AMD Radeon HD 7850 vs AMD Radeon R9 M390 Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Mar 2012
May 2015
Generation
Southern Islands
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1200 MHz
1365 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
153.6GB/s
174.7GB/s
Render Config
Compute Units
16
16
Shading Units
1024
1024
TMUs
64
64
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
27.52 GPixel/s
30.66 GPixel/s
Texture Rate
55.04 GTexel/s
61.31 GTexel/s
FP32 (float)
1.761 TFLOPS
1.962 TFLOPS
FP64 (double)
110.1 GFLOPS
122.6 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Pitcairn
GPU Variant
Pitcairn PRO(215-0828062)
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
130W
80W
Suggested PSU
300 W
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Outputs
1x DVI1x HDMI 1.4a2x mini-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
📊 Benchmark
3DMark Time Spy
1,334
-
3DMark Time Spy Extreme
325
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