ATI Radeon HD 4870
RV770
Graphics Processor
800
Cores
40
TMUs
16
ROPs
512 MB
Memory Size
GDDR5
Memory Type
256 bit
Bus Width
Recommended Resolutions:
- 640x480
- 1280x720
- 1366x768
- 1600x900
- 1920x1080
- 2560x1440
- 3840x2160
The Radeon HD 4870 was a performance graphics card by ATI, launched in June 2008. Built on the 55 nm process, and based on the RV770 graphics processor, in its RV770 XT variant, the card supports DirectX 10.1. The RV770 graphics processor is an average sized chip with a die area of 256 mm² and 956 million transistors. It features 800 shading units, 40 texture mapping units and 16 ROPs. ATI has placed 512 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 750 MHz, memory is running at 900 MHz.
Being a dual-slot card, the ATI Radeon HD 4870 draws power from 2x 6-pin power connectors, with power draw rated at 150 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4870 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 250 mm in length, and features a dual-slot cooling solution. Its price at launch was 299 US Dollars.
Being a dual-slot card, the ATI Radeon HD 4870 draws power from 2x 6-pin power connectors, with power draw rated at 150 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 4870 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 250 mm in length, and features a dual-slot cooling solution. Its price at launch was 299 US Dollars.
Graphics Processor
- GPU Name
- RV770
- GPU Variant
-
RV770 XT
(215-0669049)
- Architecture
- TeraScale
- Process Size
- 55 nm
- Transistors
- 956 million
- Die Size
- 256 mm²
Graphics Card
- Release Date
- Jun 25th, 2008
- Generation
-
Radeon R700
(HD 4800)
- Production
- End-of-life
- Launch Price
- 299 USD
- Bus Interface
- PCIe 2.0 x16
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080
Clock Speeds
- GPU Clock
- 750 MHz
- Memory Clock
-
900 MHz
3600 MHz effective
Memory
- Memory Size
- 512 MB
- Memory Type
- GDDR5
- Memory Bus
- 256 bit
- Bandwidth
- 115.2 GB/s
Render Config
- Shading Units
- 800
- TMUs
- 40
- ROPs
- 16
- Compute Units
- 10
Theoretical Performance
- Pixel Rate
- 12.00 GPixel/s
- Texture Rate
- 30.00 GTexel/s
- FP32 (float) performance
- 1,200 GFLOPS
- FP64 (double) performance
- 240.0 GFLOPS (1:5)
Board Design
- Slot Width
- Dual-slot
- Length
- 9.84 inches
250 mm
- TDP
- 150 W
- Outputs
- 2x DVI
1x S-Video
- Power Connectors
- 2x 6-pin
- Board Number
- B507
Graphics Features
- DirectX
- 10.1
- OpenGL
- 3.3
- OpenCL
- 1.1
- Vulkan
- N/A
- Shader Model
- 4.1
RV770 GPU Notes
| Graphics/Compute: GFX3 Display Core Engine: 3.1 Unified Video Decoder: 2.0 |
Retail boards based on this design (17)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
ASUS HD 4870 DK TOP
|
815 MHz | 925 MHz | 9.5 inches/241 mm |
ASUS HD 4870 TOP
|
815 MHz | 925 MHz | 9.5 inches/241 mm |
ASUS ROG Matrix HD 4870
|
770 MHz | 920 MHz | 9.5 inches/241 mm |
HIS HD 4870 IceQ 4+ Turbo
|
780 MHz | 1000 MHz | |
HIS HD 4870 IceQ 4+ Turbo 1 GB
|
770 MHz | 1000 MHz | 1024 MB |
HIS HD 4870 Turbo
|
780 MHz | 1000 MHz | 9.69 inches/246 mm |
Palit HD 4870 Sonic Dual
|
775 MHz | 1000 MHz | 1x DVI 1x HDMI 1x DisplayPort 1x VGA |
Palit HD 4870 Sonic Dual
|
775 MHz | 1000 MHz | 2x DVI 1x DisplayPort |
PowerColor HD 4870 LCS
|
800 MHz | 950 MHz | 9.49 inches/241 mm, Single-slot |
Sapphire HD 4870 Toxic
|
780 MHz | 1000 MHz | |
Sapphire HD 4870 Toxic 1 GB
|
780 MHz | 1000 MHz | 1024 MB, 1x DVI 1x HDMI 1x VGA |
Sapphire HD 4870 Vapor-X 1 GB
|
750 MHz | 900 MHz | 1024 MB, 1x DVI 1x HDMI 1x VGA |
Sapphire HD 4870 Vapor-X 2 GB
|
750 MHz | 900 MHz | 2048 MB, 1x DVI 1x HDMI 1x VGA |
XFX HD 4870
|
750 MHz | 900 MHz | 9.5 inches/241 mm, Single-slot, 2x DVI |
XFX HD 4870 1 GB
|
750 MHz | 900 MHz | 1024 MB |
XFX HD 4870 XXX
|
775 MHz | 950 MHz | |
XFX HD 4870 XXX 1 GB
|
775 MHz | 950 MHz | 1024 MB |