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 HD 8570M
CORE STATE
Sun
VRAM
1024 MB
CLOCK SPEED
825 MHz
TDP
—
BUS WIDTH
64 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
HD 8570M
Core Specs
Shading Units
2,048
320
-84.4%
Shaders
2,048
320
-84.4%
TMUs
128
20
-84.4%
ROPs
32
8
-75.0%
Compute Units
32
5
-84.4%
Clocks
Base Clock
—
750 MHz
Boost Clock
—
825 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
1000 MHz
2 Gbps effective
Memory
Memory Size
3 GB
1024 MB
VRAM (MB)
3,072
1,024
-66.7%
Memory Type
GDDR5
DDR3
Memory Bus
384 bit
64 bit
Bandwidth
264.0 GB/s
16.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
768 KB
128 KB
Performance
Pixel Rate
29.60 GPixel/s
6.600 GPixel/s
Texture Rate
118.4 GTexel/s
16.50 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
528.0 GFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
33.00 GFLOPS (1:16)
Power
TDP
250 W
—
TDP (W)
250
—
Suggested PSU
600 W
—
Power Connectors
1x 6-pin + 1x 8-pin
—
Architecture
Architecture
GCN 1.0
GCN 1.0
GPU Name
Tahiti
Sun
Generation
Southern Islands
(HD 7900)
Solar System
(HD 8500M)
Process Size
28 nm
28 nm
Transistors
4,313 million
690 million
Die Size
352 mm²
56 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
12.3M / mm²
API Support
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.170
OpenCL
2.1 (1.2)
2.1 (1.2)
Shader Model
6.5 (5.1)
6.5 (5.1)
Physical
Slot Width
Dual-slot
—
Length
275 mm
10.8 inches
—
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
—
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Other
Launch Price
549 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
London
Successor
Sea Islands
Gem System