Overclocked HD4870 with some tweaking and faster clocked GPU and memory chips. First card with stock clocked 1GHz GPU(only some models).
Zaatharen's card:
Sapphire Radeon HD4890 1GB - reference card with modded BIOS, GPU runs on 925MHz and memory chips on 4000MHz.
Sapphire Vapor-X HD4890 1GB - later version with VGA, DVI, DP and HDMI, clocks are 870MHz for GPU and 4200MHz for memory.
ATI PowerPlay (BIOS) - Vapor-X card
State #1 GPU: 870 MHz, Memory: 1050 MHz (Boot)
State #2 GPU: 870 MHz, Memory: 1050 MHz
State #3 GPU: 500 MHz, Memory: 1050 MHz (UVD)
State #4 GPU: 870 MHz, Memory: 1050 MHz
State #5 GPU: 240 MHz, Memory: 1050 MHz
ATi RV790 XT GPU
ATi RV790 XT GPU
Sapphire Radeon HD4890 1GB
Sapphire Radeon HD4890 1GB
Sapphire Radeon HD4890 1GB
Sapphire Vapor-X HD4890 1GB
Sapphire Vapor-X HD4890 1GB
Sapphire Vapor-X HD4890 1GB
Sapphire Vapor-X HD4890 1GB
GPU-Z
Vapor-X GPU-ZAdditional Info
- Made by: ATI
- Codename: RV790
- Bus: PCI-E 2 x16
- Memory Size: 1GB
- Max Memory Size: 2GB
- Memory Type: GDDR5
- Year: 2009
- Announce Date: Wednesday, 01 April 2009
- Card Type: VGA
- Family: Radeon HD4x
- Manufacturer: TSMC
- Process tech: 55nm
- Transistors (Millions): 959
- Made in: Taiwan
- Owned by: Zaatharen
- Outputs: 15 pin D‐sub, DVI, DVI-D, HDMI, DisplayPort
- Power consumption (W): 190
- Price $: 249
- Video Acceleration: MPEG-4 AVC (H.264)
- DirectX: DX10.1
- OpenGL: 3.3
- Core Clock (MHz): 850
- Core: 256bit
- Effective Memory Clock (MHz): 3900
- Memory Bus Width: 256bit
- Memory Bandwidth (MB/s): 125000
- Texture Units: 40
- ROPs: 16
- Unified Shaders: 800
- Shader Model: 4.1 (DX10.1)
- Pixel Fillrate (MPixel/s): 13600
- Texel Fillrate (MTexel/s): 34000
- Shaders power (GFlops): 1360
- Sold by: Sapphire
- Max Core Clock (MHz): 1000
- Min Core Clock (MHz): 850
- Max Memory Clock (MHz): 4400
- Min Memory Clock (MHz): 3900
- Ramdac (MHz): 400
- Press info: Freelibrary
- Techdemo: Youtube
- Review: AnandTech
- Review: Tom's Hardware
- Review: Guru3D
- Info: GPU-Z
Published in
ATI Technologies Inc.
Download attachments:
- Reference HD4890 BIOS (15281 Downloads)
- Radeon R6xx/R7xx Acceleration (13732 Downloads)
- 3D Register Reference Guide (13275 Downloads)