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 480
CORE STATE
Ellesmere
VRAM
8 GB
CLOCK SPEED
1266 MHz
TDP
150 W
BUS WIDTH
256 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2016
PERFORMANCE BENCHMARKS
geekbench_opencl
3dmark_3dmark_steel_nomad_dx12
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
RX 480
Core Specs
Shading Units
2,048
2,304
+12.5%
Shaders
2,048
2,304
+12.5%
TMUs
128
144
+12.5%
ROPs
32
32
0.0%
Compute Units
32
36
+12.5%
Clocks
Base Clock
—
1120 MHz
Boost Clock
—
1266 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
2000 MHz
8 Gbps effective
Memory
Memory Size
3 GB
8 GB
VRAM (MB)
3,072
8,192
+166.7%
Memory Type
GDDR5
GDDR5
Memory Bus
384 bit
256 bit
Bandwidth
264.0 GB/s
256.0 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
2 MB
Performance
Pixel Rate
29.60 GPixel/s
40.51 GPixel/s
Texture Rate
118.4 GTexel/s
182.3 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
5.834 TFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
364.6 GFLOPS (1:16)
FP16 (TFLOPS)
—
5.834 TFLOPS (1:1)
Power
TDP
250 W
150 W
TDP (W)
250
150
-40.0%
Suggested PSU
600 W
450 W
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Architecture
Architecture
GCN 1.0
GCN 4.0
GPU Name
Tahiti
Ellesmere
Generation
Southern Islands
(HD 7900)
Arctic Islands
(RX 400)
Process Size
28 nm
14 nm
Transistors
4,313 million
5,700 million
Die Size
352 mm²
232 mm²
Foundry
TSMC
GlobalFoundries
Density
12.3M / mm²
24.6M / 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
240 mm
9.4 inches
Height
111 mm
4.4 inches
95 mm
3.7 inches
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x HDMI 2.0b3x DisplayPort 1.4a
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
549 USD
229 USD
Production
End-of-life
End-of-life
Predecessor
Northern Islands
Pirate Islands
Successor
Sea Islands
Polaris