GPU Comparison
RADEON
AMD Radeon 550X
CORE STATE
Lexa
VRAM
2 GB
CLOCK SPEED
1218 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2019
VS
RADEON
Radeon HD 7970
CORE STATE
Tahiti
VRAM
3 GB
CLOCK SPEED
—
TDP
250 W
BUS WIDTH
384 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2012
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
550X
HD 7970
Core Specs
Shading Units
512
2,048
+300.0%
Shaders
512
2,048
+300.0%
TMUs
32
128
+300.0%
ROPs
16
32
+100.0%
Compute Units
8
32
+300.0%
Clocks
Base Clock
1082 MHz
—
Boost Clock
1218 MHz
—
GPU Clock
—
925 MHz
Memory Clock
1750 MHz
7 Gbps effective
1375 MHz
5.5 Gbps effective
Memory
Memory Size
2 GB
3 GB
VRAM (MB)
2,048
3,072
+50.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
384 bit
Bandwidth
112.0 GB/s
264.0 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
768 KB
Performance
Pixel Rate
19.49 GPixel/s
29.60 GPixel/s
Texture Rate
38.98 GTexel/s
118.4 GTexel/s
FP32 (TFLOPS)
1,247.2 GFLOPS
3.789 TFLOPS
FP64 (TFLOPS)
77.95 GFLOPS (1:16)
947.2 GFLOPS (1:4)
FP16 (TFLOPS)
1,247.2 GFLOPS (1:1)
—
Power
TDP
50 W
250 W
TDP (W)
50
250
+400.0%
Suggested PSU
250 W
600 W
Power Connectors
None
1x 6-pin + 1x 8-pin
Architecture
Architecture
GCN 4.0
GCN 1.0
GPU Name
Lexa
Tahiti
Generation
Polaris
(RX 500X)
Southern Islands
(HD 7900)
Process Size
14 nm
28 nm
Transistors
2,200 million
4,313 million
Die Size
103 mm²
352 mm²
Foundry
GlobalFoundries
TSMC
Density
21.4M / mm²
12.3M / mm²
API Support
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
Vulkan
1.3
1.2.170
OpenCL
2.1
2.1 (1.2)
Shader Model
6.7
6.5 (5.1)
Physical
Slot Width
Dual-slot
Dual-slot
Length
145 mm
5.7 inches
275 mm
10.8 inches
Height
—
111 mm
4.4 inches
Outputs
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Launch Price
—
549 USD
Production
End-of-life
End-of-life
Predecessor
Polaris
Northern Islands
Successor
Vega
Sea Islands