AMD Radeon R7 265X OEM vs AMD Radeon R9 M390 Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Aug 2014
May 2015
Generation
Volcanic Islands
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
900 MHz
—
Boost Clock
925 MHz
—
Memory Clock
1400 MHz
1365 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
179.2GB/s
174.7GB/s
Render Config
Compute Units
20
16
Shading Units
1280
1024
TMUs
80
64
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
29.60 GPixel/s
30.66 GPixel/s
Texture Rate
74.00 GTexel/s
61.31 GTexel/s
FP32 (float)
2.368 TFLOPS
1.962 TFLOPS
FP64 (double)
148.0 GFLOPS
122.6 GFLOPS
Graphics Processor
GPU Name
Curacao
Pitcairn
GPU Variant
Curacao PRO(215-0848000)
Pitcairn PRO(215-0828062)
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
150W
80W
Suggested PSU
450 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
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.