AMD Radeon HD 8950 OEM vs AMD Radeon HD 8770 OEM
GPU · Specs Compare
Graphics Card
Release Date
Jan 2013
Sep 2013
Generation
Sea Islands
Sea Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
850 MHz
—
Boost Clock
925 MHz
—
Memory Clock
1250 MHz
1500 MHz
Memory
Memory Size
3GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
128bit
Bandwidth
240.0GB/s
96.00GB/s
Render Config
Compute Units
28
14
Shading Units
1792
896
TMUs
112
56
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
256 KB
Theoretical Performance
Pixel Rate
29.60 GPixel/s
16.80 GPixel/s
Texture Rate
103.6 GTexel/s
58.80 GTexel/s
FP32 (float)
3.315 TFLOPS
1.882 TFLOPS
FP64 (double)
828.8 GFLOPS
117.6 GFLOPS
Graphics Processor
GPU Name
Tahiti
Bonaire
GPU Variant
Tahiti PRO(215-0821056)
Bonaire XT(215-0839039)
Architecture
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
2.08 billion
Die Size
352 mm²
160 mm²
Board Design
TDP
200W
85W
Suggested PSU
550 W
250 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
2x 6-pin
1x 6-pin
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.2
1.2
Shader Model
5.1
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.