ATI Radeon HD 4890
RV790
Graphics Processor
800
Cores
40
TMUs
16
ROPs
1024 MB
Memory Size
GDDR5
Memory Type
256 bit
Bus Width
Recommended Resolutions:
- 640x480
- 1280x720
- 1366x768
- 1600x900
- 1920x1080
- 2560x1440
- 3840x2160
The Radeon HD 4890 was a performance graphics card by ATI, launched in April 2009. Built on the 55 nm process, and based on the RV790 graphics processor, in its RV790 XT variant, the card supports DirectX 10.1. The RV790 graphics processor is an average sized chip with a die area of 282 mm² and 959 million transistors. It features 800 shading units, 40 texture mapping units and 16 ROPs. ATI has placed 1,024 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 850 MHz, memory is running at 975 MHz.
Being a dual-slot card, the ATI Radeon HD 4890 draws power from 2x 6-pin power connectors, with power draw rated at 190 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4890 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 241 mm in length, and features a dual-slot cooling solution. Its price at launch was 249 US Dollars.
Being a dual-slot card, the ATI Radeon HD 4890 draws power from 2x 6-pin power connectors, with power draw rated at 190 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4890 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 241 mm in length, and features a dual-slot cooling solution. Its price at launch was 249 US Dollars.
Graphics Processor
- GPU Name
- RV790
- GPU Variant
-
RV790 XT
(215-0758016)
- Architecture
- TeraScale
- Process Size
- 55 nm
- Transistors
- 959 million
- Die Size
- 282 mm²
Graphics Card
- Release Date
- Apr 2nd, 2009
- Generation
-
Radeon R700
(HD 4800)
- Production
- End-of-life
- Launch Price
- 249 USD
- Bus Interface
- PCIe 2.0 x16
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080
Clock Speeds
- GPU Clock
- 850 MHz
- Memory Clock
-
975 MHz
3900 MHz effective
Memory
- Memory Size
- 1024 MB
- Memory Type
- GDDR5
- Memory Bus
- 256 bit
- Bandwidth
- 124.8 GB/s
Render Config
- Shading Units
- 800
- TMUs
- 40
- ROPs
- 16
- Compute Units
- 10
Theoretical Performance
- Pixel Rate
- 13.60 GPixel/s
- Texture Rate
- 34.00 GTexel/s
- FP32 (float) performance
- 1,360 GFLOPS
- FP64 (double) performance
- 272.0 GFLOPS (1:5)
Board Design
- Slot Width
- Dual-slot
- Length
- 9.49 inches
241 mm
- TDP
- 190 W
- Outputs
- 2x DVI
1x S-Video
- Power Connectors
- 2x 6-pin
- Board Number
- B790
Graphics Features
- DirectX
- 10.1
- OpenGL
- 3.3
- OpenCL
- 1.1
- Vulkan
- N/A
- Shader Model
- 4.1
RV790 GPU Notes
| Graphics/Compute: GFX3 Display Core Engine: 3.1 Unified Video Decoder: 2.0 |
Retail boards based on this design (15)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
ASUS HD 4890 TOP
|
900 MHz | 1000 MHz | |
Diamond HD 4890 XOC
|
925 MHz | 1050 MHz | 9.8 inches/249 mm |
HIS HD 4890 Fan Turbo
|
900 MHz | 1000 MHz | 9.69 inches/246 mm |
HIS HD 4890 Fan Turbo+
|
965 MHz | 1050 MHz | 9.69 inches/246 mm |
MSI HD 4890 Cyclone SOC
|
1000 MHz | 1000 MHz | 1x DVI 1x HDMI 1x VGA |
PowerColor HD 4890 LCS
|
900 MHz | 1000 MHz | |
PowerColor HD 4890 PCS+
|
950 MHz | 975 MHz | |
Sapphire HD 4890
|
850 MHz | 975 MHz | |
Sapphire HD 4890 Atomic
|
1000 MHz | 1050 MHz | |
Sapphire HD 4890 New Edition
|
850 MHz | 975 MHz | 1x DVI 1x HDMI 1x DisplayPort |
Sapphire HD 4890 Toxic
|
960 MHz | 1050 MHz | |
Sapphire HD 4890 Vapor-X OC
|
870 MHz | 1050 MHz | 1x DVI 1x HDMI 1x DisplayPort 1x VGA |
Sapphire HD 4890 Vapor-X OC 2 GB
|
870 MHz | 1050 MHz | 2048 MB, 1x DVI 1x HDMI 1x DisplayPort 1x VGA |
VisionTek HD 4890 OC Edition
|
950 MHz | 1050 MHz | |
XFX HD 4890 Black Edition
|
1000 MHz | 1000 MHz |