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Radeon HD 6990 4GB GDDR5

Sapphire Radeon HD 6990 4GB GDDR5 is a desktop graphics processing unit, based on AMD Radeon HD 6990. The GPU, produced on 40 nm technology, employs TeraScale 3 Unified Processing architecture. The card has graphics clocked at 830 MHz. Furthermore, it has 3072 stream processors, 192 texture units, together with 64 color ROPs. The Radeon HD 6990 4GB GDDR5 incorporates 4 GB of GDDR5 memory. Because the memory is clocked at 1.25 GHz, and uses 256 bit bus, the effective memory bandwidth is 320 GB/s. The GPU supports PCI Express 2.1 interface, and needs 2 slots on the motherboard. This model has the maximum power draw of 375 Watt. The Sapphire Radeon HD 6990 4GB GDDR5 is compatible with crossfire technology, and will perform far better in games when paired with a similar graphics card.

Please see below for detailed specifications of the graphics card.

Sapphire Radeon HD 6990 4GB GDDR5 GPU specifications

Name / Brand / Architecture

Manufacturer: Sapphire
Model: Radeon HD 6990 4GB GDDR5
Reference card?: Yes
Based on: AMD Radeon HD 6990 [Compare]
Target market segment: Desktop
Die name: Cayman
Architecture: TeraScale 3 Unified Processing Architecture
Fabrication process: 40 nm
Transistors: 2 x 2.** billion
Bus interface: PCI-E 2.1 x 16

Frequency

Graphics clock: 830 MHz
BIOS 2 graphics clock: 880 MHz

Memory specifications

Memory size: 2 x 2 GB
Memory type: GDDR5
Memory clock: 1250 MHz
Memory clock (effective): 5 GHz
Memory interface width: 2 x **-bit
Memory bandwidth: 2 x 160 GB/s

Cores / Texture

Color ROPs: 2 x 32
Z/Stencil ROPs: 2 x 128
Stream processors: 2 x 1536
Texture units: 2 x 96
RAMDACs: 400 MHz
Decoders: Adobe Flash
H.2**
MPEG-2 (SD & HD)
MPEG-4 Part 2 (DivX/Xvid)
MVC
VC-1

SLI / Crossfire

Maximum crossfire options: 2-way

Electric characteristics

Maximum power draw: 375 W (BIOS 1) or 450 W (BIOS 2)

Video features

Multi-monitor: Up to 6 displays
Maximum digital resolution: **0 x 1600
Maximum DVI resolution: **0 x 1600
Maximum VGA resolution: 2048 x 1536
Anti-Aliasing technologies: 24 x MSAA
24 x SSAA
Adaptive AA
EQAA
MLAA
HDMI: Yes
HDMI version: 1.4a

Performance

Pixel fill rate: 2 x 26.56 / 28.16 Gigapixels/s
Texture fill rate: 2 x 79.68 / 84.48 Gigatexels/s
Single presision compute power: 2 x 2549.76 GFLOPS
Double precision compute power: 2 x 637.44 GFLOPS
BIOS 2 single presision compute power: 2 x 2703.36 GFLOPS
BIOS 2 double precision compute power: 2 x 675.84 GFLOPS

External connectors

Standard display connectors: 4 x Mini-DP
Dual-Link DVI-I
Power connectors: 2 x 8-pin
Audio input for HDMI: Yes

Dimensions

Width: Dual-Slot

Other features / Support

Other features: AMD PowerTune
ATI/AMD PowerPlay
Direct Compute 11
HD3D Technology
HDCP
High Dynamic Range (HDR) Support
Open CL support: 1.1
OpenGL support: 4.1
DirectX support: 11.0
Shader model: 5.0
Windows driver support: Windows 7
Windows Vista
Windows XP
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