i3DSpeed, November 2008
ATI RADEON HD 3850 256MB DDR3 (670/1660 MHz)
Andrey Vorobiev; December 10, 2008.
On the example of the reference ATI RADEON HD 3850 256MB DDR3 (670/1660 MHz).
- GPU: RADEON 3850 (RV670)
- 256 MB GDDR3 SDRAM in 8 Samsung chips on the front side; 900 (1800) MHz peak clock rate
- Interface: PCI-Express x16
- GPU (ROPs/Shaders) clock rate: 670/670 MHz (nominal)
- Memory clock rate, physical (effective): 830 (1660) MHz (nominal)
- Bus width: 256-bit
- Vertex processors: -
- Pixel processors: -
- Unified processors: 320
- Texture processors: 16 (BLF/TLF)
- ROPs: 16
- Size: 220x100x15 mm (the latter is max. width)
- PCB color: red
- RAMDACs/TDMS: on the separate NVIO chip
- Outputs: 2 x DVI (Dual-Link/HDMI), TV-out (integrated into GPU)
- VIVO: -
- Multi-GPU: Hardware CrossFire
This card features an audio codec that is output via a DVI-to-HDMI adapter.
This card features an original TV-Out interface, so an adapter is required to output video via S-Video or RCA. Such adapters are usually bundled.
This card requires a DVI-to-D-Sub adapter to be connected to an analog monitor with a D-Sub interface.
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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