On the example of Sapphire RADEON HD 4870 Vapor-X 2048MB DDR5 (750/750/3600 MHz).

Features:

• GPU: RADEON HD 4870 (RV770)
• 2048 MB GDDR5 SDRAM in 16 Qimonda chips on both sides; 1000 (4000) MHz peak clock rate
• Interface: PCI-Express x16
• GPU (ROPs/Shaders) clock rate: 750/750 MHz (nominal)
• Memory clock rate, physical (effective): 900 (3600) MHz (nominal)
• Bus width: 256-bit
• Vertex processors: -
• Pixel processors: -
• Unified processors: 800
• Texture processors: 40 (BLF/TLF)
• ROPs: 16
• Size: 220x100x33 mm (the latter is max. width)
• PCB color: green
• RAMDACs/TDMS: integrated into GPU
• Outputs: DVI (Dual-Link), DisplayPort, HDMI, VGA
• VIVO: -
• Multi-GPU: Hardware CrossFire

The card differs from the reference design by minor changes to the power supply unit and available outputs.

The card has solid-state electrolytic capacitors and Diamond Black chokes with built-in heatsinks called to improve card performance and reliability.

Maximum resolutions and frequencies:

• 240 Hz maximum refresh rate
• 2048 x 1536 x 32bit @ 85Hz Max - analog interface
• 2560 x 1600 @ 60Hz Max - digital interface (all Dual-Link DVIs)

MPEG2 playback (DVD-Video) was analyzed back in 2002 and little has changed since that time. Modern graphics cards do not load CPUs during video playback by more than 25%.

The HDTV review is available here.

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