AMD Radeon R9 280X2 vs AMD Radeon HD 6870
GPU · Specs Compare
Graphics Card
Release Date
Unknown
Oct 2010
Generation
Volcanic Islands
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
950 MHz
—
Boost Clock
1000 MHz
—
Memory Clock
1500 MHz
1050 MHz
Memory
Memory Size
3GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
288.0GB/s
134.4GB/s
Render Config
Compute Units
32
14
Shading Units
2048
1120
TMUs
128
56
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
768 KB
512 KB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
28.80 GPixel/s
Texture Rate
128.0 GTexel/s
50.40 GTexel/s
FP32 (float)
4.096 TFLOPS
2.016 TFLOPS
FP64 (double)
1024 GFLOPS
—
Graphics Processor
GPU Name
Tahiti
Barts
GPU Variant
Tahiti XTL(215-0821065)
Barts XT(215-0798000)
Architecture
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
4.313 billion
1.7 billion
Die Size
352 mm²
255 mm²
Board Design
TDP
375W
151W
Suggested PSU
750 W
450 W
Outputs
6x mini-DisplayPort 1.2
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Power Connectors
3x 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.