AMD Radeon HD 6870 vs ATI Radeon HD 5970
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Nov 2009
Generation
Northern Islands
Evergreen
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
20
Shading Units
1120
1600
TMUs
56
80
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
58.00 GTexel/s
FP32 (float)
2.016 TFLOPS
2.320 TFLOPS
FP64 (double)
—
464.0 GFLOPS
Graphics Processor
GPU Name
Barts
Hemlock
GPU Variant
Barts XT(215-0798000)
Hemlock XT(215-0735075)
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
151W
294W
Suggested PSU
450 W
600 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
2x DVI1x mini-DisplayPort 1.1
Power Connectors
2x 6-pin
1x 6-pin + 1x 8-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
▲ Specs Compare
Data sourced from official specifications and benchmark tests.