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Radeon HD4890 1GB GDDR5 / AX4890 1GBD5

PowerColor Radeon HD4890 1GB GDDR5 (part number AX4890 1GBD5) is one of a few PowerColor Graphics Processing Units for desktop market. Based on ATI Radeon HD 4890, and The GPU is built on 55 nm manufacturing process, and sports Unified Superscalar Shader architecture. The card's graphics frequency is 850 MHz. It also has 800 stream processors, 40 texture units, and 16 color ROPs. The Radeon HD4890 1GB GDDR5 incorporates 1 GB of GDDR5 memory. Since the memory operates at 975 MHz, and uses 256 bit interface, the effective memory bandwidth is 124.8 GB/s. The GPU supports PCI Express 2.0 interface, and requires 2 slots on the motherboard. Similar to the reference design, this model has the maximum power draw of 190 Watt.

Detailed specifications of the graphics card are available below.

PowerColor Radeon HD4890 1GB GDDR5 GPU specifications

Name / Brand / Architecture

Manufacturer: PowerColor
Model: Radeon HD4890 1GB GDDR5
Part number: AX4890 1GBD5
Based on: ATI Radeon HD 4890 [Compare]
Target market segment: Desktop
Die name: RV790 XT
Architecture: Unified Superscalar Shader Architecture
Fabrication process: 55 nm
Transistors: 959 million
Bus interface: PCI-E 2.0 x 16

Frequency

Graphics clock: 850 MHz

Memory specifications

Memory size: ** MB
Memory type: GDDR5
Memory clock: 975 MHz
Memory clock (effective): 3.9 GHz
Memory interface width: **-bit
Memory bandwidth: 124.8 GB/s

Cores / Texture

Color ROPs: 16
Stream processors: 800
Texture units: 40
Texture fetches / clock cycle: Up to 160
Textures/pixel: Up to 128
RAMDACs: 400 MHz
Decoders: DivX
H.2**
MPEG 1
MPEG-2
VC-1

SLI / Crossfire

Maximum crossfire options: 4-way

Electric characteristics

Maximum power draw: 190 W

Video features

Multi-monitor: Up to 2 displays
Maximum digital resolution: **0 x 1600
Maximum DVI resolution: **0 x 1600
Maximum VGA resolution: 2048 x 1536
Anti-Aliasing technologies: 24 x CFAA
8 x MSAA
Adaptive MSAA & SSAA
HDMI: Yes
HDMI version: 1.3

Performance

Pixel fill rate: 13.6 Gigapixels/s
Texture fill rate: 34 Gigatexels/s
Single presision compute power: 1360 GFLOPS
Double precision compute power: 272 GFLOPS

External connectors

Standard display connectors: 2 x Dual-Link DVI-I
S-Video
Power connectors: 2 x 6-pin
Audio input for HDMI: Yes

Dimensions

Size (length x height): 9.49 inches (241 mm) x 4.376 inches (111 mm)
Width: Dual-Slot

Other features / Support

Other features: ATI/AMD PowerPlay
HDCP
High Dynamic Range (HDR) Support
Open CL support: 1.0
OpenGL support: 3.3
DirectX support: 10.1
Shader model: 4.1
Windows driver support: Windows 7
Windows Vista
Windows XP
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