AMD Radeon HD 7870 GHz Edition vs ATI Radeon HD 5870 Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Mar 2012
Jun 2010
Generation
Southern Islands
Evergreen
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1200 MHz
1195 MHz
Memory
Memory Size
2GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
153.6GB/s
153.0GB/s
Render Config
Compute Units
20
20
Shading Units
1280
1600
TMUs
80
80
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
27.20 GPixel/s
Texture Rate
80.00 GTexel/s
68.00 GTexel/s
FP32 (float)
2.560 TFLOPS
2.720 TFLOPS
FP64 (double)
160.0 GFLOPS
544.0 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Cypress
GPU Variant
Pitcairn XT(215-0828047)
Cypress XT(215-0735033)
Architecture
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
2.8 billion
2.154 billion
Die Size
212 mm²
334 mm²
Board Design
TDP
175W
228W
Suggested PSU
450 W
550 W
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI2x mini-DisplayPort 1.1
Power Connectors
2x 6-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