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ATI Radeon HD 4870
- Graphics Processor
- RV770
- Cores
- 800
- TMUs
- 40
- ROPs
- 16
- Memory Size
- 512 MB
- Memory Type
- GDDR5
- Bus Width
- 256 bit
GPU
PCB Front
PCB Back
Recommended Gaming Resolutions:
- 1280x720
- 1366x768
- 1600x900
The Radeon HD 4870 was a performance-segment graphics card by ATI, launched on June 25th, 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. Since Radeon HD 4870 does not support DirectX 11 or DirectX 12, it might not be able to run all the latest games. 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 paired 512 MB GDDR5 memory with the Radeon HD 4870, 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 (3.6 Gbps effective).
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's dimensions are 241 mm x 111 mm x 40 mm, and it 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's dimensions are 241 mm x 111 mm x 40 mm, and it features a dual-slot cooling solution. Its price at launch was 299 US Dollars.
Graphics Processor
Graphics Card
- Release Date
- Jun 25th, 2008
- Generation
-
Radeon R700
(HD 4800)
- Predecessor
- Radeon R600
- Successor
- Evergreen
- Production
- End-of-life
- Launch Price
- 299 USD
- Bus Interface
- PCIe 2.0 x16
- Reviews
- 135 in our database
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for RTX 3080 and faster.
Clock Speeds
- GPU Clock
- 750 MHz
- Memory Clock
-
900 MHz
3.6 Gbps 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
- L1 Cache
- 16 KB (per CU)
- L2 Cache
- 256 KB
Theoretical Performance
- Pixel Rate
- 12.00 GPixel/s
- Texture Rate
- 30.00 GTexel/s
- FP32 (float)
- 1,200.0 GFLOPS
- FP64 (double)
- 240.0 GFLOPS (1:5)
Board Design
- Slot Width
- Dual-slot
- Length
- 241 mm
9.5 inches
- Width
- 111 mm
4.4 inches
- Height
- 40 mm
1.6 inches
- TDP
- 150 W
- Suggested PSU
- 450 W
- Outputs
- 2x DVI
1x S-Video
- Power Connectors
- 2x 6-pin
- Board Number
- 109-B50731-10
Graphics Features
- DirectX
- 10.1 (10_1)
- OpenGL
- 3.3
- OpenCL
- 1.1
- Vulkan
- N/A
- Shader Model
- 4.1
RV770 GPU Notes
| Mobile Variant: M98 Codename: Wekiva Graphics/Compute: GFX3 Display Core Engine: 3.1 Unified Video Decoder: 2.0 Latest Drivers: Windows XP / 8: Catalyst Software Suite 13.1 / 13.4 Beta Windows Vista / 7: Catalyst Software Suite 13.9 |
Retail boards based on this design (17)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| 815 MHz | 925 MHz | ||
| 815 MHz | 925 MHz | ||
| 770 MHz | 920 MHz | ||
| 780 MHz | 1000 MHz | ||
| 770 MHz | 1000 MHz | 1024 MB | |
| 780 MHz | 1000 MHz | ||
| 775 MHz | 1000 MHz | 2x DVI 1x DisplayPort | |
| 775 MHz | 1000 MHz | 1x DVI 1x HDMI 1x DisplayPort 1x VGA | |
| 800 MHz | 950 MHz | Single-slot | |
| 780 MHz | 1000 MHz | ||
| 780 MHz | 1000 MHz | 1024 MB, 1x DVI 1x HDMI 1x VGA | |
| 750 MHz | 900 MHz | 1024 MB, 1x DVI 1x HDMI 1x VGA | |
| 750 MHz | 900 MHz | 2 GB, 1x DVI 1x HDMI 1x VGA | |
| 750 MHz | 900 MHz | 2x DVI | |
| 750 MHz | 900 MHz | 1024 MB | |
| 775 MHz | 950 MHz | ||
| 775 MHz | 950 MHz | 1024 MB |
Aug 2nd, 2025 12:01 CDT
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