AMD Radeon HD 6990 vs AMD Radeon Instinct MI6
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Dec 2016
Generation
Northern Islands
Radeon Instinct
Type
Desktop
Professional
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
1750 MHz
Base Clock
—
1120 MHz
Boost Clock
—
1233 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
224.0GB/s
Render Config
Compute Units
24
36
Shading Units
1536
2304
TMUs
96
144
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
26.56 GPixel/s
39.46 GPixel/s
Texture Rate
79.68 GTexel/s
177.6 GTexel/s
FP32 (float)
2.550 TFLOPS
5.682 TFLOPS
FP64 (double)
637.4 GFLOPS
355.1 GFLOPS
FP16 (half)
—
5.682 TFLOPS
Graphics Processor
GPU Name
Antilles
Ellesmere
GPU Variant
Antilles XT(215-0807027)
Ellesmere XT
Architecture
TeraScale 3
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
40 nm
14 nm
Transistors
2.64 billion
5.7 billion
Die Size
389 mm²
232 mm²
Board Design
TDP
375W
150W
Suggested PSU
750 W
450 W
Outputs
1x DVI4x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 8-pin
1x 6-pin
Graphics Features
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
OpenCL
1.2
2.1
Vulkan
N/A
1.2
Shader Model
5.0
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.