AMD Radeon HD 7950 vs AMD Radeon E8870
GPU Specs Compare
Graphics Card
Release Date
Jan 2012
Sep 2015
Generation
Southern Islands
Embedded
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1250 MHz
1500 MHz
Memory
Memory Size
3GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
128bit
Bandwidth
240.0GB/s
96.00GB/s
Render Config
Compute Units
28
12
Shading Units
1792
768
TMUs
112
48
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
256 KB
Theoretical Performance
Pixel Rate
25.60 GPixel/s
16.00 GPixel/s
Texture Rate
89.60 GTexel/s
48.00 GTexel/s
FP32 (float)
2.867 TFLOPS
1.536 TFLOPS
FP64 (double)
716.8 GFLOPS
96.00 GFLOPS
Graphics Processor
GPU Name
Tahiti
Saturn
GPU Variant
Tahiti PRO(215-0821056)
Saturn PRO
Architecture
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
2.08 billion
Die Size
352 mm²
160 mm²
Board Design
TDP
200W
75W
Suggested PSU
550 W
-
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 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
1,969
-
3DMark Time Spy Extreme
1,019
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