AMD Radeon R9 M290X Mac Edition vs AMD Radeon HD 8870 OEM

GPU · Specs Compare

Products
GPU AMD Radeon R9 M290X Mac Edition AMD · 2014-11
GPU AMD Radeon HD 8870 OEM AMD · 2013-01
Graphics Card
Release Date
Nov 2014
Jan 2013
Generation
Crystal System
Sea Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
850 MHz
—
Boost Clock
975 MHz
—
Memory Clock
1365 MHz
1200 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
174.7GB/s
153.6GB/s
Render Config
Compute Units
16
20
Shading Units
1024
1280
TMUs
64
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
31.20 GPixel/s
32.00 GPixel/s
Texture Rate
62.40 GTexel/s
80.00 GTexel/s
FP32 (float)
1.997 TFLOPS
2.560 TFLOPS
FP64 (double)
124.8 GFLOPS
160.0 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Pitcairn
GPU Variant
Pitcairn PRO(215-0828062)
Pitcairn XT(215-0828047)
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
2.8 billion
Die Size
212 mm²
212 mm²
Board Design
TDP
80W
175W
Outputs
No outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
2x 6-pin
Suggested PSU
—
450 W
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2
1.2
Shader Model
5.1
5.1
▲ Specs Compare Data sourced from official specifications and benchmark tests.