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AMD Radeon HD 6850 X2
- Graphics Processor
- Barts x2
- Cores
- 960 x2
- TMUs
- 48 x2
- ROPs
- 32 x2
- Memory Size
- 2 GB x2
- Memory Type
- GDDR5
- Bus Width
- 256 bit x2
GPU
Recommended Gaming Resolutions:
- 1600x900
- 1920x1080
- 2560x1440
The Radeon HD 6850 X2 was a graphics card by AMD, launched on September 19th, 2011. Built on the 40 nm process, and based on the Barts graphics processor, in its Barts PRO variant, the card supports DirectX 11.2. The Barts graphics processor is an average sized chip with a die area of 255 mm² and 1,700 million transistors. Unlike the fully unlocked Radeon HD 6870, which uses the same GPU but has all 1120 shaders enabled, AMD has disabled some shading units on the Radeon HD 6850 X2 to reach the product's target shader count. Radeon HD 6850 X2 combines two graphics processors to increase performance. It features 960 shading units, 48 texture mapping units, and 32 ROPs, per GPU. AMD has paired 4 GB GDDR5 memory with the Radeon HD 6850 X2, which are connected using a 256-bit memory interface per GPU (each GPU manages 2,048 MB). The GPU is operating at a frequency of 800 MHz, memory is running at 1050 MHz (4.2 Gbps effective).
Being a dual-slot card, the AMD Radeon HD 6850 X2 draws power from 2x 8-pin power connectors, with power draw rated at 254 W maximum. Display outputs include: 2x DVI, 1x HDMI 1.3a, 1x DisplayPort 1.1. Radeon HD 6850 X2 is connected to the rest of the system using a PCI-Express 2.0 x16 interface.
Being a dual-slot card, the AMD Radeon HD 6850 X2 draws power from 2x 8-pin power connectors, with power draw rated at 254 W maximum. Display outputs include: 2x DVI, 1x HDMI 1.3a, 1x DisplayPort 1.1. Radeon HD 6850 X2 is connected to the rest of the system using a PCI-Express 2.0 x16 interface.
Graphics Processor
- GPU Name
- Barts
- GPU Variant
-
Barts PRO
(215-0798006)
- Architecture
- TeraScale 2
- Foundry
- TSMC
- Process Size
- 40 nm
- Transistors
- 1,700 million
- Density
- 6.7M / mm²
- Die Size
- 255 mm²
- Chip Package
- HFCBGA-1737
Graphics Card
- Release Date
- Sep 19th, 2011
- Generation
-
Northern Islands
(HD 6800)
- Predecessor
- Evergreen
- Successor
- Southern Islands
- Production
- End-of-life
- Bus Interface
- PCIe 2.0 x16
- Reviews
- 105 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
- 800 MHz
- Memory Clock
-
1050 MHz
4.2 Gbps effective
Memory
- Memory Size
- 2 GB
- Memory Type
- GDDR5
- Memory Bus
- 256 bit
- Bandwidth
- 134.4 GB/s
Render Config
- Shading Units
- 960
- TMUs
- 48
- ROPs
- 32
- Compute Units
- 12
- L1 Cache
- 8 KB (per CU)
- L2 Cache
- 512 KB
Theoretical Performance
- Pixel Rate
- 25.60 GPixel/s
- Texture Rate
- 38.40 GTexel/s
- FP32 (float)
- 1.536 TFLOPS
Board Design
- Slot Width
- Dual-slot
- TDP
- 254 W
- Suggested PSU
- 600 W
- Outputs
- 2x DVI
1x HDMI 1.3a
1x DisplayPort 1.1
- Power Connectors
- 2x 8-pin
Graphics Features
- DirectX
- 11.2 (11_0)
- OpenGL
- 4.4
- OpenCL
- 1.2
- Vulkan
- N/A
- Shader Model
- 5.0
Barts GPU Notes
| Generation: Northern Islands Mobile Variant: Blackcomb Codename: Victoria Graphics/Compute: GFX4 Display Core Engine: 5.0 Unified Video Decoder: 3.1 |
Retail boards based on this design (1)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| 800 MHz | 1050 MHz |
Apr 26th, 2024 12:14 EDT
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