 MHz	1500 MHz