Product Type: Powercolor graphic cards

Description:Model ID LF R77F-TI3A-G / PowerColor HD 4870 Stalker Edition - Graphics adapter - Radeon HD 4870 - PCI Express 2.0 x16 - 1 GB GDDR5 - Digital Visual Interface (DVI), HDMI ( HDCP ) - HDTV out / 956 million transistors on 55nm fabrication process PCI Express 2.0 x16 bus inter ... more

Powercolor HD 4870 Stalker Edition ... interface

256-bit GDDR5

Microsoft DirectX 10.1 support

ShaderModel 4.1

32-bit floating point texture filtering

Indexed cube map arrays

Independent blend modes per render target

Pixel coverage sample masking

Read/write multi-sample surfaces with shaders

Gather4 texture fetching

Unified Superscalar Shader Architecture

800 stream processing units

Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders

Common instruction set and texture unit access supported for all types of shaders

Dedicated branch execution units and texture address processors

128-bit floating point precision for all operations

Command processor for reduced CPU overhead

Shader instruction and constant caches

Up to 160 texture fetches per clock cycle

Up to 128 textures per pixel

Fully associative multi-level texture cache design

DXTC and 3Dc+ texture compression

High resolution texture support (up to 8192 x 8192)

Fully associative texture Z/stencil cache designs

Double-sided hierarchical Z/stencil buffer

Early Z test, Re-Z, Z Range optimization, and Fast Z Clear

Lossless Z & stencil compression (up to 128:1)

Lossless color compression (up to 8:1)

8 render targets (MRTs) with anti-aliasing support

Accelerated physics processing

Dynamic Geometry Acceleration

High performance vertex cache

Programmable tessellation unit

Accelerated geometry shaderpath for geometry amplification

Memory read/write cache for improved stream output performance

Anti-aliasing features

Multi-sample anti-aliasing (2, 4, or 8 samples per pixel)

Up to 24x Custom Filter Anti-Aliasing (CFAA) for improved quality

Adaptive super-sampling and multi-sampling

Gamma correct

Super AA (ATI CrossFireX configurations only)

All anti-aliasing features compatible with HDR renderin

Texture filtering features

2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel)

128-bit floating point HDR texture filtering

sRGB filtering (gamma/degamma)

Percentage Closer Filtering (PCF)

Depth & stencil texture (DST) format support

Shared exponent HDR (RGBE 9:9:9:5) texture format support

OpenGL 2.0 support

ATI CrossFireX Multi-GPU Technology

Scale up rendering performance and image quality with two, three, or four GPUs

Integrated compositing engine

High performance dual channel bridge interconnect

Newest Review: ... can be used instead of a single pci-e connector. The card itself looks good inside the case and has an attractive plastic ... more

 ... cover with a red circuit board and plenty of copper pipes and heat sinks. It is particularly power hungry and requires a 500W PSU according to the specs although I ran it using a 460W PSU without issue. It's always best to go with the recommendation or contact the manufacturer though so please make sure you do this to prevent issues. As for the performance of the card, it is very impressive. The car can be overclocked using ATi Overdrive within Catalyst Control Centre and I had mine running at 800/1100 while playing C...more