AMD Radeon HD 6990 vs AMD Radeon Pro 575
GPU Specs Compare
Graphics Card
Release Date
Mar 2011
Jun 2017
Generation
Northern Islands
Radeon Pro Mac
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
1695 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
217.0GB/s
Render Config
Compute Units
24
32
Shading Units
1536
2048
TMUs
96
128
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
35.07 GPixel/s
Texture Rate
79.68 GTexel/s
140.3 GTexel/s
FP32 (float)
2.550 TFLOPS
4.489 TFLOPS
FP64 (double)
637.4 GFLOPS
280.6 GFLOPS
FP16 (half)
-
4.489 TFLOPS
Graphics Processor
GPU Name
Antilles
Polaris 20
GPU Variant
Antilles XT(215-0807027)
Polaris 20 XL(215-0910052)
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
-
Outputs
1x DVI4x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 8-pin
None
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
📊 Benchmark
3DMark Time Spy
-
3,393
3DMark Time Spy Extreme
-
1,351