AMD Radeon HD 7850 vs AMD Radeon E8870
GPU Specs Compare
Graphics Card
Release Date
Mar 2012
Sep 2015
Generation
Southern Islands
Embedded
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1200 MHz
1500 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
128bit
Bandwidth
153.6GB/s
96.00GB/s
Render Config
Compute Units
16
12
Shading Units
1024
768
TMUs
64
48
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
256 KB
Theoretical Performance
Pixel Rate
27.52 GPixel/s
16.00 GPixel/s
Texture Rate
55.04 GTexel/s
48.00 GTexel/s
FP32 (float)
1.761 TFLOPS
1.536 TFLOPS
FP64 (double)
110.1 GFLOPS
96.00 GFLOPS
Graphics Processor
GPU Name
Pitcairn
Saturn
GPU Variant
Pitcairn PRO(215-0828062)
Saturn PRO
Architecture
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
2.08 billion
Die Size
212 mm²
160 mm²
Board Design
TDP
130W
75W
Suggested PSU
300 W
-
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 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.2
1.2
Shader Model
5.1
6.3
📊 Benchmark
3DMark Time Spy
1,334
-
3DMark Time Spy Extreme
325
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