AMD Radeon HD 6870 X2 vs AMD Radeon HD 6850 1440SP Edition
GPU Specs Compare
Graphics Card
Release Date
Jul 2011
Aug 2012
Generation
Northern Islands
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1050 MHz
1000 MHz
Memory
Memory Size
1024MB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
128.0GB/s
Render Config
Compute Units
14
18
Shading Units
1120
1440
TMUs
56
72
ROPs
32
32
L1 Cache
8 KB (per CU)
8 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
23.20 GPixel/s
Texture Rate
50.40 GTexel/s
52.20 GTexel/s
FP32 (float)
2.016 TFLOPS
2.088 TFLOPS
FP64 (double)
-
417.6 GFLOPS
Graphics Processor
GPU Name
Barts
Cypress
GPU Variant
Barts XT(215-0798000)
Cypress PRO(215-0735043)
Architecture
TeraScale 2
TeraScale 2
Foundry
TSMC
TSMC
Process Size
40 nm
40 nm
Transistors
1.7 billion
2.154 billion
Die Size
255 mm²
334 mm²
Board Design
TDP
300W
151W
Suggested PSU
700 W
450 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
-
2x 6-pin
Graphics Features
DirectX
11.2 (11_0)
11.2 (11_0)
OpenGL
4.4
4.4
OpenCL
1.2
1.2
Vulkan
N/A
N/A
Shader Model
5.0
5.0