Radeon HD 6990 vs Radeon RX 560
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 4GB VRAM Radeon RX 560 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 6990 's Advantages
Larger VRAM bandwidth (160.0GB/s vs 112.0GB/s)
512 additional rendering cores
Radeon RX 560 's Advantages
Released 6 years and 1 months late
Boost Clock1275MHz
More VRAM (4GB vs 2GB)
Lower TDP (75W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
2550
Radeon RX 560
+2%
2611
Graphics Card
Mar 2011
Release Date
Apr 2017
Northern Islands
Generation
Polaris
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
1175 MHz
-
Boost Clock
1275 MHz
1250 MHz
Memory Clock
1750 MHz
Memory
2GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
112.0GB/s
Render Config
24
Compute Units
16
1536
Shading Units
1024
96
TMUs
64
32
ROPs
16
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
1024 KB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
20.40 GPixel/s
79.68 GTexel/s
Texture Rate
81.60 GTexel/s
-
FP16 (half)
2.611 TFLOPS
2.550 TFLOPS
FP32 (float)
2.611 TFLOPS
637.4 GFLOPS
FP64 (double)
163.2 GFLOPS
Board Design
375W
TDP
75W
750 W
Suggested PSU
250 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
1x HDMI 2.0b
1x DisplayPort 1.4a
2x 8-pin
Power Connectors
None
Graphics Processor
Antilles
GPU Name
Polaris 21
Antilles XT
(215-0807027)
GPU Variant
Polaris 21 XT
(215-0908004)
TeraScale 3
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
40 nm
Process Size
14 nm
2.64 billion
Transistors
3 billion
389 mm²
Die Size
123 mm²
Graphics Features
11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.2
5.0
Shader Model
6.4
