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ATI Radeon HD 3870 X2
- Graphics Processor
- R680 x2
- Cores
- 320 x2
- TMUs
- 16 x2
- ROPs
- 16 x2
- Memory Size
- 512 MB x2
- Memory Type
- GDDR3
- Bus Width
- 256 bit x2
GPU
I/O
PCB Front
PCB Back
Recommended Gaming Resolutions:
- 1366x768
- 1600x900
- 1920x1080
The Radeon HD 3870 X2 was a high-end graphics card by ATI, launched on January 26th, 2008. Built on the 55 nm process, and based on the R680 graphics processor, in its R680 XT variant, the card supports DirectX 10.1. Since Radeon HD 3870 X2 does not support DirectX 11 or DirectX 12, it might not be able to run all the latest games. The R680 graphics processor is an average sized chip with a die area of 192 mm² and 666 million transistors. Radeon HD 3870 X2 combines two graphics processors to increase performance. It features 320 shading units, 16 texture mapping units, and 16 ROPs, per GPU. ATI has paired 1,024 MB GDDR3 memory with the Radeon HD 3870 X2, which are connected using a 256-bit memory interface per GPU (each GPU manages 512 MB). The GPU is operating at a frequency of 825 MHz, memory is running at 901 MHz.
Being a dual-slot card, the ATI Radeon HD 3870 X2 draws power from 1x 6-pin + 1x 8-pin power connector, with power draw rated at 165 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 3870 X2 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card's dimensions are 267 mm x 113 mm x 39 mm, and it features a dual-slot cooling solution. Its price at launch was 449 US Dollars.
Being a dual-slot card, the ATI Radeon HD 3870 X2 draws power from 1x 6-pin + 1x 8-pin power connector, with power draw rated at 165 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 3870 X2 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card's dimensions are 267 mm x 113 mm x 39 mm, and it features a dual-slot cooling solution. Its price at launch was 449 US Dollars.
Graphics Processor
Graphics Card
- Release Date
- Jan 26th, 2008
- Generation
-
Radeon R600
(HD 3800)
- Predecessor
- Radeon R500 PCIe
- Successor
- Radeon R700
- Production
- End-of-life
- Launch Price
- 449 USD
- Bus Interface
- PCIe 2.0 x16
- Reviews
- 72 in our database
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.
Clock Speeds
- GPU Clock
- 825 MHz
- Memory Clock
-
901 MHz
1802 Mbps effective
Memory
- Memory Size
- 512 MB
- Memory Type
- GDDR3
- Memory Bus
- 256 bit
- Bandwidth
- 57.66 GB/s
Render Config
- Shading Units
- 320
- TMUs
- 16
- ROPs
- 16
- Compute Units
- 4
- L2 Cache
- 256 KB
Theoretical Performance
- Pixel Rate
- 13.20 GPixel/s
- Texture Rate
- 13.20 GTexel/s
- FP32 (float)
- 528.0 GFLOPS
- FP64 (double)
- 105.6 GFLOPS (1:5)
Board Design
- Slot Width
- Dual-slot
- Length
- 267 mm
10.5 inches
- Width
- 113 mm
4.4 inches
- Height
- 39 mm
1.5 inches
- TDP
- 165 W
- Suggested PSU
- 450 W
- Outputs
- 2x DVI
1x S-Video
- Power Connectors
- 1x 6-pin + 1x 8-pin
- Board Number
- 109-B40031-10
Graphics Features
- DirectX
- 10.1 (10_1)
- OpenGL
-
3.3 (full)
4.0 (partial)
- OpenCL
- N/A
- Vulkan
- N/A
- Shader Model
- 4.1
R680 GPU Notes
| Graphics/Compute: GFX3 Display Core Engine: 2.0 Unified Video Decoder: 1.0 OpenGL 4.0: 23% Support OpenGL 4.1: 71% Support OpenGL 4.2: 16% Support |
Retail boards based on this design (3)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| 851 MHz | 954 MHz | 4x DVI 1x S-Video | |
| 825 MHz | 1125 MHz | GDDR4, 3x DVI 1x HDMI 1x S-Video | |
| 860 MHz | 931 MHz | Single-slot |
Apr 24th, 2024 13:06 EDT
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