AMD Radeon HD 8970 OEM vs AMD Radeon HD 6850 1440SP Edition
GPU · Specs Compare
Graphics Card
Release Date
Jan 2013
Aug 2012
Generation
Sea Islands
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1375 MHz
1000 MHz
Memory
Memory Size
3GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
264.0GB/s
128.0GB/s
Render Config
Compute Units
32
18
Shading Units
2048
1440
TMUs
128
72
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
29.60 GPixel/s
23.20 GPixel/s
Texture Rate
118.4 GTexel/s
52.20 GTexel/s
FP32 (float)
3.789 TFLOPS
2.088 TFLOPS
FP64 (double)
947.2 GFLOPS
417.6 GFLOPS
Graphics Processor
GPU Name
Tahiti
Cypress
GPU Variant
Tahiti XT(215-0821060)
Cypress PRO(215-0735043)
Architecture
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
4.313 billion
2.154 billion
Die Size
352 mm²
334 mm²
Board Design
TDP
250W
151W
Suggested PSU
600 W
450 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
1x 6-pin + 1x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (11_1)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
1.2
1.2
Vulkan
1.2
N/A
Shader Model
5.1
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.