AMD Radeon R9 M385X vs AMD Radeon HD 6850 X2
GPU · Specs Compare
Graphics Card
Release Date
May 2015
Sep 2011
Generation
Gem System
Northern Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
1000 MHz
—
Boost Clock
1100 MHz
—
Memory Clock
1200 MHz
1050 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
76.80GB/s
134.4GB/s
Render Config
Compute Units
14
12
Shading Units
896
960
TMUs
56
48
ROPs
16
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
17.60 GPixel/s
25.60 GPixel/s
Texture Rate
61.60 GTexel/s
38.40 GTexel/s
FP32 (float)
1.971 TFLOPS
1.536 TFLOPS
FP64 (double)
123.2 GFLOPS
—
Graphics Processor
GPU Name
Strato
Barts
GPU Variant
Strato XT
Barts PRO(215-0798006)
Architecture
GCN 2.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
2.08 billion
1.7 billion
Die Size
160 mm²
255 mm²
Board Design
TDP
Unknown
254W
Outputs
Portable Device Dependent
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Suggested PSU
—
600 W
Power Connectors
—
2x 8-pin
Graphics Features
DirectX
12 (12_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.1
1.2
Vulkan
1.2.170
N/A
Shader Model
6.5
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.