AMD Radeon HD 6870 vs AMD Radeon R9 M290X
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Jan 2014
Generation
Northern Islands
Gem System
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1200 MHz
Base Clock
—
850 MHz
Boost Clock
—
900 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
153.6GB/s
Render Config
Compute Units
14
20
Shading Units
1120
1280
TMUs
56
80
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
28.80 GPixel/s
Texture Rate
50.40 GTexel/s
72.00 GTexel/s
FP32 (float)
2.016 TFLOPS
2.304 TFLOPS
FP64 (double)
—
144.0 GFLOPS
Graphics Processor
GPU Name
Barts
Neptune
GPU Variant
Barts XT(215-0798000)
Neptune XT(216-0847000)
Architecture
TeraScale 2
GCN 1.0
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
2.8 billion
Die Size
255 mm²
212 mm²
Board Design
TDP
151W
100W
Suggested PSU
450 W
—
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Portable Device Dependent
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
11.2 (11_0)
12 (11_1)
OpenGL
4.4
4.6
OpenCL
1.2
2.1 (1.2)
Vulkan
N/A
1.2.170
Shader Model
5.0
6.5 (5.1)
▲ Specs Compare
Data sourced from official specifications and benchmark tests.