AMD Radeon E8870 vs AMD Radeon HD 6990
GPU Specs Compare
Graphics Card
Release Date
Sep 2015
Mar 2011
Generation
Embedded
Northern Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 2.0 x16
Clock Speeds
Memory Clock
1500 MHz
1250 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
256bit
Bandwidth
96.00GB/s
160.0GB/s
Render Config
Compute Units
12
24
Shading Units
768
1536
TMUs
48
96
ROPs
16
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
256 KB
512 KB
Theoretical Performance
Pixel Rate
16.00 GPixel/s
26.56 GPixel/s
Texture Rate
48.00 GTexel/s
79.68 GTexel/s
FP32 (float)
1.536 TFLOPS
2.550 TFLOPS
FP64 (double)
96.00 GFLOPS
637.4 GFLOPS
Graphics Processor
GPU Name
Saturn
Antilles
GPU Variant
Saturn PRO
Antilles XT(215-0807027)
Architecture
GCN 2.0
TeraScale 3
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
2.08 billion
2.64 billion
Die Size
160 mm²
389 mm²
Board Design
TDP
75W
375W
Outputs
No outputs
1x DVI4x mini-DisplayPort 1.2
Power Connectors
None
2x 8-pin
Suggested PSU
-
750 W
Graphics Features
DirectX
12 (12_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.0
1.2
Vulkan
1.2
N/A
Shader Model
6.3
5.0