AMD Radeon HD 6990 vs AMD Radeon RX 550 512SP
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 2GB VRAM Radeon RX 550 512SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990 's Advantages
Larger VRAM bandwidth (160.0GB/s vs 96.00GB/s)
1024 additional rendering cores
AMD Radeon RX 550 512SP 's Advantages
Released 6 years and 7 months late
Boost Clock1071MHz
Lower TDP (50W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
+132%
2.55 TFLOPS
Radeon RX 550 512SP
1.097 TFLOPS
Graphics Card
Mar 2011
Release Date
Oct 2017
Northern Islands
Generation
Polaris
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
1019 MHz
-
Boost Clock
1071 MHz
1250 MHz
Memory Clock
1500 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
96.00GB/s
Render Config
24
Compute Units
8
-
-
-
1536
Shading Units
512
96
TMUs
32
32
ROPs
16
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
26.56 GPixel/s
Pixel Rate
17.14 GPixel/s
79.68 GTexel/s
Texture Rate
34.27 GTexel/s
-
FP16 (half)
1097 GFLOPS
2.550 TFLOPS
FP32 (float)
1097 GFLOPS
637.4 GFLOPS
FP64 (double)
68.54 GFLOPS
Board Design
375W
TDP
50W
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
Baffin
Antilles XT
(215-0807027)
GPU Variant
Baffin LE
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
