AMD Radeon HD 6850 1440SP Edition vs AMD Radeon HD 7950 Boost
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Jun 2012
Generation
Northern Islands
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1000 MHz
1250 MHz
Base Clock
—
850 MHz
Boost Clock
—
925 MHz
Memory
Memory Size
1024MB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
128.0GB/s
240.0GB/s
Render Config
Compute Units
18
28
Shading Units
1440
1792
TMUs
72
112
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
768 KB
Theoretical Performance
Pixel Rate
23.20 GPixel/s
29.60 GPixel/s
Texture Rate
52.20 GTexel/s
103.6 GTexel/s
FP32 (float)
2.088 TFLOPS
3.315 TFLOPS
FP64 (double)
417.6 GFLOPS
828.8 GFLOPS
Graphics Processor
GPU Name
Cypress
Tahiti
GPU Variant
Cypress PRO(215-0735043)
Tahiti PRO2(215-0821282)
Architecture
TeraScale 2
GCN 1.0
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
2.154 billion
4.313 billion
Die Size
334 mm²
352 mm²
Board Design
TDP
151W
200W
Suggested PSU
450 W
550 W
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
2x 6-pin
2x 6-pin
Graphics Features
DirectX
11.2 (11_0)
12 (11_1)
OpenGL
4.4
4.6
OpenCL
1.2
1.2
Vulkan
N/A
1.2
Shader Model
5.0
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.