AMD Radeon HD 6990 vs AMD Radeon RX 590
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Nov 2018
Generation
Northern Islands
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
2000 MHz
Base Clock
—
1469 MHz
Boost Clock
—
1545 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
256.0GB/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
49.44 GPixel/s
Texture Rate
79.68 GTexel/s
222.5 GTexel/s
FP32 (float)
2.550 TFLOPS
7.119 TFLOPS
FP64 (double)
637.4 GFLOPS
445.0 GFLOPS
FP16 (half)
—
7.119 TFLOPS
Graphics Processor
GPU Name
Antilles
Polaris 30
GPU Variant
Antilles XT(215-0807027)
Polaris 30 XT(215-0922006)
Architecture
TeraScale 3
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
40 nm
12 nm
Transistors
2.64 billion
5.7 billion
Die Size
389 mm²
232 mm²
Board Design
TDP
375W
175W
Suggested PSU
750 W
450 W
Outputs
1x DVI4x mini-DisplayPort 1.2
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
2x 8-pin
1x 8-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.