GPU Comparison
RADEON
AMD 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
VS
RADEON
Radeon RX 550
CORE STATE
Lexa
VRAM
2 GB
CLOCK SPEED
1183 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_opencl
3dmark_3dmark_steel_nomad_dx12
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
RX 550
Core Specs
Shading Units
2,048
512
-75.0%
Shaders
2,048
512
-75.0%
TMUs
128
32
-75.0%
ROPs
32
16
-50.0%
Compute Units
32
8
-75.0%
Clocks
Base Clock
—
1100 MHz
Boost Clock
—
1183 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
1750 MHz
7 Gbps effective
Memory
Memory Size
3 GB
2 GB
VRAM (MB)
3,072
2,048
-33.3%
Memory Type
GDDR5
GDDR5
Memory Bus
384 bit
128 bit
Bandwidth
264.0 GB/s
112.0 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
512 KB
Performance
Pixel Rate
29.60 GPixel/s
18.93 GPixel/s
Texture Rate
118.4 GTexel/s
37.86 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
1,211.4 GFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
75.71 GFLOPS (1:16)
FP16 (TFLOPS)
—
1,211.4 GFLOPS (1:1)
Power
TDP
250 W
50 W
TDP (W)
250
50
-80.0%
Suggested PSU
600 W
250 W
Power Connectors
1x 6-pin + 1x 8-pin
None
Architecture
Architecture
GCN 1.0
GCN 4.0
GPU Name
Tahiti
Lexa
Generation
Southern Islands
(HD 7900)
Polaris
(RX 500)
Process Size
28 nm
14 nm
Transistors
4,313 million
2,200 million
Die Size
352 mm²
103 mm²
Foundry
TSMC
GlobalFoundries
Density
12.3M / mm²
21.4M / mm²
API Support
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.3
OpenCL
2.1 (1.2)
2.1
Shader Model
6.5 (5.1)
6.7
Physical
Slot Width
Dual-slot
Dual-slot
Length
275 mm
10.8 inches
145 mm
5.7 inches
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Other
Launch Price
549 USD
79 USD
Production
End-of-life
End-of-life
Predecessor
Northern Islands
Arctic Islands
Successor
Sea Islands
Vega