AMD Radeon E8870 vs AMD Radeon R9 270 1024SP
GPU Specs Compare
Graphics Card
Release Date
Sep 2015
Mar 2015
Generation
Embedded
Volcanic Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Memory Clock
1500 MHz
1200 MHz
Base Clock
-
900 MHz
Boost Clock
-
925 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
96.00GB/s
153.6GB/s
Render Config
Compute Units
12
16
Shading Units
768
1024
TMUs
48
64
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
16.00 GPixel/s
29.60 GPixel/s
Texture Rate
48.00 GTexel/s
59.20 GTexel/s
FP32 (float)
1.536 TFLOPS
1.894 TFLOPS
FP64 (double)
96.00 GFLOPS
118.4 GFLOPS
Graphics Processor
GPU Name
Saturn
Pitcairn
GPU Variant
Saturn PRO
Pitcairn PRO(215-0828062)
Architecture
GCN 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.08 billion
2.8 billion
Die Size
160 mm²
212 mm²
Board Design
TDP
75W
150W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
-
450 W
Graphics Features
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
1.2
Vulkan
1.2
1.2
Shader Model
6.3
5.1